UPDATE: Extreme heat watch in place for Los Angeles County from Tuesday to Thursday

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On Thursday at 10:46 a.m. the NWS Los Angeles/Oxnard CA released an updated extreme heat watch valid from Tuesday 8 a.m. until Thursday 9 p.m. The watch is for Santa Clarita Valley, Western San Fernando Valley, Eastern San Fernando Valley, Western San Gabriel Mountains and Highway 14 Corridor, Eastern San Gabriel Mountains and Los Angeles.

"Dangerously hot conditions with temperatures up to 100 degrees possible. Hottest Wednesday and Thursday," explains the NWS. "Temperatures are expected to cool slightly after Thursday but will remain well above normal through next weekend."

"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," says the NWS.

This watch is in effect until Jun. 25 at 9 p.m.

Protect yourself during a heat wave with these tips from the NWS

• Stay hydrated: Keep yourself well-hydrated by drinking 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.
• Ensure child and pet safety: Do not leave young children and pets unattended in vehicles when car interiors can reach lethal temperatures in a matter of minutes.
• Take extra precautions outdoors: If you work or spend time outside, be sure to take additional safety measures.
• Consider the timing: When possible reschedule strenuous activities to early morning or evening.
• Be alert to warning signs: Educate yourself about the signs and symptoms of heat exhaustion and heat stroke.
• Dress for comfort: Wear lightweight and loose-fitting clothing to stay cool.

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 June 18, 2026 at 10:27 AM.