Chicago weather today: Extreme heat forecast prompts Chicago Heat Advisory; heat index exceeds 100 degrees in parts of area

CHICAGO (WLS) — Extreme heat is impacting the Chicago area on Monday afternoon after storms popped up in the morning hours.

The National Weather Service has announced a Heat Advisory effective from noon until 8 p.m. on Monday for several counties, including Boone, Cook, DeKalb, Will, Grundy, Kane, Kankakee, Kendall, LaSalle, Lake (IL), Livingston, McHenry, Ogle, Winnebago, Newton, Jasper, Lake (IN), and Porter. Additionally, a previously issued Severe Thunderstorm Warning for some areas has been lifted.

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

Afternoon temperatures rose to the low to mid-90s, but the heat index is expected to reach between 105 and 109 degrees, according to ABC7 Chicago AccuWeather Meteorologist Mark McGinnis.

But the heat is not stopping from coming to enjoy Monday night’s Summer Series concert at Millennium Park.

And heat or not, Lollapalooza kicks off on Thursday, and the work to get everything set up in time needs to be completed.

READ MORE | AC issue prompts hours-long bypass at Rush ER during extreme heat in Chicago: spokesperson

Crews have been working nonstop all over Grant Park, setting up stages, food tents and outside vendors.

It is a beehive of activity. ABC7 spoke to one of the folks getting it all done about what it is like to work in these conditions.

“Our priority is ensuring everyone’s safety. We might take a 15-minute break every half hour, which might be more than necessary. However, we have ample cold water, plenty of shade, hats, sunscreen, and sunglasses available,” said Thomas Hickman.

ABC7 also spoke to a pulmonary specialist at Northwestern Memorial Hospital earlier Monday.

Dr. Justin Fiala said people need to be attentive to how their body is reacting, especially if they are spending a significant period of time outdoors.

“If the heart rate is racing. If there is a pounding headache. Flushed skin, but dry skin, so you’re not sweating as much, as you ought to be those are signs that maybe you should reassess. Take a break from whatever you’re doing,” Fiala said.

Fiala said it is the humidity that the body struggles with the most. But the good news is that the Chicago area should catch a break from the sweltering conditions by the end of Tuesday. In the meantime, it is important to hydrate.

RELATED | Rising summer heat increases risk of child deaths in hot cars

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


Copyright © 2025 WLS-TV. All Rights Reserved.

You May Also Like

Police Discover 13 Zip-Tied Iguanas in Man’s Vehicle During Traffic Stop

During a routine traffic stop in Polk County, Florida, a startling discovery…

Humanoid Robot ‘Bebop’ Delays Southwest Airlines Departure from Oakland San Francisco Bay Airport

Passengers on a Southwest Airlines flight from Oakland to San Diego found…

Urgent Recall Alert: Over 88,000 Harley Davidson Motorcycles at Risk of Oil Ejection

Harley-Davidson is recalling over 88,000 motorcycles spanning nine different models due to…

Crocodile Dundee Icon Paul Hogan Spotted Following Son’s Arrest

Renowned for his iconic role in “Crocodile Dundee,” actor Paul Hogan was…

University Cuts Funding for Hillel Chapter Over Alleged International Law Concerns

In a groundbreaking decision, students at New York City’s New School have…

Gavin Newsom Faces Intense Criticism Following Report on California’s Population Trends

A sobering report has revealed that California saw a decline of over…

May Day Protests Across US Revive ’86 47′ Slogan Linked to James Comey

The slogan “86 47,” popularized by former FBI Director James Comey, made…

Uncovering the True Cost: Are We Paying Enough for Our Actions?

President Donald Trump announced late Saturday that he is assessing a new…

Body of Missing Man Discovered in Abandoned Cemetery Crypt Linked to Biker Gang Investigation

A lead in the case of missing man Keith Palumbo directed investigators…

Miraculous Rescue: Timmy the Humpback Whale Liberated in North Sea After Weeks of Struggle Near Germany

On Saturday, a rescue team successfully freed a humpback whale that had…

Iran’s Drastic Measures: Execution Surge and Over 4,000 Arrests in Nationwide Crackdown

The United Nations’ High Commissioner for Human Rights, Volker Türk, has criticized…

Toy Story 5 Unveils Exclusive Collectibles: Don’t Miss Out on the Latest Must-Have Toys

As an active participant in various affiliate marketing networks, Localish earns commissions…