Extreme Heat Watch

Full Alert Message

URGENT - WEATHER MESSAGE National Weather Service Los Angeles/Oxnard CA 1046 AM PDT Thu Jun 18 2026 ...EXTREME HEAT WATCH REMAINS IN EFFECT FROM TUESDAY MORNING THROUGH THURSDAY EVENING... * WHAT...Dangerously hot conditions with temperatures up to 100 possible. Hottest Wednesday and Thursday. * WHERE...Eastern San Fernando Valley, Eastern San Gabriel Mountains, Los Angeles County San Gabriel Valley, Santa Clarita Valley, Western San Fernando Valley, and Western San Gabriel Mountains and Highway 14 Corridor. * WHEN...From Tuesday morning through Thursday evening. * IMPACTS...There is a high risk for dangerous heat illness for anyone, especially for the very young, the very old, those without air conditioning, and those active outdoors. * ADDITIONAL DETAILS...Temperatures are expected to cool slightly after Thursday but will remain well above normal through next weekend. 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.