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

As the Green Fire continues to blaze, businesses around the lake are feeling the impact. However, Shasta Lake Caverns is not ...

Fourth of July fireworks could prompt hazardous air quality across parts of Southern California this weekend, authorities ...

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

A regional air quality alert was issued for much of Southern California as harmful levels of fine particle pollution spread ...

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

Faced with abandonment from the state, rural residents built their own fire lines, shelters, and support systems.

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

Americans in at least eight states face potentially unhealthy levels of air pollution on Wednesday, official data shows. The data is shown in a live map from AirNow—a partnership of multiple U.S.

Smoke often impacts the air quality during fire season, and we heard from the Shasta County air quality district manager ...