Overview
- Heavy overnight rain and National Weather Service flood advisories on Saturday forced organizers to push back doors to midafternoon and overhaul the day's schedule.
- Most acts scheduled inside the delayed window were canceled and several later performances were shortened, with K-pop group Cortis and rock band Wolf Alice given reduced set times.
- Crews worked to pump and clean flooded areas of Hutchinson Field while the City of Chicago and festival promoters opened evacuation shelters and increased on-site medical and harm-reduction resources, including fentanyl education and free Narcan.
- Organizers' changing announcements produced conflicting reports about artist availability, highlighted by an initial cancellation notice for Lil Uzi Vert that was later followed by reports of his surprise appearance.
- Many attendees still entered the muddy grounds wearing ponchos because umbrellas are banned, and festival officials urged fans to monitor official channels for updates since Sunday’s final-day schedule remains weather-dependent.