How dark is the sky in Gurnee, IL?

Gurnee 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. Gurnee's sky is brighter than 96.6% 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.

The nearest darker sky to Gurnee

The closest place in this dataset with a meaningfully darker sky is Waukegan, IL, roughly 3 miles away in a straight line, rated suburban. Road distance will be more.

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

Gurnee against the rest of the dataset

Gurnee, IL has a population of about 30,546, one of 3,206 US cities of 10,000 or more residents in this dataset. Among all 3,206 cities here, Gurnee ranks 3,081 from darkest to brightest, 1 being the darkest measured.