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Rising Heat Index in Phoenix

Rising Heat Index in Phoenix

The average number of hours per summer day in Phoenix that the temperature was over 100°F has doubled over the past 50 years, in part as a result of the urban heat island effect. Hot days take a toll on both quality of life and loss of life. Arizona’s heat-related deaths are the highest of any state, at three to seven times the national average.1,2  Image Reference: Baker, et al.1

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