Creating choropleth maps and heat maps: Leafmap supports the creation of choropleth maps, where colors represent different data values for specific geographic areas. You can also create heat maps to ...

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A brutal heat wave across the eastern United States trapped millions of people in sweltering air this week with record-high temperatures.

Extreme heat is impacting states across the country. See maps of high temperature forecasts and heat index levels.

Stay safe in this sweltering heat, New Jersey. Here's the latest today, from heat maps, advisories and warnings, to when we'll see relief.

More than half the country, including Illinois, is currently in a heat dome. Here's what that means and how to stay safe during excessive heat.