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.

Local health officials are warning beachgoers to refrain from swimming, surfing, or playing in the ocean at several popular Los Angeles County beaches after recent tests revealed elevated levels ...

An air quality advisory is in effect for the Bay Area on Friday, as smoke from wildfires burning in far Northern California ...