Louisville/Jefferson County, KY's night sky, measured from orbit

Louisville/Jefferson County reads as suburban on this dataset's scale. Light dome dominates much of the sky. Only the brightest stars and planets stand out clearly. Only 73.8% of the 3,206 cities measured here read darker than Louisville/Jefferson County.

Note the source: a satellite reading of upward light, not a visual Bortle scale reading. The two measure related but different things.

How far Louisville/Jefferson County is from a meaningfully darker sky

Mount Washington, KY, about 10 miles away as the crow flies, measures in the suburban edge band, one step darker than Louisville/Jefferson County. Actual driving distance will run longer than that straight-line figure.

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

How Louisville/Jefferson County compares nationally

Louisville/Jefferson County, KY has a population of about 640,796, one of 3,206 US cities of 10,000 or more residents in this dataset. Louisville/Jefferson County places 2,352 of 3,206 cities in this dataset's darkest-to-brightest order.