How dark is the sky in Pleasanton, CA?

Pleasanton'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 41% of the 3,206 cities measured here read darker than Pleasanton.

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.

How far Pleasanton is from a meaningfully darker sky

San Ramon, CA, about 7 miles away as the crow flies, measures in the rural band, one step darker than Pleasanton. Actual driving distance will run longer than that straight-line figure.

San Ramon, CA is itself still a measured city, not a designated dark-sky park, this only compares against the 3,206 places this dataset covers.

Pleasanton against the rest of the dataset

Pleasanton, CA has a population of about 75,664, one of 3,206 US cities of 10,000 or more residents in this dataset. Among all 3,206 cities here, Pleasanton ranks 1,307 from darkest to brightest, 1 being the darkest measured.