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Extreme Heat Warning — Knox, IL, Stark, IL, Peoria, IL, Marshall, IL, Woodford, IL, Fulton, IL, Tazewell, IL, McLean, IL, Schuyler, IL, Mason, IL, Logan, IL, De Witt, IL, Piatt, IL, Champaign, IL, Vermilion, IL, Cass, IL, Menard, IL, Scott, IL, Morgan, IL, Sangamon, IL, Christian, IL, Macon, IL, Moultrie, IL, Douglas, IL, Coles, IL, Edgar, IL, Shelby, IL, Cumberland, IL, Clark, IL, Effingham, IL, Jasper, IL, Crawford, IL, Clay, IL, Richland, IL, Lawrence, IL
Issued
11:14 a. m. CDT · mié., sept. 2 2026
Expires
7:00 p. m. CDT · vie., sept. 4 2026
Issuing Office
NWS KILX

Affected Areas

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

Official Bulletin

* 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.

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