Rohnert Park, CA Night Sky Brightness
How dark is the sky in Rohnert Park, CA?
Rohnert Park's sky measures suburban edge here. A noticeable glow near the horizon. Brighter stars and constellations are easy to pick out; the Milky Way is washed out. Only 38.7% of the 3,206 cities measured here read darker than Rohnert Park.
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, covered fully in the Bortle scale guide.
How far Rohnert Park is from a meaningfully darker sky
San Anselmo, CA, about 26 miles away as the crow flies, measures in the rural band, one step darker than Rohnert Park. Actual driving distance will run longer than that straight-line figure.
San Anselmo, CA is itself still a measured city, not a designated dark-sky park, this only compares against the 3,206 places this dataset covers.
Rohnert Park against the rest of the dataset
About 44,894 people live in Rohnert Park, CA, sized enough to appear in this dataset of 3,206 incorporated US cities. Ranked against the other 3,206 cities here by the methodology guide's own sampling, Rohnert Park comes in at 1,234, darkest to brightest.