Eloy's reading looks wrong, and this site says so rather than hide it
The radiance figure on file for Eloy is exactly 0.0, and a city of 19,199 people does not genuinely read zero light from orbit. That points to a sampling miss, the wrong coordinate, water, or unlit terrain right where the sample point landed, rather than an actual dark sky.
This is flagged instead of shown as a normal result because reporting it as "Eloy'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 Eloy
Coolidge, AZ is about 14 miles from Eloy and has a trustworthy reading: dark sky band. It's the closest usable stand-in until Eloy's own figure is corrected.
Because Eloy's own coordinate is what produced the bad reading, that distance figure is itself approximate, not a confirmed measurement.
Eloy against the rest of the dataset
Eloy, AZ has a population of about 19,199, one of 3,206 US cities in this dataset, 3,187 of which have a usable brightness reading today.