A triple-digit heat wave arrives in Southern California on Wednesday, affecting inland communities, increasing health ...

Big changes [are] coming ... as high pressure over Arizona expands west into Southern California,' the weather service warns.

With another summer heatwave in the forecast, many Southern California residents will be looking for ways to cool off and beat the intense heat. In addition to the beaches, the county has many ...

A study released by UCLA on Monday suggests that the world's heat waves are not only increasing in frequency but getting ...

UCLA researchers have released an alarming new finding — the duration of heat waves is increasing faster than global warming ...

‘Mini heat wave’ descends on Southern California Katie Torres cool off her son Augustine Torres in the splash pool at La Pintoresca Park in Pasadena on Wednesday, July 9, 2025.

Southern California was feeling the effects of a mini heat wave, with temperatures expected to climb about 5 to 10 degrees above area norms Wednesday and Thursday.

A moderately strong heat wave is taking shape inland, but its reach will be uneven and the coast may barely feel it at all.