Major air pollutants have declined in recent decades, but USA TODAY’s analysis shows wildfire smoke is taking their place.

Winds have begun shifting to the east, which drove the Eaton fire toward Arcadia and Monrovia early Wednesday morning. Smoke ...

On Wednesday at 12:26 p.m. an air quality alert was issued valid until Friday at midnight. The alert is for San Bernardino ...

Air quality across parts of California is deteriorating to hazardous levels as strong winds drive rapid wildfire spread and ...

An Air Quality Alert has been issued for parts of the Inland Empire, as well as Los Angeles and Orange counties.

The wildfires burning across LA are also degrading the air quality across the region. The resulting air pollution is a ...

Smoke from multiple L.A. fires could reduce air quality across Southern California if wind direction shifts. SAN DIEGO COUNTY, Calif. — As multiple fires burn across Los Angeles County, meteorologists ...

Millions woke up to hazy skies and poor air quality Wednesday morning as crews continued to fight the Palisades Fire in western Los Angeles, the Eaton Fire near Altadena and the Hurst/Sylmar Fire ...

Wildfires are tearing through thousands of acres in Los Angeles County in California, as strong Santa Ana winds stoke the ...

An air quality alert was issued on Monday at 2:59 p.m. in effect until Wednesday at midnight. The alert is for San Bernardino ...

Orange County residents know the importance of maintaining a comfortable indoor environment throughout the year. With varying ...