Skies over metro Phoenix were hazy and gray Tuesday morning. Here's what is causing poor air quality in Phoenix and when it ...

MRI evidence shows modest urban haze stiffens heart tissue, marking air pollution as a stealth cardiac saboteur beyond traditional risks like smoking.

Two NASA aircraft will carry out low-altitude flights and maneuvers over the L.A. Basin, Central Valley and Salton Sea ...

The American Lung Association gives Yakima a grade F as one of 23 most polluted cities in the U.S. for particle pollution.

Almost four out of every 10 people in the US live in an area where air pollution is considered bad enough to put their health at risk. The American Lung Association ranked cities with the worst air ...

The NWS San Diego CA reported an air quality alert at 3:49 p.m. on Monday in effect until Tuesday at 6 p.m. for San ...

The most effective filters have what’s called high-efficiency particulate air certification. Better known as HEPA filters, ...

An air quality alert was reported by the NWS San Diego CA on Sunday at 10:05 p.m. in effect until Tuesday at 8 a.m. for ...

Two wildfires burning in Southern California are causing dangerous smoke impacts for more than 320,000 people.

Coastal areas in Orange County will see highs in the low to mid 70s, paired with a cool sea breeze during the afternoons.