IL HB5474

All new outdoor luminaires purchased or installed after June 30, 2032 must have a correlated color temperature of 2,700 Kelvin or less to reduce light pollution

Uplighting for statues and historical façades is permitted as an exception when no other solution is viable, but must use color temperature no more than 2,700 Kelvin, stay within 25% of ANSI/IES standards, and be turned off by midnight each night

New or replacement uplighting for State historic statuary and historical façade lighting requires approval from the State Historic Preservation Office starting January 1, 2027

Removes the previous requirement that façade lighting must project downward, and eliminates the stricter 2,200 Kelvin limit for residential areas, dark sky locations, and environmentally sensitive areas like State parks

Removes the prohibition on artificial lighting above one lux trespassing onto designated habitat, reserve, natural area, open space, or wilderness lands and waterways