Tualatin, OR Night Sky Brightness
What the night sky looks like over Tualatin, OR
Satellite radiance puts Tualatin in the suburban band. Light dome dominates much of the sky. Only the brightest stars and planets stand out clearly. Only 71.4% of the 3,206 cities measured here read darker than Tualatin.
The number comes from orbit, not a stargazer's logbook, so treat it as an estimate of sky glow rather than a certified Bortle class - the Bortle scale guide covers why.
How far Tualatin is from a meaningfully darker sky
Lake Oswego, OR, about 4 miles away as the crow flies, measures in the rural band, one step darker than Tualatin. Actual driving distance will run longer than that straight-line figure.
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.
Tualatin against the rest of the dataset
Tualatin, OR has a population of about 28,036, one of 3,206 US cities of 10,000 or more residents in this dataset. Among all 3,206 cities here, Tualatin ranks 2,278 from darkest to brightest, 1 being the darkest measured, by the sampling the methodology guide documents.