Heat Advisory

Full Alert Message

URGENT - WEATHER MESSAGE National Weather Service San Diego CA 208 PM PDT Mon Aug 24 2026 ...EXTREME HEAT WARNING REMAINS IN EFFECT FROM 10 AM TUESDAY TO 8 PM PDT FRIDAY... ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 AM PDT TUESDAY... * WHAT...For the Heat Advisory, temperatures up to 106. For the Extreme Heat Warning, dangerously hot conditions with temperatures up to 110 expected. * WHERE...San Bernardino and Riverside County Valleys-The Inland Empire County. * WHEN...For the Heat Advisory, until 10 AM PDT Tuesday. For the Extreme Heat Warning, from 10 AM Tuesday to 8 PM PDT Friday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. Hot temperatures may cause heat illnesses. * ADDITIONAL DETAILS...Low temperatures 5 to 10 degrees above normal will limit relief from the heat. Increasing temperatures into the middle of next week will increase the threat of heat-related illness across populations. 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.