Severe · Extreme Heat WarningActive alert

Extreme Heat Warning issued October 3 at 6:05PM PDT until October 8

Affecting Santa Ana Mountains and Foothills

In effect until: Oct 4, 2026, 9:15 AM

Santa Ana Mountains and Foothills

Likely impact; effects through 9:15 AM.

Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Do not leave young children and pets in unattended vehicles. Car interiors will reach lethal temperatures in a matter of minutes.

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* WHAT...Dangerously hot conditions with temperatures up to 102
expected.

* WHERE...Santa Ana Mountains and Foothills.

* WHEN...Until 8 PM PDT Thursday.

* IMPACTS...Heat related illnesses increase significantly during
extreme heat events.

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Alert data: U.S. National Weather Service / NOAA · Translation: WeatherTranslate™

Extreme Heat Warning issued October 3 at 6:05PM PDT until October 8

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