Illinois, Indiana Moderate Heat Advisory | Effective 06/28/2026 09:18

Headline: 
Heat Advisory issued June 28 at 11:18AM CDT until July 1 at 10:00PM CDT by NWS Chicago IL
Event: 
Heat Advisory
Urgency: 
Expected
Effective: 
June 28, 2026 - 9:18am
Expires: 
June 28, 2026 - 7:30pm
Description: 
* WHAT...Heat index values around 105 expected each afternoon * WHERE...Portions of central, east central, north central, and northeast Illinois and northwest Indiana. * WHEN...From noon CDT /1 PM EDT/ Monday to 10 PM CDT /11 PM EDT/ Wednesday. * 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. Do not leave young children and pets in unattended vehicles. Car interiors will reach lethal temperatures in a matter of minutes.
Area Description: 
Winnebago; Boone; McHenry; Lake; Ogle; Lee; De Kalb; Kane; DuPage; La Salle; Kendall; Grundy; Kankakee; Livingston; Iroquois; Ford; Northern Will; Southern Will; Eastern Will; Lake; Porter; Newton; Jasper; Benton
Forcast Office: 
NWS Chicago IL