NAA
Updated: September 3, 2024A nonattainment area (NAA) is an area considered to have air quality worse than the National Ambient Air Quality Standards as defined by the Clean Air Act Amendments of 1970–it is not attaining one or more standards.
A nonattainment area (NAA) is an area considered to have air quality worse than the National Ambient Air Quality Standards as defined by the Clean Air Act Amendments of 1970–it is not attaining one or more standards.