YozoraAtlas

How dark is the sky in Navarre?

Sky darkness for 3 towns and parks in Navarre, worked out from NASA satellite images of light at night (2025). 2 of them have skies of Bortle 4 or darker, where the Milky Way shows overhead. The darkest is Bardenas Reales Natural Park (21.10, Bortle 4), the brightest Pamplona (18.36, Bortle 8). Milky Way season in Navarre runs April to August: on moonless nights the bright core stands clear of the horizon, climbing to about 19° 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 Navarre with every place marked

Darkest skies in Navarre

  1. Bardenas Reales Natural ParkBortle 421.10
  2. Señorío de Bértiz Natural ParkBortle 420.99

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 Navarre

  1. PamplonaBortle 818.36

All 3 places in Navarre

Amber names are parks and certified dark-sky places. The figure is the Bortle class: 1 darkest, 9 city center.
Bardenas Reales Natural Park4Pamplona8Señorío de Bértiz Natural Park4