ECHO Clean Air Tracking Tool - Air Monitoring Stations

The ECHO Clean Air Tracking Tool (ECATT) is a US EPA interface and repository for Clean Air Act data that can be used to evaluate emissions at stationary sources of air pollution and analyze general air quality.

The Air Monitoring Station (AMS) search provides data about U.S. air monitoring stations that measure ambient or outdoor concentrations of Hazardous Air Pollutants (HAPs) and Criteria Air Pollutants (CAPs). The search can be used to identify areas with high pollutant concentrations and higher potential for health impacts and identify the facilities emitting in those areas. Read more about HAPs and CAPs.

The AMS search also incorporates AirToxScreen modeled data so users can identify areas with elevated cancer risk or higher potential for other health impacts and compare those areas to nearby emissions concentrations measured by air monitors to identify potential risk hotspots. Users can screen facilities for further evaluation by identifying measured pollutant concentrations larger than the modeled amount.