July Fourth is one of the worst days of the year for air quality in the region, said Daniel B. Curtis, associate professor of ...

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Los Angeles County is the focus of an air quality alert reported at 1:58 p.m. on Wednesday by the National Weather Service.

On Wednesday at 2:12 p.m. an air quality alert was reported by the NWS San Diego CA in effect until Sunday at midnight. The ...

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Santa Ana Mountains/Foothills, Orange County Coast, Orange County, San Bernardino and Riverside County Valleys and San Gorgonio Pass Near Banning are under an air quality alert which was reported ...

At 1:58 p.m. on Wednesday, the NWS Los Angeles/Oxnard CA reported an air quality alert in effect until Saturday at 11 p.m.

Wisconsin Watch wants to hear from folks who experienced measles outbreaks before vaccines were widely available.

Microplastics and nanoplastics range from mountain peaks to brain cells, raising urgent questions regarding their impact on human health.

Parts of San Diego's skies are contaminated with harmful particles. The National Weather Service has issued an urgent alert, check if yours is on the list.