Heat Advisory

Full Alert Message

URGENT - WEATHER MESSAGE National Weather Service San Francisco CA 1137 AM PDT Wed Jun 10 2026 ...HEAT ADVISORY NOW IN EFFECT FROM NOON THURSDAY TO 7 PM PDT FRIDAY... * WHAT...Temperatures between 90 and 95 for most areas, with some readings above 100 degrees. Hottest conditions across the East Bay Hills and Valleys. * WHERE...The Santa Clara Valley and Eastern Hills, and The East Bay Hills and Valleys. * WHEN...From noon Thursday to 7 PM PDT Friday. * IMPACTS...This level of heat affects primarily those individuals extremely sensitive to heat, especially when outdoors without effective cooling and/or adequate hydration. 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.