What the night sky looks like over Chula Vista, CA
Chula Vista reads as suburban edge on this dataset's scale. A noticeable glow near the horizon. Brighter stars and constellations are easy to pick out; the Milky Way is washed out. That's brighter than 25.2% of the 3,206 US cities in this dataset.
The number comes from orbit, not a stargazer's logbook, so treat it as an estimate of sky glow rather than a certified Bortle class.
The nearest darker sky to Chula Vista
The closest place in this dataset with a meaningfully darker sky is Imperial Beach, CA, roughly 7 miles away in a straight line, rated rural. Road distance will be more.
Imperial Beach, CA is itself still a measured city, not a designated dark-sky park, this only compares against the 3,206 places this dataset covers.
Chula Vista against the rest of the dataset
Chula Vista, CA has a population of about 278,546, one of 3,206 US cities of 10,000 or more residents in this dataset. Among all 3,206 cities here, Chula Vista ranks 805 from darkest to brightest, 1 being the darkest measured.