Clear Outside v1.0 - International Weather Forecasts For Astronomers

Monday 18

Waxing Crescent 13%

08:01

23:06

16 OK
17 OK
18 OK
19 Bad
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad
01 OK
02 Good
03 Good
04 Good
05 Good
06 Bad
07 Bad
08 Bad
09 Bad
10 OK
11 Bad
12 Bad
13 Bad
14 Bad
15 Bad

Sun - Rise: 05:44, Set: 20:16, Transit: 13:01. Moon - Rise: 08:01, Set: 23:06. Civil Dark: 20:48 - 05:13. Nautical Dark: 21:26 - 04:34. Astro Dark: 22:10 - 03:50

Total Clouds (% Sky Obscured)

13
9
9
0
70
65
55
30
59
28
8
0
0
0
84
97
56
72
28
37
54
76
45
84

Low Clouds (% Sky Obscured)

0
0
0
0
11
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

13
9
3
0
0
27
40
23
59
27
6
0
0
0
0
0
0
0
0
1
3
19
20
84

High Clouds (% Sky Obscured)

0
0
0
0
55
60
42
3
3
1
0
0
0
0
84
96
36
56
28
24
46
59
22
59

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9

Fog (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Type

None
None
None
Very Light Rain
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

0
0
0
39
5
0
8
36
0
0
0
0
0
0
0
0
0
0
0
1
1
4
1
1

Precipitation Amount (mm)

0
0
0
0.2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

6
8
8
8
11
7
7
6
5
3
3
2
2
1
2
2
2
3
5
6
8
10
11
11

Chance of Frost

Temperature (°C)

33
33
32
33
30
28
26
25
24
23
22
22
21
21
21
21
23
26
29
31
33
34
35
35

Feels Like (°C)

36
37
36
36
30
28
26
26
26
24
24
25
25
25
25
23
24
27
30
34
35
34
34
36

Dew Point (°C)

22
24
24
28
26
24
22
21
22
20
19
20
19
19
19
19
20
21
23
24
25
25
24
25

Relative Humidity (%)

52
59
62
75
76
82
77
78
84
81
83
88
88
88
88
85
79
75
72
67
62
57
54
56

Pressure (mb)

1019
1018
1018
1019
1020
1020
1020
1021
1021
1021
1020
1020
1020
1020
1020
1020
1021
1021
1021
1020
1020
1019
1018
1018

Ozone (du)

322
323
323
322
320
317
318
318
321
321
319
317
317
318
319
319
318
316
315
314
313
312
311
309

Tuesday 19

Waxing Crescent 13%

09:16

00:03

16 Bad
17 Bad
18 Bad
19 Bad
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad
01 OK
02 Bad
03 Bad
04 OK
05 OK
06 OK
07 Bad
08 Bad
09 Bad
10 Bad
11 Bad
12 Bad
13 Bad
14 Bad
15 Bad

Sun - Rise: 05:43, Set: 20:17, Transit: 13:01. Moon - Rise: 09:16, Set: 00:03. Civil Dark: 20:49 - 05:12. Nautical Dark: 21:27 - 04:33. Astro Dark: 22:11 - 03:49

Total Clouds (% Sky Obscured)

81
79
89
91
74
95
75
89
92
36
60
54
15
20
32
59
61
60
63
83
51
98
98
94

Low Clouds (% Sky Obscured)

2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
5
18
58
13
81

Medium Clouds (% Sky Obscured)

81
73
75
74
74
73
75
87
88
25
54
54
3
4
3
20
10
9
63
73
31
71
66
36

High Clouds (% Sky Obscured)

70
70
70
82
59
91
57
66
29
2
4
1
8
16
23
40
40
45
42
26
17
67
93
75

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
7
9
9
9
9
9
9
9
9
9
9
9

Fog (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Type

None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
Very Light Rain

Precipitation Probability (%)

2
14
11
1
10
27
4
1
4
2
1
24
20
3
4
0
0
0
2
12
15
24
35
71

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.2

Wind Speed/Direction (mph)

12
11
10
8
5
4
4
4
3
3
2
2
3
3
3
3
3
6
10
11
12
13
12
11

Chance of Frost

Temperature (°C)

35
35
34
33
31
29
26
24
24
23
23
23
23
22
22
23
25
27
29
30
30
31
31
31

Feels Like (°C)

36
36
36
35
32
29
27
25
24
24
26
25
24
24
24
24
26
28
29
30
30
33
31
31

Dew Point (°C)

26
27
27
28
26
23
21
19
18
19
20
19
20
19
19
20
22
22
24
24
23
23
23
21

Relative Humidity (%)

58
63
68
76
74
72
76
73
69
75
80
78
80
83
85
85
82
74
72
69
66
61
62
56

Pressure (mb)

1017
1017
1017
1017
1017
1017
1017
1017
1017
1017
1016
1016
1016
1016
1016
1017
1017
1017
1017
1016
1016
1015
1015
1015

Ozone (du)

308
309
309
309
309
309
309
310
311
311
311
312
312
312
313
314
317
317
314
314
315
315
314
315

Wednesday 20

Waxing Crescent 23%

10:33

00:46

16 Bad
17 Bad
18 Bad
19 Bad
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad
01 Bad
02 Bad
03 Bad
04 Bad
05 Bad
06 Bad
07 Bad
08 Bad
09 Bad
10 Bad
11 Bad
12 Bad
13 Bad
14 Bad
15 Bad

Sun - Rise: 05:43, Set: 20:18, Transit: 13:01. Moon - Rise: 10:33, Set: 00:46. Civil Dark: 20:50 - 05:11. Nautical Dark: 21:29 - 04:32. Astro Dark: 22:12 - 03:48

Total Clouds (% Sky Obscured)

100
99
100
100
100
100
85
55
82
67
89
93
96
94
99
100
100
99
95
95
95
100
100
100

Low Clouds (% Sky Obscured)

87
25
13
64
84
86
64
13
12
8
0
0
10
25
17
77
73
65
60
10
45
49
55
43

Medium Clouds (% Sky Obscured)

37
61
100
99
94
83
37
43
72
33
59
30
57
64
96
98
99
98
95
95
95
100
100
100

High Clouds (% Sky Obscured)

73
96
100
100
100
81
59
45
11
65
56
85
86
79
89
100
83
24
59
67
75
90
90
90

ISS Passover

Visibility (miles)

7
9
9
3
6
7
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9

Fog (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Type

Light Rain
Very Light Rain
Light Rain
Light Rain
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

95
91
95
75
38
26
6
3
0
0
0
0
0
0
0
1
8
31
47
25
36
25
19
42

Precipitation Amount (mm)

1.1
0.3
0.6
0.4
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

14
10
10
8
7
8
8
10
9
8
7
7
7
7
8
9
9
8
6
5
6
4
4
4

Chance of Frost

Temperature (°C)

29
24
24
22
21
20
19
18
17
16
15
14
13
13
12
12
12
13
14
15
16
17
17
17

Feels Like (°C)

29
24
24
23
23
21
19
16
16
14
15
13
11
10
9
9
10
11
12
13
14
16
16
16

Dew Point (°C)

20
20
21
20
20
19
18
15
14
14
13
11
10
9
8
8
7
8
8
9
8
11
13
14

Relative Humidity (%)

59
78
80
89
92
92
92
85
86
87
86
82
80
80
79
75
71
70
67
67
57
67
73
78

Pressure (mb)

1014
1015
1016
1017
1018
1019
1020
1020
1020
1021
1021
1022
1022
1023
1023
1024
1024
1025
1025
1025
1025
1025
1025
1025

Ozone (du)

313
313
313
311
310
311
314
314
315
315
314
314
312
313
312
313
313
313
313
313
313
314
315
315

Thursday 21

Waxing Crescent 33%

11:47

01:21

16 Bad
17 Bad
18 Bad
19 Bad
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad
01 Bad
02 Bad
03 Bad
04 Bad
05 Bad
06 Bad
07 Bad
08 Bad
09 Bad
10 Bad
11 Bad
12 Bad
13 Bad
14 Bad
15 Bad

Sun - Rise: 05:42, Set: 20:19, Transit: 13:01. Moon - Rise: 11:47, Set: 01:21. Civil Dark: 20:51 - 05:10. Nautical Dark: 21:30 - 04:31. Astro Dark: 22:14 - 03:47

Total Clouds (% Sky Obscured)

100
99
98
97
98
99
100
99
99
98
99
99
100
100
100
100
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

30
31
33
47
57
63
65
63
62
61
66
65
52
48
47
49
69
75
82
82
84
86
84
84

Medium Clouds (% Sky Obscured)

100
98
96
92
95
97
100
99
99
98
99
99
97
100
97
100
93
100
100
100
100
100
100
100

High Clouds (% Sky Obscured)

89
80
70
60
69
79
89
76
64
56
67
72
76
84
92
100
100
100
100
99
98
96
82
69

ISS Passover

Visibility (miles)

5
7
9
9
5
4
3
5
7
9
9
9
9
9
9
9
9
9
8
6
6
3
2
3

Fog (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Type

Very Light Rain
None
None
Very Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Very Light Rain
None
None
None
None
None
None
Very Light Rain
Very Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain

Precipitation Probability (%)

53
44
45
68
71
86
91
75
52
25
11
8
22
33
52
58
65
80
95
95
95
95
95
95

Precipitation Amount (mm)

0.2
0
0
0.3
0.5
0.6
0.8
0.4
0.2
0
0
0
0
0
0
0.2
0.3
0.4
0.7
0.7
0.9
1.3
1.6
1.6

Wind Speed/Direction (mph)

3
3
2
2
3
3
3
3
3
3
3
2
2
2
3
3
4
5
6
6
7
7
7
8

Chance of Frost

Temperature (°C)

17
17
17
16
16
15
15
14
14
13
13
13
13
13
13
13
13
13
13
13
13
12
12
12

Feels Like (°C)

16
16
16
16
15
15
15
14
14
13
12
12
12
12
12
12
11
11
11
11
11
10
11
10

Dew Point (°C)

15
16
16
16
15
15
14
14
14
13
12
13
12
12
13
12
12
12
11
12
12
11
12
12

Relative Humidity (%)

88
93
93
95
95
96
96
98
98
98
95
96
95
95
96
95
95
92
92
95
95
93
95
96

Pressure (mb)

1024
1024
1024
1025
1025
1025
1026
1026
1026
1026
1026
1026
1026
1025
1026
1026
1027
1027
1027
1027
1027
1027
1027
1027

Ozone (du)

316
317
318
319
319
320
321
321
320
320
321
320
321
322
322
322
323
325
326
324
325
324
324
323

Friday 22

Waxing Crescent 45%

12:57

01:48

16 Bad
17 Bad
18 Bad
19 Bad
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad
01 Bad
02 Bad
03 Bad
04 Bad
05 Bad
06 Bad
07 Bad
08 Bad
09 Bad
10 Bad
11 Bad
12 Bad
13 Bad
14 Bad
15 Bad

Sun - Rise: 05:41, Set: 20:20, Transit: 13:01. Moon - Rise: 12:57, Set: 01:48. Civil Dark: 20:51 - 05:10. Nautical Dark: 21:31 - 04:30. Astro Dark: 22:15 - 03:45

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

84
85
87
88
92
96
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100

Medium Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
99
99
100
100
100
96
92
88
90
93
95
95
94
93
94
94

High Clouds (% Sky Obscured)

59
71
88
94
95
94
95
96
98
99
94
86
85
88
95
100
100
100
100
100
100
100
100
100

ISS Passover

Visibility (miles)

3
4
3
6
5
9
9
8
9
9
9
4
3
4
3
4
3
4
4
5
4
3
2
2

Fog (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Type

Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Very Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain

Precipitation Probability (%)

95
95
95
95
95
95
95
95
84
68
85
95
95
95
95
95
95
95
95
95
95
95
95
95

Precipitation Amount (mm)

2
2.1
1.9
1.9
1.8
1.6
1.4
1.1
0.6
0.3
0.5
0.7
0.5
0.7
1
1.1
1
1
0.9
0.9
1
1.2
1.5
1.7

Wind Speed/Direction (mph)

7
7
7
7
7
7
8
8
8
8
8
8
9
9
10
10
11
11
11
11
11
11
11
10

Chance of Frost

Temperature (°C)

12
12
12
11
11
11
10
10
10
10
10
10
10
10
10
10
10
10
10
9
9
9
10
9

Feels Like (°C)

10
10
10
9
9
9
9
9
8
8
8
8
8
7
7
7
7
7
7
6
6
6
6
6

Dew Point (°C)

11
11
11
11
10
10
10
10
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9

Relative Humidity (%)

95
96
96
96
96
96
96
96
96
96
95
96
96
96
96
96
96
95
95
95
95
95
96
96

Pressure (mb)

1027
1027
1027
1027
1027
1027
1027
1028
1027
1027
1027
1027
1027
1027
1027
1027
1027
1027
1027
1027
1027
1027
1027
1027

Ozone (du)

323
324
325
326
325
325
327
326
323
322
323
323
322
323
324
325
325
324
323
323
322
321
321
320

Saturday 23

First Quarter 56%

14:03

02:12

16 Bad
17 Bad
18 Bad
19 Bad
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad
01 Bad
02 Bad
03 Bad
04 Bad
05 Bad
06 Bad
07 Bad
08 Bad
09 Bad
10 Bad
11 Bad
12 Bad
13 Bad
14 Bad
15 Bad

Sun - Rise: 05:41, Set: 20:21, Transit: 13:01. Moon - Rise: 14:03, Set: 02:12. Civil Dark: 20:52 - 05:09. Nautical Dark: 21:32 - 04:29. Astro Dark: 22:17 - 03:44

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

100
100
100
100
100
100
100
97
95
94
95
97
100
100
100
100
100
100
100
100
100
100
100
100

Medium Clouds (% Sky Obscured)

95
94
93
94
99
98
99
83
68
55
48
46
59
95
98
100
97
93
90
36
26
13
5
5

High Clouds (% Sky Obscured)

100
98
97
96
97
97
99
79
57
37
37
38
38
57
76
95
96
98
99
94
87
81
82
74

ISS Passover

Visibility (miles)

2
2
3
3
4
3
3
2
4
7
9
9
9
9
8
8
7
6
6
6
7
8
9
9

Fog (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Type

Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Very Light Rain
None
None
None
None
Light Rain
Very Light Rain
None
None
None
None

Precipitation Probability (%)

95
95
95
95
95
95
95
95
95
95
95
95
80
68
53
32
37
42
56
45
34
20
19
20

Precipitation Amount (mm)

2
2
1.8
1.5
1.3
1.2
1.1
1.2
1.2
1.2
1
0.8
0.4
0.3
0
0
0
0
0.4
0.2
0
0
0
0

Wind Speed/Direction (mph)

11
11
10
10
10
10
10
10
10
10
9
9
9
8
8
8
9
9
9
9
9
9
9
9

Chance of Frost

Temperature (°C)

9
10
10
10
9
9
9
9
9
9
9
10
10
10
10
10
10
11
11
11
11
11
11
11

Feels Like (°C)

6
6
6
6
6
6
6
5
5
5
5
5
5
5
6
6
6
8
7
8
8
8
8
9

Dew Point (°C)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
10
10
10
10
10
11
11
11
10

Relative Humidity (%)

96
98
98
98
96
96
96
96
98
96
96
96
96
96
96
96
98
98
96
96
96
96
96
95

Pressure (mb)

1026
1026
1026
1026
1026
1026
1026
1026
1026
1026
1026
1026
1026
1026
1026
1026
1027
1027
1027
1027
1027
1027
1027
1027

Ozone (du)

320
319
322
324
327
328
330
331
333
334
336
333
330
328
327
327
326
325
325
324
323
323
322
321

Sunday 24

Waxing Gibbous 66%

15:07

02:34

16 Bad
17 Bad
18 Bad
19 Bad
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad
01 Bad
02 Bad
03 Bad
04 Bad
05 Bad
06 Bad
07 Bad
08 Bad
09 Bad
10 Bad
11 Bad
12 Bad
13 Bad

Sun - Rise: 05:40, Set: 20:22, Transit: 13:01. Moon - Rise: 15:07, Set: 02:34. Civil Dark: 20:53 - 05:08. Nautical Dark: 21:33 - 04:28. Astro Dark: 22:18 - 03:43

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
99
100
100
100

Medium Clouds (% Sky Obscured)

6
20
35
50
62
72
80
86
91
95
92
90
89
90
90
95
92
88
82
66
52
38

High Clouds (% Sky Obscured)

65
77
89
100
99
99
98
99
99
100
78
57
35
57
78
100
76
71
63
80
91
98

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
8
7
6
4
2
2
2
2
4
7

Fog (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Type

None
None
None
None
None
None
None
None
None
None
Very Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Very Light Rain
None
None
None
None
None

Precipitation Probability (%)

19
17
14
6
8
6
2
10
16
21
62
86
95
95
92
83
68
48
32
31
24
9

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0.3
0.5
0.8
0.7
0.6
0.4
0.3
0
0
0
0
0

Wind Speed/Direction (mph)

9
9
8
8
7
7
6
6
6
5
5
4
4
3
3
3
3
3
4
4
4
4

Chance of Frost

Temperature (°C)

11
11
11
11
11
11
11
11
10
10
10
10
10
10
10
10
10
11
11
11
12
13

Feels Like (°C)

9
9
9
9
8
8
8
8
8
8
8
8
7
8
8
7
8
9
9
9
9
10

Dew Point (°C)

10
10
10
10
10
10
10
10
10
10
9
10
9
10
10
10
10
10
10
11
11
12

Relative Humidity (%)

95
95
95
95
95
95
95
95
95
96
95
96
96
98
98
98
98
98
96
96
96
95

Pressure (mb)

1027
1026
1026
1026
1026
1026
1026
1026
1026
1025
1025
1025
1024
1024
1024
1025
1025
1025
1025
1025
1024
1024

Ozone (du)

319
318
317
317
317
317
317
317
317
317
316
317
317
317
319
322
325
325
326
327
327
326

Forecast for Ephrata, Lancaster, United States of America (40.18,-76.17)

Generated: 18/05/26 16:32:56. Forecast: 18/05/26 to 24/05/26. Timezone: UTC-4.00