Growth of the Madre Fire burning off Highway 166 expanded overnight, now having scorched 70,801 acres by Friday morning.

More than 600 firefighters are now involved in trying to control a California wildfire that broke out Wednesday afternoon. It ...

Smoke from the Madre Fire in San Luis Obispo County could potentially bring poor air quality to the High Desert over the July ...

California’s largest wildfire of the year grew to an estimated 70,801 acres Friday, producing smoke that has affected ...

[Update: Thu., July 3, 5:36pm] The Madre Fire has expanded to 52,593 acres as of 5:17 p.m. on Thursday, still with only 5 ...

Air quality is uniquely terrible after all those official and illegal fireworks are detonated to celebrate Independence Day.

The Madre fire burning in San Luis Obispo County has grown to become the largest wildfire California has seen this year. It ...

Fireworks are happening across the city again this year, which poses two issues–highly concentrated pollution, and uniquely ...

As San Luis County's Madre Fire rips through California, air quality warnings are now being issued for nearby areas, ...

Smoke from the Madre Fire, which started Wednesday off Highway 166, is impacting the air quality for some communities on the ...

Poor air quality caused by ozone and other sources prompted the warnings across six states on Thursday and Friday.

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 ...