IL SB3964

All new outdoor luminaires purchased or installed after June 30, 2032 must have a correlated color temperature of 2,700 Kelvin or less, amending the Responsible Outdoor Lighting Control Act

Creates an exception allowing uplighting for statuary and historical façade lighting when it is the only viable solution, with requirements including color temperature no more than 2,700 Kelvin and lights extinguished by midnight

After January 1, 2027, any new placement or replacement of uplighting for State historic statuary and façade lighting requires approval from the State Historic Preservation Office

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

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