Bluffton, SC: how dark is the sky here?

Bluffton's sky measures dark sky here. Among the darkest skies of any US city in this dataset. The Milky Way should be visible overhead on clear, moonless nights. That's brighter than 0.4% 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.

Bluffton is already about as dark as this dataset gets

Nothing in this dataset's 3,206 US cities measures a darker sky than Bluffton. That doesn't mean nowhere is darker, unincorporated land and wilderness aren't part of this dataset at all, only incorporated cities of 10,000 people or more.

How Bluffton compares nationally

Bluffton, SC counts roughly 36,146 residents, among the 3,206 US cities this site tracks. Bluffton places 14 of 3,206 cities in this dataset's darkest-to-brightest order.