Rocklin, CA Night Sky Brightness
Rocklin, CA's night sky, measured from orbit
Satellite radiance puts Rocklin 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. Rocklin's sky is brighter than 22.4% of the 3,206 cities in this dataset.
Note the source: a satellite reading of upward light, not a visual Bortle scale reading. The two measure related but different things, explained in the Bortle scale guide.
The nearest darker sky to Rocklin
16 miles from Rocklin, straight-line, sits Rancho Cordova, CA, the nearest city here with a darker sky than Rocklin's own suburban edge band.
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.
How Rocklin compares nationally
Rocklin, CA has a population of about 75,129, one of 3,206 US cities of 10,000 or more residents in this dataset. Rocklin's position, 715 of 3,206, darkest to brightest, comes from the sampling method the methodology guide sets out.