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The NWS Los Angeles/Oxnard CA released an updated heat advisory at 12:06 a.m. on Sunday valid from 10 a.m. until Tuesday 10 a.m. The advisory is for Santa Clarita Valley, Santa Ynez Mountains Western Range, Santa Ynez Mountains Eastern Range, Santa Barbara County Interior Mountains, Lake Casitas, Ojai Valley, Central Ventura County Valleys, Western Santa Monica Mountains Recreational area, Eastern Santa Monica Mountains Recreational area, Calabasas and Agoura Hills, Western San Fernando Valley, Eastern San Fernando Valley, Southeastern Ventura County Valleys, Santa Susana Mountains, Southern Ventura County Mountains, Interstate 5 Corridor, Western San Gabriel Mountains and Highway 14 Corridor, Eastern San Gabriel Mountains and Los Angeles.
The NWS informs, “Temperatures up to 107 degrees expected.”
“Heat related illnesses increase significantly during extreme heat events,” explains the NWS.
This advisory is in effect until Tuesday at 10 a.m.
NWS Heat Wave Safety Advice: Protect yourself with these recommendations Stay hydrated: Make sure to drink plenty of fluids.Seek cool shelter: Opt for an air-conditioned room to stay comfortable.Check on others: Stay out of the sun, and make sure to check up on relatives and neighbors.Protect your little ones and furry friends: Never leave young children and pets alone in vehicles, especially during hot weather when car interiors can become dangerously hot in a matter of minutes.Exercise caution outdoors: If you work or spend time outside, take additional safety measures.Consider the timing: When possible reschedule strenuous activities to early morning or evening.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 August 22, 2026 at 2:30 PM.