Seeing for 38.44°N 77.13°W

Wed 2017-09-20 to Thu 2017-09-21
Ground Sky
Hour (EDT) Temp rel. hum. Clouds
Best values are marked
arc sec.
13 30°C 53% 29 1.69
14 30°C 50% 25 1.66
15 30°C 46% 17 1.64
16 29°C 44% 8 1.63
17 28°C 42% 0 1.63
18 27°C 43% 0 1.63
19 24°C 45% 0 1.63
20 23°C 47% 0 1.65
21 22°C 48% 0 1.67
22 22°C 49% 0 1.69
23 22°C 50% 0 1.71
0 21°C 51% 0 1.73
1 21°C 52% 0 1.74
2 21°C 53% 0 1.76
3 21°C 55% 0 1.79
4 20°C 56% 0 1.82
5 20°C 58% 0 1.85
6 20°C 59% 0 1.88
7 20°C 61% 0 1.90
8 21°C 62% 0 1.92
9 22°C 64% 0 1.94
10 24°C 64% 0 1.96
11 26°C 59% 1 1.96
12 27°C 54% 24 1.96