Extreme Heat Warning

Full Alert Message

URGENT - WEATHER MESSAGE National Weather Service San Diego CA 544 AM PDT Sat Aug 1 2026 ...EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM PDT SUNDAY... * WHAT...Dangerously hot conditions with high temperatures in the mid 90s in the western valleys to low 100s near the foothills expected. * WHERE...San Diego County Valleys. * WHEN...Until 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.