How Hot Does it Get By Location?

This map shows you how hot each United States location is. More specifically, when a place gets hot, how hot does it get? The darker color is less hot and the lighter color is hotter. The coloration is normalized using US data. You can mouse over each dot to see a given location’s data.

Each location on the map shows what is called the 1% cooling dry bulb temperature, which represents the outdoor temperature that is equaled or exceeded during only 1% of hours in a year. So, only during the hottest 1% of the year will the temperature be higher than this value. It is relevant during cooling season, also known as summer.

How did I make these maps? First, I gathered and organized a massive amount of data from various sources, then used Python to analyze the data, then Folium to create interactive maps.

This map uses data from ASHRAE’s climatic design conditions from 2021, the latest set, from https://ashrae-meteo.info/v2.0/. It has averages of 30 years of data for over 9,000 locations around the world.