Multiple lightning-sparked wildfires burning in remote parts of Northern California have slowly grown in size and are now thousands of acres.

Los Angeles and much of Southern California were met with a regional air quality alert on Saturday, following July 4th ...

With 7 of its ambitious rules for cars, trucks and trains repealed, California officials must find new ways to clean up the ...

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

Southern California braced for critical fire weather and heat-related illnesses as several parts of the region are expected to approach or reach triple-digit heat. Above-normal temperatures are ...

The Madre Fire, now the largest wildfire in California this year, expanded to 79,630 acres by Saturday, July 5, prompting ...

On Wednesday at 2:12 p.m. an air quality alert was reported by the NWS San Diego CA in effect until Sunday at midnight. The ...

An air quality alert was reported by the NWS San Diego CA on Thursday at 2:47 p.m. in effect until Saturday at midnight. The ...

A fleet of air quality monitoring vehicles took to the streets of California yesterday, marking the start of a year long ...

In Southern California, large warehouses must take steps to reduce the pollution caused by truck visits, either by switching ...