Campbell, CA: how dark is the sky here?

Satellite radiance puts Campbell in the suburban band. Light dome dominates much of the sky. Only the brightest stars and planets stand out clearly. That's brighter than 51.9% of the 3,206 US cities in this dataset.

This comes from a satellite measuring light radiating upward, not a person's eyes on the ground, so it isn't the same as a Bortle class, though the two track each other closely.

How far Campbell is from a meaningfully darker sky

Los Gatos, CA, about 3 miles away as the crow flies, measures in the suburban edge band, one step darker than Campbell. Actual driving distance will run longer than that straight-line figure.

Los Gatos, 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 Campbell compares nationally

Campbell, CA has a population of about 42,895, one of 3,206 US cities of 10,000 or more residents in this dataset. Campbell places 1,654 of 3,206 cities in this dataset's darkest-to-brightest order.