Happy Valley, OR Night Sky Brightness
How dark is the sky in Happy Valley, OR?
Happy Valley 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. Happy Valley's sky is brighter than 24.2% 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, covered fully in the Bortle scale guide.
The nearest darker sky to Happy Valley
9 miles from Happy Valley, straight-line, sits Lake Oswego, OR, the nearest city here with a darker sky than Happy Valley's own suburban edge band.
Lake Oswego, OR is itself still a measured city, not a designated dark-sky park, this only compares against the 3,206 places this dataset covers.
Happy Valley against the rest of the dataset
Happy Valley, OR has a population of about 28,969, one of 3,206 US cities of 10,000 or more residents in this dataset. Ranked against the other 3,206 cities here by the methodology guide's own sampling, Happy Valley comes in at 773, darkest to brightest.