An air quality alert was reported by the NWS San Diego CA on Thursday at 12:22 p.m. in effect until Saturday at midnight for ...

A new law tightens building and emissions regulations for large distribution warehouses to mitigate air pollution and traffic in surrounding communities.

At 7:50 a.m. on Thursday, the NWS Phoenix AZ reported an air quality alert in effect until Saturday at midnight. The alert is for Imperial County Southwest, Imperial County West and Imperial Valley.

The study estimates that this reduction in black carbon will significantly lower cancer risk for people regularly exposed to ...

The National Weather Service reported an air quality alert at 7:28 a.m. on Thursday in effect until 7 p.m. for Dixon and Dakota counties.

The red-level air quality index (AQI) category—covering values from 151 to 200—means the air is unhealthy for everyone, not ...

Lingering smoke from prairie fires left air quality being temporarily deemed unhealthy the morning of April 16 in the Topeka area.

Mount Rushmore tourists hit with air quality warning - Air quality index values were estimated to have peaked at 161 at a key ...

Despite modern cars generally being cleaner and more fuel efficient, a University of California, Riverside study shows that higher speed limits can make city air dirtier.

We all know outdoor pollution is a problem, but the chances are you're not too worried about the quality of air in your home ... pollution levels on this interactive pollution forecast map, maintained ...

Air-quality officials are advising people in several Southern California cities to keep their doors and windows closed amid ...