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Severe · Extreme Heat WarningActive alert

Extreme Heat Warning issued October 2 at 12:25PM PDT until October 8

Affecting San Diego County Inland Valleys

In effect until: Oct 3, 2026, 5:15 AM

San Diego County Inland Valleys

Likely impact; effects through 5:15 AM.

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

Read the original bulletin (official text)
* WHAT...For the Extreme Heat Warning, dangerously hot conditions
with high temperatures in the upper 90s to 105 with very warm
nights with low temperatures in the lower to mid 70s expected. For
the Wind Advisory, east winds 25 to 35 mph with gusts to 50 mph
expected.

* WHERE...San Diego County Valleys.

* WHEN...For the Extreme Heat Warning, until 8 PM PDT Thursday. For
the Wind Advisory, from 6 AM to 6 PM PDT Saturday.

* IMPACTS...Gusty winds will blow around unsecured objects. Tree
limbs could be blown down and a few power outages may result. Heat
related illnesses increase significantly during extreme heat
events.
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Alert data: U.S. National Weather Service / NOAA · Translation: WeatherTranslate™