Extreme heat warning in place for Southern California from Tuesday to Thursday

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The NWS Los Angeles/Oxnard CA released an extreme heat warning at 8:38 a.m. on Monday valid from Tuesday 10 a.m. until Thursday 8 p.m. The warning is for Cuyama Valley, Santa Barbara County Interior Mountains, Interstate 5 Corridor, Western San Gabriel Mountains and Highway 14 Corridor and Eastern San Gabriel Mountains.

"Temperatures of 90 to 110 degrees, hottest on Wednesday and over interior areas," can be anticipated according to the NWS. "Humid conditions will add to the heat to potentially worsen heat impacts. Effects of the heat will build through the week, with warm overnight low temperatures providing little relief from the heat."

"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," explains the NWS.

This warning is in effect until Thursday at 8 p.m.

During heat waves, consider the following tips from the NWS

• Stay hydrated: Drink plenty of fluids.
• Seek shelter: Stay indoors in an air-conditioned room to keep cool.
• Check on others: Stay out of the sun, and make sure to check up on relatives and neighbors.
• Prioritize child and pet safety: Be vigilant about never leaving young children and pets in vehicles without supervision, especially during periods of intense heat, as car interiors can quickly become extremely hot.
• Be mindful outdoors: Take extra precautions when working or spending time outside.
• Time your activities wisely: When possible, reschedule strenuous activities to early morning or evening.
• Familiarize yourself with warning signs: Know the symptoms of heat exhaustion and heat stroke.
• Stay cool with clothing: Wear lightweight and loose-fitting clothing.

For a safer outdoor work environment, follow the Occupational Safety and Health Administration (OSHA)'s guidance by scheduling regular rest breaks in shaded or air-conditioned places. If anyone shows signs of heat illness, promptly move them to a cool, shaded area. In an emergency, call 911.

Source: The National Weather Service

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This story was originally published July 13, 2026 at 8:44 AM.