Night Light of Champaign (Illinois) from space (United States) Src. Average luminocity for 10x10km area is 85.8166% and for 50x50km: 9.5707%.
Square area 10x10 km:
 32.31%
 31.01%
 9.58%
 6.01%
 6.17%
 4.55%
 5.03%
 3.9%
 1.46%
 0%
 0%Square area 50x50 km:
 1.62%
 1.71%
 1.53%
 0.87%
 1.26%
 0.91%
 1.21%
 1.1%
 2.15%
 5.63%
 82.01%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
40° 39' 7.2" North, 88° 56' 47.4" West
40° 6' 59.1" North, 88° 14' 36.2" West
39° 34' 35.7" North, 87° 32' 24.9" West
Some cities around Champaign sort by population:
• Urbana
		3.1 km =1.9 mi, 
101°
• Danville
		52.2 km =32.4 mi, 
89°
• Rantoul
		22.6 km =14 mi, 
19°
• Savoy
		6.9 km =4.3 mi, 
185°
• Mahomet
		16.2 km =10.1 mi, 
302°
• Clinton
		61.4 km =38.2 mi, 
273°
• Monticello
		29.8 km =18.5 mi, 
250°
• Hoopeston
		62.5 km =38.8 mi, 
51°
Sources (retrieved 2019-11-25):
» NASA, Earths city lights 1995
» NASA city lights 2003
» Earth at Night: Flat Maps 2012, 2016