Rapid City, SD Night Sky Brightness
What the night sky looks like over Rapid City, SD
Rapid City's sky measures suburban here. Light dome dominates much of the sky. Only the brightest stars and planets stand out clearly. Rapid City's sky is brighter than 59% of the 3,206 cities in this dataset.
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 - the Bortle scale guide covers why.
Where to go for a darker sky near Rapid City
7 miles from Rapid City, straight-line, sits Box Elder, SD, the nearest city here with a darker sky than Rapid City's own suburban band.
Box Elder, SD is itself still a measured city, not a designated dark-sky park, this only compares against the 3,206 places this dataset covers.
Rapid City against the rest of the dataset
Rapid City, SD has a population of about 79,894, one of 3,206 US cities of 10,000 or more residents in this dataset. Among all 3,206 cities here, Rapid City ranks 1,880 from darkest to brightest, 1 being the darkest measured, by the sampling the methodology guide documents.