How dark is the sky in Hilton Head Island, SC?

Hilton Head Island's sky measures rural here. Little local light dome. Most stars are visible; the Milky Way is faint but often findable away from town lights. Only 4% of the 3,206 cities measured here read darker than Hilton Head Island.

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.

The nearest darker sky to Hilton Head Island

The closest place in this dataset with a meaningfully darker sky is Bluffton, SC, roughly 11 miles away in a straight line, rated dark sky. Road distance will be more.

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

Hilton Head Island against the rest of the dataset

Hilton Head Island, SC has a population of about 38,158, one of 3,206 US cities of 10,000 or more residents in this dataset. Among all 3,206 cities here, Hilton Head Island ranks 130 from darkest to brightest, 1 being the darkest measured.