Norwalk, IA Night Sky Brightness
Norwalk, IA's night sky, measured from orbit
Satellite radiance puts Norwalk in the rural band. Little local light dome. Most stars are visible; the Milky Way is faint but often findable away from town lights. That's brighter than 6.8% of the 3,206 US 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, explained in the Bortle scale guide.
Where to go for a darker sky near Norwalk
Red Wing, MN, about 221 miles away as the crow flies, measures in the dark sky band, one step darker than Norwalk. Actual driving distance will run longer than that straight-line figure.
Red Wing, MN is itself still a measured city, not a designated dark-sky park, this only compares against the 3,206 places this dataset covers.
How Norwalk compares nationally
Norwalk, IA has a population of about 15,396, one of 3,206 US cities of 10,000 or more residents in this dataset. Norwalk's position, 219 of 3,206, darkest to brightest, comes from the sampling method the methodology guide sets out.