Sumner, WA: how dark is the sky here?

Satellite radiance puts Sumner in the urban band. Sky glow overhead most nights. Typically only planets, the Moon, and a handful of the brightest stars are visible. Sumner's sky is brighter than 89.4% 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.

How far Sumner is from a meaningfully darker sky

2 miles from Sumner, straight-line, sits Edgewood, WA, the nearest city here with a darker sky than Sumner's own urban band.

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

How Sumner compares nationally

Sumner, WA has a population of about 10,885, one of 3,206 US cities of 10,000 or more residents in this dataset. Sumner places 2,849 of 3,206 cities in this dataset's darkest-to-brightest order.