The only areas exempt from the advisory are the coastlines of the North Bay and San Mateo County, forecaster Duane Dykema said. Temperatures today are expected to be just as hot as they were Friday, when several heat records were broken.
"It's going to be another very hot day," Dykema said. Heat records for June 20 were broken at Oakland International Airport, where it was 97 degrees; San Jose, with 103 degrees; San Francisco, with 97 degrees; Gilroy with 107 degrees; and Salinas, with 105 degrees, Dykema said.
San Francisco International Airport tied its previous record-high temperature of 96 degrees, set in 1973.
Forecasters expect that San Jose and San Francisco could break records again today, Dykema said.
The Santa Clara County Office of Emergency Services advises residents to drink plenty of non-carbonated fluids; avoid drinks with alcohol, caffeine or sugar that speed up fluid loss; stay in air-conditioned places and wear lightweight, light-colored and loose-fitting clothing.
