Severe · Extreme Heat WarningActive alert

Extreme Heat Warning issued September 9 at 2:25PM PDT until September 10

Affecting Santa Ana Mountains and Foothills

In effect until: Sep 10, 2026, 5:30 AM

Santa Ana Mountains and Foothills

Likely impact; effects through 5:30 AM.

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

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Read the original bulletin (official text)

* WHAT...For the Extreme Heat Warning, dangerously hot conditions
with high temperatures in the 90s to near 100 on Thursday with
morning low temperatures in the 70s expected.

* WHERE...Santa Ana Mountains and Foothills.

* WHEN...Until 8 PM PDT Thursday.

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

* ADDITIONAL DETAILS...Areas of Major HeatRisk. Very warm overnight
temperatures will limit relief from the heat.

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

Extreme Heat Warning issued September 9 at 2:25PM PDT until September 10

Get the next alert for your area before it matters.

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