Cicada 2024 Illinois. The simultaneous emergence is the first time. Now the great dual periodical cicada emergence of 2024 — an event of a magnitude not seen since 1803 — has burst from below to join the earlier shows in the sky.
This year (2024) is a big year for periodical cicadas in illinois, where broods xiii and xix will be emerging throughout much of the state at the same time. The simultaneous emergence is the first time.