Smoke travels hundreds of miles to harm air quality far from the fire, according to the EPA’s Wildfire Smoke and Your Patient ...

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

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

The current infrastructure also isn’t set up to fully account for the shifting behavior of wildfire smoke, which can travel ...

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

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

Analysis shows EPA rollbacks of the HON rule would put overburdened communities at risk and benefit chemical plants that ...

Residents are encouraged to limit outdoor activities, stay indoors with windows and doors closed, and use air conditioners ...

Recent wildfires in the Northstate, particularly the Green Fire burning in the Montgomery Creek mountainous area of Shasta ...

Portland Cruise Control said it proposed a ban on scrubber wash discharge in Portland Harbor. It's the wastewater produced when cruise ships clean their exhaust systems. The group explained discharge ...

A damaged pipe just north of the lake leaked 2,600 barrels of crude oil in early May, according to a report by the ...

Millions of people in California have been urged to avoid grilling on Wednesday amid concerns over high air pollution levels.