Guttenberg, NJ Night Sky Brightness
How dark is the sky in Guttenberg, NJ?
Satellite radiance puts Guttenberg in the urban band. Sky glow overhead most nights. Typically only planets, the Moon, and a handful of the brightest stars are visible. That's brighter than 98.1% of the 3,206 US cities in this dataset.
Worth remembering: this is satellite radiance, not a ground observation. A true Bortle rating needs a human eye at night, this is the closest large-scale substitute, covered fully in the Bortle scale guide.
The nearest darker sky to Guttenberg
3 miles from Guttenberg, straight-line, sits Edgewater, NJ, the nearest city here with a darker sky than Guttenberg's own urban band.
Edgewater, NJ is itself still a measured city, not a designated dark-sky park, this only compares against the 3,206 places this dataset covers.
Guttenberg against the rest of the dataset
Guttenberg, NJ has a population of about 11,945, one of 3,206 US cities of 10,000 or more residents in this dataset. Ranked against the other 3,206 cities here by the methodology guide's own sampling, Guttenberg comes in at 3,127, darkest to brightest.