Los Angeles County under a heat advisory from Tuesday to Thursday

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At 11:48 a.m. on Sunday, the NWS Los Angeles/Oxnard CA released a heat advisory valid from Tuesday 8 a.m. until Thursday 9 p.m. The advisory 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 the middle to upper 90s possible. Hottest Wednesday," describes the NWS. "Higher humidity will have the potential to add to the heat discomfort in the afternoons. Temperatures are expected to cool slightly after Thursday but will remain well above normal through the weekend."

"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," adds the NWS.

This advisory is in effect until Thursday at 9 p.m.

During heat waves, consider the following tips from the NWS

• Stay hydrated: Remember to drink plenty of fluids.
• Find cool shelter: Stay in an air-conditioned room.
• Avoid direct sun exposure: Protect yourself and check on vulnerable relatives and neighbors.
• Child and pet safety: Never leave young children and pets unattended in vehicles, especially when car interiors can reach lethal temperatures within minutes.
• Be mindful outdoors: Take extra precautions when working or spending time outside.
• Find the right time: Consider rescheduling strenuous activities to early morning or evening if possible.
• Be alert to warning signs: Educate yourself about the signs and symptoms of heat exhaustion and heat stroke.
• Stay cool with clothing: Wear lightweight and loose-fitting clothing.

To minimize risks during outdoor work, the Occupational Safety and Health Administration (OSHA) advises incorporating frequent rest breaks in shaded or air-conditioned areas. If someone experiences heat-related symptoms, promptly relocate them to a cool and shaded spot. In case of an emergency, dial 911.

Source: The National Weather Service

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This story was originally published June 21, 2026 at 11:53 AM.