Haze over the San Francisco skyline is seen Friday, Sept. 1, 2017, from Treasure Island, San Francisco. Dozens of cooling centers opened throughout California, schools let students out early and outdoor events were canceled as temperatures soared from a heat wave expected to last through the Labor Day weekend.
Haze over the San Francisco skyline is seen Friday, Sept. 1, 2017, from Treasure Island, San Francisco. Dozens of cooling centers opened throughout California, schools let students out early and outdoor events were canceled as temperatures soared from a heat wave expected to last through the Labor Day weekend. Ben Margot AP
Haze over the San Francisco skyline is seen Friday, Sept. 1, 2017, from Treasure Island, San Francisco. Dozens of cooling centers opened throughout California, schools let students out early and outdoor events were canceled as temperatures soared from a heat wave expected to last through the Labor Day weekend. Ben Margot AP