CHICAGO | Chicago readers should plan for a hot, sunny day with a high near 94°F, southwest winds and heat index values that can make conditions feel hotter, according to official National Weather Service forecast data.
Today and tonight
Chicago: Today — Sunny; high near 94°F; southwest wind 10 to 15 mph, with gusts as high as 25 mph; heat index values as high as 102. Tonight — Mostly clear; low near 79°F; southwest wind 10 to 15 mph, with gusts as high as 25 mph; heat index values as high as 99 early in the evening.
Planning notes
The heat should shape outdoor work, youth sports, day camps, festivals, transit waits and evening plans. Heat index values above 100 can increase the risk of heat illness, especially when people are active, dehydrated, working on pavement or unable to cool down indoors.
Southwest winds may provide some movement in the air but should not be treated as protection from heat. People should still use shade, rest breaks and water, and event organizers should plan for cooling access.
Safety reminders
Use air conditioning when available, drink water before thirst becomes severe, check on older adults and people without reliable cooling, and do not leave children or pets in vehicles. Outdoor workers and athletes should build in rest and hydration rather than trying to push through the hottest hours.
Forecasts can change quickly. Readers should check current National Weather Service forecasts, warnings and local emergency information before making travel, school, work or event decisions.
Additional Reporting By: National Weather Service Chicago Forecast; National Weather Service Chicago; NOAA; Heat.gov