bay area weather 8 hours ago Bay Area heat advisory in effect through Wednesday The entire Bay Area will be under a heat advisory beginning Monday morning and ending Wednesday night, according to the National Weather Service. Kari Hall and Bob Redell report. US & World Videos 3:31 Forecast: Dangerous heat this week 2:32 Kari's forecast: Dangerous heat this week 3:26 Rob's Forecast: Significant heat ahead and fire danger 2:40 Forecast: Significant heat ahead and fire danger 2:54 Cinthia's forecast: Bracing for heat for the Bay Area