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8-Hour Ozone Nonattainment Areas
(2008 Standard)

This page provides detailed information on designations and classifications of 8-hour ozone (2008) nonattainment areas.
  1. Nonattainment Area Selections
    1. Area Listings
      1. Nonattainment Areas
      2. Sorted by State/Area/County
      3. Sorted by Area/State/County
    2. Area Designation Data
      1. Air Quality Data, Population, Counties

  2. Area Maps
    Map and GIS shapefile downloads are available from the Downloads page (see sidebar link)
    1. National Maps
      1. National Map of 2008 Ozone Nonattainment Areas
    2. State Maps
      1. Individual State Maps with 2008 Ozone Nonattainment Areas

  3. Other Information
    1. Summary Reports
      1. Nonattainment Area Summary Report
    2. Comparison to Other Standards
      1. 8-Hour Ozone (1997 and 2008) and Previous 1-Hour Ozone State/County Detail Report

  4. Federal Register Notices Relating to Ozone Designations for the 2008 Standard
    1. Designation Notices
      1. Ozone (O3) Standards - Documents from Review Completed in 2008
      2. EPA's Revised Responses to Designation Recommendations From Illinois, Indiana, and Wisconsin for the 2008 Ozone Standards: Notice of Availability and Public Comment Period (February 14, 2012) (PDF)
      3. Air Quality Designations for the 2008 Ozone National Ambient Air Quality Standards (May 21, 2012) (PDF)
      4. Implementation of the 2008 National Ambient Air Quality Standards for Ozone: Nonattainment Area Classifications Approach, Attainment Deadlines and Revocation of the 1997 Ozone Standards for Transportation Conformity Purposes (May 21, 2012) (PDF)
      5. Air Quality Designations for the 2008 Ozone National Ambient Air Quality Standards for Several Counties in Illinois, Indiana, and Wisconsin; Corrections to Inadvertant Errors in Prior Designations (June 11, 2012) (PDF)

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