Chicago heat wave with excessive heat warnings

Chicago is experiencing a severe heat wave with heat index values reaching 105 degrees and temperatures in the upper 90s from Tuesday through Thursday. The National Weather Service has issued excessive heat warnings and air quality alerts due to the dangerous conditions, prompting the city to open cooling centers for residents.

This is a long-running storyline that has developed over 38 days. The homepage highlights its most recent activity, so the outlet count there reflects the latest wave. The totals above cover the full run.