5 Freeway north of LA is the focus of an air quality alert reported at 2:49 p.m. on Thursday by the National Weather Service. The alert is in effect until Friday Aug. 8, at 7 p.m. The NWS Los ...

The state Department of Environmental Conservation has issued an air quality alert for Wednesday due to high levels of ozone. The alert will be in effect from 11 a.m. to 11 p.m.

SACRAMENTO, California, December 9, 2008 (ENS) - The California Air Resources Board has issued a consumer alert, advising holiday shoppers not to purchase air purifiers or air cleaning devices that ...

5 Freeway north of LA is the focus of an air quality alert reported at 2:31 p.m. on Monday by the National Weather Service. The alert is in effect until Thursday July 10, at 8:15 p.m. The NWS Los ...