Heat Advisory

Status

Event Continued Active alert

Start Time

Wed 09/02/2026 03:47 PM EDT

End Time

Wed 09/02/2026 10:00 PM EDT

Significance

Advisory

Impacts

Low impact

Full Alert Message

URGENT - WEATHER MESSAGE National Weather Service Chicago IL 247 PM CDT Wed Sep 2 2026 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 9 PM CDT THIS EVENING... * WHAT...Heat index values of around 105 expected. * WHERE...Boone, Winnebago, Central Cook, DuPage, Kane, Lake IL, McHenry, Northern Cook, and Southern Cook Counties. * WHEN...Until 9 PM CDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take extra precautions when outside or consider altering outdoor plans. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke.

Technical Header

ILZ003>006-012-013-103>105-030200- /O.CON.KLOT.HT.Y.0006.000000T0000Z-260903T0200Z/ Winnebago-Boone-McHenry-Lake IL-Kane-DuPage-Northern Cook-Central Cook-Southern Cook- Including the cities of Woodstock, Oak Forest, Belvidere, Naperville, Lombard, La Grange, Oak Lawn, Lemont, Waukegan, Wheaton, Schaumburg, Des Plaines, Calumet City, Orland Park, Aurora, Cicero, Oak Park, Carol Stream, Park Forest, Northbrook, Palatine, Crystal Lake, Rockford, Gurnee, Downers Grove, Evanston, Buffalo Grove, Chicago, Algonquin, Elgin, McHenry, and Mundelein 247 PM CDT Wed Sep 2 2026