Heat Advisory in Northern California Until Wednesday
Heat Advisory in Northern California Until Wednesday
US · Published Oct 5, 2026
• A heat advisory is currently active for Northern California, issued by the National Weather Service (NWS) on Sunday, October 4, 2026, at 11:01 p.m.
• The advisory will remain in effect until Wednesday, October 7, at 10 p.m.

Impact & Risks

The heat wave is expected to significantly impact vulnerable populations, including those without air conditioning or access to cooling centers. Heat-sensitive industries and infrastructure may also experience disruptions. Prolonged exposure to high temperatures increases the risk of heat-related illnesses such as heat exhaustion and heat stroke. Residents in affected areas, including the North Bay Interior Valleys and Santa Clara Valley, should take precautions to stay safe.

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