Vallejo, CA Night Sky Brightness
How dark is the sky in Vallejo, CA?
Vallejo reads as suburban on this dataset's scale. Light dome dominates much of the sky. Only the brightest stars and planets stand out clearly. Vallejo's sky is brighter than 48.6% 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, covered fully in the Bortle scale guide.
Where to go for a darker sky near Vallejo
The closest place in this dataset with a meaningfully darker sky is American Canyon, CA, roughly 5 miles away in a straight line, rated suburban edge. Road distance will be more.
American Canyon, CA is itself still a measured city, not a designated dark-sky park, this only compares against the 3,206 places this dataset covers.
Vallejo against the rest of the dataset
About 123,475 people live in Vallejo, CA, sized enough to appear in this dataset of 3,206 incorporated US cities. Ranked against the other 3,206 cities here by the methodology guide's own sampling, Vallejo comes in at 1,551, darkest to brightest.