How dark is the sky in Cupertino, CA?

Cupertino's sky measures suburban here. Light dome dominates much of the sky. Only the brightest stars and planets stand out clearly. That's brighter than 66.6% of the 3,206 US 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.

Where to go for a darker sky near Cupertino

The closest place in this dataset with a meaningfully darker sky is Saratoga, CA, roughly 4 miles away in a straight line, rated rural. Road distance will be more.

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

Cupertino against the rest of the dataset

Cupertino, CA counts roughly 58,710 residents, among the 3,206 US cities this site tracks. Among all 3,206 cities here, Cupertino ranks 2,125 from darkest to brightest, 1 being the darkest measured.