Chicago weather: Heat warnings, advisories in effect with chance for storms Monday

By ABC7 Chicago Digital Team WLS logo
Monday, July 27, 2026 10:00AM
ABC7 AccuWeather Forecast
Watch the latest 7-day outlook from the ABC7 Weather team.

CHICAGO (WLS) -- Heat advisories and warnings are in effect for the Chicago area Monday, with a chance for storms as well.

Heat index values in western parts of the Chicago area could exceed 110, while the rest of the area could see heat index values more than 100, ABC7 Accuweather Meteorologist Tracy Butler said.

ABC7 Chicago is now streaming 24/7. Click here to watch

An Extreme Heat Warning is in effect for DeKalb, Grundy, La Salle and Livingston counties until 9 p.m. Monday.

A Heat Advisory is in effect for Boone, Cook, DuPage, Kane, Kendall, Lake, McHenry and Will counties in Illinois and Lake, newton, Jasper and Benton counties in Indiana until 9 p.m.

How to stay cool in Chicago area amid rising temperatures this summer: LIST

The Chicago area is under a Level 3 risk for severe weather Monday, but Butler said some models show the area not getting hit with any storms.

Butler said with the humidity, it is possible for storms to develop quickly.

A reminder during this heat: community cooling centers are open.

You can also cool off at Chicago Park District facilities, public libraries and police stations.

Seniors are welcome at any city senior center.

To request a well-being check, call 3-1-1.

Cooling centers are also open across the suburbs.

Weather Alerts | Live Doppler Radar

Cook County Radar | DuPage County Radar | Will County Radar | Lake County Radar (IL) | Kane County Radar | Northwest Indiana Radar


Copyright © 2026 WLS-TV. All Rights Reserved.