Cicada Broods 2024 Illinois. The university of illinois extension recently provided an update. The event jonathan larson, an extension entomologist at the university of kentucky, is referring to is the simultaneous emergence of two cicada broods that will erupt in states from virginia to illinois come late april through june.

Illinois is the center of the cicada emergence in the united states, the only state that will experience cicadas nearly everywhere and see two adjacent broods — brood xix, or the great. When will cicadas emerge in 2024?