2 rules for unincorporated Weld County, Colorado.
Verified from official government sources
Weld County has no formal dark-sky ordinance, but the Agricultural-zone bulk requirements mandate that outdoor light sources be shielded so beams or rays do not shine directly onto adjacent properties, and that light never creates a traffic hazard on public or private roads.
Weld County Code § 23-3-70(F)
Sources of light shall be shielded so that beams or rays of light will not shine directly onto ADJACENT properties. Neither the direct nor reflected light from any light source may create a traffic hazard to operators of motor vehicles on PUBLIC or private STREETS/ROADS.
Weld County addresses light trespass through its zoning code: outdoor light sources must be shielded so beams do not shine directly onto adjacent properties, and sign lighting may not spill more than 0.3 footcandles above ambient light onto any adjoining lot or right-of-way.
Weld County Code § 23-4-70(B)(3)
Light sources shall be directed and shielded such that SIGNS do not create light spillover of greater than three-tenths (0.3) footcandles in excess of ambient lighting conditions onto any adjoining LOT or RIGHT-OF-WAY.
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