Summary: The Bay Area and Northern California have been punished by record-breaking temperatures for almost a week. In some cities, the mercury has climbed past 110 degrees. Chronicle meteorologist Gerry Diaz joins host Cecilia Lei to talk about what's causing it, the future of heat waves — and how you can beat the heat. | Unlimited Chronicle access: sfchronicle.com/pod Chronicle heat live blog: sfchronicle.com/heatwave Chronicle wildfire tracker: sfchronicle.com/firemap Learn more about your ad choices. Visit megaphone.fm/adchoices
