WBGT in Illinois - Klimo Insights

Illinois tends to have a meaningful midsummer WBGT season without the same persistence seen farther south. July is usually the main stretch to watch most closely. The South tends to run warmer than the North, even though the overall pattern is less persistent than in the South.

Browse 1,461 indexed Klimo WBGT locations in Illinois. Use the featured places below for a faster starting point, or jump into the full directory. If you are new to WBGT, start with what WBGT means, how heat stress works, and how to interpret WBGT thresholds.

What stands out in Illinois

The clearest statewide peak usually shows up in July.
The biggest statewide split is between the South and the North.
Carbondale is one of the strongest higher-WBGT examples in the state, while Chicago is a useful contrast.
Local city pages are more useful than a single statewide assumption when you are planning around heat.

In Illinois, the biggest planning value comes from watching the midsummer peak and comparing cities before assuming the whole state behaves the same way. That is usually enough to make this page more useful than a simple statewide average.

Featured places in Illinois: These cities are useful starting points for seeing how the WBGT pattern shifts across Illinois.

Browse the full alphabetical Illinois location list below, or use the featured places above if you want a faster starting point.