Temperatures are expected to be as high as 100 to 102 degrees, with heat indices between 105 to 110 degrees.
The Office of Emergency Management and Communications has advised residents to avoid heat-related emergencies and illness.
Families were trying to beat the heat at Montrose Beach Tuesday.
"We're planning on leaving by noon and going home. We live in Beecher, so we're kinda out by Kankakee, so we came out nice and early so we get outta here before it gets super hot," said beachgoer Dawn George.
The Illinois Farm Bureau says this is the sixth-driest year on record so far, and it's easy to see just looking at the grass on the North Side near the lakefront.
Elyda Healym who hit the running path early Tuesday, is taking it all in stride.
"I'm not complaining at all," she said. "I'm from Brazil, so this is nothing."
Chicagoans can call 311 for the nearest city cooling center, request well-being checks, and request rides to cooling centers, if needed. Cooling centers are located within the six community service centers operated by the Department of Family and Support Services. Chicago public libraries, park facilities and police stations also serve as cooling centers.
Chicago Department of Public Health Tips:
- Avoid going out into the heat, especially in the hours around mid-day
- If you do go outside, wear loose, lightly-colored clothing and wear a hat with a brim
- Drink plenty of water-- at least eight glasses a day
- Get into an air-conditioned space or a cooler part of the house, like a basement
- Keep shades drawn and blinds closed to block the sun
- Take cool baths or showers; use cool towels and washcloths to cool the skin
- Slow down, avoid or minimize physical exertion
- Don't leave any person or pet in a parked car, even for a few minutes
Outdoor exercise is not advised during this time. Individuals who choose participate in outdoor activities should drink plenty of water and take the precautions listed above to reduce the risk of heat exhaustion and heat stroke.
"All City of Chicago beaches, public parks and public pools make excellent places to cool off, however, open fire hydrants do not," an OEMC press release said.