Severe · Extreme Heat WarningActive alert

Extreme Heat Warning issued September 10 at 4:00AM PDT until September 10

Affecting Santa Ana Mountains and Foothills

In effect until: Sep 11, 2026, 3:00 AM

Santa Ana Mountains and Foothills

Likely impact; effects through 3:00 AM.

Stay in air conditioning if possible. Drink water regularly and check on elderly neighbors.

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* WHAT...Dangerously hot conditions with temperatures up to 100
expected.

* WHERE...Santa Ana Mountains and Foothills.

* WHEN...Until 8 PM PDT this evening.

* 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 September 10 at 4:00AM PDT until September 10

Get the next alert for your area before it matters.

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