Heat advisory affecting Los Angeles County until Thursday night

Written by Parriva — May 20, 2025

Western Santa Monica Mountains Recreational area, Eastern Santa Monica Mountains Recreational area, Calabasas/Agoura Hills and San Fernando Valley are the focus of an updated heat advisory released at 2:13 a.m. on Tuesday by the National Weather Service. The advisory is valid from 11 a.m. until Thursday, May. 22 at 9 p.m.

According to the NWS Los Angeles/Oxnard CA, “Temperatures up to 100 degrees expected.”

“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.

Beating the heat: Heat safety guidelines from the NWS

Stay hydrated: Make sure to drink plenty of fluids.

Seek shelter: Stay indoors in an air-conditioned room to keep cool.
Avoid sun exposure: Stay out of the sun, and make sure to check up on relatives and neighbors.

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.

Caution outdoors: Take extra precautions if you work or spend time outside.

Optimal timing: If possible, reschedule strenuous activities to early morning or evening when the heat is less intense.

Recognize heat-related issues: Learn to identify the warning signs of heat exhaustion and heat stroke.

Dress comfortably: Wear lightweight, loose-fitting clothing to stay comfortable.

Additional tips for outdoor workers:

The Occupational Safety and Health Administration (OSHA) recommends frequent rest breaks in shaded or air-conditioned areas for outdoor workers.

If someone is overwhelmed by the heat, quickly relocate them to a cool, shaded location.

In emergency situations, dial 911 for immediate assistance.

These NWS heat safety directives are essential for safeguarding your well-being when facing high temperatures. Stay well-informed and take the necessary precautions to shield yourself and others from the potential hazards of extreme heat.

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