Belvidere, IL Night Sky Brightness
How dark is the sky in Belvidere, IL?
Satellite radiance puts Belvidere in the rural band. Little local light dome. Most stars are visible; the Milky Way is faint but often findable away from town lights. Belvidere's sky is brighter than 5% of the 3,206 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.
How far Belvidere is from a meaningfully darker sky
44 miles from Belvidere, straight-line, sits Plano, IL, the nearest city here with a darker sky than Belvidere's own rural band.
Plano, IL is itself still a measured city, not a designated dark-sky park, this only compares against the 3,206 places this dataset covers.
Belvidere against the rest of the dataset
Belvidere, IL counts roughly 25,325 residents, among the 3,206 US cities this site tracks. Ranked against the other 3,206 cities here by the methodology guide's own sampling, Belvidere comes in at 159, darkest to brightest.