Chicago Endures Wettest Summer in Decades with Record Rainfall and Severe Weather
Chicago Endures Wettest Summer in Decades with Record Rainfall and Severe Weather
US · Published Aug 20, 2026
Chicago is experiencing one of its wettest and most challenging summers in recent memory, with nearly 22 inches of rain recorded at Midway Airport since June 1, 2026, according to the National Weather Service (NWS). This figure is approaching the summer rainfall record of 23.48 inches set in
The city has faced a relentless series of rainstorms, severe weather events, and high humidity, disrupting outdoor activities and events. Notable disruptions include a foggy Fourth of July, a muddy Lollapalooza, and delays during the Air and Water Show. Additionally, Chicago experienced some of the worst air quality globally in July due to wildfire smoke from Minnesota and Ontario. The weather has also created favorable conditions for the invasive Asian Tiger mosquito, which has been a persistent nuisance for residents. (Source: Block Club Chicago, 2026-08-19, 13:00 GMT)

Impact & Risks

The adverse weather has significantly impacted Chicago residents and businesses. Outdoor events, including weddings, sports leagues, and festivals, have been disrupted or canceled due to rain, storms, and high humidity. Businesses reliant on outdoor activities, such as Chicago Water Sport Rentals and O’Brien’s Riverwalk Café, have reported significant revenue losses, with some experiencing a 20% drop in sales compared to previous years. The high humidity and frequent rain have also led to an increase in mosquito activity, particularly from the invasive Asian Tiger mosquito, which poses a health risk to residents. Additionally, the poor air quality in July, caused by wildfire smoke, has further compounded the challenges for outdoor activities.

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