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.

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. Among all 3,206 cities here, Belvidere ranks 159 from darkest to brightest, 1 being the darkest measured.