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National Air Toxics Assessment

2014 NATA

EPA's thorough evaluation of air toxics in the United States

On August 22, 2018, EPA released an update to the National Air Toxics Assessment (NATA). This national screening assessment used emissions and weather data from 2014 to estimate health risks from toxic air pollutants.

EPA has succeeded NATA with the Air Toxics Screening Assessment, or AirToxScreen, starting with the 2017 AirToxScreen. EPA updates AirToxScreen annually.

Visit the AirToxScreen website

View 2014 NATA Assessment Results