Illinois, Indiana Moderate Heat Advisory | Effective 09/04/2026 00:54

Headline: 
Heat Advisory issued September 4 at 2:54AM CDT until September 4 at 10:00PM CDT by NWS Chicago IL
Event: 
Heat Advisory
Urgency: 
Expected
Effective: 
September 4, 2026 - 12:54am
Expires: 
September 4, 2026 - 11:00am
Description: 
* WHAT...Peak heat index values this afternoon of 100 to locally 110 degrees. * WHERE...Portions of north central and northeast Illinois and northwest Indiana. * WHEN...Until 10 PM CDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses.
Instruction: 
Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.
Area Description: 
Winnebago; Boone; McHenry; Lake; Ogle; Lee; De Kalb; Kane; DuPage; Kendall; Northern Cook; Central Cook; Southern Cook; Northern Will; Southern Will; Eastern Will; Lake; Porter
Forcast Office: 
NWS Chicago IL
Sender: 
w-nws.webmaster@noaa.gov