Skip to main content
U.S. flag

An official website of the United States government

Here’s how you know

Dot gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

HTTPS

Secure .gov websites use HTTPS
A lock (LockA locked padlock) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

    • Environmental Topics
    • Air
    • Bed Bugs
    • Cancer
    • Chemicals, Toxics, and Pesticide
    • Emergency Response
    • Environmental Information by Location
    • Health
    • Land, Waste, and Cleanup
    • Lead
    • Mold
    • Radon
    • Research
    • Science Topics
    • Water Topics
    • A-Z Topic Index
    • Laws & Regulations
    • By Business Sector
    • By Topic
    • Compliance
    • Enforcement
    • Laws and Executive Orders
    • Regulations
    • Report a Violation
    • Environmental Violations
    • Fraud, Waste or Abuse
    • About EPA
    • Our Mission and What We Do
    • Headquarters Offices
    • Regional Offices
    • Labs and Research Centers
    • Planning, Budget, and Results
    • Organization Chart
    • EPA History

Breadcrumb

  1. Home
  2. Nitrogen Dioxide Designations

2010 Nitrogen Dioxide Standards - State Recommendations and EPA Responses

EPA's Final Designations

All areas have been designated as unclassifiable/attainment.

Areas Designated under the 2010 Air Quality Standards

States submitted recommendations to EPA for nitrogen dioxide (NO2) attainment and nonattainment areas in 2011. Some states submitted additional recommendations in 2010 based on more recent or new monitoring data.

State area designations for the 2010 NO2 air quality standards are summarized here.

Tribal information is available on the Tribal Recommendations page.

Recommendation Documents

The documents listed below are state and tribe responses to EPA's request for recommendations on the designation of areas for the NO2 standard and EPA's responses to those submittals. These responses are provided here in PDF format for INFORMATIONAL PURPOSES ONLY and do not represent EPA's views on the appropriateness or adequacy of a state's or a tribe's recommendations.

The quality of these PDF files is quite variable and is the result of the quality of the documents provided by the states.

State
Alabama Delaware Indiana Michigan New Jersey Oregon Utah
Alaska District of Columbia Iowa Minnesota New Mexico Pennsylvania Vermont
American Samoa Florida Kansas Mississippi New York Puerto Rico Virgin Islands
Arizona Georgia Kentucky Missouri North Carolina Rhode Island Virginia
Arkansas Guam Louisiana Montana North Dakota South Carolina Washington
California Hawaii Maine Nebraska Northern Mariana Islands South Dakota West Virginia
Colorado Idaho Maryland Nevada Ohio Tennessee Wisconsin
Connecticut Illinois Massachusetts New Hampshire Oklahoma Texas Wyoming

Nitrogen Dioxide Designations

  • Learn About Nitrogen Dioxide Designations
  • Regulatory Actions
  • State Designations
  • Tribal Designations
Contact Us about Nitrogen Dioxide Designations
Contact Us to ask a question, provide feedback, or report a problem.
Last updated on April 29, 2025
  • Assistance
  • Spanish
  • Arabic
  • Chinese (simplified)
  • Chinese (traditional)
  • French
  • Haitian Creole
  • Korean
  • Portuguese
  • Russian
  • Tagalog
  • Vietnamese
United States Environmental Protection Agency

Discover.

  • Accessibility Statement
  • Budget & Performance
  • Contracting
  • EPA www Web Snapshot
  • Grants
  • No FEAR Act Data
  • Plain Writing
  • Privacy
  • Privacy and Security Notice

Connect.

  • Data
  • Inspector General
  • Jobs
  • Newsroom
  • Regulations.gov
  • Subscribe
  • USA.gov
  • White House

Ask.

  • Contact EPA
  • EPA Disclaimers
  • Hotlines
  • FOIA Requests
  • Frequent Questions
  • Site Feedback

Follow.