Temperatures soared into triple digits or high 90s for the second consecutive day in many areas.
While some people used umbrellas, others used sunscreen to protect themselves from the sun's rays. But despite the heat, joggers and cyclists were out getting their exercise.
Occupy Los Angeles activists remained camped out in the heat in downtown L.A. They have been perched on the front steps of City Hall for about two weeks.
They continued to brave the extreme heat, making a stand against what they call is corporate greed in the U.S.
"Staying hydrated is huge to talk about all the time," said Occupy L.A. activist Paul Leal. "We have a lot of donations coming in specifically for water. Go to the food tank, grab a bottle of water, stay hydrated. No one has gotten even close to dehydration and that's awesome."
In the Inland Empire, many residents went out to Lake Elsinore to try and get some relief out on the water.
What a difference from last week, when a storm rolled in and brought rainfall all across Southern California.
But a cooling trend is expected over the next few days as the high pressure weakens and moves to the east. That should bring a return of overnight low clouds and fog.
Forecasters say Friday's highs should be at least 10 degrees cooler.