Cities in California made up six of the 10 cities with the worst air quality, including the three worst. People of color were disproportionately exposed to air pollution: The report found 63% of ...

“Nothing says ‘green car company’ quite like being worse for air quality than every company in the state of California except ...

Warehouses in Southern California have been linked with increased pollution in a study that used NASA satellites to map toxic ...

Critics question why South Stockton should shoulder the burden of increased air pollution so that others in the state can ...

Unhealthy air quality has descended on parts of the Bay Area thanks to a combination of cold weather, dense fog and smoke.

Court upholds California’s authority to set nation ... has made great progress improving air quality in recent decades, air pollution is still a driver of many serious health conditions both ...

Gov. Gavin Newsom faces mounting pressure to declare a state of emergency over the Tijuana River pollution as officials seek ...

"California and the aviation industry are joining forces to tackle emissions head-on." Major US airlines finalize ...