Wildfires are increasingly evolving into urban conflagrations. These are large-scale, destructive wildfires that converge into urban areas and spread from building to building.

Researchers are concerned that wildfires raging in California are creating a mix of toxic metals and making the air we ...

The wildfire evacuation zone for the Orleans Complex was expanded Tuesday to include the community of Forks of Salmon.

PM2.5 pollution is spiking in many counties in Utah and is accompanied by the typical summer pollutant of ozone. It makes for ...

The Green Fire, burning near Shasta Lake, is now California’s third-biggest wildfire of the year, the Department of Forestry ...

Partial blue skies in the morning allowed many park visitors to ignore fires on the North Rim. By afternoon, ashfall made for ...

Two large wildfires in Northern California, one near Shasta Lake, continue to burn amid extremely hot weather, sending smoke ...

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

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

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

Smoke from wildfires burning in the northern Sacramento Valley may bring hazy skies and unhealthy air to parts of the Bay ...

California’s largest wildfire of the year grew to an estimated 70,801 acres Friday, producing smoke that has affected millions of residents across the southern part of the state. The Madre Fire ...