Sheridan, WY's night sky, measured from orbit

Sheridan's sky measures suburban edge here. A noticeable glow near the horizon. Brighter stars and constellations are easy to pick out; the Milky Way is washed out. Only 28.6% of the 3,206 cities measured here read darker than Sheridan.

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

How far Sheridan is from a meaningfully darker sky

Spearfish, SD, about 156 miles away as the crow flies, measures in the rural band, one step darker than Sheridan. Actual driving distance will run longer than that straight-line figure.

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

How Sheridan compares nationally

About 19,813 people live in Sheridan, WY, sized enough to appear in this dataset of 3,206 incorporated US cities. Sheridan places 915 of 3,206 cities in this dataset's darkest-to-brightest order.