Mount Prospect, IL Night Sky Brightness
What the night sky looks like over Mount Prospect, IL
Mount Prospect's sky measures suburban here. Light dome dominates much of the sky. Only the brightest stars and planets stand out clearly. Mount Prospect's sky is brighter than 74% of the 3,206 cities in this dataset.
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 Bortle scale guide covers why.
Where to go for a darker sky near Mount Prospect
The closest place in this dataset with a meaningfully darker sky is Prospect Heights, IL, roughly 3 miles away in a straight line, rated suburban edge. Road distance will be more.
Prospect Heights, IL is itself still a measured city, not a designated dark-sky park, this only compares against the 3,206 places this dataset covers.
Mount Prospect against the rest of the dataset
Mount Prospect, IL has a population of about 55,460, one of 3,206 US cities of 10,000 or more residents in this dataset. Among all 3,206 cities here, Mount Prospect ranks 2,358 from darkest to brightest, 1 being the darkest measured, by the sampling the methodology guide documents.