Alpharetta, GA: how dark is the sky here?

Satellite radiance puts Alpharetta in the urban band. Sky glow overhead most nights. Typically only planets, the Moon, and a handful of the brightest stars are visible. Alpharetta's sky is brighter than 88.8% 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.

Where to go for a darker sky near Alpharetta

5 miles from Alpharetta, straight-line, sits Johns Creek, GA, the nearest city here with a darker sky than Alpharetta's own urban band.

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

How Alpharetta compares nationally

Alpharetta, GA has a population of about 67,275, one of 3,206 US cities of 10,000 or more residents in this dataset. Alpharetta places 2,832 of 3,206 cities in this dataset's darkest-to-brightest order.