Green Book 8-Hour Ozone (2015) Area Information
This section provides detailed information about designations, classifications and the nonattainment area status for the 8-Hour Ozone (2015) National Ambient Air Quality Standards (NAAQS). Original areas were designated August 3, 2018. An additional area was designated effective September 24, 2018. Area designations and/or boundaries were revised effective July 14, 2021. Area boundaries were revised effective December 30, 2021.
See Ozone Designations and Classifications
- All Designated Area Selections (Nonattainment and Maintenance)
- Nonattainment Area Selections
- Maintenance Area Selections (Redesignated from Nonattainment)
- Area Maps
Map and GIS shapefile downloads are available from the Downloads page (see sidebar link)
- Other Information
- Summary Reports
- Comparison to Other Standards
- Designation and NAAQS Information Related to the 2015 8-Hour Ozone Standard
- Federal Register Notices Related to 8-Hour Ozone (2015) Areas
- Classification Changes
- All Federal Register Notices