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

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 ...

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

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

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

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.

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

Seven people are unaccounted for after multiple explosions obliterated a fireworks facility Tuesday in northern California, ...