Edwardsville, IL Night Sky Brightness
What the night sky looks like over Edwardsville, IL
Edwardsville reads as suburban on this dataset's scale. Light dome dominates much of the sky. Only the brightest stars and planets stand out clearly. Edwardsville's sky is brighter than 66.5% 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.
The nearest darker sky to Edwardsville
2 miles from Edwardsville, straight-line, sits Glen Carbon, IL, the nearest city here with a darker sky than Edwardsville's own suburban band.
Glen Carbon, IL is itself still a measured city, not a designated dark-sky park, this only compares against the 3,206 places this dataset covers.
Edwardsville against the rest of the dataset
Edwardsville, IL has a population of about 26,715, one of 3,206 US cities of 10,000 or more residents in this dataset. Among all 3,206 cities here, Edwardsville ranks 2,121 from darkest to brightest, 1 being the darkest measured, by the sampling the methodology guide documents.