Severe · Extreme Heat WarningActive alert
Extreme Heat Warning issued October 3 at 9:40PM PDT until October 8
Affecting San Diego County Coastal Areas
In effect until: Oct 4, 2026, 1:15 PM
San Diego County Coastal Areas
Likely impact; effects through 1:15 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.
Read the original bulletin (official text)
* WHAT...Dangerously hot conditions with high temperatures ranging from the mid 80s to mid 90s at the beaches to the mid 90s to low 100s for the mesas. Nights will be very warm with low temperatures mostly in the 70s. * WHERE...San Diego County Coastal Areas. * 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™