Nonattainment Areas for Criteria Pollutants (Green Book)
The EPA Green Book provides detailed information about area National Ambient Air Quality Standards (NAAQS) designations, classifications and nonattainment status. Information is current as of the Green Book posted date and is available in reports, maps and data downloads.
Select one of the NAAQS below to view information about designated nonattainment areas.
Ozone
Particulate Matter (PM)
Sulfur Dioxide
Carbon Monoxide
Nitrogen Dioxide
National Multi-Pollutant
Green Book Website Disclaimer