Los Angeles County is the focus of an updated air quality alert reported at 5:03 p.m. on Wednesday by the National Weather ...

Freeway north of LA is the focus of an updated air quality alert reported at 5:03 p.m. on Wednesday by the National Weather ...

Los Angeles braces for a hot day with an Air Quality Alert due to high ozone levels, affecting sensitive groups and advising precautions like staying indoors and limiting outdoor activities.

Despite decades of progress in reducing air pollution, Los Angeles is still the nation's smoggiest city, according to a report released Wednesday by the American Lung Assn.

Los Angeles-Long Beach was found to have the worst ozone, or smog, pollution in the country. Five areas of California were listed among the top 10 most polluted areas, with Visalia placing second ...

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. The ...

Almost half of everyone who lives in the United States breathes unhealthy levels of air pollution, according to the American Lung Association’s annual State of the Air report.

On Wednesday at 5:03 p.m. the NWS Los Angeles/Oxnard CA reported an updated air quality alert in effect until Thursday at ...

Freeway north of LA is the focus of an air quality alert reported at 2:31 p.m. on Monday by the National Weather Service. The ...

LOS ANGELES — Despite decades of progress in reducing air pollution, Los Angeles is still the nation’s smoggiest city, according to a report released Wednesday by the American Lung Assn.

An air quality alert was reported by the NWS Los Angeles/Oxnard CA on Monday at 2:31 p.m. in effect until Thursday at 8:15 ...