Chicago Braces for Near-100° Heat Wave as Humidity Rises

A Southeast-driven high-pressure system will push an extreme heat event into Chicago from Monday through Wednesday, with temperatures near 100°F and heat indices possibly around 105°F. After Sunday storms, hot, humid air could peak midweek, aided by the Midwest’s “corn sweat” humidity. City officials urge residents to stay indoors, hydrate, and seek cooling centers at city buildings, senior centers, Park District facilities, and other public venues; beaches and pools remain open, and 311 can assist with shelter placements for those in need. Storm activity later in the week could temper the heat, but exact timing remains uncertain.