Riverside County Mountains under a heat advisory Wednesday and Thursday

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A heat advisory was issued by the NWS San Diego CA on Tuesday at 12:13 a.m. valid from Wednesday 10 a.m. until Thursday 8 p.m. for Riverside County Mountains.

The NWS informs, "High temperatures in the 90s to 102 below 6000 feet expected."

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

This advisory is in effect until Thursday at 8 p.m.

NWS Heat Wave Safety Advice: Protect yourself with these recommendations

• Stay hydrated: Remember to drink plenty of fluids.
• Seek shelter: Stay indoors in an air-conditioned room to keep cool.
• Avoid direct sun exposure: Protect yourself and check on vulnerable relatives and neighbors.
• Prioritize 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.
• Take extra precautions outdoors: If you work or spend time outside, be sure to take additional safety measures.
• Find the right time: Consider rescheduling strenuous activities to early morning or evening if possible.
• Recognize early indicators: Learn to identify the warning signs of heat exhaustion and heat stroke.
• Dress comfortably: Wear lightweight and loose-fitting clothing.

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.