Extreme Heat Warning

Full Alert Message

URGENT - WEATHER MESSAGE National Weather Service San Diego CA 303 PM PDT Tue Jul 28 2026 ...EXTREME HEAT WARNING REMAINS IN EFFECT FROM 10 AM FRIDAY TO 8 PM PDT SUNDAY... * WHAT...Dangerously hot conditions with high temperatures in the mid 90s in the western valleys to around 105 near the foothills expected. * WHERE...San Diego County Valleys. * WHEN...From 10 AM Friday 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.