California Regions Under Extreme Heat Warning and Advisories

An Extreme Heat Warning is active for Southern California, including Riverside County, until October 8, with temperatures expected to reach 90s to 103°F (37-39°C). Heat Advisories cover Central and Northern California, where temperatures are 15-20°F (8-11°C) above normal. The Weather Prediction Center anticipates October 3rd will be the hottest day, with some valleys potentially hitting 107°F (42°C), posing significant health risks.