AirNow.gov was, in short, a main character of the Eastern Seaboard’s horrible, horrible week, and I wanted to know what that was like. To find out, I spoke with John Millett, the communications ...

AirNow.gov offers an interactive map allowing users to zoom out or drill down to see data for a single air quality monitor ...

AirNow.gov is a tool that provides the latest air quality levels, which you can track locally by entering your zip code, city or state.

On a foggy Tuesday morning in Pacifica, AirNow.gov’s Air Quality Index widget gave a value of 160 — unhealthy — for the 94044 ZIP code. With wildfires burning in the Bay Area to the south ...