Clear Outside v1.0 - International Weather Forecasts For Astronomers

Tuesday 25

Waxing Crescent 24%

No Rise

No Set

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
16 Bad
17 Bad
18 Bad
19 Bad
20 Bad
21 Bad
22 Bad
23 Bad

Sun - Rise: N/A, Set: N/A, Transit: 11:43. Moon - Rise: No Rise, Set: No Set. Civil Dark: N/A - N/A. Nautical Dark: 14:32 - 08:53. Astro Dark: 16:54 - 06:31

Total Clouds (% Sky Obscured)

100
100
100
95
100
100
100
100
100
100
100
100
100
100
100
100
99
93
92
88
92
93
96
97

Low Clouds (% Sky Obscured)

35
29
36
63
78
75
65
43
68
73
73
59
79
72
80
89
85
79
83
60
58
41
36
34

Medium Clouds (% Sky Obscured)

100
98
100
91
99
100
100
100
61
95
100
100
46
81
79
48
45
30
74
15
30
93
37
51

High Clouds (% Sky Obscured)

75
75
73
64
70
69
70
70
29
14
7
32
51
70
70
65
60
60
59
41
37
55
55
55

ISS Passover

Visibility (miles)

8
8
8
8
8
8
7
0
0
0
0
0
0
0
1
3
0
0
0
5
1
3
0
2

Fog (%)

1
0
0
0
0
0
1
1
0
0
0
1
0
3
4
2
0
0
0
0
0
0
0
1

Precipitation Type

None
None
None
None
None
None
None
Snow
Snow
Snow
Snow
Snow
None
None
None
None
None
Snow
Snow
None
None
None
None
None

Precipitation Probability (%)

5
0
0
2
6
15
16
42
33
55
44
40
20
22
16
29
34
49
37
15
4
13
13
20

Precipitation Amount (mm)

0
0
0
0
0
0
0
0.2
0.1
0.4
0.2
0.2
0
0
0
0
0
0.3
0.2
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

-9
-9
-9
-10
-9
-10
-9
-8
-9
-9
-9
-9
-9
-9
-9
-9
-9
-9
-10
-10
-9
-9
-9
-10

Feels Like (°C)

-14
-14
-15
-15
-14
-15
-13
-12
-14
-14
-15
-14
-14
-13
-13
-13
-14
-13
-14
-16
-14
-14
-14
-14

Dew Point (°C)

-11
-11
-11
-12
-12
-12
-12
-10
-11
-11
-10
-10
-10
-10
-10
-10
-10
-11
-10
-11
-10
-11
-10
-11

Relative Humidity (%)

85
85
85
85
83
81
80
83
85
85
92
87
88
88
88
88
92
90
94
90
88
87
90
90

Pressure (mb)

1002
1002
1002
1002
1002
1001
1001
1000
1000
999
998
998
997
997
996
996
997
996
996
996
997
997
998
998

Ozone (du)

377
379
381
382
380
377
379
382
384
384
386
385
386
386
386
385
384
384
383
384
384
384
382
382

Wednesday 26

Waxing Crescent 34%

No Rise

No Set

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
16 Bad
17 Bad
18 Bad
19 Bad
20 Bad
21 Bad
22 Bad
23 Bad

Sun - Rise: N/A, Set: N/A, Transit: 11:43. Moon - Rise: No Rise, Set: No Set. Civil Dark: N/A - N/A. Nautical Dark: 14:27 - 08:59. Astro Dark: 16:50 - 06:35

Total Clouds (% Sky Obscured)

99
97
96
97
85
70
63
71
66
46
45
92
94
97
90
87
85
82
83
82
81
73
72
79

Low Clouds (% Sky Obscured)

90
75
80
81
58
36
36
48
44
24
30
92
94
97
90
87
81
72
72
72
80
73
72
78

Medium Clouds (% Sky Obscured)

97
70
34
46
15
0
0
0
0
0
0
70
70
70
75
85
38
0
0
0
32
33
22
16

High Clouds (% Sky Obscured)

55
60
59
57
57
42
26
41
47
13
12
19
15
3
3
2
3
3
3
4
4
2
2
2

ISS Passover

Visibility (miles)

0
1
4
1
1
1
2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1

Fog (%)

4
1
0
0
0
0
0
0
0
5
8
2
0
0
0
1
3
27
99
100
2
0
1
9

Precipitation Type

None
Snow
Snow
None
None
None
None
None
None
None
None
Snow
Snow
Snow
Snow
Snow
Snow
None
None
None
None
Snow
Snow
None

Precipitation Probability (%)

33
29
32
19
13
13
4
13
7
16
9
38
53
54
59
56
45
22
25
14
32
50
47
30

Precipitation Amount (mm)

0
0.1
0.2
0
0
0
0
0
0
0
0
0.2
0.5
0.5
0.6
0.5
0.3
0
0
0
0
0.3
0.2
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

-10
-9
-9
-8
-7
-7
-8
-9
-8
-8
-8
-8
-9
-8
-6
-6
-5
-6
-6
-6
-6
-6
-6
-6

Feels Like (°C)

-14
-15
-13
-13
-12
-12
-13
-13
-13
-13
-12
-13
-13
-12
-10
-10
-9
-10
-10
-10
-10
-10
-9
-9

Dew Point (°C)

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

Relative Humidity (%)

92
88
87
83
87
87
85
88
88
88
88
88
88
87
89
87
89
89
89
89
89
89
89
89

Pressure (mb)

998
998
998
998
998
998
998
998
998
998
998
998
998
998
997
997
997
997
997
997
997
996
996
996

Ozone (du)

382
381
380
380
378
377
376
374
373
373
374
373
371
370
370
370
367
365
365
363
360
357
354
351

Thursday 27

Waxing Crescent 44%

No Rise

No Set

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
16 Bad
17 Bad
18 Bad
19 Bad
20 Bad
21 Bad
22 Bad
23 Bad

Sun - Rise: N/A, Set: N/A, Transit: 11:43. Moon - Rise: No Rise, Set: No Set. Civil Dark: N/A - N/A. Nautical Dark: 14:22 - 09:05. Astro Dark: 16:47 - 06:39

Total Clouds (% Sky Obscured)

85
86
90
87
87
93
100
100
100
91
84
60
77
89
90
86
83
64
61
55
57
57
60
71

Low Clouds (% Sky Obscured)

85
86
90
80
87
93
95
93
48
67
57
56
65
74
74
73
67
47
56
55
57
57
60
71

Medium Clouds (% Sky Obscured)

47
86
90
87
87
93
100
100
100
91
84
60
77
89
90
86
83
64
61
55
57
57
60
71

High Clouds (% Sky Obscured)

2
2
2
2
2
3
30
39
29
13
13
5
3
4
3
5
7
3
0
0
0
2
0
0

ISS Passover

Visibility (miles)

1
0
0
0
0
0
0
0
5
6
2
0
0
0
1
1
0
0
0
0
0
0
0
0

Fog (%)

1
8
2
0
0
6
24
4
5
14
5
1
1
0
0
0
0
0
0
0
0
0
0
0

Precipitation Type

None
None
None
Snow
Snow
Snow
Snow
Snow
Snow
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

26
24
23
30
59
95
95
92
53
16
19
16
11
11
14
13
18
18
20
26
35
47
55
55

Precipitation Amount (mm)

0
0
0
0.1
0.4
1
1.1
0.9
0.3
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

10
9
10
11
12
14
16
15
18
20
20
23
27
29
29
27
28
28
29
28
28
28
29
26

Chance of Frost

Temperature (°C)

-5
-5
-5
-5
-5
-5
-5
-5
-6
-6
-5
-5
-5
-5
-5
-5
-5
-5
-5
-6
-6
-5
-6
-6

Feels Like (°C)

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

Dew Point (°C)

-7
-6
-7
-7
-6
-7
-7
-6
-7
-8
-7
-7
-7
-8
-8
-8
-8
-7
-8
-8
-8
-8
-8
-9

Relative Humidity (%)

89
89
90
89
89
87
87
89
87
85
85
85
85
84
82
81
81
82
82
82
82
82
82
82

Pressure (mb)

996
996
996
996
995
995
994
994
995
995
995
995
995
994
994
994
994
994
994
994
994
994
994
994

Ozone (du)

347
344
343
342
341
339
337
334
333
330
327
325
324
323
322
321
320
318
315
313
312
312
311
311

Friday 28

First Quarter 55%

15:06

22:17

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
16 Bad
17 Bad
18 Bad
19 Bad
20 Bad
21 Bad
22 Bad
23 Bad

Sun - Rise: N/A, Set: N/A, Transit: 11:44. Moon - Rise: 15:06, Set: 22:17. Civil Dark: N/A - N/A. Nautical Dark: 14:16 - 09:11. Astro Dark: 16:44 - 06:43

Total Clouds (% Sky Obscured)

94
100
100
100
100
100
100
100
100
100
99
99
98
94
86
79
80
81
74
64
73
84
94
95

Low Clouds (% Sky Obscured)

84
87
86
87
88
88
91
94
95
99
92
88
75
72
59
39
37
45
50
53
56
59
59
61

Medium Clouds (% Sky Obscured)

94
100
100
100
100
100
100
100
100
100
96
91
87
72
57
43
30
22
12
1
0
2
35
69

High Clouds (% Sky Obscured)

4
50
45
45
45
45
40
35
30
30
30
30
30
30
30
30
40
40
4
11
16
24
25
22

ISS Passover

Visibility (miles)

0
0
0
1
1
1
0
0
0
0
1
4
9
9
4
4
8
8
8
8
1
8
8
8

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

Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
None
None
None
None
None
None
None
None

Precipitation Probability (%)

73
71
63
67
72
63
61
73
73
78
72
74
80
64
52
38
37
31
10
19
17
6
22
20

Precipitation Amount (mm)

0.4
0.3
0.2
0.3
0.3
0.2
0.2
0.3
0.4
0.6
0.4
0.5
0.8
0.3
0.2
0.1
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

25
23
22
24
28
28
27
27
24
20
16
14
11
7
6
6
7
6
5
4
4
4
4
3

Chance of Frost

Temperature (°C)

-6
-7
-6
-7
-7
-7
-7
-7
-7
-6
-6
-6
-6
-6
-6
-6
-7
-7
-9
-9
-10
-11
-11
-11

Feels Like (°C)

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

Dew Point (°C)

-8
-9
-9
-9
-9
-9
-9
-9
-9
-8
-9
-9
-9
-9
-9
-9
-10
-10
-12
-12
-13
-14
-14
-15

Relative Humidity (%)

84
84
84
82
83
83
85
85
85
85
82
79
76
74
80
79
79
80
78
78
78
75
75
75

Pressure (mb)

994
993
993
993
992
992
991
991
991
991
991
991
990
990
991
991
991
991
992
992
992
992
992
992

Ozone (du)

308
308
306
304
304
303
303
305
307
310
312
313
314
313
314
313
315
317
316
315
316
317
318
319

Saturday 29

Waxing Gibbous 66%

13:37

No Set

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
16 OK
17 OK
18 OK
19 OK
20 OK
21 OK
22 Bad
23 Bad

Sun - Rise: N/A, Set: N/A, Transit: 11:44. Moon - Rise: 13:37, Set: No Set. Civil Dark: N/A - N/A. Nautical Dark: 14:11 - 09:17. Astro Dark: 16:41 - 06:47

Total Clouds (% Sky Obscured)

89
65
74
98
59
53
76
57
55
53
45
41
34
38
42
44
34
29
22
22
26
30
47
59

Low Clouds (% Sky Obscured)

60
64
71
93
59
53
71
57
55
53
45
41
34
38
42
44
34
29
22
22
26
30
47
59

Medium Clouds (% Sky Obscured)

86
48
30
39
21
25
31
23
15
7
3
3
2
6
10
14
15
15
19
14
18
27
36
51

High Clouds (% Sky Obscured)

13
2
1
0
0
1
1
1
0
0
0
0
0
0
0
0
1
1
2
22
26
30
47
59

ISS Passover

Visibility (miles)

8
8
8
9
9
9
8
1
0
1
8
8
8
3
5
7
9
9
9
9
8
6
4
5

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
Snow
Snow
Snow
Snow
None
None
Snow
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

15
25
28
28
31
33
35
37
38
38
30
28
28
27
18
15
13
12
9
12
7
5
13
9

Precipitation Amount (mm)

0
0
0
0
0
0
0.2
0.2
0.2
0.2
0
0
0.1
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-15
-15
-13
-14
-14
-14
-14
-14
-14
-14
-14
-14
-14
-14
-14
-14
-15
-14
-13
-13
-14
-14
-14
-14

Dew Point (°C)

-14
-14
-14
-15
-14
-15
-14
-14
-15
-16
-16
-16
-16
-15
-16
-16
-17
-16
-15
-16
-15
-15
-15
-15

Relative Humidity (%)

76
76
73
75
73
75
76
76
73
72
70
70
73
76
75
75
73
75
75
75
78
78
81
79

Pressure (mb)

992
992
992
993
993
993
994
994
995
995
995
996
996
997
997
997
997
997
997
997
997
997
997
997

Ozone (du)

322
322
321
323
325
327
328
329
330
330
331
331
332
332
332
332
333
333
333
333
333
333
333
334

Sunday 30

Waxing Gibbous 76%

12:20

01:34

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
16 Bad
17 Bad
18 Bad
19 Bad
20 Bad
21 Bad
22 Bad
23 Bad

Sun - Rise: N/A, Set: N/A, Transit: 11:44. Moon - Rise: 12:20, Set: 01:34. Civil Dark: N/A - N/A. Nautical Dark: 14:06 - 09:23. Astro Dark: 16:38 - 06:50

Total Clouds (% Sky Obscured)

70
64
57
53
37
25
17
19
18
25
38
52
64
69
75
81
75
70
66
67
69
71
66
64

Low Clouds (% Sky Obscured)

70
64
57
53
37
25
17
19
18
25
38
52
64
69
75
81
75
70
66
67
69
71
66
64

Medium Clouds (% Sky Obscured)

55
64
57
53
37
25
17
19
10
5
0
0
0
0
0
0
3
11
14
12
10
8
7
7

High Clouds (% Sky Obscured)

65
64
57
53
37
25
17
19
18
20
16
12
8
23
39
63
73
70
66
67
69
71
66
56

ISS Passover

Visibility (miles)

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

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
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow

Precipitation Probability (%)

3
25
37
48
57
60
77
95
95
95
95
95
95
95
94
81
78
78
83
72
65
62
50
36

Precipitation Amount (mm)

0
0
0
0.2
0.2
0.2
0.5
0.9
1.2
1.8
1.3
1.5
1.8
1.2
0.7
0.6
0.5
0.5
0.7
0.5
0.4
0.4
0.2
0.1

Wind Speed/Direction (mph)

7
7
7
7
8
7
7
8
7
7
7
6
6
5
5
5
5
6
6
6
7
8
10
10

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-14
-13
-16
-16
-17
-17
-18
-18
-18
-18
-18
-19
-19
-19
-19
-19
-17
-18
-17
-17
-17
-17
-17
-17

Dew Point (°C)

-15
-15
-16
-16
-18
-18
-18
-18
-19
-19
-19
-19
-19
-20
-18
-18
-17
-17
-17
-17
-17
-17
-17
-17

Relative Humidity (%)

78
78
75
74
74
74
73
76
75
78
77
78
80
79
76
76
76
76
78
78
78
78
78
76

Pressure (mb)

997
997
996
996
996
995
995
995
994
994
993
993
993
992
992
992
992
992
993
993
993
994
994
995

Ozone (du)

335
336
337
337
338
339
339
339
341
342
343
344
345
345
346
346
346
346
345
345
346
347
347
348

Monday 1

Waxing Gibbous 86%

10:31

05:13

Sun - Rise: N/A, Set: N/A, Transit: 11:45. Moon - Rise: 10:31, Set: 05:13. Civil Dark: N/A - N/A. Nautical Dark: 14:01 - 09:28. Astro Dark: 16:35 - 06:54

Total Clouds (% Sky Obscured)

Low Clouds (% Sky Obscured)

Medium Clouds (% Sky Obscured)

High Clouds (% Sky Obscured)

ISS Passover

Visibility (miles)

Fog (%)

Precipitation Type

Precipitation Probability (%)

Precipitation Amount (mm)

Wind Speed/Direction (mph)

Chance of Frost

Temperature (°C)

Feels Like (°C)

Dew Point (°C)

Relative Humidity (%)

Pressure (mb)

Ozone (du)

Forecast for Longyearbyen, Spitsbergen, Svalbard and Jan Mayen (78.15,16.04)

Generated: 25/11/25 00:18:41. Forecast: 25/11/25 to 01/12/25. Timezone: UTC+1.00