What the night sky looks like over Buckeye, AZ
Satellite radiance puts Buckeye in the dark sky band. Among the darkest skies of any US city in this dataset. The Milky Way should be visible overhead on clear, moonless nights. That's brighter than 1% of the 3,206 US 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.
Buckeye is already about as dark as this dataset gets
Nothing in this dataset's 3,206 US cities measures a darker sky than Buckeye. That doesn't mean nowhere is darker, unincorporated land and wilderness aren't part of this dataset at all, only incorporated cities of 10,000 people or more.
Buckeye against the rest of the dataset
Buckeye, AZ has a population of about 114,334, one of 3,206 US cities of 10,000 or more residents in this dataset. Among all 3,206 cities here, Buckeye ranks 32 from darkest to brightest, 1 being the darkest measured.