A dense fog on the night of July 4 largely obscured Navy Pier’s fireworks display in Chicago, which had been promoted as the largest and longest in the pier’s history to mark the United States’ 250th anniversary. The show, which began at 10 p.m., featured nearly twice the usual number of fireworks and covered a broader stretch of the lakefront than previous summer exhibitions. However, thick fog rolling in after afternoon storms significantly limited visibility, leaving many spectators unable to fully enjoy the spectacle.
Navy Pier acknowledged the impact of the fog in a statement issued early Sunday, expressing disappointment over the diminished visibility and its effect on the guest experience. As a form of compensation, the pier announced it will provide free rides on the Centennial Wheel every Wednesday evening starting at 6 p.m. through Labor Day. In addition, the free fireworks displays will continue on Wednesday and Saturday nights at Navy Pier throughout the summer season.
The weather system that brought the fog also led to the cancellation of several other planned fireworks events in suburban Chicago communities, including Arlington Heights and Naperville. The fog and accompanying storms affected other activities as well; a Chicago Cubs game at Wrigley Field experienced a 15-minute delay due to the hazy conditions, which disrupted visibility on the field and briefly disabled the pitch tracking system. Cubs center fielder Pete Crow Armstrong described the difficulty of playing in such low visibility, noting it was unlike anything he had previously encountered in professional sports.
The National Weather Service reported that fog persisted near the Lake Michigan shoreline into Sunday morning, though visibility gradually improved. At times on Saturday night, visibility along the shore dropped below a quarter mile, impacting travel and contributing to disruptions at Chicago’s two major airports. Meteorologists characterized the fog more as mist and noted ongoing scattered storms, especially south of Interstate 80.
The region had received heavy rainfall preceding the holiday weekend, with some areas experiencing more than eight inches of rain between July 2 and 4. This rainfall, combined with saturated grounds and overwhelmed sewer systems, resulted in widespread flooding, particularly in Kane, DuPage, and Will counties. Local authorities in Darien and Plainfield urged residents to avoid travel during peak flood conditions, with Plainfield officials reporting downed bridges and power lines near the DuPage River. Emergency responders cautioned residents to stay off the river due to high water levels.
Power outages were reported across Chicago and its suburbs, with over 14,000 ComEd customers without electricity as of Sunday morning. Temperatures in the region are expected to moderate into the 80s over the coming days, though thunderstorms may return later in the week, fueled in part by recent heat waves that have contributed to atmospheric instability.
Overall, the combination of heavy rain, fog, and localized flooding shaped a challenging environment for residents and visitors during the Independence Day celebrations in Chicago and its suburbs.