Green River, WY's night sky, measured from orbit

Green River reads as suburban edge on this dataset's scale. A noticeable glow near the horizon. Brighter stars and constellations are easy to pick out; the Milky Way is washed out. Only 30.7% of the 3,206 cities measured here read darker than Green River.

Note the source: a satellite reading of upward light, not a visual Bortle scale reading. The two measure related but different things.

How far Green River is from a meaningfully darker sky

Heber, UT, about 120 miles away as the crow flies, measures in the dark sky band, one step darker than Green River. Actual driving distance will run longer than that straight-line figure.

Heber, UT is itself still a measured city, not a designated dark-sky park, this only compares against the 3,206 places this dataset covers.

How Green River compares nationally

Green River, WY has a population of about 11,474, one of 3,206 US cities of 10,000 or more residents in this dataset. Green River places 980 of 3,206 cities in this dataset's darkest-to-brightest order.