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

Nevertheless, it still received “F” grades for ozone and two types of particle pollution. Los Angeles County registered 109 unhealthy ozone days, down from 159 in 2005; while Riverside County ...

Los Angeles, Orange, San Bernardino, Riverside and Ventura counties all received F grades for particle and ozone pollution. 24/7 Live Los Angeles Orange County Inland Empire Ventura County ...

The Los Angeles-Long Beach metropolitan area had the worst ozone pollution in the nation between 2015 and 2017, and also ranked among the worst in terms of particle pollution, or soot, according ...

Millions of people in California have been urged to avoid grilling on Wednesday amid concerns over high air pollution levels.

Los Angeles-Long Beach area topped list in 23 of 24 years that Lung Association has ranked cities. But it improved slightly in unhealthy ozone days, particle pollution days.

LOS ANGELES (CBSLA) – It's not a distinction to take pride in: Los Angeles continues to have the worst ozone pollution of any metropolitan area in the United States. A new annual report released ...

LOS ANGELES (CBSLA.com) — Findings of a study released Wednesday showed the Los Angeles-Long Beach metropolitan area continues to have the worst ozone pollution in the nation. According to the ...

Los Angeles ranked the highest for levels of deaths estimated to be caused by PM2.5 and ozone in 2017, followed by Riverside-San Bernardino-Ontario, CA; Bakersfield, CA; Pittsburgh, PA; and Fresno ...

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

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 ...