Night Light of Urbana (Illinois) from space (United States) Src. Average luminocity for 10x10km area is 70.4935% and for 50x50km: 9.472%.
Square area 10x10 km:
 24.51%
 20.78%
 6.98%
 6.66%
 5.84%
 4.71%
 7.31%
 6.01%
 7.14%
 9.42%
 0.65%Square area 50x50 km:
 1.62%
 1.71%
 1.51%
 0.89%
 1.23%
 0.91%
 1.17%
 1.07%
 2.15%
 5.5%
 82.24%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
40° 38' 46.4" North, 88° 54' 37.4" West
40° 6' 38.1" North, 88° 12' 26.2" West
39° 34' 14.6" North, 87° 30' 14.9" West
Some cities around Urbana sort by population:
• Champaign
		3.1 km =1.9 mi, 
281°
• Danville
		49.1 km =30.5 mi, 
88°
• Rantoul
		22.4 km =13.9 mi, 
11°
• Savoy
		7.3 km =4.5 mi, 
211°
• Mahomet
		19.2 km =11.9 mi, 
299°
• Clinton
		64.6 km =40.1 mi, 
274°
• Monticello
		32.5 km =20.2 mi, 
253°
• Hoopeston
		60.5 km =37.6 mi, 
49°
Sources (retrieved 2019-11-25):
» Earth at Night: Flat Maps 2012, 2016