The annual lighting ceremony will be closed to the public. But you can watch the tree lighting on the city's YouTube Channel at 6:30 p.m.
Starting Friday, groups of 10 or less can view the tree in person at the intersection of Michigan and Washington Street through the holiday season. The tree will stay lit through the first week in January.
RELATED: Chicago's official Christmas tree selected as retired Morgan Park CPS teacher donates spruce
This year's tree is a 45-foot spruce donated by Catherine Townsend, a retired CPS teacher from the Morgan Park neighborhood. It is the first time the tree in Millennium Park has come from the city.