Hillsboro, OR Night Sky Brightness
How dark is the sky in Hillsboro, OR?
Hillsboro's sky measures suburban here. Light dome dominates much of the sky. Only the brightest stars and planets stand out clearly. Only 46% of the 3,206 cities measured here read darker than Hillsboro.
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.
Where to go for a darker sky near Hillsboro
6 miles from Hillsboro, straight-line, sits Cornelius, OR, the nearest city here with a darker sky than Hillsboro's own suburban band.
Cornelius, OR is itself still a measured city, not a designated dark-sky park, this only compares against the 3,206 places this dataset covers.
Hillsboro against the rest of the dataset
Hillsboro, OR counts roughly 110,337 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, Hillsboro comes in at 1,467, darkest to brightest.