Be sure you follow some expert advice on keeping your kids as cool as possible, WGN in Chicago reports.
"Young children are especially vulnerable to heat because they produce more heat at rest, they have a higher body surface area to mass ratio and they absorb more heat," Dr. Karen Sheehan of Children's Memorial Hospital, tells the TV station. "They don't sweat as well as adults. An adult and adolescent who are healthy, it takes about four days to get used to this type of weather, but for a kid it's about two weeks and that puts them at much more risk."
First up: the car. Just don't leave your kids in there. Even for a few minutes as you run into the store.
"We've only had our in-car thermometer in for about 20 minutes, if that," Jessica Choi of Safe Kids Illinois tells WGN. "We've already got a difference of 10 degrees. Its 10 degrees hotter in the car than it is outside."
Next: Keep kids away from open windows, especially on upper level floors.
"If you need to open windows, open from the top down," Amy Hill, injury prevention manager at Children's Memorial, tells WGN. "Also, move furniture away from the windows so kids can't crawl on top and fall out. That's what happens most often, people don't think about the couch being near the window. They crack the window for some circulation and the kid climbs up and falls out. It's a huge problem in Chicago."
And, as always: Don't take your eyes off a child playing in a swimming pool.
"It's important for parents and caregivers to remember that babies and toddlers can drown in one inch of water," Hill tells WGN. "Empty all buckets, containers and wading pools immediately after you are done using them."