Boulder City, NV Night Sky Brightness (Reading Flagged)
Boulder City's reading looks wrong, and this site says so rather than hide it
Boulder City's satellite reading came back at exactly zero, which is not a real measurement for a city of 15,029 people, it means the sample point most likely missed the lit part of town, landing on open water, a shadowed hillside, or just a bad coordinate. Real cities this size do not read true zero.
This is flagged instead of shown as a normal result because reporting it as "Boulder City's dark sky" would be reporting a data error as a fact, see the data quality guide for how this gets checked.
The nearest reliable reading to Boulder City
Henderson, NV is about 13 miles from Boulder City and has a trustworthy reading: suburban edge band. It's the closest usable stand-in until Boulder City's own figure is corrected.
Because Boulder City's own coordinate is what produced the bad reading, that distance figure is itself approximate, not a confirmed measurement.
Boulder City against the rest of the dataset
Boulder City, NV has a population of about 15,029, one of 3,206 US cities in this dataset, 3,187 of which have a usable brightness reading today.
The dataset and sampling method behind every one of those readings, flagged or not, are in the methodology guide.