How dark is the sky in Abruzzo?
Sky darkness for 6 towns and parks in Abruzzo, worked out from NASA satellite images of light at night (2025). 4 of them have skies of Bortle 4 or darker, where the Milky Way shows overhead. The darkest is Gran Sasso and Monti della Laga National Park (21.08, Bortle 4), the brightest Pescara (18.75, Bortle 7). Milky Way season in Abruzzo runs April to August: on moonless nights the bright core stands clear of the horizon, climbing to about 19° at its highest.
Numbers like 21.95 or 16.97 are the brightness of the sky overhead on a clear, moonless night, in mag/arcsec². The scale runs backwards: a lower number means a brighter sky, from about 22 for a natural sky to about 17 in a city center.
How the readings are made
Darkest skies in Abruzzo
- Gran Sasso and Monti della Laga National ParkBortle 421.08
- Maiella National ParkBortle 420.97
- Abruzzo, Lazio and Molise National ParkBortle 420.75
- Sirente-Velino Regional ParkBortle 420.69
Among the places on this site. Plenty of land between them is just as dark, with no town or park to name it by.
