Norristown, PA's night sky, measured from orbit

Satellite radiance puts Norristown in the urban band. Sky glow overhead most nights. Typically only planets, the Moon, and a handful of the brightest stars are visible. Only 85.6% of the 3,206 cities measured here read darker than Norristown.

Note the source: a satellite reading of upward light, not a visual Bortle scale reading. The two measure related but different things.

Where to go for a darker sky near Norristown

9 miles from Norristown, straight-line, sits Lansdale, PA, the nearest city here with a darker sky than Norristown's own urban band.

Lansdale, PA is itself still a measured city, not a designated dark-sky park, this only compares against the 3,206 places this dataset covers.

How Norristown compares nationally

About 36,075 people live in Norristown, PA, sized enough to appear in this dataset of 3,206 incorporated US cities. Norristown places 2,729 of 3,206 cities in this dataset's darkest-to-brightest order.