The EPA's new Trace Atmospheric Gas Analyzer, or TAGA bus, will be looking at the air quality in the area, tracking for the ...

The EPA measures regional air quality index (AQI) by how hazardous it is to the general public. Discover the AQI in your city by searching below.

The Environment Protection Agency’s new national ambient air quality guidelines have been welcomed by campaigners and experts as a step forward. The EPA announced last week the annual health ...