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September 5, 2025PLOS ClimateOpen Access

Rise in heat related mortality in the United States

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Observational analysis highlights rising heat related mortality in regions of the U.S., indicating urgent public health implications.

Extreme heat events significantly impact mortality rates across the United States, showing alarming trends in every region.
From 1981 to 2022, the rising number of extreme heat days has the strongest correlation with heat related mortality.
Heat related mortality is increasing at a greater rate in the Southwest and Southeast compared to heat severity itself.
Future models need to incorporate various heat characteristics and measures of social vulnerability to address complex risks.

Narayanan et al. (2025) studied this question.

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