Heat Advisory

Locations Affected

Irvine, CA ∙ Santa Ana, CA ∙ San Diego, CA ∙ Riverside, CA ∙ Chula Vista, CA ∙ San Bernardino, CA ∙ Anaheim, CA ∙ Escondido, CA ∙ Rancho Cucamonga, CA ∙ Huntington Beach, CA

Full Alert Message

URGENT - WEATHER MESSAGE National Weather Service San Diego CA 539 AM PDT Thu Mar 12 2026 ...HEAT ADVISORY REMAINS IN EFFECT FROM 10 AM THIS MORNING TO 8 PM PDT FRIDAY... * WHAT...High temperatures from the lower to mid 80s near the coast and lower to mid 90s for the valleys and inland Orange County expected. * WHERE...Orange County Coastal Areas, Orange County Inland Areas, San Bernardino and Riverside County Valleys-The Inland Empire, San Diego County Coastal Areas, and San Diego County Valleys. * WHEN...From 10 AM this morning to 8 PM PDT Friday. * IMPACTS...Hot temperatures may cause heat illnesses. 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. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke.

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