Severe · Extreme Heat WarningActive alert

Extreme Heat Warning issued October 1 at 12:29AM PDT until October 8

Affecting San Bernardino and Riverside County Valleys-The Inland Empire

In effect until: Oct 1, 2026, 10:30 PM

San Bernardino and Riverside County Valleys-The Inland Empire

Likely impact; effects through 10:30 PM.

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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Read the original bulletin (official text)

* WHAT...Dangerously hot conditions with high temperatures in the
upper 90s to 106 expected. Nights will be very warm with low
temperatures mostly in the mid 60s to lower 70s.

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

* WHEN...From 10 AM Friday to 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 1 at 12:29AM PDT until October 8

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