Millions of people in California have been urged to avoid grilling on Wednesday amid concerns over high air pollution levels.

Ozone pollution is invisible,” says Kai Chen, PhD, co-faculty director of the Yale Center on Climate Change and Health, and that’s exactly why it is so dangerous. On July 9, air quality alerts ...

DIAMOND BAR, Calif. - Right now Riverside County is under an Air Quality Alert which will remain in effect through Thursday this week. This is due to harmful levels of ozone pollution, which officials ...

The South Bay community remains concerned about air quality, drinking water and health outcomes related to the Tijuana River pollution crisis, according to a survey released Tuesday.

California air quality regulators are failing to address landfill pollution, putting communities at risk of toxic exposure and health issues.

So happy smogiversary, Los Angeles. We can breathe a lot easier than we used to, but don't let that fool you — we still have the worst air quality in America — a distinction the American Lung ...

Gas-powered cars and diesel trucks remain the state’s largest sources of smog and soot despite decades of cutting emissions.

Big changes [are] coming ... as high pressure over Arizona expands west into Southern California,' the weather service warns.

Recent wildfires in the Northstate, particularly the Green Fire burning in the Montgomery Creek mountainous area of Shasta ...

Get ready for some summer sizzle — temperatures are on the rise across the Coachella Valley and the entire Southwest this ...