San Bernardino County Mountains under a heat advisory Wednesday and Thursday

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On Tuesday at 12:13 a.m. the NWS San Diego CA issued a heat advisory valid from Wednesday 10 a.m. until Thursday 8 p.m. for San Bernardino County Mountains.

The NWS informs, "High temperatures in the lower to mid 90s below 6000 feet expected."

"Hot temperatures may cause heat illnesses," describes the NWS.

This advisory is in effect until Thursday at 8 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.
• Stay in an air-conditioned room.
• Look out for others: Stay out of the sun, and check up on relatives and neighbors.
• Child and pet welfare: Never forget to safeguard young children and pets by not leaving them unattended in vehicles, especially during scorching weather when car interiors can become life-threateningly hot.
• Take extra precautions outdoors: If you work or spend time outside, be sure to take additional safety measures.
• Time your activities wisely: 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 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 July 7, 2026 at 12:16 AM.