Montgomery, IL: how dark is the sky here?

Montgomery's sky measures urban here. Sky glow overhead most nights. Typically only planets, the Moon, and a handful of the brightest stars are visible. Montgomery's sky is brighter than 91.8% of the 3,206 cities in this dataset.

This comes from a satellite measuring light radiating upward, not a person's eyes on the ground, so it isn't the same as a Bortle class, though the two track each other closely.

How far Montgomery is from a meaningfully darker sky

The closest place in this dataset with a meaningfully darker sky is Oswego, IL, roughly 3 miles away in a straight line, rated suburban. Road distance will be more.

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

How Montgomery compares nationally

Montgomery, IL counts roughly 21,957 residents, among the 3,206 US cities this site tracks. Montgomery places 2,928 of 3,206 cities in this dataset's darkest-to-brightest order.