YozoraAtlas

How dark is the sky in Balearic Islands?

Sky darkness for 6 towns and parks in Balearic Islands, 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 S'Albufera des Grau Natural Park (21.40, Bortle 4), the brightest Palma (18.53, Bortle 7). Milky Way season in Balearic Islands runs March to September: on moonless nights the bright core stands clear of the horizon, climbing to about 22° at its highest.

19 Bortle class, 1 pristine to 9 city center park or dark-sky place city

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

NASA satellite night-lights map of Balearic Islands with every place marked

Darkest skies in Balearic Islands

  1. S'Albufera des Grau Natural ParkBortle 421.40
  2. Ses Salines Natural ParkBortle 421.15
  3. MenorcaBortle 421.13
  4. Mondragó Natural ParkBortle 420.86

Among the places on this site. Plenty of land between them is just as dark, with no town or park to name it by.

Brightest city skies in Balearic Islands

  1. PalmaBortle 718.53
  2. CalviàBortle 519.99

All 6 places in Balearic Islands

Amber names are parks and certified dark-sky places. The figure is the Bortle class: 1 darkest, 9 city center.
Calvià5Menorca4Mondragó Natural Park4Palma7S'Albufera des Grau Natural Park4Ses Salines Natural Park4