Reno and other Nevada cities ranked worse than Los Angeles for air pollution, according to the American Lung Association’s ...

The iconic skyline of downtown Los Angeles has ... The “State of the Air” report from the association has been handing out grades to American cities based on their air quality for the past ...

It looks at data from air quality monitors to tell which cities are the cleanest and most polluted for ozone and short-term ...

Wildfires in recent years, most notably in Los Angeles and Canada, have caused air quality concerns across the country, especially in Pennsylvania. Those who may fall under that category are ...

A new analysis has revealed that Chicago's air quality is among the worst in the ... cities among the 25 most polluted ones in 2025. Los Angeles is ranked first for the most polluted by ozone.

“The addition of this critical aircraft to the state’s wildfire suppression arsenal will save lives and property, and improve air quality ... following recent Los Angeles County wildfires.

Apr. 21, 2025 — Across the United States, 58% of counties have no active air-quality monitoring sites, according to a new study. Rural counties, especially those in the Midwest and South, are ...

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Los Angeles, meanwhile, is still the city with the worst ozone pollution in the nation, as it has been in 25 of the 26 years of American Lung Association Reporting. Breathing in polluted air ...

The latest forecast and air quality conditions for the greater Los Angeles area, including beaches, valleys and desert regions.