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8-Hour Ozone State/Area/County Report With Classifications
for Carbon Monoxide (CO), Particulate Matter-10 microns (PM-10),
1997 and 2006 Particulate Matter-2.5 microns (PM-2.5), and Previous 1-hour Ozone*

As of November 13, 2009

8-Hr Ozone classified area designations for the 1997 standard were effective on June 15, 2004. Thirteen (13) 8-Hr EAC areas were designated attainment on April 15, 2008.
1997 PM-2.5 area designations were effective on April 5, 2005. 2006 PM-2.5 area designations are effective on December 14, 2009.

On June 8, 2007, the United States Court of Appeals vacated the Subpart 1 portion of the Phase 1 Rule (Court Order). The Subpart 1 areas in the Greenbook are listed as "Former Subpart 1" until reclassification of the areas is finalized. Proposed reclassifications were published on January 16, 2009 (74 FR 2936).

View Notes
    Classification
8-Hour Ozone State/Area/County
(P=Part County)		 1-Hr Ozone
Nonatt. * 		1-Hr Ozone
Maint. * 		CO
Nonatt. 		CO
Maint. 		PM-10
Nonatt. 		PM-10
Maint. 		2006
PM-2.5
Nonatt. 		1997
PM-2.5
Nonatt.

ALABAMA (Region IV)
  Birmingham, AL Maintenance 8-Hour Ozone Category/Classification: Former Subpart 1
Jefferson Co   Marginal         Nonatt. Nonatt.
Shelby Co   Marginal         Nonatt. Nonatt.

ARIZONA (Region IX)
  Phoenix-Mesa, AZ Nonattainment 8-Hour Ozone Category/Classification: Former Subpart 1
Maricopa Co (P)   Serious   Serious Serious      
Pinal Co (P)         Serious      

ARKANSAS (Region VI)
  Memphis, TN-AR Nonattainment 8-Hour Ozone Category/Classification: Moderate
Crittenden Co                

CALIFORNIA (Region IX)
  Amador and Calaveras Cos (Central Mtn), CA Nonattainment 8-Hour Ozone Category/Classification: Former Subpart 1
Amador Co                
Calaveras Co                
  Chico, CA Nonattainment 8-Hour Ozone Category/Classification: Former Subpart 1
Butte Co Section 185A     Moderate <= 12.7ppm     Nonatt.  
  Imperial Co, CA Nonattainment 8-Hour Ozone Category/Classification: Moderate
Imperial Co Section 185A       Serious   Nonatt.  
  Kern Co (Eastern Kern), CA Nonattainment 8-Hour Ozone Category/Classification: Former Subpart 1
Kern Co (P)   Serious   Not Classified Serious Serious Nonatt. Nonatt.
  Los Angeles South Coast Air Basin, CA Nonattainment 8-Hour Ozone Category/Classification: Severe 17
Los Angeles Co (P) Extreme     Serious Serious   Nonatt. Nonatt.
Orange Co Extreme     Serious Serious   Nonatt. Nonatt.
Riverside Co (P) Extreme     Serious Serious   Nonatt. Nonatt.
San Bernardino Co (P) Extreme     Serious Serious   Nonatt. Nonatt.
  Los Angeles-San Bernardino Cos(W Mojave),CA Nonattainment 8-Hour Ozone Category/Classification: Moderate
Los Angeles Co (P) Severe-17     Serious Serious   Nonatt. Nonatt.
San Bernardino Co (P) Severe-17     Serious Serious   Nonatt. Nonatt.
  Mariposa and Tuolumne Cos (Southern Mtn),CA Nonattainment 8-Hour Ozone Category/Classification: Former Subpart 1
Mariposa Co                
Tuolumne Co                
  Nevada Co. (Western Part), CA Nonattainment 8-Hour Ozone Category/Classification: Former Subpart 1
Nevada Co (P)                
  Riverside Co, (Coachella Valley), CA Nonattainment 8-Hour Ozone Category/Classification: Serious
Riverside Co (P) Severe-17     Serious Serious   Nonatt. Nonatt.
  Sacramento Metro, CA Nonattainment 8-Hour Ozone Category/Classification: Serious
El Dorado Co (P) Severe-15     Moderate <= 12.7ppm     Nonatt.  
Placer Co (P) Severe-15     Moderate <= 12.7ppm     Nonatt.  
Sacramento Co Severe-15     Moderate <= 12.7ppm Moderate   Nonatt.  
Solano Co (P) Severe-15     Moderate <= 12.7ppm     Nonatt.  
Sutter Co (P) Severe-15           Nonatt.  
Yolo Co Severe-15     Moderate <= 12.7ppm     Nonatt.  
  San Diego, CA Nonattainment 8-Hour Ozone Category/Classification: Former Subpart 1
San Diego Co (P)   Serious   Moderate <= 12.7ppm        
  San Francisco Bay Area, CA Nonattainment 8-Hour Ozone Category/Classification: Marginal
Alameda Co Other     Moderate <= 12.7ppm     Nonatt.  
Contra Costa Co Other     Moderate <= 12.7ppm     Nonatt.  
Marin Co Other     Moderate <= 12.7ppm     Nonatt.  
Napa Co Other     Moderate <= 12.7ppm     Nonatt.  
San Francisco Co Other     Moderate <= 12.7ppm     Nonatt.  
San Mateo Co Other     Moderate <= 12.7ppm     Nonatt.  
Santa Clara Co Other     Moderate <= 12.7ppm     Nonatt.  
Solano Co (P) Other     Moderate <= 12.7ppm     Nonatt.  
Sonoma Co (P) Other     Moderate <= 12.7ppm     Nonatt.  
  San Joaquin Valley, CA Nonattainment 8-Hour Ozone Category/Classification: Serious
Fresno Co Extreme     Moderate > 12.7ppm   Serious Nonatt. Nonatt.
Kern Co (P) Extreme     Not Classified Serious Serious Nonatt. Nonatt.
Kings Co Extreme         Serious Nonatt. Nonatt.
Madera Co Extreme         Serious Nonatt. Nonatt.
Merced Co Extreme           Nonatt. Nonatt.
San Joaquin Co Extreme     Moderate <= 12.7ppm   Serious Nonatt. Nonatt.
Stanislaus Co Extreme     Moderate <= 12.7ppm   Serious Nonatt. Nonatt.
Tulare Co Extreme         Serious Nonatt. Nonatt.
  Sutter Co (Sutter Buttes), CA Nonattainment 8-Hour Ozone Category/Classification: Former Subpart 1
Sutter Co (P) Section 185A           Nonatt.  
  Ventura Co, CA Nonattainment 8-Hour Ozone Category/Classification: Serious
Ventura Co (P) Severe-15              

COLORADO (Region VIII)
  Denver-Boulder-Greeley-Ft Collins-Love., CO Nonattainment 8-Hour Ozone Category/Classification: Former Subpart 1
Adams Co   Section 185A   Serious   Moderate    
Arapahoe Co   Section 185A   Serious   Moderate    
Boulder Co   Section 185A   Serious   Moderate    
Broomfield Co   Section 185A   Serious   Moderate    
Denver Co   Section 185A   Serious   Moderate    
Douglas Co   Section 185A   Serious   Moderate    
Jefferson Co   Section 185A   Serious   Moderate    
Larimer Co (P)       Moderate <= 12.7ppm        
Weld Co (P)       Moderate <= 12.7ppm        

CONNECTICUT (Region I)
  Greater Connecticut, CT Nonattainment 8-Hour Ozone Category/Classification: Moderate
Hartford Co Serious     Moderate <= 12.7ppm        
Litchfield Co Severe-17     Moderate > 12.7ppm        
New London Co Serious              
Tolland Co Serious     Moderate <= 12.7ppm        
Windham Co Serious              
  New York-N. New Jersey-Long Island,NY-NJ-CT Nonattainment 8-Hour Ozone Category/Classification: Moderate
Fairfield Co Severe-17     Moderate > 12.7ppm     Nonatt. Nonatt.
Middlesex Co Serious     Moderate <= 12.7ppm        
New Haven Co Serious     Not Classified   Moderate Nonatt. Nonatt.

DELAWARE (Region III)
  Philadelphia-Wilmin-Atlantic Ci,PA-NJ-MD-DE Nonattainment 8-Hour Ozone Category/Classification: Moderate
Kent Co Severe-15              
New Castle Co Severe-15           Nonatt. Nonatt.
Sussex Co Marginal              

DISTRICT OF COLUMBIA (Region III)
  Washington, DC-MD-VA Nonattainment 8-Hour Ozone Category/Classification: Moderate
Entire District Severe-15     Moderate <= 12.7ppm       Nonatt.

GEORGIA (Region IV)
  Atlanta, GA Nonattainment 8-Hour Ozone Category/Classification: Moderate
Barrow Co               Nonatt.
Bartow Co               Nonatt.
Carroll Co               Nonatt.
Cherokee Co   Severe-15           Nonatt.
Clayton Co   Severe-15           Nonatt.
Cobb Co   Severe-15           Nonatt.
Coweta Co   Severe-15           Nonatt.
De Kalb Co   Severe-15           Nonatt.
Douglas Co   Severe-15           Nonatt.
Fayette Co   Severe-15           Nonatt.
Forsyth Co   Severe-15           Nonatt.
Fulton Co   Severe-15           Nonatt.
Gwinnett Co   Severe-15           Nonatt.
Hall Co               Nonatt.
Henry Co   Severe-15           Nonatt.
Newton Co               Nonatt.
Paulding Co   Severe-15           Nonatt.
Rockdale Co   Severe-15           Nonatt.
Spalding Co               Nonatt.
Walton Co               Nonatt.
  Macon, GA Maintenance 8-Hour Ozone Category/Classification: Former Subpart 1
Bibb Co               Nonatt.
Monroe Co (P)               Nonatt.
  Murray Co (Chattahoochee Nat Forest), GA Maintenance 8-Hour Ozone Category/Classification: Former Subpart 1
Murray Co (P)                

ILLINOIS (Region V)
  Chicago-Gary-Lake County, IL-IN Nonattainment 8-Hour Ozone Category/Classification: Moderate
Cook Co Severe-17         Moderate   Nonatt.
Du Page Co Severe-17             Nonatt.
Grundy Co (P) Severe-17             Nonatt.
Kane Co Severe-17             Nonatt.
Kendall Co (P) Severe-17             Nonatt.
Lake Co Severe-17             Nonatt.
Mc Henry Co Severe-17             Nonatt.
Will Co Severe-17             Nonatt.
  St Louis, MO-IL Nonattainment 8-Hour Ozone Category/Classification: Moderate
Jersey Co   Marginal            
Madison Co   Serious       Moderate   Nonatt.
Monroe Co   Serious           Nonatt.
St Clair Co   Serious           Nonatt.

INDIANA (Region V)
  Chicago-Gary-Lake County, IL-IN Nonattainment 8-Hour Ozone Category/Classification: Moderate
Lake Co Severe-17     Not Classified   Moderate   Nonatt.
Porter Co Severe-17             Nonatt.
  Cincinnati-Hamilton, OH-KY-IN Nonattainment 8-Hour Ozone Category/Classification: Former Subpart 1
Dearborn Co (P)               Nonatt.
  Evansville, IN Maintenance 8-Hour Ozone Category/Classification: Former Subpart 1
Vanderburgh Co   Marginal           Nonatt.
Warrick Co               Nonatt.
  Fort Wayne, IN Maintenance 8-Hour Ozone Category/Classification: Former Subpart 1
Allen Co                
  Greene Co, IN Maintenance 8-Hour Ozone Category/Classification: Former Subpart 1
Greene Co                
  Indianapolis, IN Maintenance 8-Hour Ozone Category/Classification: Former Subpart 1
Boone Co                
Hamilton Co               Nonatt.
Hancock Co                
Hendricks Co               Nonatt.
Johnson Co               Nonatt.
Madison Co                
Marion Co   Marginal   Not Classified       Nonatt.
Morgan Co               Nonatt.
Shelby Co                
  Jackson Co, IN Maintenance 8-Hour Ozone Category/Classification: Former Subpart 1
Jackson Co                
  La Porte, IN Maintenance 8-Hour Ozone Category/Classification: Marginal
La Porte Co                
  Louisville, KY-IN Maintenance 8-Hour Ozone Category/Classification: Former Subpart 1
Clark Co   Moderate           Nonatt.
Floyd Co   Moderate           Nonatt.
  Muncie, IN Maintenance 8-Hour Ozone Category/Classification: Former Subpart 1
Delaware Co                
  South Bend-Elkhart, IN Maintenance 8-Hour Ozone Category/Classification: Former Subpart 1
Elkhart Co   Marginal            
St Joseph Co   Marginal            
  Terre Haute, IN Maintenance 8-Hour Ozone Category/Classification: Former Subpart 1
Vigo Co                

KENTUCKY (Region IV)
  Cincinnati-Hamilton, OH-KY-IN Nonattainment 8-Hour Ozone Category/Classification: Former Subpart 1
Boone Co   Moderate           Nonatt.
Campbell Co   Moderate           Nonatt.
Kenton Co   Moderate           Nonatt.
  Clarksville-Hopkinsville, TN-KY Maintenance 8-Hour Ozone Category/Classification: Former Subpart 1
Christian Co                
  Huntington-Ashland, WV-KY Maintenance 8-Hour Ozone Category/Classification: Former Subpart 1
Boyd Co   Moderate           Nonatt.
  Louisville, KY-IN Maintenance 8-Hour Ozone Category/Classification: Former Subpart 1
Bullitt Co   Moderate           Nonatt.
Jefferson Co   Moderate           Nonatt.
Oldham Co   Moderate            

LOUISIANA (Region VI)
  Baton Rouge, LA Nonattainment 8-Hour Ozone Category/Classification: Moderate
Ascension Par Severe-15              
East Baton Rouge Par Severe-15              
Iberville Par Severe-15              
Livingston Par Severe-15              
West Baton Rouge Par Severe-15              

MAINE (Region I)
  Hancock, Knox, Lincoln & Waldo Cos, ME Maintenance 8-Hour Ozone Category/Classification: Former Subpart 1
Hancock Co (P)   Marginal            
Knox Co (P) Moderate              
Lincoln Co (P) Moderate              
Waldo Co (P)   Marginal            
  Portland, ME Maintenance 8-Hour Ozone Category/Classification: Marginal
Androscoggin Co (P) Moderate              
Cumberland Co (P) Moderate              
Sagadahoc Co Moderate              
York Co (P) Moderate              

MARYLAND (Region III)
  Baltimore, MD Nonattainment 8-Hour Ozone Category/Classification: Moderate
Anne Arundel Co Severe-15             Nonatt.
Baltimore (City) Severe-15     Moderate <= 12.7ppm       Nonatt.
Baltimore Co Severe-15             Nonatt.
Carroll Co Severe-15             Nonatt.
Harford Co Severe-15             Nonatt.
Howard Co Severe-15             Nonatt.
  Kent and Queen Anne's Cos, MD Maintenance 8-Hour Ozone Category/Classification: Marginal
Kent Co   Marginal            
Queen Annes Co   Marginal            
  Philadelphia-Wilmin-Atlantic Ci,PA-NJ-MD-DE Nonattainment 8-Hour Ozone Category/Classification: Moderate
Cecil Co Severe-15              
  Washington, DC-MD-VA Nonattainment 8-Hour Ozone Category/Classification: Moderate
Calvert Co Severe-15              
Charles Co Severe-15             Nonatt.
Frederick Co Severe-15             Nonatt.
Montgomery Co Severe-15     Moderate <= 12.7ppm       Nonatt.
Prince George's Co Severe-15     Moderate <= 12.7ppm       Nonatt.

MASSACHUSETTS (Region I)
  Boston-Lawrence-Worcester (E. MA), MA Nonattainment 8-Hour Ozone Category/Classification: Moderate
Barnstable Co Serious              
Bristol Co Serious              
Dukes Co Serious              
Essex Co Serious              
Middlesex Co Serious     Moderate <= 12.7ppm        
Nantucket Co Serious              
Norfolk Co Serious     Moderate <= 12.7ppm        
Plymouth Co Serious              
Suffolk Co Serious     Moderate <= 12.7ppm        
Worcester Co Serious     Not Classified        
  Springfield (Western MA), MA Nonattainment 8-Hour Ozone Category/Classification: Moderate
Berkshire Co Serious              
Franklin Co Serious              
Hampden Co Serious     Not Classified        
Hampshire Co Serious              

MICHIGAN (Region V)
  Allegan Co, MI Nonattainment 8-Hour Ozone Category/Classification: Former Subpart 1
Allegan Co   Incomplete Data            
  Benton Harbor, MI Maintenance 8-Hour Ozone Category/Classification: Former Subpart 1
Berrien Co                
  Benzie Co, MI Maintenance 8-Hour Ozone Category/Classification: Former Subpart 1
Benzie Co                
  Cass Co, MI Maintenance 8-Hour Ozone Category/Classification: Marginal
Cass Co                
  Detroit-Ann Arbor, MI Maintenance 8-Hour Ozone Category/Classification: Marginal
Lenawee Co                
Livingston Co   Moderate         Nonatt. Nonatt.
Macomb Co   Moderate   Not Classified     Nonatt. Nonatt.
Monroe Co   Moderate         Nonatt. Nonatt.
Oakland Co   Moderate   Not Classified     Nonatt. Nonatt.
St Clair Co   Moderate         Nonatt. Nonatt.
Washtenaw Co   Moderate         Nonatt. Nonatt.
Wayne Co   Moderate   Not Classified   Moderate Nonatt. Nonatt.
  Flint, MI Maintenance 8-Hour Ozone Category/Classification: Former Subpart 1
Genesee Co   Section 185A            
Lapeer Co                
  Grand Rapids, MI Maintenance 8-Hour Ozone Category/Classification: Former Subpart 1
Kent Co   Moderate            
Ottawa Co   Moderate            
  Huron Co, MI Maintenance 8-Hour Ozone Category/Classification: Former Subpart 1
Huron Co                
  Kalamazoo-Battle Creek, MI Maintenance 8-Hour Ozone Category/Classification: Former Subpart 1
Calhoun Co                
Kalamazoo Co                
Van Buren Co                
  Lansing-East Lansing, MI Maintenance 8-Hour Ozone Category/Classification: Former Subpart 1
Clinton Co                
Eaton Co                
Ingham Co                
  Mason Co, MI Maintenance 8-Hour Ozone Category/Classification: Former Subpart 1
Mason Co                
  Muskegon, MI Maintenance 8-Hour Ozone Category/Classification: Marginal
Muskegon Co   Moderate            

MISSOURI (Region VII)
  St Louis, MO-IL Nonattainment 8-Hour Ozone Category/Classification: Moderate
Franklin Co   Serious           Nonatt.
Jefferson Co   Serious           Nonatt.
St Charles Co   Serious           Nonatt.
St Louis   Serious   Not Classified       Nonatt.
St Louis Co   Serious   Not Classified       Nonatt.

NEVADA (Region IX)
  Las Vegas, NV Nonattainment 8-Hour Ozone Category/Classification: Former Subpart 1
Clark Co (P)     Serious   Serious      

NEW HAMPSHIRE (Region I)
  Boston-Manchester-Portsmouth(SE),NH Nonattainment 8-Hour Ozone Category/Classification: Moderate
Hillsborough Co (P) Serious     Not Classified        
Merrimack Co (P) Marginal              
Rockingham Co (P) Serious              
Strafford Co (P) Serious              

NEW JERSEY (Region II)
  New York-N. New Jersey-Long Island,NY-NJ-CT Nonattainment 8-Hour Ozone Category/Classification: Moderate
Bergen Co Severe-17     Moderate > 12.7ppm     Nonatt. Nonatt.
Essex Co Severe-17     Moderate > 12.7ppm     Nonatt. Nonatt.
Hudson Co Severe-17     Moderate > 12.7ppm     Nonatt. Nonatt.
Hunterdon Co Severe-17              
Middlesex Co Severe-17     Not Classified     Nonatt. Nonatt.
Monmouth Co Severe-17     Not Classified     Nonatt. Nonatt.
Morris Co Severe-17     Not Classified     Nonatt. Nonatt.
Passaic Co Severe-17     Moderate > 12.7ppm     Nonatt. Nonatt.
Somerset Co Severe-17     Not Classified     Nonatt. Nonatt.
Sussex Co Severe-17              
Union Co Severe-17     Moderate > 12.7ppm     Nonatt. Nonatt.
Warren Co Marginal              
  Philadelphia-Wilmin-Atlantic Ci,PA-NJ-MD-DE Nonattainment 8-Hour Ozone Category/Classification: Moderate
Atlantic Co Moderate     Not Classified        
Burlington Co Severe-15     Not Classified     Nonatt. Nonatt.
Camden Co Severe-15     Moderate <= 12.7ppm     Nonatt. Nonatt.
Cape May Co Moderate              
Cumberland Co Severe-15              
Gloucester Co Severe-15           Nonatt. Nonatt.
Mercer Co Severe-15     Not Classified     Nonatt. Nonatt.
Ocean Co Severe-17     Not Classified        
Salem Co Severe-15     Not Classified        

NEW YORK (Region II)
  Albany-Schenectady-Troy, NY Nonattainment 8-Hour Ozone Category/Classification: Former Subpart 1
Albany Co Marginal              
Greene Co Marginal              
Montgomery Co Marginal              
Rensselaer Co Marginal              
Saratoga Co Marginal              
Schenectady Co Marginal              
Schoharie Co                
  Buffalo-Niagara Falls, NY Nonattainment 8-Hour Ozone Category/Classification: Former Subpart 1
Erie Co Marginal              
Niagara Co Marginal              
  Essex Co (Whiteface Mtn), NY Nonattainment 8-Hour Ozone Category/Classification: Former Subpart 1
Essex Co (P) Rural Transport (Marginal)              
  Jamestown, NY Nonattainment 8-Hour Ozone Category/Classification: Former Subpart 1
Chautauqua Co                
  Jefferson Co, NY Nonattainment 8-Hour Ozone Category/Classification: Moderate
Jefferson Co Marginal              
  New York-N. New Jersey-Long Island,NY-NJ-CT Nonattainment 8-Hour Ozone Category/Classification: Moderate
Bronx Co Severe-17     Moderate > 12.7ppm     Nonatt. Nonatt.
Kings Co Severe-17     Moderate > 12.7ppm     Nonatt. Nonatt.
Nassau Co Severe-17     Moderate > 12.7ppm     Nonatt. Nonatt.
New York Co Severe-17     Moderate > 12.7ppm Moderate   Nonatt. Nonatt.
Queens Co Severe-17     Moderate > 12.7ppm     Nonatt. Nonatt.
Richmond Co Severe-17     Moderate > 12.7ppm     Nonatt. Nonatt.
Rockland Co Severe-17           Nonatt. Nonatt.
Suffolk Co Severe-17           Nonatt. Nonatt.
Westchester Co Severe-17     Moderate > 12.7ppm     Nonatt. Nonatt.
  Poughkeepsie, NY Nonattainment 8-Hour Ozone Category/Classification: Moderate
Dutchess Co Moderate              
Orange Co Severe-17           Nonatt. Nonatt.
Putnam Co Moderate              
  Rochester, NY Nonattainment 8-Hour Ozone Category/Classification: Former Subpart 1
Genesee Co                
Livingston Co                
Monroe Co                
Ontario Co                
Orleans Co                
Wayne Co                

NORTH CAROLINA (Region IV)
  Charlotte-Gastonia-Rock Hill, NC-SC Nonattainment 8-Hour Ozone Category/Classification: Moderate
Cabarrus Co                
Gaston Co   Moderate            
Iredell Co (P)                
Lincoln Co                
Mecklenburg Co   Moderate   Not Classified        
Rowan Co                
Union Co                
  Haywood and Swain Cos (Great Smoky NP), NC Nonattainment 8-Hour Ozone Category/Classification: Former Subpart 1
Haywood Co (P)                
Swain Co (P)                
  Raleigh-Durham-Chapel Hill, NC Maintenance 8-Hour Ozone Category/Classification: Former Subpart 1
Chatham Co (P)                
Durham Co   Moderate   Moderate <= 12.7ppm        
Franklin Co                
Granville Co   Moderate            
Johnston Co                
Orange Co                
Person Co                
Wake Co   Moderate   Moderate <= 12.7ppm        
  Rocky Mount, NC Maintenance 8-Hour Ozone Category/Classification: Former Subpart 1
Edgecombe Co                
Nash Co                

OHIO (Region V)
  Canton-Massillon, OH Maintenance 8-Hour Ozone Category/Classification: Former Subpart 1
Stark Co   Marginal         Nonatt. Nonatt.
  Cincinnati-Hamilton, OH-KY-IN Nonattainment 8-Hour Ozone Category/Classification: Former Subpart 1
Butler Co   Moderate           Nonatt.
Clermont Co   Moderate           Nonatt.
Clinton Co   Section 185A            
Hamilton Co   Moderate           Nonatt.
Warren Co   Moderate           Nonatt.
  Cleveland-Akron-Lorain, OH Maintenance 8-Hour Ozone Category/Classification: Moderate
Ashtabula Co   Moderate           Nonatt.
Cuyahoga Co   Moderate   Moderate <= 12.7ppm   Moderate Nonatt. Nonatt.
Geauga Co   Moderate            
Lake Co   Moderate         Nonatt. Nonatt.
Lorain Co   Moderate         Nonatt. Nonatt.
Medina Co   Moderate         Nonatt. Nonatt.
Portage Co   Moderate         Nonatt. Nonatt.
Summit Co   Moderate         Nonatt. Nonatt.
  Columbus, OH Maintenance 8-Hour Ozone Category/Classification: Former Subpart 1
Delaware Co   Marginal           Nonatt.
Fairfield Co               Nonatt.
Franklin Co   Marginal           Nonatt.
Knox Co                
Licking Co   Marginal           Nonatt.
Madison Co                
  Dayton-Springfield, OH Maintenance 8-Hour Ozone Category/Classification: Former Subpart 1
Clark Co   Moderate           Nonatt.
Greene Co   Moderate           Nonatt.
Miami Co   Moderate            
Montgomery Co   Moderate           Nonatt.
  Lima, OH Maintenance 8-Hour Ozone Category/Classification: Former Subpart 1
Allen Co                
  Parkersburg-Marietta, WV-OH Maintenance 8-Hour Ozone Category/Classification: Former Subpart 1
Washington Co               Nonatt.
  Steubenville-Weirton, OH-WV Maintenance 8-Hour Ozone Category/Classification: Former Subpart 1
Jefferson Co   Section 185A       Moderate Nonatt. Nonatt.
  Toledo, OH Maintenance 8-Hour Ozone Category/Classification: Former Subpart 1
Lucas Co   Moderate            
Wood Co   Moderate            
  Wheeling, WV-OH Maintenance 8-Hour Ozone Category/Classification: Former Subpart 1
Belmont Co               Nonatt.
  Youngstown-Warren-Sharon, OH-PA Maintenance 8-Hour Ozone Category/Classification: Former Subpart 1
Columbiana Co   Incomplete Data            
Mahoning Co   Marginal            
Trumbull Co   Marginal            

PENNSYLVANIA (Region III)
  Allentown-Bethlehem-Easton, PA Maintenance 8-Hour Ozone Category/Classification: Former Subpart 1
Carbon Co Marginal              
Lehigh Co Marginal           Nonatt.  
Northampton Co Marginal           Nonatt.  
  Altoona, PA Maintenance 8-Hour Ozone Category/Classification: Former Subpart 1
Blair Co Marginal              
  Clearfield and Indiana Cos, PA Maintenance 8-Hour Ozone Category/Classification: Former Subpart 1
Clearfield Co                
Indiana Co             Nonatt. Nonatt.
  Erie, PA Maintenance 8-Hour Ozone Category/Classification: Former Subpart 1
Erie Co Marginal              
  Franklin Co, PA Maintenance 8-Hour Ozone Category/Classification: Former Subpart 1
Franklin Co Incomplete Data              
  Greene Co, PA Maintenance 8-Hour Ozone Category/Classification: Former Subpart 1
Greene Co Incomplete Data           Nonatt. Nonatt.
  Harrisburg-Lebanon-Carlisle, PA Maintenance 8-Hour Ozone Category/Classification: Former Subpart 1
Cumberland Co Marginal           Nonatt. Nonatt.
Dauphin Co Marginal           Nonatt. Nonatt.
Lebanon Co Marginal           Nonatt. Nonatt.
Perry Co Marginal              
  Johnstown, PA Maintenance 8-Hour Ozone Category/Classification: Former Subpart 1
Cambria Co Marginal           Nonatt. Nonatt.
  Lancaster, PA Maintenance 8-Hour Ozone Category/Classification: Marginal
Lancaster Co Marginal           Nonatt. Nonatt.
  Philadelphia-Wilmin-Atlantic Ci,PA-NJ-MD-DE Nonattainment 8-Hour Ozone Category/Classification: Moderate
Bucks Co Severe-15           Nonatt. Nonatt.
Chester Co Severe-15           Nonatt. Nonatt.
Delaware Co Severe-15           Nonatt. Nonatt.
Montgomery Co Severe-15           Nonatt. Nonatt.
Philadelphia Co Severe-15     Moderate <= 12.7ppm     Nonatt. Nonatt.
  Pittsburgh-Beaver Valley, PA Nonattainment 8-Hour Ozone Category/Classification: Former Subpart 1
Allegheny Co   Moderate   Not Classified   Moderate Nonatt. Nonatt.
Armstrong Co   Moderate         Nonatt. Nonatt.
Beaver Co   Moderate         Nonatt. Nonatt.
Butler Co   Moderate         Nonatt. Nonatt.
Fayette Co   Moderate            
Washington Co   Moderate         Nonatt. Nonatt.
Westmoreland Co   Moderate         Nonatt. Nonatt.
  Reading, PA Maintenance 8-Hour Ozone Category/Classification: Former Subpart 1
Berks Co   Moderate           Nonatt.
  Scranton-Wilkes-Barre, PA Maintenance 8-Hour Ozone Category/Classification: Former Subpart 1
Lackawanna Co Marginal              
Luzerne Co Marginal              
Monroe Co Marginal              
Wyoming Co Marginal              
  State College, PA Maintenance 8-Hour Ozone Category/Classification: Former Subpart 1
Centre Co                
  Tioga Co, PA Maintenance 8-Hour Ozone Category/Classification: Former Subpart 1
Tioga Co                
  York, PA Maintenance 8-Hour Ozone Category/Classification: Former Subpart 1
Adams Co Marginal              
York Co Marginal           Nonatt. Nonatt.
  Youngstown-Warren-Sharon, OH-PA Maintenance 8-Hour Ozone Category/Classification: Former Subpart 1
Mercer Co Marginal              

RHODE ISLAND (Region I)
  Providence (All RI), RI Nonattainment 8-Hour Ozone Category/Classification: Moderate
Bristol Co Serious              
Kent Co Serious              
Newport Co Serious              
Providence Co Serious              
Washington Co Serious              

SOUTH CAROLINA (Region IV)
  Charlotte-Gastonia-Rock Hill, NC-SC Nonattainment 8-Hour Ozone Category/Classification: Moderate
York Co (P)                

TENNESSEE (Region IV)
  Clarksville-Hopkinsville, TN-KY Maintenance 8-Hour Ozone Category/Classification: Former Subpart 1
Montgomery Co                
  Knoxville, TN Nonattainment 8-Hour Ozone Category/Classification: Former Subpart 1
Anderson Co             Nonatt. Nonatt.
Blount Co             Nonatt. Nonatt.
Cocke Co (P)                
Jefferson Co                
Knox Co   Marginal         Nonatt. Nonatt.
Loudon Co             Nonatt. Nonatt.
Sevier Co                
  Memphis, TN-AR Nonattainment 8-Hour Ozone Category/Classification: Moderate
Shelby Co   Marginal   Moderate <= 12.7ppm        

TEXAS (Region VI)
  Beaumont-Port Arthur, TX Nonattainment 8-Hour Ozone Category/Classification: Moderate
Hardin Co Serious              
Jefferson Co Serious              
Orange Co Serious              
  Dallas-Fort Worth, TX Nonattainment 8-Hour Ozone Category/Classification: Moderate
Collin Co Serious              
Dallas Co Serious              
Denton Co Serious              
Ellis Co                
Johnson Co                
Kaufman Co                
Parker Co                
Rockwall Co                
Tarrant Co Serious              
  Houston-Galveston-Brazoria, TX Nonattainment 8-Hour Ozone Category/Classification: Severe-15
Brazoria Co Severe-17              
Chambers Co Severe-17              
Fort Bend Co Severe-17              
Galveston Co Severe-17              
Harris Co Severe-17              
Liberty Co Severe-17              
Montgomery Co Severe-17              
Waller Co Severe-17              

VIRGINIA (Region III)
  Fredericksburg, VA Maintenance 8-Hour Ozone Category/Classification: Moderate
Fredericksburg                
Spotsylvania Co                
Stafford Co Severe-15              
  Madison and Page Cos (Shenandoah NP), VA Maintenance 8-Hour Ozone Category/Classification: Former Subpart 1
Madison Co (P)                
Page Co (P)                
  Norfolk-Virginia Beach-Newport News (HR),VA Maintenance 8-Hour Ozone Category/Classification: Marginal
Chesapeake   Marginal            
Gloucester Co                
Hampton   Marginal            
Isle Of Wight Co                
James City Co   Marginal            
Newport News   Marginal            
Norfolk   Marginal            
Poquoson   Marginal            
Portsmouth   Marginal            
Suffolk   Marginal            
Virginia Beach   Marginal            
Williamsburg   Marginal            
York Co   Marginal            
  Richmond-Petersburg, VA Maintenance 8-Hour Ozone Category/Classification: Marginal
Charles City Co   Moderate            
Chesterfield Co   Moderate            
Colonial Heights   Moderate            
Hanover Co   Moderate            
Henrico Co   Moderate            
Hopewell   Moderate            
Petersburg                
Prince George Co                
Richmond   Moderate            
  Washington, DC-MD-VA Nonattainment 8-Hour Ozone Category/Classification: Moderate
Alexandria Severe-15     Moderate <= 12.7ppm       Nonatt.
Arlington Co Severe-15     Moderate <= 12.7ppm       Nonatt.
Fairfax Severe-15             Nonatt.
Fairfax Co Severe-15             Nonatt.
Falls Church Severe-15             Nonatt.
Loudoun Co Severe-15             Nonatt.
Manassas Severe-15             Nonatt.
Manassas Park Severe-15             Nonatt.
Prince William Co Severe-15             Nonatt.

WEST VIRGINIA (Region III)
  Charleston, WV Maintenance 8-Hour Ozone Category/Classification: Former Subpart 1
Kanawha Co   Moderate         Nonatt. Nonatt.
Putnam Co   Moderate         Nonatt. Nonatt.
  Huntington-Ashland, WV-KY Maintenance 8-Hour Ozone Category/Classification: Former Subpart 1
Cabell Co   Moderate           Nonatt.
Wayne Co   Moderate           Nonatt.
  Parkersburg-Marietta, WV-OH Maintenance 8-Hour Ozone Category/Classification: Former Subpart 1
Wood Co   Moderate           Nonatt.
  Steubenville-Weirton, OH-WV Maintenance 8-Hour Ozone Category/Classification: Former Subpart 1
Brooke Co           Moderate Nonatt. Nonatt.
Hancock Co           Moderate Nonatt. Nonatt.
  Wheeling, WV-OH Maintenance 8-Hour Ozone Category/Classification: Former Subpart 1
Marshall Co               Nonatt.
Ohio Co               Nonatt.

WISCONSIN (Region V)
  Door Co, WI Nonattainment 8-Hour Ozone Category/Classification: Former Subpart 1
Door Co   Rural Transport (Marginal)            
  Kewaunee Co, WI Maintenance 8-Hour Ozone Category/Classification: Former Subpart 1
Kewaunee Co   Moderate            
  Manitowoc Co, WI Nonattainment 8-Hour Ozone Category/Classification: Former Subpart 1
Manitowoc Co   Moderate            
  Milwaukee-Racine, WI Nonattainment 8-Hour Ozone Category/Classification: Moderate
Kenosha Co Severe-17              
Milwaukee Co Severe-17           Nonatt.  
Ozaukee Co Severe-17              
Racine Co Severe-17           Nonatt.  
Washington Co Severe-17              
Waukesha Co Severe-17           Nonatt.  
  Sheboygan, WI Nonattainment 8-Hour Ozone Category/Classification: Moderate
Sheboygan Co   Moderate            

Notes:
* The 1-hour ozone standard, as well as designations and classifications for all 1-hour ozone nonattainment and maintenance areas, have been revoked except for the Greensboro, NC, Nashville, TN, and Denver, CO maintenance areas. See details here.

There are a few counties that are split between 8-hour ozone areas:

  • Kern Co, CA is split between the San Joaquin (Serious) and Kern Co (Eastern Kern), CA (Subpart 1) 8-hour ozone areas. The northeastern portion of the county is attainment. (Severe-15) and Kern Co (Eastern Kern) (Serious).
  • Los Angeles Co, CA is split between Los Angeles South Coast (Severe 17) and Los Angeles-San Bernardino Cos (W Mojave), CA (Antelope Valley) (Moderate) 8-hour ozone areas. The previous 1-hour ozone areas were Los Angeles South Coast (Extreme) and SE Desert (Severe-17).
  • Riverside Co, CA is split between the Los Angeles South Coast (Severe 17) and Riverside Co, (Coachella Valley), CA (Serious) 8-hour ozone areas. ozone areas were Los Angeles South Coast (Extreme) and SE Desert (Severe-17). The previous 1-hour ozone SE Desert (Severe-17) was split into Los Angeles-San Bernardino Cos (W Mojave), CA (Antelope Valley) (Moderate) and Riverside Co, (Coachella Valley), CA (Serious) 8-hour ozone areas.
  • San Bernardino Co, CA is split between Los Angeles South Coast (Severe 17) and Los Angeles-San Bernardino Cos (W Mojave), CA (Antelope Valley) (Moderate) 8-hour ozone areas. The previous 1-hour ozone areas were Los Angeles South Coast (Extreme) and SE Desert (Severe-17).
  • Solano Co, CA is split between San Francisco (Marginal) and Sacramento (Serious) 8-hour ozone areas. This is the same as the previous 1-hour area. The previous 1-hour ozone areas were San Francisco (Other) and Sacramento (Severe-15).
  • Sutter Co, CA is split between the Sutter Co (Sutter Buttes) (Subpart 1) and Sacramento (Serious) 8-hour ozone areas. The previous 1-hour ozone areas were Yuba City (Section 185A) and Sacramento (Severe-15).
There are a few counties that are split between one or more previous 1-hour ozone nonattainment areas that are in one 8-hr area:
  • Fairfield and Litchfield Cos, CT are in both the New York (Severe-17) and the Greater CT (Serious) previous 1-hour nonattainment area, but are in the New York 8-hour area.
  • Hillsborough Co, NH is in both the Boston-Lawrence-Worcester (E. MA), MA-NH (Serious) and the Manchester, NH (Marginal) previous 1-hour nonattainment area, but is in the Boston-Manchester-Portsmouth (SE) 8-hour area.
  • Rockingham Co, NH is in Boston-Lawrence-Worcester (E. MA), MA-NH (Serious), Manchester, NH (Marginal) and Portsmouth-Dover-Rochester, NH (Serious) previous 1-hour nonattainment areas, but is in the Boston-Manchester-Portsmouth (SE), NH 8-hour area.
  • Orange Co, NY is in both the New York-N. New Jersey-Long Island, NY-NJ-CT (Severe-17) and the Poughkeepsie, NY (Moderate) previous 1-hour nonattainment areas, but is in the Poughkeepsie, NY 8-hour area.
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