Outdoor Lighting in Chicago, IL (2026)
5 verified outdoor lighting rules for Chicago, Illinois, sourced directly from the municipal code and official government pages.
Verified from official government sources
Dark Sky Rules
Chicago does not have a dedicated dark sky ordinance. Outdoor lighting is addressed through building codes, zoning requirements, and nuisance provisions, but there are no specific regulations targeting light pollution or requiring dark-sky-compliant fixtures.
Chicago Dark Sky Regulations
Few RestrictionsLight Trespass
Chicago does not have a specific light trespass ordinance. Excessive lighting from commercial or residential properties that creates a nuisance may be addressed through general nuisance provisions in the Municipal Code.
Chicago Light Trespass Regulations
Few RestrictionsBillboard Lighting
Chicago billboards must follow the Illinois Highway Advertising Control Act and MCC sign code lighting rules. Maximum luminance must not exceed 0.3 foot-candles above ambient at 250 feet, and digital displays must meet automatic-dimming requirements.
Billboard Lighting Limited to State Brightness Standards
Some RestrictionsSecurity Light Shielding
Chicago Energy Code and zoning rules require exterior security and parking-lot lights to use full-cutoff fixtures aimed downward. Light cannot trespass past the property line or shine into neighbors' windows, and Lakefront and bird-collision rules add further controls.
Exterior Security Lights Must Be Shielded and Aimed Down
Some RestrictionsHoliday Lighting Rules
Chicago grants a seasonal exemption for temporary holiday and decorative lighting installed roughly between November and January. Permanent decorative lighting and large commercial displays still must follow energy code, sign code, and light-trespass rules.
Seasonal Holiday Lighting Largely Exempt from Lighting Rules
Few RestrictionsLooking for Cook County county-wide rules?
County ordinances apply to unincorporated areas and may supplement Chicago city rules.
Outdoor Lighting in Cook County →