Severe · Extreme Heat WarningActive alert

Extreme Heat Warning issued September 9 at 2:25PM PDT until September 10

Affecting San Diego County Coastal Areas; Orange County Coastal

In effect until: Sep 10, 2026, 5:30 AM

San Diego County Coastal Areas; Orange County Coastal

Likely impact; effects through 5:30 AM.

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

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Read the original bulletin (official text)

* WHAT...For the Extreme Heat Warning, dangerously hot conditions
with high temperatures in the 80s at the beaches to the mid to
upper 90s along higher coastal terrain on Thursday with morning low
temperatures in the lower to mid 70s.

* WHERE...Orange County Coastal Areas and San Diego County Coastal
Areas.

* WHEN...Until 8 PM PDT Thursday.

* IMPACTS...Heat related illnesses increase significantly during
extreme heat events.

* ADDITIONAL DETAILS...Major to Extreme HeatRisk through today.
Moderate to Major HeatRisk on Thursday. Warm overnight low
temperature will limit relief from the heat.

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Alert data: U.S. National Weather Service / NOAA · Translation: WeatherTranslate™

Extreme Heat Warning issued September 9 at 2:25PM PDT until September 10

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