What the night sky looks like over Downers Grove, IL

Downers Grove reads as suburban edge on this dataset's scale. A noticeable glow near the horizon. Brighter stars and constellations are easy to pick out; the Milky Way is washed out. Only 28.5% of the 3,206 cities measured here read darker than Downers Grove.

The number comes from orbit, not a stargazer's logbook, so treat it as an estimate of sky glow rather than a certified Bortle class.

The nearest darker sky to Downers Grove

The closest place in this dataset with a meaningfully darker sky is Bartlett, IL, roughly 14 miles away in a straight line, rated rural. Road distance will be more.

Bartlett, IL is itself still a measured city, not a designated dark-sky park, this only compares against the 3,206 places this dataset covers.

Downers Grove against the rest of the dataset

About 50,552 people live in Downers Grove, IL, sized enough to appear in this dataset of 3,206 incorporated US cities. Among all 3,206 cities here, Downers Grove ranks 909 from darkest to brightest, 1 being the darkest measured.