Poor air quality caused by ozone and other sources prompted the warnings across six states on Thursday and Friday.

Los Angeles County is included in an air quality alert reported by the National Weather Service on Thursday at 2:43 p.m. The alert is in effect until Saturday July 5, at 11 p.m.

Smoke from the Madre Fire, which started Wednesday off Highway 166, is impacting the air quality for some communities on the ...

To reduce air and noise pollution in the city of Santa Cruz, an ordinance prohibiting the use of gas-powered landscaping ...

Now that the Central Coast area has entered peak wildfire season, the Santa Barbara, San Luis Obispo, and Ventura counties Air Pollution Control districts ...