Marlborough, MA Night Sky Brightness
Marlborough, MA: how dark is the sky here?
Marlborough reads as suburban on this dataset's scale. Light dome dominates much of the sky. Only the brightest stars and planets stand out clearly. That's brighter than 47.6% of the 3,206 US cities in this dataset.
This comes from a satellite measuring light radiating upward, not a person's eyes on the ground, so it isn't the same as a Bortle class, though the two track each other closely - see the Bortle scale guide for where they can disagree.
The nearest darker sky to Marlborough
6 miles from Marlborough, straight-line, sits Framingham, MA, the nearest city here with a darker sky than Marlborough's own suburban band.
Framingham, MA is itself still a measured city, not a designated dark-sky park, this only compares against the 3,206 places this dataset covers.
How Marlborough compares nationally
Marlborough, MA counts roughly 42,169 residents, among the 3,206 US cities this site tracks. Marlborough places 1,519 of 3,206 cities in this dataset's darkest-to-brightest order, ranked by the method in the methodology guide.