Key Biscayne, FL: how dark is the sky here?

Key Biscayne's sky measures suburban here. Light dome dominates much of the sky. Only the brightest stars and planets stand out clearly. Only 70.9% of the 3,206 cities measured here read darker than Key Biscayne.

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 Key Biscayne is from a meaningfully darker sky

Miami Beach, FL, about 8 miles away as the crow flies, measures in the suburban edge band, one step darker than Key Biscayne. Actual driving distance will run longer than that straight-line figure.

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

How Key Biscayne compares nationally

About 15,111 people live in Key Biscayne, FL, sized enough to appear in this dataset of 3,206 incorporated US cities. Key Biscayne places 2,262 of 3,206 cities in this dataset's darkest-to-brightest order.