DarkSkyCheck

Juneau, AK Night Sky Brightness (Reading Flagged)

Juneau's reading looks wrong, and this site says so rather than hide it

Reading flagged
Not shown

The radiance figure on file for Juneau is exactly 0.0, and a city of 31,572 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 "Juneau'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 Juneau

Wasilla, AK is about 571 miles from Juneau and has a trustworthy reading: suburban edge band. It's the closest usable stand-in until Juneau's own figure is corrected.

Because Juneau's own coordinate is what produced the bad reading, that distance figure is itself approximate, not a confirmed measurement.

Juneau against the rest of the dataset

Juneau, AK has a population of about 31,572, 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.