Cicadas 2024 Chicago Area. These cicadas are harmless to humans and pets—they cannot sting, bite, or pinch—but there will be many millions of them. About six to 10 weeks after they are laid, the eggs will begin to hatch.

For the chicago area, brood xiii will be most seen in parts of northern illinois and indiana, and possibly even in wisconsin and ohio, in late may 2024, dr. But where can you expect them most?