What Does NAA Stand For?
NAA stands for Nonattainment Area
The term "Nonattainment Area" (NAA) refers to a geographical region designated by the Environmental Protection Agency (EPA) where air quality does not meet established national ambient air quality standards (NAAQS). These areas are identified based on monitored levels of specific air pollutants, such as ozone, particulate matter, and sulfur dioxide. The designation triggers requirements for state and local governments to implement measures aimed at improving air quality and achieving compliance with federal standards.
Added on 14th April 2008 | Last edited on 16th June 2025 | Edit Acronym