The LA area is once again the worst for ozone in the U.S., a pollutant impacting millions more people nationwide, the ...

An annual report from the American Lung Assn. showed that Los Angeles has improved its air quality but still deserves its ...

The American Lung Association’s report ranks the Atlanta metro area as the third-worst in the Southeast for ozone pollution.

Various popular weather apps across Chicago showed that the air was unsafe to breathe early Wednesday morning, prompting ...

The air agency doesn’t plan to monitor the air or take any immediate steps to protect schools and households from the gas, ...

The iconic skyline of downtown Los Angeles has been clouded by smog for decades, so this title should come as no surprise to Angelenos. Yet again, L.A. is the smoggiest city in the U.S., according ...

Five facilities near schools and houses in LA County fumigate produce shipped from overseas with methyl bromide. But the air ...

The project on four lots will not only replace long-standing blight with majestic trees, but could also improve air quality and help ... about 150 miles north of Los Angeles.

Visalia is once again the worst for ozone in the U.S., a pollutant impacting millions more people nationwide, the American ...

Los Angeles is the smoggiest U.S. city for the 25th time in 26 years, despite reducing unhealthy ozone days by 40% since 2000 ...