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Report: Arizona counties could see temperatures top 125 by 2053

Ralph Freso/Getty Images

Six Arizona counties could see the heat index reach 125 degrees at least one day a year in the next 30 years, according to a new report from the nonprofit First Street Foundation.

Mohave, Maricopa, La Paz, Pima, Pinal and Yuma counties will see higher temperatures for longer periods by 2053 due to a changing climate.

Maricopa County could see an average of 100 days with a heat index above 100 degrees, compared to the current average of 83 days.

While Yuma County is expected to have the longest, hottest summer with a projected 71 consecutive days above 100 degrees.

“Extreme danger” heat currently impacts 8 million people per year and that number will likely grow to 107 million people in 2053.