Saratoga, CA: how dark is the sky here?
Saratoga reads as rural on this dataset's scale. Little local light dome. Most stars are visible; the Milky Way is faint but often findable away from town lights. That's brighter than 10% 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 Saratoga is from a meaningfully darker sky
The closest place in this dataset with a meaningfully darker sky is Avenal, CA, roughly 136 miles away in a straight line, rated dark sky. Road distance will be more.
Avenal, 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 Saratoga compares nationally
Saratoga, CA has a population of about 30,486, one of 3,206 US cities of 10,000 or more residents in this dataset. Saratoga places 321 of 3,206 cities in this dataset's darkest-to-brightest order.