The shooting happened around 6:06 p.m. in the 1000 block of North Kedzie Avenue, Chicago police said. The Puerto Rican Fest was scheduled from noon to 10 p.m. at Humboldt Park, which is located a block away at 2800 W. Division St., according to the event's website.
A 17-year-old boy was inside a vehicle at the location when he suffered a graze wound to the face, Chicago police said. He was taken to a hospital in good condition.
It was not immediately known if the shooting affected the nearby festival.
No one was in custody. Chicago police continue to investigate.
Authorities did not immediately provide further details about the shooting.
INTERACTIVE SAFETY TRACKER Track crime and safety in your neighborhood
SEE ALSO | Puerto Rican People's Parade held in Chicago's Humboldt Park neighborhood