May 11, 2014 9:08 pm Hot Weather Coming to Bay Area Tuesday A heat watch and a Spare the Air alert is coming to the Bay Area this week. Temperatures are expected to climb by Tuesday. NBC Bay Area Meteorologist Rob Mayeda reports on this week’s weather forecast. US & World Videos 2:48 Forecast: Gradual warming trend 1:35 Kari's forecast: Gradual warming trend 2:59 Rob's forecast: Warmer days ahead 3:34 Bay Area Forecast: Warmer days ahead 2:42 Cinthia's forecast: Sunny and breezy