How dark is the sky in Brookfield, WI?

Brookfield 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. That's brighter than 17.9% 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.

How far Brookfield is from a meaningfully darker sky

6 miles from Brookfield, straight-line, sits New Berlin, WI, the nearest city here with a darker sky than Brookfield's own suburban edge band.

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

Brookfield against the rest of the dataset

Brookfield, WI counts roughly 41,268 residents, among the 3,206 US cities this site tracks. Among all 3,206 cities here, Brookfield ranks 573 from darkest to brightest, 1 being the darkest measured.