California's most significant heat wave of summer peaked in most of the Bay Area on Thursday and a cooldown will begin Friday, but not everywhere, and not all at once. Inland valleys and deserts will ...

The second heat wave of 2025 for Northern California could bring record-breaking temperatures throughout the four-day stretch of triple digits. While people who've lived in the region for years are no ...

LOS ANGELES -- Dry vegetation fueled three wildfires near Los Angeles amid warnings Friday that the risk of new blazes erupting was high as temperatures spike and humidity levels drop during a ...

A statewide Flex Alert will be in effect Monday, July 12, California ISO announced Sunday. This means residents are asked to conserve as much electricity as possible from 4 p.m. to 9 p.m. due to ...

A year since California established heat rules for indoor workplaces, labor organizers say employees are still being exposed to dangerously high temperatures on the job. According to survey data ...

Temperatures remained high across Southern California on Thursday, Aug. 21, with extreme heat warnings and advisories in place across the region. The peak of the heat wave is expected Thursday and ...

The oppressive heat wave broiling California and much of the West will continue to bring dangerously hot temperatures — and likely more record-breakers — for even longer than forecasters first ...

Biologists thought that marine heat waves lowered urchin reproduction only at lethal temperatures. A new study shows ...