Moraga, CA Night Sky Brightness
How dark is the sky in Moraga, CA?
Satellite radiance puts Moraga in the rural band. Little local light dome. Most stars are visible; the Milky Way is faint but often findable away from town lights. Moraga's sky is brighter than 5.9% of the 3,206 cities in this dataset.
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 Moraga is from a meaningfully darker sky
Truckee, CA, about 147 miles away as the crow flies, measures in the dark sky band, one step darker than Moraga. Actual driving distance will run longer than that straight-line figure.
Truckee, CA is itself still a measured city, not a designated dark-sky park, this only compares against the 3,206 places this dataset covers.
Moraga against the rest of the dataset
About 16,698 people live in Moraga, 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, Moraga comes in at 188, darkest to brightest.