May.
28
In its 115th year, this community celebration in the central Illinois town of Farmersville along historic Route 66 honors the area's Irish immigrant heritage. Parades, live music, food, and community gatherings have marked the occasion for generations, making it one of the longest-running ethnic heritage festivals in the state.
Jun.
01
Presented annually by the Center for the Performing Arts at Illinois State University since 1978, this outdoor festival stages professional Shakespeare productions in a purpose-built open-air theater on the ISU campus. The season typically includes two or three productions running in repertory through the summer, with pre-show entertainment and family programming accompanying each performance.
Jun.
05
Just across the Mississippi River from St. Louis sits the heart of the region that produces approximately 60 percent of the world's horseradish supply. This annual festival celebrates that agricultural legacy with a horseradish recipe contest, root toss competition, live entertainment, food vendors, and craft booth.
Jun.
05
Running since 1984, this free four-day festival celebrates Chicago's deep roots in American blues music. The city's blues identity stretches back to the Great Migration era of the early 20th century, when musicians from the Mississippi Delta brought the blues north and transformed it into the electric Chicago style. The largest free blues festival in the world, it mixes established legends with emerging artists across multiple outdoor stages.
Jun.
13
Edwardsville celebrates its connection to America's most storied highway with this annual street festival featuring classic cars, live music, food vendors, and Route 66-themed exhibits. The event coincides with Route 66's centennial celebrations taking place across Illinois in 2026, marking 100 years since the highway was officially designated in 1926.
Jun.
19
Set against the rolling hills of Jo Daviess County in northwest Illinois, this three-day event features more than 20 hot air balloons competing in three races, including a Crack of Dawn race and the signature Nightglow extravaganza illuminating the balloons after dark. Live music, a juried art show, a classic car show, and family activities round out the weekend.
Jul.
02
This community festival has taken place since the 1930s, earning the city its nickname as the Petunia Capital of the World. The festival, located along the Rock River, features a parade, carnival rides, live entertainment, food vendors, and a pageant.