- An area of intensely warm weather — a so-called “extreme heat belt” — with at least one day per year in which the heat index hits 125 Fahrenheit (52C), is expected to cover a U.S. region home to more than 100 million people by the year 2053.
- A key finding from the study was that heat exceeding the threshold of the National Weather Service’s highest category — called “Extreme Danger,” or above 125F — was expected to impact 8.1 million people in 2023 and grow to 107 million people in 2053, a 13-fold increase.
- This information was further studied by factoring in elevation, how water is absorbed in the area, the distance to surface water and the distance to a coast.
‘Extreme heat belt’ to cover middle of U.S. by 2053: report

