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Read more Heat advisory for Northern California likely to expire at 10 p.m., says the NWS
On Sunday at 9:34 p.m. a heat advisory was released by the NWS San Francisco CA in effect until Wednesday at 10 p.m. The advisory is for Sonoma Coastal Range, North Bay Interior Mountains, North Bay Interior Valleys, San Francisco Bay Shoreline, East Bay Interior Valleys, Santa Cruz Mountains, Santa Clara Valley Including San Jose, Eastern Santa Clara Hills, East Bay Hills, Southern Salinas Valley/Arroyo Seco and Lake San Antonio and Santa Lucia Mountains and Los Padres National Forest as well as Monterey County.
The NWS informs, “Hot conditions with maximum temperatures in the mid-90s to low-100s. Mild minimum temperatures and weak onshore flow will limit overnight relief.”
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“This level of heat affects anyone without effective cooling and/or adequate hydration. Impacts likely in some health systems, heat-sensitive industries and infrastructure,” comments the NWS.
This advisory is in effect until Wednesday at 10 p.m.
Protect yourself during a heat wave with these tips from the NWS
- Consume plenty of fluids to stay hydrated.
- Seek shelter: Stay indoors in an air-conditioned room to keep cool.
- Stay out of the sun, and check up on relatives and neighbors.
- Child and pet safety: Never leave young children and pets unattended in hot vehicles – car interiors can reach lethal temperatures in a matter of minutes.
- Be mindful outdoors: Take extra precautions when working or spending time outside.
- Consider the timing: When possible reschedule strenuous activities to early morning or evening.
- Recognize warning signs: Familiarize yourself with symptoms of heat exhaustion and heat stroke.
- Dress comfortably: Wear lightweight and loose-fitting clothing.
To ensure safety during outdoor work, adhere to the Occupational Safety and Health Administration (OSHA)’s recommendations by incorporating regular rest breaks in shaded or air-conditioned environments. If someone is affected by heat, immediately transfer them to a cool and shaded area. In an emergency, call 911.
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Source: The National Weather Service
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This story was originally published October 4, 2026 at 9:36 PM.