Heat Advisory

Locations Affected

San Jose, CA ∙ Fremont, CA ∙ Oakland, CA ∙ Santa Rosa, CA ∙ Sunnyvale, CA ∙ Hayward, CA ∙ Antioch, CA ∙ San Mateo, CA ∙ Concord, CA ∙ Santa Clara, CA

Full Alert Message

URGENT - WEATHER MESSAGE National Weather Service San Francisco CA 1137 AM PDT Wed Jun 10 2026 ...HEAT ADVISORY REMAINS IN EFFECT FROM NOON TO 11 PM PDT THURSDAY... * WHAT...High temperatures between 90 and 103 for interior valleys and higher elevations. High temperatures between 85 and 96 degrees for the Bay Shoreline. * WHERE...North Bay Interior Mountains and Valleys, and San Francisco Bay Shoreline. * WHEN...From noon to 11 PM PDT Thursday. * IMPACTS...This level of heat affects most individuals sensitive to heat, especially those without effective cooling and/or adequate hydration. Impacts possible in some health systems and in heat-sensitive industries. PRECAUTIONARY/PREPAREDNESS ACTIONS... Hydration is a critical piece to surviving the heat. Drink water, and if possible, take water to those who are vulnerable. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to the early morning or evening. Take action when you experience symptoms of heat exhaustion and/or heat stroke. Beat the heat and check the backseat! Do not leave young children or pets in unattended vehicles. Car interiors will reach lethal temperatures in a matter of minutes.

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