Seeing for Ashburn

Tue 2018-02-20 to Wed 2018-02-21
Ground Sky
Hour (EST) Temp rel. hum. Clouds
Best values are marked
arc sec.
19 20°C 71% 0 0.99
20 19°C 71% 0 0.99
21 18°C 78% 0 1.04
22 17°C 84% 0 1.09
23 17°C 87% 1 1.12
0 16°C 88% 2 1.15
1 15°C 87% 3 1.20
2 15°C 93% 2 1.29
3 14°C 97% 2 1.41
4 14°C 97% 2 1.52
5 14°C 97% 15 1.63
6 14°C 97% 31 1.72
7 15°C 97% 46 1.81
8 16°C 96% 63 1.86
9 17°C 97% 79 1.83
10 19°C 96% 95 1.73
11 21°C 93% 90 1.63
12 22°C 82% 84 1.61
13 23°C 74% 78 1.56
14 24°C 68% 75 1.43
15 24°C 67% 71 1.35
16 24°C 65% 68 1.35
17 23°C 65% 61 1.40
18 22°C 66% 54 1.44