Brookfield, IL Night Sky Brightness
Brookfield, IL's night sky, measured from orbit
Satellite radiance puts Brookfield in the suburban band. Light dome dominates much of the sky. Only the brightest stars and planets stand out clearly. That's brighter than 66.4% of the 3,206 US cities in this dataset.
Note the source: a satellite reading of upward light, not a visual Bortle scale reading. The two measure related but different things, explained in the Bortle scale guide.
Where to go for a darker sky near Brookfield
5 miles from Brookfield, straight-line, sits Justice, IL, the nearest city here with a darker sky than Brookfield's own suburban band.
Justice, IL is itself still a measured city, not a designated dark-sky park, this only compares against the 3,206 places this dataset covers.
How Brookfield compares nationally
Brookfield, IL counts roughly 18,885 residents, among the 3,206 US cities this site tracks. Brookfield's position, 2,118 of 3,206, darkest to brightest, comes from the sampling method the methodology guide sets out.