With heat indices expected to be as high as 105 degrees, some west suburban schools in the area have called off classes for Friday.
The Indian Prairie School District 204 on Thursday afternoon said classes in 19 of the district's non-air conditioned elementary schools were canceled, giving students an extra long Labor Day weekend.
Schools closed include Brookdale, Brooks, Builta, Clow, Cowlishaw, Fry, Georgetown, Gombert, Graham, Kendall, Longwood, McCarty, Patterson, Spring Brook, Steck, Watts, Welch, White Eagle, and Young in parts of Naperville, Aurora Bolingbrook and Plainfield.
"The warm temperatures experienced [Thursday] ... will not allow our buildings to sufficiently cool down in time to handle expected high temperatures," said Supt. Kathryn Birkett.
All other schools in the district, including Owen and Peterson elementary, will remain open as scheduled, officials said.
The Naperville Sun explained why some of the Indian Prairie District 204 schools have air conditioning while others do not.
Dangerously warm temperatures are expected to remain in the Chicago area through Friday. Air temperatures will be in the mid-90s, meteorologists say, pushing the heat index to as high as 105 degrees.
A front of cooler air is predicted to push into the area on Friday evening.
The hot weather won't be an issue for Chicago Public Schools. A previously scheduled staff event already had schools closed.