Extreme heat warning affecting Los Angeles County from Tuesday to Thursday

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The NWS Los Angeles/Oxnard CA issued 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 Santa Clarita Valley, Los Angeles, Western San Fernando Valley, Eastern San Fernando Valley and Santa Susana Mountains.

"Temperatures of 90 to 110 degrees, hottest on Wednesday and over interior areas," can be expected 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," adds 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: Make sure to drink plenty of fluids.
• Seek shelter: Stay indoors in an air-conditioned room to keep cool.
• Stay out of the sun, and check up on relatives and neighbors.
• Child and pet welfare: Never forget to safeguard young children and pets by not leaving them unattended in vehicles, especially during scorching weather when car interiors can become life-threateningly hot.
• Exercise caution outdoors: If you work or spend time outside, take additional safety measures.
• Time your activities wisely: If possible, reschedule strenuous activities to early morning or evening when the heat is less intense.
• Familiarize yourself with warning signs: Know the symptoms of heat exhaustion and heat stroke.
• Dress appropriately: Wear lightweight, loose-fitting clothing to stay comfortable.

To ensure safety during outdoor work, adhere to the Occupational Safety and Health Administration (OSHA)'s recommendations by incorporating regular rest breaks in shaded or air-conditioned environments. If someone is affected by heat, immediately transfer them to a cool and 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.