Lehi, UT Outdoor Lighting: Dark Sky Rules (2026)

110 states its purpose up front: curtail light pollution, reduce skyglow, protect the nighttime environment for astronomy and wildlife, and conserve energy, while still allowing enough light for safety. 1 requires all new and replacement outdoor lighting to be fully shielded and installed so that light is directed downward with the area of direct illumination contained on site. Pole height is capped separately: on tracts over three acres the maximum is 30 feet, and on tracts under three acres it drops to 20 feet, though a lot between one and three acres can reach 30 feet if it sits at least 300 feet from any residentially zoned property, borders an arterial or state road, and uses new precision luminaires with flat lenses and a submitted photometric design.

or within one hour after a business closes, whichever is later, with exceptions for residential uses, building-entrance lighting, safety lighting of parking lots and pedestrian areas, and lighting necessary for after-hours businesses. 6 bans blue-rich, high-temperature LED lighting and requires warm, long-wavelength lighting with a color temperature of 3,000 Kelvin or less.