Grand Junction, CO Night Sky Brightness
What the night sky looks like over Grand Junction, CO
Satellite radiance puts Grand Junction in the suburban band. Light dome dominates much of the sky. Only the brightest stars and planets stand out clearly. Only 54.8% of the 3,206 cities measured here read darker than Grand Junction.
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.
The nearest darker sky to Grand Junction
53 miles from Grand Junction, straight-line, sits Rifle, CO, the nearest city here with a darker sky than Grand Junction's own suburban band.
Rifle, CO is itself still a measured city, not a designated dark-sky park, this only compares against the 3,206 places this dataset covers.
Grand Junction against the rest of the dataset
Grand Junction, CO has a population of about 70,554, one of 3,206 US cities of 10,000 or more residents in this dataset. Among all 3,206 cities here, Grand Junction ranks 1,748 from darkest to brightest, 1 being the darkest measured, by the sampling the methodology guide documents.