Heat Advisory

Full Alert Message

URGENT - WEATHER MESSAGE National Weather Service San Diego CA 1224 AM PDT Tue Aug 4 2026 ...HEAT ADVISORY IN EFFECT FROM 10 AM THIS MORNING TO 8 PM PDT SATURDAY... * WHAT...High temperatures mostly in the mid 80s to upper 90s below 6500 feet expected. * WHERE...Riverside County Mountains. * WHEN...From 10 AM this morning to 8 PM PDT Saturday. * 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.