The National Weather Service has issued a heat advisory for Wednesday and Thursday for the interior regions of the Bay Area.
The heat advisory applies to the North Bay valleys, North Bay mountains, East Bay valleys, and East Bay mountains as well as the Santa Clara Valley from 11 a.m. Wednesday to 8 p.m. Thursday.
Temperatures will continue to rise in inland areas as pressure from the east continues to build over southern California, weather officials said.
Areas in the North Bay and East Bay mountains and valleys should prepare for temperatures into the 100s, while Santa Clara County can expect highs in the 90s.
Onshore flow and a shallow marine layer will moderate temperatures near the coast, with some low clouds in the morning and night, according to weather officials.
Temperatures will peak on Wednesday and then cool slightly on Friday as low atmospheric pressure sinks down the Pacific coast.
Santa Clara County plans to extend hours at cooling centers and shelters to provide the public relief from the heat, according to a news release issued Tuesday. A full list of the county's cooling centers can be found at sccgov.org.
Anyone who may be particularly vulnerable to the heat, such as an elderly person, someone with an alcohol or drug disorder or severe mental illness, are advised to visit a cooling center or stay in an air-conditioned space from 10 a.m. to 8 p.m.
Other precautions the public can take is staying hydrated with water and fluids with electrolytes; limiting physical activity; not keeping people or pets in a closed, parked car; and staying in an air-conditioned area during peak heat hours.
Anyone in need can find more help with health and human services by calling 211; with assistance or to report a homeless person in need through the countyâ€™s homeless help line: 408-793-0550; and with shelter through HomeFirst's homeless help line: 408-510-7600.
Those without shelter and seeking respite from the heat can learn more about available services by texting "BADWEATHER" TO 888777.