It would take years for scientists to piece together the puzzle of this Los Angeles smog and decades to implement policies to improve the air we all breathe. Today, scientists are able to monitor the ...

Los Angeles has struggled with air pollution problems since before smog became a term. In 1943, smog covered the city so thickly that residents thought they were under a chemical attack.

OAKLAND, Calif.— Conservation and public-health groups sued Environmental Protection Agency Administrator Lee Zeldin today for his failure to take action to reduce smog pollution in the Phoenix metro ...

The data ranges from 2021 to 2023. According to the study, smog pollution levels in the Grand Rapids area are the 27th worst in the nation, though this year's levels were a slight improvement over ...

Baltimore County received an "F" for ozone smog, according to a 2025 report on air quality from the American Lung Association. The annual State of the Air report monitors smog levels and short ...