How dark is the sky in Chester, PA?
Chester's sky measures urban here. Sky glow overhead most nights. Typically only planets, the Moon, and a handful of the brightest stars are visible. That's brighter than 90.3% 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.
Where to go for a darker sky near Chester
The closest place in this dataset with a meaningfully darker sky is Darby, PA, roughly 8 miles away in a straight line, rated suburban. Road distance will be more.
Darby, PA is itself still a measured city, not a designated dark-sky park, this only compares against the 3,206 places this dataset covers.
Chester against the rest of the dataset
Chester, PA counts roughly 34,052 residents, among the 3,206 US cities this site tracks. Among all 3,206 cities here, Chester ranks 2,880 from darkest to brightest, 1 being the darkest measured.