When air quality is ranked "unhealthy for vulnerable groups" it means PM 2.5 are at levels that can cause problems for people ...

An air quality advisory is in effect for the Bay Area on Friday, as smoke from wildfires burning in far Northern California ...

Air quality is unhealthier-than-average for some people Thursday as winds are blowing wildfire smoke across the Northern ...

SAN FRANCISCO — The Bay Area Air District on Thursday issued an air quality advisory due to smoke from wildfires burning in ...

Prepare for soaring temperatures near 100° and smoky air. Avoid the outdoors during peak heat hours for better air quality ...

Wildfires are burning in Northern California and Southern Oregon. A Spare The Air Alert day is in effect Friday due to poor ...

Smoke from wildfires in Northern California and southern Oregon has settled over Northern Nevada and is worsening air quality across the region. Air quality in the Reno-Sparks area Thursday morning ...

At the outset of the blaze, the San Luis Obispo Sheriff's Office estimated that some 500 acres were already burned at the scene, near the 10000 block of Highway 166 in the Los Padres National Forest.

Firefighters are working the uncontained Green Fire in the Shasta-Trinity forest as 110-degree heatwave hits the Redding area. Here's what we know.

California's Madre Fire sparked in the late evening of July 3 but has since grown to the largest in the state this year by ...

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

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