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Air Quality Analysis

Air Quality Analysis

This site provides information for air quality data analysts inside and outside EPA. Much of the information is in the form of documented analyses that support EPA's National Ambient Air Quality Standards (NAAQS) reviews.

NAAQS Review Analysis

View analyses and data sets supporting the NAAQS review process for criteria air pollutants.

View analyses and data sets
Exceptional Events Analysis

Learn how exceptional events, such as wildfires, are handled with respect to the NAAQS.

Learn about exceptional events