Attleboro, MA: how dark is the sky here?
Attleboro reads as suburban edge on this dataset's scale. A noticeable glow near the horizon. Brighter stars and constellations are easy to pick out; the Milky Way is washed out. Only 31.4% of the 3,206 cities measured here read darker than Attleboro.
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.
How far Attleboro is from a meaningfully darker sky
15 miles from Attleboro, straight-line, sits Cranston, RI, the nearest city here with a darker sky than Attleboro's own suburban edge band.
Cranston, RI is itself still a measured city, not a designated dark-sky park, this only compares against the 3,206 places this dataset covers.
How Attleboro compares nationally
Attleboro, MA has a population of about 47,085, one of 3,206 US cities of 10,000 or more residents in this dataset. Attleboro places 1,002 of 3,206 cities in this dataset's darkest-to-brightest order.