In Tacoma, our analysis found that urban heat islands increase maximum temperatures by as much as 6.2 degrees F above the local baseline. Combined with regional climatic effects, neighborhoods in Central and South Tacoma may be as much as 14 degrees F hotter than neighborhoods in North Tacoma. 11,980 people live in neighborhoods where maximum temperature exceed the 90th percentile and where average per capita incomes are less than 200% the federal poverty level.

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