Illinois, Indiana Moderate Heat Advisory | Effective 09/03/2026 17:56

Headline: 
Heat Advisory issued September 3 at 7:56PM CDT until September 4 at 7:00PM CDT by NWS Chicago IL
Event: 
Heat Advisory
Urgency: 
Expected
Effective: 
September 3, 2026 - 5:56pm
Expires: 
September 4, 2026 - 4:00am
Description: 
* WHAT...Heat index values 100 to 105 expected. * WHERE...In Illinois, Livingston, Ford, Iroquois, La Salle, Grundy, and Kankakee Counties. In Indiana, Benton, Jasper, and Newton Counties. * WHEN...Until 7 PM CDT /8 PM EDT/ Friday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses especially after several days of dangerous heat.
Instruction: 
Consider altering outdoor plans. If outdoors for prolonged periods of time, wear lightweight and loose fitting clothing. Take action when you see symptoms of heat exhaustion and heat stroke.
Area Description: 
La Salle; Grundy; Kankakee; Livingston; Iroquois; Ford; Newton; Jasper; Benton
Forcast Office: 
NWS Chicago IL
Sender: 
w-nws.webmaster@noaa.gov