Forest Grove, OR: how dark is the sky here?
Forest Grove reads as suburban on this dataset's scale. Light dome dominates much of the sky. Only the brightest stars and planets stand out clearly. Forest Grove's sky is brighter than 50.3% of the 3,206 cities in this dataset.
This comes from a satellite measuring light radiating upward, not a person's eyes on the ground, so it isn't the same as a Bortle class, though the two track each other closely.
Where to go for a darker sky near Forest Grove
3 miles from Forest Grove, straight-line, sits Cornelius, OR, the nearest city here with a darker sky than Forest Grove'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.
How Forest Grove compares nationally
Forest Grove, OR has a population of about 27,076, one of 3,206 US cities of 10,000 or more residents in this dataset. Forest Grove places 1,603 of 3,206 cities in this dataset's darkest-to-brightest order.