The advisory is in effect through 9 p.m. Thursday, and afternoon temperatures are expected in the high 90s up to 106, with overnight lows in the foothills only dipping to the 70s and lower 80s, according to the National Weather Service.
“Drink more fluids, keep yourself and your pets cool, and check on your family and neighbors,” the Santa Barbara County Office of Emergency Management said in an alert message Wednesday.
Daytime temperatures will be cooler in coastal areas, in the 70s and 80s on the South Coast, 90s in the Santa Ynez Valley, and 70s in the Santa Maria and Lompoc valleys.
Cuyama is forecast to reach the high 90s on Wednesday and Thursday, and cool to a high around 90 on Saturday.
“Temperatures inside vehicles, even if the windows are partially open, can quickly rise to life-threatening levels,” according to the Heat Advisory.