Severe · Extreme Heat WarningActive alert

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

Affecting San Bernardino and Riverside County Valleys-The Inland Empire

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

San Bernardino and Riverside County Valleys-The Inland Empire

Likely impact; effects through 3:00 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 high temperatures in the
upper 90s to 108 expected.

* WHERE...San Bernardino and Riverside County Valleys-The Inland
Empire.

* 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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