How dark is the sky in San Carlos, CA?

San Carlos'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. San Carlos's sky is brighter than 15.3% 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.

The nearest darker sky to San Carlos

The closest place in this dataset with a meaningfully darker sky is Redwood City, CA, roughly 3 miles away in a straight line, rated rural. Road distance will be more.

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

San Carlos against the rest of the dataset

About 29,403 people live in San Carlos, CA, sized enough to appear in this dataset of 3,206 incorporated US cities. Among all 3,206 cities here, San Carlos ranks 488 from darkest to brightest, 1 being the darkest measured.