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 ...

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 ...

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 ...

With respect to ozone pollution, "Los Angeles remains at the top of this list, as it has for all but one of the 19 reports. Los Angeles also recorded more unhealthy air days in this report, ...

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 p.m. The alert is for Calabasas and Agoura Hills, Eastern San Fernando Valley ...

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

Los Angeles County is included in an air quality alert reported by the National Weather Service on Monday at 2:31 p.m. The alert is in effect until Thursday July 10, at 8:15 p.m.

Los Angeles County is included in an air quality alert reported by the National Weather Service on Monday at 2:31 p.m. The alert is in effect until Thursday July 10, at 8:15 p.m. The NWS Los ...