YozoraAtlas

How dark is the sky in Mississippi?

Sky darkness for 6 towns and parks in Mississippi, worked out from NASA satellite images of light at night (2025). 3 of them have skies of Bortle 4 or darker, where the Milky Way shows overhead. The darkest is Emmett Till and Mamie Till-Mobley National Monument (21.23, Bortle 4), the brightest Southaven (17.84, Bortle 8).

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 Mississippi with every place marked

Darkest skies in Mississippi

  1. Emmett Till and Mamie Till-Mobley National MonumentBortle 421.23
  2. Holmes County State ParkBortle 421.11
  3. Wall Doxey State ParkBortle 420.62

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 Mississippi

  1. SouthavenBortle 817.84
  2. JacksonBortle 817.87
  3. GulfportBortle 818.36

All 6 places in Mississippi

Amber names are parks and certified dark-sky places. The figure is the Bortle class: 1 darkest, 9 city center.
Emmett Till and Mamie Till-Mobley National Monument4Gulfport8Holmes County State Park4Jackson8Southaven8Wall Doxey State Park4