Night Light of Fairfield (Illinois) from space (United States) Src. Average luminocity for 10x10km area is 10.5816% and for 50x50km: 0.934%.
Square area 10x10 km:
 0.34%
 1.02%
 0.85%
 3.23%
 1.02%
 2.72%
 2.38%
 0.51%
 1.53%
 2.04%
 84.35%Square area 50x50 km:
 0.01%
 0.05%
 0.07%
 0.17%
 0.13%
 0.2%
 0.24%
 0.36%
 0.33%
 0.11%
 98.32%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
38° 55' 40.9" North, 89° 3' 46.4" West
38° 22' 44.2" North, 88° 21' 35.2" West
37° 49' 32.3" North, 87° 39' 23.9" West
Some cities around Fairfield sort by population:
• Mount Vernon
		47.9 km =29.8 mi, 
261°
• Olney
		45.8 km =28.5 mi, 
31°
• Princeton
		69.1 km =42.9 mi, 
92°
• Salem
		58 km =36 mi, 
298°
• Benton
		64.8 km =40.3 mi, 
229°
• Mount Carmel
		52.3 km =32.5 mi, 
86°
• Mount Vernon
		64.2 km =39.9 mi, 
140°
• Carmi
		36.5 km =22.7 mi, 
151°
Sources (retrieved 2019-11-25):
» Earth at Night: Flat Maps 2012, 2016