Night Light of Salem (Illinois) from space (United States) Src. Average luminocity for 10x10km area is 25.7614% and for 50x50km: 4.5127%.
Square area 10x10 km:
Square area 50x50 km:
Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
39° 10' 27" North, 89° 38' 55.5" West
38° 37' 37.2" North, 88° 56' 44.2" West
38° 4' 32.1" North, 88° 14' 33" West
Some cities around Salem sort by population:
• Mount Vernon
34.6 km =21.5 mi, 173°
• Centralia
19.9 km =12.4 mi, 235°
• Effingham
64.9 km =40.3 mi, 32°
• Highland
64.2 km =39.9 mi, 281°
• Vandalia
39.3 km =24.4 mi, 340°
• Benton
70.1 km =43.6 mi, 178°
• Greenville
50.1 km =31.1 mi, 306°
• Fairfield
58 km =36 mi, 118°
Sources (retrieved 2019-11-25):
» Earth at Night: Flat Maps 2012, 2016