Air pollution while running can be dangerous, whether you're breathing in car exhaust or wildfire smoke. Here's how to stay safe.

With levels of sooty air pollution far too high across swaths of the Los Angeles area, Dana Benton is sleeping with a mask on, even with her air purifier running. “My car was just covered in ash, and ...

As multiple wildfires continue to burn across Los Angeles, millions of people are being exposed to hazardous levels of air pollution ... next best thing is a face mask or respirator to help ...

Arizona is the only state with 'unhealthy' air quality. Part of it stems from our geography, but part also comes from our ...