Cal Fire's new maps for Southern California added 3.5 million acres into fire-hazard zones, increasing the acreage in the ...

This interactive map gives you up-to-the-minute air quality updates and health recommendations for communities across Los Angeles ... and heat can trap smog and worsen conditions.

It would take years for scientists to piece together the puzzle of this Los Angeles smog and decades to implement policies to improve the air we all breathe. Today, scientists are able to monitor the ...