How dark is the sky in Brownsville, TX?
Satellite radiance puts Brownsville in the suburban band. Light dome dominates much of the sky. Only the brightest stars and planets stand out clearly. That's brighter than 46.3% of the 3,206 US 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.
Where to go for a darker sky near Brownsville
The closest place in this dataset with a meaningfully darker sky is Raymondville, TX, roughly 38 miles away in a straight line, rated suburban edge. Road distance will be more.
Raymondville, TX is itself still a measured city, not a designated dark-sky park, this only compares against the 3,206 places this dataset covers.
Brownsville against the rest of the dataset
About 191,967 people live in Brownsville, TX, sized enough to appear in this dataset of 3,206 incorporated US cities. Among all 3,206 cities here, Brownsville ranks 1,477 from darkest to brightest, 1 being the darkest measured.