Lewiston, ID's night sky, measured from orbit
Satellite radiance puts Lewiston in the suburban band. Light dome dominates much of the sky. Only the brightest stars and planets stand out clearly. Lewiston's sky is brighter than 49.7% of the 3,206 cities in this dataset.
Note the source: a satellite reading of upward light, not a visual Bortle scale reading. The two measure related but different things.
The nearest darker sky to Lewiston
Post Falls, ID, about 92 miles away as the crow flies, measures in the suburban edge band, one step darker than Lewiston. Actual driving distance will run longer than that straight-line figure.
Post Falls, ID is itself still a measured city, not a designated dark-sky park, this only compares against the 3,206 places this dataset covers.
How Lewiston compares nationally
Lewiston, ID has a population of about 34,693, one of 3,206 US cities of 10,000 or more residents in this dataset. Lewiston places 1,587 of 3,206 cities in this dataset's darkest-to-brightest order.