Sioux Falls, SD: how dark is the sky here?

Sioux Falls reads as urban on this dataset's scale. Sky glow overhead most nights. Typically only planets, the Moon, and a handful of the brightest stars are visible. That's brighter than 94.9% of the 3,206 US 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 Sioux Falls is from a meaningfully darker sky

The closest place in this dataset with a meaningfully darker sky is Harrisburg, SD, roughly 7 miles away in a straight line, rated suburban. Road distance will be more.

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

How Sioux Falls compares nationally

About 209,289 people live in Sioux Falls, SD, sized enough to appear in this dataset of 3,206 incorporated US cities. Sioux Falls places 3,027 of 3,206 cities in this dataset's darkest-to-brightest order.