What the night sky looks like over Lone Tree, CO

Lone Tree reads as urban on this dataset's scale. Sky glow overhead most nights. Typically only planets, the Moon, and a handful of the brightest stars are visible. Only 91% of the 3,206 cities measured here read darker than Lone Tree.

The number comes from orbit, not a stargazer's logbook, so treat it as an estimate of sky glow rather than a certified Bortle class.

How far Lone Tree is from a meaningfully darker sky

The closest place in this dataset with a meaningfully darker sky is Castle Pines, CO, roughly 5 miles away in a straight line, rated suburban edge. Road distance will be more.

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

Lone Tree against the rest of the dataset

Lone Tree, CO counts roughly 14,061 residents, among the 3,206 US cities this site tracks. Among all 3,206 cities here, Lone Tree ranks 2,902 from darkest to brightest, 1 being the darkest measured.