Severe · Extreme Heat WarningActive alert

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

Affecting Orange County Inland

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

Orange County Inland

Likely impact; effects through 5:30 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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Read the original bulletin (official text)

* WHAT...For the Extreme Heat Warning, dangerously hot conditions
with high temperatures of 90 to 100 on Thursday. Morning low
temperatures in the 70s expected.

* WHERE...Orange County Inland Areas.

* WHEN...Until 8 PM PDT Thursday.

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

* ADDITIONAL DETAILS...Major HeatRisk through today. Moderate to
major HeatRisk on Thursday. Warm overnight temperatures 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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