Extreme Heat Watch

Locations Affected

Anaheim, CA ∙ Irvine, CA ∙ Santa Ana, CA ∙ San Bernardino, CA ∙ Riverside, CA ∙ Chula Vista, CA ∙ San Diego, CA ∙ Corona, CA ∙ Garden Grove, CA ∙ Ontario, CA

Full Alert Message

URGENT - WEATHER MESSAGE National Weather Service San Diego CA 316 AM PDT Mon Jul 13 2026 ...EXTREME HEAT WATCH REMAINS IN EFFECT FROM TUESDAY MORNING THROUGH THURSDAY EVENING... * WHAT...Hot and humid conditions with elevated overnight temperatures. Temperatures will be in the 90s in the mountains below 6000 feet, 95 to 107 or more for inland valleys, and 80s near the coast. * WHERE...Orange County Coastal Areas, Orange County Inland Areas, Riverside County Mountains, San Bernardino County Mountains, San Bernardino and Riverside County Valleys-The Inland Empire, San Diego County Coastal Areas, San Diego County Mountains, San Diego County Valleys, San Gorgonio Pass near Banning, and Santa Ana Mountains and Foothills. * WHEN...From Tuesday morning through Thursday evening. * 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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