Temperatures will be up to 15 degrees above normal this week, peaking Wednesday and Thursday, with a heat advisory for the Bay Area before a cool trend Friday.
There were about 4.2 deaths per 1 million Californians last year where heat exhaustion was a factor. Only once in the last 20 years has the death rate been higher.
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Temperatures continue to rise thanks to climate change. But state officials have moved glacially slow to put protections in place for people toiling during the summer at indoor workplaces like warehouses and factories.