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

Fireworks filled the night sky this weekend and while they are a symbol of celebration. Some are worried that they may be increasing the air pollution.

Los Angeles County is included in an air quality alert reported by the National Weather Service on Monday at 2:31 p.m. The ...

The Fourth of July fireworks and wildfires have caused poor air quality in Fresno County, with some areas reaching a level 5, ...

On Monday at 3:58 p.m. the NWS San Diego CA reported an air quality alert in effect until Thursday at 8 p.m. The alert is for ...

This story was originally published by CalMatters. Sign up for their newsletters. Guest Commentary written by Yasmina Valdivia Yasmina Valdivia is an activist and longtime resident of Val Verde, a ...

With 7 of its ambitious rules for cars, trucks and trains repealed, California officials must find new ways to clean up the nation’s worst air pollution. But officials face growing pushback about ...

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

“This research shows that people with COPD seem to gather a lot more carbon in their lung cells. These cells also look and ...

A regional air quality alert was issued for much of Southern California as harmful levels of fine particle pollution spread ...