Seeing for 38.44°N 77.13°W

Fri 2019-01-18 to Sat 2019-01-19
Ground Sky
Hour (EST) Temp rel. hum. Clouds
Best values are marked
arc sec.
13 6°C 74% 71 1.76
14 6°C 72% 62 1.72
15 7°C 71% 54 1.71
16 6°C 71% 45 1.68
17 5°C 72% 50 1.64
18 4°C 72% 56 1.63
19 3°C 74% 62 1.61
20 2°C 77% 70 1.57
21 2°C 80% 79 1.53
22 1°C 83% 88 1.51
23 1°C 80% 92 1.50
0 1°C 78% 96 1.51
1 1°C 79% 100 1.53
2 0°C 82% 100 1.56
3 0°C 84% 100 1.57
4 0°C 88% 100 1.58
5 0°C 91% 100 1.59
6 1°C 95% 100 1.60
7 1°C 96% 100 1.65
8 2°C 96% 100 1.71
9 2°C 96% 100 1.82
10 3°C 97% 100 1.95
11 3°C 95% 100 2.07
12 3°C 95% 100 2.13