April 12, 2013 8:02 am Great Air Quality & Warming Temps Friday; Weekend Changes Ahead Meteorologist Christina Loren has your Bay Area weather forecast. US & World Videos 3:48 Jeff's Forecast: Weekend rain timeline 2:42 Forecast: Warm day, Saturday rain 1:43 Kari's forecast: Warm day, Saturday rain 2:04 Jeff's Forecast: Weekend rain update 3:51 Jeff's Forecast: Heat to fade as weekend rain is on the way