Extreme Heat Warning

Locations Affected

Anaheim, CA ∙ Riverside, CA ∙ Santa Ana, CA ∙ Irvine, CA ∙ San Bernardino, CA ∙ Corona, CA ∙ Rancho Cucamonga, CA ∙ Orange, CA ∙ Fullerton, CA ∙ Fontana, CA

Full Alert Message

URGENT - WEATHER MESSAGE National Weather Service San Diego CA 204 AM PDT Fri Jul 31 2026 ...EXTREME HEAT WARNING REMAINS IN EFFECT FROM 10 AM THIS MORNING TO 8 PM PDT SUNDAY... * WHAT...Dangerously hot conditions with high temperatures in the 90s east of Interstate 5 expected. * WHERE...Orange County Inland Areas. * WHEN...From 10 AM this morning to 8 PM PDT Sunday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.

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