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

As of July 31, 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
8-Hr Ozone Area/State/County
(P = Part County)		 1-Hr
Ozone
Nonatt.* 		1-Hr
Ozone
Maint.* 		CO
Nonatt. 		CO
Maint. 		PM-10
Nonatt. 		PM-10
Maint. 		PM-2.5
Nonatt.

Albany-Schenectady-Troy, NY ---- Nonattainment 8-Hour Ozone Category/Classification: Former Subpart 1
NEW YORK (Region II)
Albany Co Marginal            
Greene Co Marginal            
Montgomery Co Marginal            
Rensselaer Co Marginal            
Saratoga Co Marginal            
Schenectady Co Marginal            
Schoharie Co              

Allegan Co, MI ---- Nonattainment 8-Hour Ozone Category/Classification: Former Subpart 1
MICHIGAN (Region V)
Allegan Co   Incomplete Data          

Allentown-Bethlehem-Easton, PA ---- Maintenance 8-Hour Ozone Category/Classification: Former Subpart 1
PENNSYLVANIA (Region III)
Carbon Co Marginal            
Lehigh Co Marginal            
Northampton Co Marginal            

Altoona, PA ---- Maintenance 8-Hour Ozone Category/Classification: Former Subpart 1
PENNSYLVANIA (Region III)
Blair Co Marginal            

Amador and Calaveras Cos (Central Mtn), CA ---- Nonattainment 8-Hour Ozone Category/Classification: Former Subpart 1
CALIFORNIA (Region IX)
Amador Co              
Calaveras Co              

Atlanta, GA ---- Nonattainment 8-Hour Ozone Category/Classification: Moderate
GEORGIA (Region IV)
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.

Baltimore, MD ---- Nonattainment 8-Hour Ozone Category/Classification: Moderate
MARYLAND (Region III)
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.

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

Beaumont-Port Arthur, TX ---- Nonattainment 8-Hour Ozone Category/Classification: Moderate
TEXAS (Region VI)
Hardin Co Serious            
Jefferson Co Serious            
Orange Co Serious            

Benton Harbor, MI ---- Maintenance 8-Hour Ozone Category/Classification: Former Subpart 1
MICHIGAN (Region V)
Berrien Co              

Benzie Co, MI ---- Maintenance 8-Hour Ozone Category/Classification: Former Subpart 1
MICHIGAN (Region V)
Benzie Co              

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

Boston-Lawrence-Worcester (E. MA), MA ---- Nonattainment 8-Hour Ozone Category/Classification: Moderate
MASSACHUSETTS (Region I)
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      

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

Buffalo-Niagara Falls, NY ---- Nonattainment 8-Hour Ozone Category/Classification: Former Subpart 1
NEW YORK (Region II)
Erie Co Marginal            
Niagara Co Marginal            

Canton-Massillon, OH ---- Maintenance 8-Hour Ozone Category/Classification: Former Subpart 1
OHIO (Region V)
Stark Co   Marginal         Nonatt.

Cass Co, MI ---- Maintenance 8-Hour Ozone Category/Classification: Marginal
MICHIGAN (Region V)
Cass Co              

Charleston, WV ---- Maintenance 8-Hour Ozone Category/Classification: Former Subpart 1
WEST VIRGINIA (Region III)
Kanawha Co   Moderate         Nonatt.
Putnam Co   Moderate         Nonatt.

Charlotte-Gastonia-Rock Hill, NC-SC ---- Nonattainment 8-Hour Ozone Category/Classification: Moderate
NORTH CAROLINA (Region IV)
Cabarrus Co              
Gaston Co   Moderate          
Iredell Co (P)              
Lincoln Co              
Mecklenburg Co   Moderate   Not Classified      
Rowan Co              
Union Co              
SOUTH CAROLINA (Region IV)
York Co (P)              

Chicago-Gary-Lake County, IL-IN ---- Nonattainment 8-Hour Ozone Category/Classification: Moderate
ILLINOIS (Region V)
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.
INDIANA (Region V)
Lake Co Severe-17     Not Classified   Moderate Nonatt.
Porter Co Severe-17           Nonatt.

Chico, CA ---- Nonattainment 8-Hour Ozone Category/Classification: Former Subpart 1
CALIFORNIA (Region IX)
Butte Co Section 185A     Moderate <= 12.7ppm      

Cincinnati-Hamilton, OH-KY-IN ---- Nonattainment 8-Hour Ozone Category/Classification: Former Subpart 1
INDIANA (Region V)
Dearborn Co (P)             Nonatt.
KENTUCKY (Region IV)
Boone Co   Moderate         Nonatt.
Campbell Co   Moderate         Nonatt.
Kenton Co   Moderate         Nonatt.
OHIO (Region V)
Butler Co   Moderate         Nonatt.
Clermont Co   Moderate         Nonatt.
Clinton Co   Section 185A          
Hamilton Co   Moderate         Nonatt.
Warren Co   Moderate         Nonatt.

Clarksville-Hopkinsville, TN-KY ---- Maintenance 8-Hour Ozone Category/Classification: Former Subpart 1
KENTUCKY (Region IV)
Christian Co              
TENNESSEE (Region IV)
Montgomery Co              

Clearfield and Indiana Cos, PA ---- Maintenance 8-Hour Ozone Category/Classification: Former Subpart 1
PENNSYLVANIA (Region III)
Clearfield Co              
Indiana Co             Nonatt.

Cleveland-Akron-Lorain, OH ---- Nonattainment 8-Hour Ozone Category/Classification: Moderate
OHIO (Region V)
Ashtabula Co   Moderate         Nonatt.
Cuyahoga Co   Moderate   Moderate <= 12.7ppm   Moderate Nonatt.
Geauga Co   Moderate          
Lake Co   Moderate         Nonatt.
Lorain Co   Moderate         Nonatt.
Medina Co   Moderate         Nonatt.
Portage Co   Moderate         Nonatt.
Summit Co   Moderate         Nonatt.

Columbus, OH ---- Nonattainment 8-Hour Ozone Category/Classification: Former Subpart 1
OHIO (Region V)
Delaware Co   Marginal         Nonatt.
Fairfield Co             Nonatt.
Franklin Co   Marginal         Nonatt.
Knox Co              
Licking Co   Marginal         Nonatt.
Madison Co              

Dallas-Fort Worth, TX ---- Nonattainment 8-Hour Ozone Category/Classification: Moderate
TEXAS (Region VI)
Collin Co Serious            
Dallas Co Serious            
Denton Co Serious            
Ellis Co              
Johnson Co              
Kaufman Co              
Parker Co              
Rockwall Co              
Tarrant Co Serious            

Dayton-Springfield, OH ---- Maintenance 8-Hour Ozone Category/Classification: Former Subpart 1
OHIO (Region V)
Clark Co   Moderate         Nonatt.
Greene Co   Moderate         Nonatt.
Miami Co   Moderate          
Montgomery Co   Moderate         Nonatt.

Denver-Boulder-Greeley-Ft Collins-Love., CO ---- Nonattainment 8-Hour Ozone Category/Classification: Former Subpart 1
COLORADO (Region VIII)
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      

Detroit-Ann Arbor, MI ---- Maintenance 8-Hour Ozone Category/Classification: Marginal
MICHIGAN (Region V)
Lenawee Co              
Livingston Co   Moderate         Nonatt.
Macomb Co   Moderate   Not Classified     Nonatt.
Monroe Co   Moderate         Nonatt.
Oakland Co   Moderate   Not Classified     Nonatt.
St Clair Co   Moderate         Nonatt.
Washtenaw Co   Moderate         Nonatt.
Wayne Co   Moderate   Not Classified   Moderate Nonatt.

Door Co, WI ---- Nonattainment 8-Hour Ozone Category/Classification: Former Subpart 1
WISCONSIN (Region V)
Door Co   Rural Transport (Marginal)          

Erie, PA ---- Maintenance 8-Hour Ozone Category/Classification: Former Subpart 1
PENNSYLVANIA (Region III)
Erie Co Marginal            

Essex Co (Whiteface Mtn), NY ---- Nonattainment 8-Hour Ozone Category/Classification: Former Subpart 1
NEW YORK (Region II)
Essex Co (P) Rural Transport (Marginal)            

Evansville, IN ---- Maintenance 8-Hour Ozone Category/Classification: Former Subpart 1
INDIANA (Region V)
Vanderburgh Co   Marginal         Nonatt.
Warrick Co             Nonatt.

Flint, MI ---- Maintenance 8-Hour Ozone Category/Classification: Former Subpart 1
MICHIGAN (Region V)
Genesee Co   Section 185A          
Lapeer Co              

Fort Wayne, IN ---- Maintenance 8-Hour Ozone Category/Classification: Former Subpart 1
INDIANA (Region V)
Allen Co              

Franklin Co, PA ---- Maintenance 8-Hour Ozone Category/Classification: Former Subpart 1
PENNSYLVANIA (Region III)
Franklin Co Incomplete Data            

Fredericksburg, VA ---- Maintenance 8-Hour Ozone Category/Classification: Moderate
VIRGINIA (Region III)
Fredericksburg              
Spotsylvania Co              
Stafford Co Severe-15            

Grand Rapids, MI ---- Maintenance 8-Hour Ozone Category/Classification: Former Subpart 1
MICHIGAN (Region V)
Kent Co   Moderate          
Ottawa Co   Moderate          

Greater Connecticut, CT ---- Nonattainment 8-Hour Ozone Category/Classification: Moderate
CONNECTICUT (Region I)
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            

Greene Co, IN ---- Maintenance 8-Hour Ozone Category/Classification: Former Subpart 1
INDIANA (Region V)
Greene Co              

Greene Co, PA ---- Maintenance 8-Hour Ozone Category/Classification: Former Subpart 1
PENNSYLVANIA (Region III)
Greene Co Incomplete Data           Nonatt.

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

Harrisburg-Lebanon-Carlisle, PA ---- Maintenance 8-Hour Ozone Category/Classification: Former Subpart 1
PENNSYLVANIA (Region III)
Cumberland Co Marginal           Nonatt.
Dauphin Co Marginal           Nonatt.
Lebanon Co Marginal           Nonatt.
Perry Co Marginal            

Haywood and Swain Cos (Great Smoky NP), NC ---- Nonattainment 8-Hour Ozone Category/Classification: Former Subpart 1
NORTH CAROLINA (Region IV)
Haywood Co (P)              
Swain Co (P)              

Houston-Galveston-Brazoria, TX ---- Nonattainment 8-Hour Ozone Category/Classification: Severe-15
TEXAS (Region VI)
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            

Huntington-Ashland, WV-KY ---- Maintenance 8-Hour Ozone Category/Classification: Former Subpart 1
KENTUCKY (Region IV)
Boyd Co   Moderate         Nonatt.
WEST VIRGINIA (Region III)
Cabell Co   Moderate         Nonatt.
Wayne Co   Moderate         Nonatt.

Huron Co, MI ---- Maintenance 8-Hour Ozone Category/Classification: Former Subpart 1
MICHIGAN (Region V)
Huron Co              

Imperial Co, CA ---- Nonattainment 8-Hour Ozone Category/Classification: Moderate
CALIFORNIA (Region IX)
Imperial Co Section 185A       Serious    

Indianapolis, IN ---- Maintenance 8-Hour Ozone Category/Classification: Former Subpart 1
INDIANA (Region V)
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
INDIANA (Region V)
Jackson Co              

Jamestown, NY ---- Nonattainment 8-Hour Ozone Category/Classification: Former Subpart 1
NEW YORK (Region II)
Chautauqua Co              

Jefferson Co, NY ---- Nonattainment 8-Hour Ozone Category/Classification: Moderate
NEW YORK (Region II)
Jefferson Co Marginal            

Johnstown, PA ---- Maintenance 8-Hour Ozone Category/Classification: Former Subpart 1
PENNSYLVANIA (Region III)
Cambria Co Marginal           Nonatt.

Kalamazoo-Battle Creek, MI ---- Maintenance 8-Hour Ozone Category/Classification: Former Subpart 1
MICHIGAN (Region V)
Calhoun Co              
Kalamazoo Co              
Van Buren Co              

Kent and Queen Anne's Cos, MD ---- Maintenance 8-Hour Ozone Category/Classification: Marginal
MARYLAND (Region III)
Kent Co   Marginal          
Queen Annes Co   Marginal          

Kern Co (Eastern Kern), CA ---- Nonattainment 8-Hour Ozone Category/Classification: Former Subpart 1
CALIFORNIA (Region IX)
Kern Co (P)   Serious   Not Classified Serious Serious Nonatt.

Kewaunee Co, WI ---- Maintenance 8-Hour Ozone Category/Classification: Former Subpart 1
WISCONSIN (Region V)
Kewaunee Co   Moderate          

Knoxville, TN ---- Nonattainment 8-Hour Ozone Category/Classification: Former Subpart 1
TENNESSEE (Region IV)
Anderson Co             Nonatt.
Blount Co             Nonatt.
Cocke Co (P)              
Jefferson Co              
Knox Co   Marginal         Nonatt.
Loudon Co             Nonatt.
Sevier Co              

La Porte, IN ---- Maintenance 8-Hour Ozone Category/Classification: Marginal
INDIANA (Region V)
La Porte Co              

Lancaster, PA ---- Maintenance 8-Hour Ozone Category/Classification: Marginal
PENNSYLVANIA (Region III)
Lancaster Co Marginal           Nonatt.

Lansing-East Lansing, MI ---- Maintenance 8-Hour Ozone Category/Classification: Former Subpart 1
MICHIGAN (Region V)
Clinton Co              
Eaton Co              
Ingham Co              

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

Lima, OH ---- Maintenance 8-Hour Ozone Category/Classification: Former Subpart 1
OHIO (Region V)
Allen Co              

Los Angeles South Coast Air Basin, CA ---- Nonattainment 8-Hour Ozone Category/Classification: Severe 17
CALIFORNIA (Region IX)
Los Angeles Co (P) Extreme     Serious Serious   Nonatt.
Orange Co Extreme     Serious Serious   Nonatt.
Riverside Co (P) Extreme     Serious Serious   Nonatt.
San Bernardino Co (P) Extreme     Serious Serious   Nonatt.

Los Angeles-San Bernardino Cos(W Mojave),CA ---- Nonattainment 8-Hour Ozone Category/Classification: Moderate
CALIFORNIA (Region IX)
Los Angeles Co (P) Severe-17     Serious Serious   Nonatt.
San Bernardino Co (P) Severe-17     Serious Serious   Nonatt.

Louisville, KY-IN ---- Maintenance 8-Hour Ozone Category/Classification: Former Subpart 1
INDIANA (Region V)
Clark Co   Moderate         Nonatt.
Floyd Co   Moderate         Nonatt.
KENTUCKY (Region IV)
Bullitt Co   Moderate         Nonatt.
Jefferson Co   Moderate         Nonatt.
Oldham Co   Moderate          

Macon, GA ---- Maintenance 8-Hour Ozone Category/Classification: Former Subpart 1
GEORGIA (Region IV)
Bibb Co             Nonatt.
Monroe Co (P)             Nonatt.

Madison and Page Cos (Shenandoah NP), VA ---- Maintenance 8-Hour Ozone Category/Classification: Former Subpart 1
VIRGINIA (Region III)
Madison Co (P)              
Page Co (P)              

Manitowoc Co, WI ---- Nonattainment 8-Hour Ozone Category/Classification: Former Subpart 1
WISCONSIN (Region V)
Manitowoc Co   Moderate          

Mariposa and Tuolumne Cos (Southern Mtn),CA ---- Nonattainment 8-Hour Ozone Category/Classification: Former Subpart 1
CALIFORNIA (Region IX)
Mariposa Co              
Tuolumne Co              

Mason Co, MI ---- Maintenance 8-Hour Ozone Category/Classification: Former Subpart 1
MICHIGAN (Region V)
Mason Co              

Memphis, TN-AR ---- Nonattainment 8-Hour Ozone Category/Classification: Moderate
ARKANSAS (Region VI)
Crittenden Co              
TENNESSEE (Region IV)
Shelby Co   Marginal   Moderate <= 12.7ppm      

Milwaukee-Racine, WI ---- Nonattainment 8-Hour Ozone Category/Classification: Moderate
WISCONSIN (Region V)
Kenosha Co Severe-17            
Milwaukee Co Severe-17            
Ozaukee Co Severe-17            
Racine Co Severe-17            
Washington Co Severe-17            
Waukesha Co Severe-17            

Muncie, IN ---- Maintenance 8-Hour Ozone Category/Classification: Former Subpart 1
INDIANA (Region V)
Delaware Co              

Murray Co (Chattahoochee Nat Forest), GA ---- Maintenance 8-Hour Ozone Category/Classification: Former Subpart 1
GEORGIA (Region IV)
Murray Co (P)              

Muskegon, MI ---- Maintenance 8-Hour Ozone Category/Classification: Marginal
MICHIGAN (Region V)
Muskegon Co   Moderate          

Nevada Co. (Western Part), CA ---- Nonattainment 8-Hour Ozone Category/Classification: Former Subpart 1
CALIFORNIA (Region IX)
Nevada Co (P)              

New York-N. New Jersey-Long Island,NY-NJ-CT ---- Nonattainment 8-Hour Ozone Category/Classification: Moderate
CONNECTICUT (Region I)
Fairfield Co Severe-17     Moderate > 12.7ppm     Nonatt.
Middlesex Co Serious     Moderate <= 12.7ppm      
New Haven Co Serious     Not Classified   Moderate Nonatt.
NEW JERSEY (Region II)
Bergen Co Severe-17     Moderate > 12.7ppm     Nonatt.
Essex Co Severe-17     Moderate > 12.7ppm     Nonatt.
Hudson Co Severe-17     Moderate > 12.7ppm     Nonatt.
Hunterdon Co Severe-17            
Middlesex Co Severe-17     Not Classified     Nonatt.
Monmouth Co Severe-17     Not Classified     Nonatt.
Morris Co Severe-17     Not Classified     Nonatt.
Passaic Co Severe-17     Moderate > 12.7ppm     Nonatt.
Somerset Co Severe-17     Not Classified     Nonatt.
Sussex Co Severe-17            
Union Co Severe-17     Moderate > 12.7ppm     Nonatt.
Warren Co Marginal            
NEW YORK (Region II)
Bronx Co Severe-17     Moderate > 12.7ppm     Nonatt.
Kings Co Severe-17     Moderate > 12.7ppm     Nonatt.
Nassau Co Severe-17     Moderate > 12.7ppm     Nonatt.
New York Co Severe-17     Moderate > 12.7ppm Moderate   Nonatt.
Queens Co Severe-17     Moderate > 12.7ppm     Nonatt.
Richmond Co Severe-17     Moderate > 12.7ppm     Nonatt.
Rockland Co Severe-17           Nonatt.
Suffolk Co Severe-17           Nonatt.
Westchester Co Severe-17     Moderate > 12.7ppm     Nonatt.

Norfolk-Virginia Beach-Newport News (HR),VA ---- Maintenance 8-Hour Ozone Category/Classification: Marginal
VIRGINIA (Region III)
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          

Parkersburg-Marietta, WV-OH ---- Maintenance 8-Hour Ozone Category/Classification: Former Subpart 1
OHIO (Region V)
Washington Co             Nonatt.
WEST VIRGINIA (Region III)
Wood Co   Moderate         Nonatt.

Philadelphia-Wilmin-Atlantic Ci,PA-NJ-MD-DE ---- Nonattainment 8-Hour Ozone Category/Classification: Moderate
DELAWARE (Region III)
Kent Co Severe-15            
New Castle Co Severe-15           Nonatt.
Sussex Co Marginal            
MARYLAND (Region III)
Cecil Co Severe-15            
NEW JERSEY (Region II)
Atlantic Co Moderate     Not Classified      
Burlington Co Severe-15     Not Classified     Nonatt.
Camden Co Severe-15     Moderate <= 12.7ppm     Nonatt.
Cape May Co Moderate            
Cumberland Co Severe-15            
Gloucester Co Severe-15           Nonatt.
Mercer Co Severe-15     Not Classified     Nonatt.
Ocean Co Severe-17     Not Classified      
Salem Co Severe-15     Not Classified      
PENNSYLVANIA (Region III)
Bucks Co Severe-15           Nonatt.
Chester Co Severe-15           Nonatt.
Delaware Co Severe-15           Nonatt.
Montgomery Co Severe-15           Nonatt.
Philadelphia Co Severe-15     Moderate <= 12.7ppm     Nonatt.

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

Pittsburgh-Beaver Valley, PA ---- Nonattainment 8-Hour Ozone Category/Classification: Former Subpart 1
PENNSYLVANIA (Region III)
Allegheny Co   Moderate   Not Classified   Moderate Nonatt.
Armstrong Co   Moderate         Nonatt.
Beaver Co   Moderate         Nonatt.
Butler Co   Moderate         Nonatt.
Fayette Co   Moderate          
Washington Co   Moderate         Nonatt.
Westmoreland Co   Moderate         Nonatt.

Portland, ME ---- Maintenance 8-Hour Ozone Category/Classification: Marginal
MAINE (Region I)
Androscoggin Co (P) Moderate            
Cumberland Co (P) Moderate            
Sagadahoc Co Moderate            
York Co (P) Moderate            

Poughkeepsie, NY ---- Nonattainment 8-Hour Ozone Category/Classification: Moderate
NEW YORK (Region II)
Dutchess Co Moderate            
Orange Co Severe-17           Nonatt.
Putnam Co Moderate            

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

Raleigh-Durham-Chapel Hill, NC ---- Maintenance 8-Hour Ozone Category/Classification: Former Subpart 1
NORTH CAROLINA (Region IV)
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      

Reading, PA ---- Maintenance 8-Hour Ozone Category/Classification: Former Subpart 1
PENNSYLVANIA (Region III)
Berks Co   Moderate         Nonatt.

Richmond-Petersburg, VA ---- Maintenance 8-Hour Ozone Category/Classification: Marginal
VIRGINIA (Region III)
Charles City Co   Moderate          
Chesterfield Co   Moderate          
Colonial Heights   Moderate          
Hanover Co   Moderate          
Henrico Co   Moderate          
Hopewell   Moderate          
Petersburg              
Prince George Co              
Richmond   Moderate          

Riverside Co, (Coachella Valley), CA ---- Nonattainment 8-Hour Ozone Category/Classification: Serious
CALIFORNIA (Region IX)
Riverside Co (P) Severe-17     Serious Serious   Nonatt.

Rochester, NY ---- Nonattainment 8-Hour Ozone Category/Classification: Former Subpart 1
NEW YORK (Region II)
Genesee Co              
Livingston Co              
Monroe Co              
Ontario Co              
Orleans Co              
Wayne Co              

Rocky Mount, NC ---- Maintenance 8-Hour Ozone Category/Classification: Former Subpart 1
NORTH CAROLINA (Region IV)
Edgecombe Co              
Nash Co              

Sacramento Metro, CA ---- Nonattainment 8-Hour Ozone Category/Classification: Serious
CALIFORNIA (Region IX)
El Dorado Co (P) Severe-15     Moderate <= 12.7ppm      
Placer Co (P) Severe-15     Moderate <= 12.7ppm      
Sacramento Co Severe-15     Moderate <= 12.7ppm Moderate    
Solano Co (P) Severe-15     Moderate <= 12.7ppm      
Sutter Co (P) Severe-15            
Yolo Co Severe-15     Moderate <= 12.7ppm      

San Diego, CA ---- Nonattainment 8-Hour Ozone Category/Classification: Former Subpart 1
CALIFORNIA (Region IX)
San Diego Co (P)   Serious   Moderate <= 12.7ppm      

San Francisco Bay Area, CA ---- Nonattainment 8-Hour Ozone Category/Classification: Marginal
CALIFORNIA (Region IX)
Alameda Co Other     Moderate <= 12.7ppm      
Contra Costa Co Other     Moderate <= 12.7ppm      
Marin Co Other     Moderate <= 12.7ppm      
Napa Co Other     Moderate <= 12.7ppm      
San Francisco Co Other     Moderate <= 12.7ppm      
San Mateo Co Other     Moderate <= 12.7ppm      
Santa Clara Co Other     Moderate <= 12.7ppm      
Solano Co (P) Other     Moderate <= 12.7ppm      
Sonoma Co (P) Other     Moderate <= 12.7ppm      

San Joaquin Valley, CA ---- Nonattainment 8-Hour Ozone Category/Classification: Serious
CALIFORNIA (Region IX)
Fresno Co Extreme     Moderate > 12.7ppm   Serious Nonatt.
Kern Co (P) Extreme     Not Classified Serious Serious Nonatt.
Kings Co Extreme         Serious Nonatt.
Madera Co Extreme         Serious Nonatt.
Merced Co Extreme           Nonatt.
San Joaquin Co Extreme     Moderate <= 12.7ppm   Serious Nonatt.
Stanislaus Co Extreme     Moderate <= 12.7ppm   Serious Nonatt.
Tulare Co Extreme         Serious Nonatt.

Scranton-Wilkes-Barre, PA ---- Maintenance 8-Hour Ozone Category/Classification: Former Subpart 1
PENNSYLVANIA (Region III)
Lackawanna Co Marginal            
Luzerne Co Marginal            
Monroe Co Marginal            
Wyoming Co Marginal            

Sheboygan, WI ---- Nonattainment 8-Hour Ozone Category/Classification: Moderate
WISCONSIN (Region V)
Sheboygan Co   Moderate          

South Bend-Elkhart, IN ---- Maintenance 8-Hour Ozone Category/Classification: Former Subpart 1
INDIANA (Region V)
Elkhart Co   Marginal          
St Joseph Co   Marginal          

Springfield (Western MA), MA ---- Nonattainment 8-Hour Ozone Category/Classification: Moderate
MASSACHUSETTS (Region I)
Berkshire Co Serious            
Franklin Co Serious            
Hampden Co Serious     Not Classified      
Hampshire Co Serious            

St Louis, MO-IL ---- Nonattainment 8-Hour Ozone Category/Classification: Moderate
ILLINOIS (Region V)
Jersey Co   Marginal          
Madison Co   Serious       Moderate Nonatt.
Monroe Co   Serious         Nonatt.
St Clair Co   Serious         Nonatt.
MISSOURI (Region VII)
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.

State College, PA ---- Maintenance 8-Hour Ozone Category/Classification: Former Subpart 1
PENNSYLVANIA (Region III)
Centre Co              

Steubenville-Weirton, OH-WV ---- Maintenance 8-Hour Ozone Category/Classification: Former Subpart 1
OHIO (Region V)
Jefferson Co   Section 185A       Moderate Nonatt.
WEST VIRGINIA (Region III)
Brooke Co           Moderate Nonatt.
Hancock Co           Moderate Nonatt.

Sutter Co (Sutter Buttes), CA ---- Nonattainment 8-Hour Ozone Category/Classification: Former Subpart 1
CALIFORNIA (Region IX)
Sutter Co (P) Section 185A            

Terre Haute, IN ---- Maintenance 8-Hour Ozone Category/Classification: Former Subpart 1
INDIANA (Region V)
Vigo Co              

Tioga Co, PA ---- Maintenance 8-Hour Ozone Category/Classification: Former Subpart 1
PENNSYLVANIA (Region III)
Tioga Co              

Toledo, OH ---- Maintenance 8-Hour Ozone Category/Classification: Former Subpart 1
OHIO (Region V)
Lucas Co   Moderate          
Wood Co   Moderate          

Ventura Co, CA ---- Nonattainment 8-Hour Ozone Category/Classification: Serious
CALIFORNIA (Region IX)
Ventura Co (P) Severe-15            

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

Wheeling, WV-OH ---- Maintenance 8-Hour Ozone Category/Classification: Former Subpart 1
OHIO (Region V)
Belmont Co             Nonatt.
WEST VIRGINIA (Region III)
Marshall Co             Nonatt.
Ohio Co             Nonatt.

York, PA ---- Maintenance 8-Hour Ozone Category/Classification: Former Subpart 1
PENNSYLVANIA (Region III)
Adams Co Marginal            
York Co Marginal           Nonatt.

Youngstown-Warren-Sharon, OH-PA ---- Maintenance 8-Hour Ozone Category/Classification: Former Subpart 1
OHIO (Region V)
Columbiana Co   Incomplete Data          
Mahoning Co   Marginal          
Trumbull Co   Marginal          
PENNSYLVANIA (Region III)
Mercer Co Marginal            
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 now in one 8-hour ozone area:

  • Fairfield and Litchfield Cos, CT were in both the New York (Severe-17) and the Greater CT (Serious) previous 1-hour ozone nonattainment areas. Fairfield Co is completely in the New York 8-hour ozone area and Litchfield Co is completely in the Greater CT 8-hour ozone area.
  • Hillsborough Co, NH was in both the Boston-Lawrence-Worcester (E.MA), MA-NH (Serious) and the Manchester, NH (Marginal) previous 1-hour nonattainment areas, but is now in the Boston-Manchester-Portsmouth (SE) (Moderate) 8-hour ozone 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 ozone nonattainment areas, but is now in the Rockingham Co, NH was in Boston-Lawrence-Worcester (E. MA), MA-NH (Serious), Manchester, NH (Marginal) and Boston-Manchester-Portsmouth (SE), NH 8-hour ozone area.
  • Orange Co, NY was in both the New York-N. New Jersey-Long Island, NY-NJ-CT (Severe-17) and the Poughkeepsie, NY (Moderate) previous 1-hour ozone nonattainment areas, but is now in the Poughkeepsie, NY (Moderate) 8-hour ozone area.
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