Night Light of Foster City (California) from space (United States) Src. Average luminocity for 10x10km area is 61.1964% and for 50x50km: 39.4966%.
Square area 10x10 km:
 13.96%
 13.96% 18.02%
 18.02% 4.38%
 4.38% 7.95%
 7.95% 6.98%
 6.98% 9.25%
 9.25% 9.58%
 9.58% 4.87%
 4.87% 13.15%
 13.15% 10.06%
 10.06% 1.79%
 1.79%Square area 50x50 km:
 10.3%
 10.3% 9.04%
 9.04% 2.19%
 2.19% 4.81%
 4.81% 5.26%
 5.26% 5.5%
 5.5% 4.45%
 4.45% 4.72%
 4.72% 9.73%
 9.73% 12.82%
 12.82% 31.18%
 31.18%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
38° 6' 49.9" North, 122° 58' 27.2" West
37° 33' 30.8" North, 122° 16' 15.9" West
36° 59' 56.7" North, 121° 34' 4.7" West
Some cities around Foster City sort by population:
• San Mateo
		4.8 km =3 mi,  275°
275°
• Redwood City
		8.7 km =5.4 mi,  159°
159°
• Burlingame
		8.8 km =5.5 mi,  288°
288°
• San Carlos
		5.8 km =3.6 mi,  170°
170°
• Belmont
		4.3 km =2.7 mi,  185°
185°
• Millbrae
		11.2 km =7 mi,  293°
293°
• Hillsborough
		9.7 km =6 mi,  280°
280°
• Redwood Shores
		3.6 km =2.2 mi,  145°
145°
Sources (retrieved 2019-11-25):
» Earth at Night: Flat Maps 2012, 2016