8/12/2025 3:51:00 AM until 8/12/2025 9:00:00 PM

Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1.

* WHAT...Daytime high temperatures in the 80s and 90s at high elevation to the mid 90s to near 105 degrees in the foothills and high valleys. Overnight low temperatures will be in the 70s to low 80s. * WHERE...Cuyama Valley, Eastern San Gabriel Mountains, Interstate 5 Corridor, Northern Ventura County Mountains, Santa Barbara County Interior Mountains, Santa Ynez Mountains Eastern Range, Santa Ynez Mountains Western Range, Southern Ventura County Mountains, and Western San Gabriel Mountains and Highway 14 Corridor. * WHEN...Until 9 PM PDT this evening. * IMPACTS...There is a high risk for heat illness for sensitive populations including the very young, the very old, those without air conditioning, and those active outdoors.