What the night sky looks like over Roseville, CA
Satellite radiance puts Roseville in the suburban edge band. A noticeable glow near the horizon. Brighter stars and constellations are easy to pick out; the Milky Way is washed out. That's brighter than 30.9% of the 3,206 US 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 Roseville is from a meaningfully darker sky
Rancho Cordova, CA, about 14 miles away as the crow flies, measures in the rural band, one step darker than Roseville. Actual driving distance will run longer than that straight-line figure.
Rancho Cordova, CA is itself still a measured city, not a designated dark-sky park, this only compares against the 3,206 places this dataset covers.
Roseville against the rest of the dataset
About 163,304 people live in Roseville, CA, sized enough to appear in this dataset of 3,206 incorporated US cities. Among all 3,206 cities here, Roseville ranks 986 from darkest to brightest, 1 being the darkest measured.