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

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

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

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

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

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

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

The future of environmental protection in America is changing, with states taking over responsibilities previously handled by ...

Central Arkansas has been placed under an Ozone Action Advisory, which is now classified as "Code Orange".Determined color ...

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

The Environmental Protection Agency on Thursday put on administrative leave 139 employees who signed a “declaration of ...

Environmental sensors provide crucial data for understanding our surroundings. For example, air quality maps based on sensor readings help users make decisions to mitigate the effects of pollution on ...