San Francisco, California – A sharp warmup will push temperatures into the mid to upper 90s across the interior Bay Area and North Bay by Wednesday and Thursday, putting thousands at risk for heat-related health issues. Residents in the East Bay and southern Santa Clara Valley will be most affected, with moderate heat risk levels likely to stress health systems and vulnerable groups.
According to the National Weather Service, this extended stretch of heat will primarily impact those without effective cooling or access to air conditioning. Overnight lows are only expected to dip into the mid-60s, offering little relief. Officials urge everyone—especially older adults, young children, and people with chronic health conditions—to stay hydrated, avoid strenuous outdoor activities during the hottest hours, and check on neighbors who may need extra help.
Critical reminders include never leaving children or pets in vehicles, taking frequent breaks in shaded or air-conditioned spaces, and adjusting work schedules when possible. Cities such as Concord, Livermore, and Santa Rosa should brace for some of the highest temperatures and most pronounced impacts…