How dark is the sky in Sedro-Woolley, WA?

Sedro-Woolley 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. Sedro-Woolley's sky is brighter than 18.7% 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.

How far Sedro-Woolley is from a meaningfully darker sky

The closest place in this dataset with a meaningfully darker sky is Anacortes, WA, roughly 18 miles away in a straight line, rated rural. Road distance will be more.

Anacortes, WA is itself still a measured city, not a designated dark-sky park, this only compares against the 3,206 places this dataset covers.

Sedro-Woolley against the rest of the dataset

Sedro-Woolley, WA counts roughly 13,215 residents, among the 3,206 US cities this site tracks. Among all 3,206 cities here, Sedro-Woolley ranks 597 from darkest to brightest, 1 being the darkest measured.