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Severe · Extreme Heat WarningActive alert

Extreme Heat Warning issued September 2 at 11:14AM CDT until September 4

Affecting Knox; Stark; Peoria; Marshall; Woodford; Fulton; Tazewell; McLean; Schuyler; Mason; Logan; De Witt; Piatt; Champaign; Vermilion; Cass; Menard; Scott; Morgan; Sangamon; Christian; Macon; Moultrie; Douglas; Coles; Edgar; Shelby; Cumberland; Clark; Effingham; Jasper; Crawford; Clay; Richland; Lawrence

In effect until: Sep 3, 2026, 10:00 AM

Knox; Stark; Peoria; Marshall; Woodford; Fulton; Tazewell; McLean; Schuyler; Mason; Logan; De Witt; Piatt; Champaign; Vermilion; Cass; Menard; Scott; Morgan; Sangamon; Christian; Macon; Moultrie; Douglas; Coles; Edgar; Shelby; Cumberland; Clark; Effingham; Jasper; Crawford; Clay; Richland; Lawrence

Likely impact; effects through 10:00 AM.

Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.

See it on the live mapView official source
Read the original bulletin (official text)
* WHAT...Dangerously hot conditions with heat index values up to
around 105. Expect minimal relief overnight with lows in the mid
70s.

* WHERE...Portions of central, east central, southeast, and west
central Illinois.

* WHEN...Until 7 PM CDT Friday.

* IMPACTS...Heat related illnesses increase significantly during
extreme heat and high humidity events.
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Alert data: U.S. National Weather Service / NOAA · Translation: WeatherTranslate™