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    5 Freeway north of LA placed under a heat advisory Wednesday
    • July 20, 2026

    5 Freeway north of LA is under a heat advisory which was released by the National Weather Service on Monday at 12:26 p.m. The advisory is valid for Wednesday, July 22 between 10 a.m. and 8 p.m.

    The NWS Los Angeles/Oxnard CA informs, “Temperatures between 93 and 103 degrees expected.”

    “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. 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,” the NWS said.

    The full list of affected locations includes:

    • 5 Freeway corridor near Santa Clarita
    • Santa Clarita Valley
    • Lake Casitas
    • Ojai Valley
    • Central Ventura County Valleys
    • Western Santa Monica Mountains Recreational area
    • Eastern Santa Monica Mountains Recreational area
    • Calabasas/Agoura Hills
    • San Fernando Valley
    • Southeastern Ventura County Valleys
    • Santa Susana Mountains
    • Southern Ventura County Mountains
    • Northern Ventura County Mountains
    • Western San Gabriel Mountains/Highway 14 Corridor
    • Eastern San Gabriel Mountains
    • Western Antelope Valley Foothills
    • Eastern Antelope Valley Foothills
    • San Gabriel Valley

    Staying safe in high temperatures

    Safety tips from the Environmental Health and Safety office at UC Irvine:

    • Drink water: Drinking plenty of water frequently is vital for those exposed to heat. An individual may produce as much as 2 to 3 gallons of sweat per day. To replenish that fluid you should drink 3 to 4 cups of water every hour.
    • Take breaks: Taking breaks in a cool shaded area and allowing time for recovery from the heat during the day are effective ways to avoid heat-related illness.
    • Avoid some beverages: Avoid or limit the use of alcohol and caffeine during periods of extreme heat. Both dehydrate the body.
    • Stop and rest: If you start to feel symptoms such as nausea, dizziness, weakness or unusual fatigue, rest in a cool shaded area. If symptoms persist or worsen seek immediate medical attention.
    • Clothing: Whenever possible, wear clothing that provides protection from the sun but allows airflow to the body. Protect your head and shade your eyes when outdoors.
    • Be prepared: When in the heat be sure to pay extra attention to those you’re with and be sure you know how to call for medical attention.

    For information about cooling centers operated by Los Angeles, Orange, Riverside and San Bernardino counties, see https://ready.lacounty.gov/heat/, https://ocgov.com/cooling-centers, https://capriverside.org/cool-centers and DPH.

    For more local weather alerts, visit our Weather Advisory page

     Orange County Register 

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