What the night sky looks like over Norman, OK
Norman reads as rural on this dataset's scale. Little local light dome. Most stars are visible; the Milky Way is faint but often findable away from town lights. Norman's sky is brighter than 2.5% of the 3,206 cities in this dataset.
The number comes from orbit, not a stargazer's logbook, so treat it as an estimate of sky glow rather than a certified Bortle class.
How far Norman is from a meaningfully darker sky
Godfrey, IL, about 469 miles away as the crow flies, measures in the dark sky band, one step darker than Norman. Actual driving distance will run longer than that straight-line figure.
Godfrey, IL is itself still a measured city, not a designated dark-sky park, this only compares against the 3,206 places this dataset covers.
Norman against the rest of the dataset
Norman, OK has a population of about 131,010, one of 3,206 US cities of 10,000 or more residents in this dataset. Among all 3,206 cities here, Norman ranks 82 from darkest to brightest, 1 being the darkest measured.