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Severe · Extreme Heat WarningActive alert

Extreme Heat Warning issued September 9 at 8:09AM PDT until September 10

Affecting Cuyama Valley; Santa Clarita Valley; San Luis Obispo County Beaches; San Luis Obispo County Inland Central Coast; Santa Lucia Mountains; Southern Salinas Valley; San Luis Obispo County Interior Valleys; San Luis Obispo County Mountains; Santa Barbara County Central Coast Beaches; Santa Barbara County Inland Central Coast; Santa Ynez Valley; Santa Barbara County Southwestern Coast; Santa Barbara County Southeastern Coast; Santa Ynez Mountains Western Range; Santa Ynez Mountains Eastern Range; Santa Barbara County Interior Mountains; Ventura County Beaches; Ventura County Inland Coast; Lake Casitas; Ojai Valley; Central Ventura County Valleys; Southeastern Ventura County Valleys; Santa Susana Mountains

In effect until: Sep 11, 2026, 3:00 AM

Cuyama Valley; Santa Clarita Valley; San Luis Obispo County Beaches; San Luis Obispo County Inland Central Coast; Santa Lucia Mountains; Southern Salinas Valley; San Luis Obispo County Interior Valleys; San Luis Obispo County Mountains; Santa Barbara County Central Coast Beaches; Santa Barbara County Inland Central Coast; Santa Ynez Valley; Santa Barbara County Southwestern Coast; Santa Barbara County Southeastern Coast; Santa Ynez Mountains Western Range; Santa Ynez Mountains Eastern Range; Santa Barbara County Interior Mountains; Ventura County Beaches; Ventura County Inland Coast; Lake Casitas; Ojai Valley; Central Ventura County Valleys; Southeastern Ventura County Valleys; Santa Susana Mountains

Likely impact; effects through 3:00 AM.

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

See it on the live mapView official source
Read the original bulletin (official text)
* WHAT...Temperatures of 88 to 108 expected.

* WHERE...A portion of southwest California.

* WHEN...Until 8 PM PDT Thursday.

* IMPACTS...Heat related illnesses increase significantly during
extreme heat events. Hot temperatures may cause heat illnesses.

* ADDITIONAL DETAILS...Humid conditions will add to heat discomfort.
Heat peaking today for most areas.
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Alert data: U.S. National Weather Service / NOAA · Translation: WeatherTranslate™