Severe · Extreme Heat WarningActive alert

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

Affecting San Diego County Inland Valleys

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

San Diego County Inland Valleys

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 high temperatures in the
upper 90s to 103 and warm nights with low temperatures in the lower
to mid 70s expected.

* WHERE...San Diego County Valleys.

* 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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