The Air and Water Show is the largest free show of its kind, bringing an estimated one million people to the lakefront.
The show featured the Air Force Thunderbirds, The Army Golden Nights, and The Navy Leap Frogs, and more.
Rhymefest opened the show Saturday at 10 a.m. with the Army Golden Knights.
Fallen members of the police and fire departments were honored with a special flag and baton presentation by the Golden Knights.
The show featured military and civilian aerobatics, simulated water rescues, and parachute teams.
"There are so many wonderful acts that come out this year, Sean Tucker, which is one of my favorites, this is his last year as a solo pilot, so I encourage everyone to come down and see his act," said Mary May with the Chicago Department of Cultural Affairs and Special Events.
Public transportation has extra service to help accommodate people heading to the lakefront this weekend.
At Theater on the Lake, 2401 N. Lake Shore Dr, held viewing party for the show.
The Chicago Air and Water Show will get underway again on Sunday at 10 a.m. and will again be livestreamed on ABC7Chicago.com.