Local rules only
Illinois
Last checked 2026-09-23
Illinois requires new or substantially renovated state buildings to reduce nighttime exterior and interior-visible lighting, mainly to cut bird collisions rather than to control general light pollution. There is no statewide restriction on private or municipal outdoor lighting.
| Statute | Citation | Year |
|---|---|---|
| Bird-Safe Buildings Act, state building lighting | 20 ILCS 405/405-317 | 2021 |