Clear Outside v1.0 - International Weather Forecasts For Astronomers

Friday 5

Full Moon 98%

No Rise

No Set

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 OK
18 OK
19 OK
20 OK
21 OK
22 OK
23 OK
00 Bad
01 Bad

Sun - Rise: N/A, Set: N/A, Transit: 11:46. Moon - Rise: No Rise, Set: No Set. Civil Dark: N/A - N/A. Nautical Dark: 13:41 - 09:51. Astro Dark: 16:26 - 07:07

Total Clouds (% Sky Obscured)

88
83
91
93
97
98
97
97
95
93
92
91
90
81
62
42
44
35
26
18
23
39
73
73

Low Clouds (% Sky Obscured)

62
46
74
90
95
86
81
82
78
77
78
79
79
70
60
42
44
35
23
16
22
39
68
68

Medium Clouds (% Sky Obscured)

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

High Clouds (% Sky Obscured)

0
1
5
7
7
8
4
10
3
4
4
23
44
17
3
2
4
3
3
3
4
3
3
3

ISS Passover

Visibility (miles)

0
0
1
6
6
0
0
0
0
0
0
0
0
1
5
8
8
8
9
9
9
9
9
9

Fog (%)

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

Precipitation Type

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

Precipitation Probability (%)

21
14
10
17
31
38
36
26
19
16
12
11
3
2
3
6
3
3
4
5
6
7
9
5

Precipitation Amount (mm)

0
0
0
0
0
0
0.1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

-10
-10
-10
-10
-10
-10
-10
-10
-10
-10
-9
-10
-10
-11
-11
-11
-12
-12
-12
-13
-13
-13
-13
-13

Feels Like (°C)

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

Dew Point (°C)

-11
-11
-11
-11
-12
-12
-11
-11
-11
-11
-11
-11
-12
-12
-13
-13
-15
-15
-15
-16
-16
-16
-16
-16

Relative Humidity (%)

90
90
88
88
86
88
90
90
90
88
90
90
88
88
85
81
79
79
78
76
76
78
79
79

Pressure (mb)

1022
1022
1022
1022
1022
1022
1023
1023
1024
1024
1025
1025
1025
1026
1026
1026
1027
1027
1028
1028
1028
1028
1029
1029

Ozone (du)

315
315
313
311
314
316
314
313
311
308
307
308
309
306
302
299
298
298
298
298
300
302
303
305

Saturday 6

Waning Gibbous 94%

No Rise

No Set

02 OK
03 OK
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
00 Bad
01 Bad

Sun - Rise: N/A, Set: N/A, Transit: 11:47. Moon - Rise: No Rise, Set: No Set. Civil Dark: N/A - N/A. Nautical Dark: 13:37 - 09:57. Astro Dark: 16:24 - 07:09

Total Clouds (% Sky Obscured)

33
34
62
76
78
83
86
71
72
77
79
66
51
59
82
92
89
92
98
98
100
100
100
99

Low Clouds (% Sky Obscured)

33
34
59
66
67
70
74
68
64
56
54
50
35
35
30
49
40
47
71
68
60
58
84
95

Medium Clouds (% Sky Obscured)

0
0
3
57
50
21
36
0
49
57
60
57
51
48
12
13
23
25
62
98
100
100
99
89

High Clouds (% Sky Obscured)

2
4
5
4
4
2
1
3
3
25
28
14
7
14
35
41
35
35
35
34
28
26
22
19

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
6
0
0
0
0

Fog (%)

1
0
0
0
0
0
1
0
0
0
0
0
0
0
1
2
1
1
1
1
5
3
1
1

Precipitation Type

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

Precipitation Probability (%)

3
3
4
4
7
7
4
4
6
12
12
5
5
6
9
7
8
11
13
26
32
39
35
31

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

-13
-13
-13
-13
-13
-13
-13
-13
-13
-12
-11
-11
-11
-10
-10
-10
-10
-10
-10
-9
-10
-10
-10
-9

Feels Like (°C)

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

Dew Point (°C)

-16
-17
-17
-17
-16
-16
-16
-15
-16
-15
-14
-14
-14
-13
-13
-13
-12
-12
-12
-11
-11
-11
-10
-10

Relative Humidity (%)

78
76
73
73
76
76
78
79
78
78
80
80
76
78
78
81
85
86
86
87
88
92
94
94

Pressure (mb)

1029
1029
1029
1028
1028
1028
1029
1029
1029
1029
1029
1029
1028
1028
1028
1028
1027
1027
1027
1027
1027
1026
1026
1026

Ozone (du)

306
306
305
305
304
302
300
299
298
297
297
296
296
297
297
296
295
294
294
294
295
297
299
301

Sunday 7

Waning Gibbous 94%

No Rise

No Set

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
00 Bad
01 Bad

Sun - Rise: N/A, Set: N/A, Transit: 11:47. Moon - Rise: No Rise, Set: No Set. Civil Dark: N/A - N/A. Nautical Dark: 13:32 - 10:02. Astro Dark: 16:22 - 07:12

Total Clouds (% Sky Obscured)

100
96
95
99
99
96
96
98
96
97
95
98
98
95
98
100
100
96
94
91
92
92
92
90

Low Clouds (% Sky Obscured)

100
84
87
93
96
92
93
98
94
92
88
93
94
91
97
100
100
94
89
83
85
86
85
85

Medium Clouds (% Sky Obscured)

83
64
67
68
79
81
82
88
77
70
64
60
29
12
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

17
16
5
6
5
5
5
11
7
8
42
40
18
5
3
3
3
3
3
4
6
4
3
2

ISS Passover

Visibility (miles)

0
0
0
0
0
1
1
0
1
0
0
0
1
1
1
0
0
0
1
1
1
0
1
1

Fog (%)

1
1
1
1
1
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
Snow
Snow
Snow
Snow
None
None
Snow
None
None
None
None

Precipitation Probability (%)

31
33
28
26
29
25
30
29
34
33
32
30
35
36
36
37
40
25
30
31
30
21
17
13

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

5
5
6
7
6
6
6
6
5
5
5
5
4
4
4
3
3
2
2
1
1
1
2
2

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

94
94
94
92
92
90
92
90
90
90
92
92
90
90
92
92
92
90
90
90
90
88
88
88

Pressure (mb)

1025
1025
1025
1024
1024
1024
1024
1023
1023
1023
1022
1022
1022
1021
1021
1020
1020
1020
1020
1020
1020
1020
1019
1019

Ozone (du)

300
299
298
297
297
296
297
299
300
301
301
301
299
298
300
301
301
301
302
302
302
303
303
303

Monday 8

Waning Gibbous 86%

No Rise

No Set

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
00 Bad
01 Bad

Sun - Rise: N/A, Set: N/A, Transit: 11:48. Moon - Rise: No Rise, Set: No Set. Civil Dark: N/A - N/A. Nautical Dark: 13:28 - 10:07. Astro Dark: 16:20 - 07:15

Total Clouds (% Sky Obscured)

90
89
88
86
86
88
88
86
88
90
90
92
91
92
92
92
92
91
91
92
93
94
95
95

Low Clouds (% Sky Obscured)

84
85
83
82
81
82
83
81
81
81
80
80
80
80
80
82
82
83
85
86
88
87
85
85

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
2
5
7
13
20
26
19
12
11
13
10
14
18
21
24
30

High Clouds (% Sky Obscured)

5
7
6
12
11
2
2
2
5
10
13
10
14
21
35
49
56
41
29
25
19
14
12
13

ISS Passover

Visibility (miles)

1
1
2
2
2
2
2
3
3
2
2
1
2
2
1
1
2
3
3
2
2
3
5
4

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
None

Precipitation Probability (%)

19
11
14
12
9
11
15
13
15
12
9
9
10
12
11
11
9
13
16
15
20
23
20
26

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

Wind Speed/Direction (mph)

3
3
3
4
4
4
5
5
5
5
5
5
4
4
4
4
4
4
4
4
4
4
4
5

Chance of Frost

Temperature (°C)

-9
-10
-10
-10
-10
-11
-11
-11
-11
-11
-11
-12
-12
-12
-12
-12
-12
-13
-13
-13
-13
-13
-13
-14

Feels Like (°C)

-13
-13
-14
-14
-14
-15
-15
-16
-15
-16
-15
-16
-16
-17
-17
-16
-17
-17
-18
-18
-18
-18
-18
-18

Dew Point (°C)

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

Relative Humidity (%)

88
88
88
86
88
88
88
88
88
88
88
86
86
86
86
86
84
84
84
84
84
84
84
84

Pressure (mb)

1019
1019
1019
1019
1019
1019
1019
1019
1019
1019
1019
1019
1019
1019
1019
1019
1019
1019
1019
1019
1020
1020
1020
1020

Ozone (du)

302
303
304
305
307
307
306
305
304
303
303
303
304
304
304
306
307
308
308
308
308
310
311
311

Tuesday 9

Waning Gibbous 78%

No Rise

No Set

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
00 Bad
01 Bad

Sun - Rise: N/A, Set: N/A, Transit: 11:48. Moon - Rise: No Rise, Set: No Set. Civil Dark: N/A - N/A. Nautical Dark: 13:24 - 10:12. Astro Dark: 16:19 - 07:17

Total Clouds (% Sky Obscured)

95
96
95
94
94
96
97
98
99
99
100
99
98
99
99
99
99
99
99
99
99
99
99
99

Low Clouds (% Sky Obscured)

87
86
86
85
83
84
87
87
83
81
80
75
69
64
64
69
73
79
85
91
92
94
95
93

Medium Clouds (% Sky Obscured)

30
32
27
26
35
36
37
57
72
84
96
93
89
90
90
90
85
88
81
71
73
77
90
85

High Clouds (% Sky Obscured)

5
6
6
8
11
17
18
25
30
30
40
40
40
35
30
29
29
29
24
24
27
25
27
30

ISS Passover

Visibility (miles)

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

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

Precipitation Probability (%)

29
29
31
31
30
28
26
23
26
27
27
40
35
25
28
29
30
32
33
34
37
38
38
39

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0.1
0
0
0
0
0
0
0
0
0.1
0.1
0.1
0.1

Wind Speed/Direction (mph)

4
4
4
4
5
5
5
5
5
5
5
5
5
5
6
6
6
6
6
6
6
6
6
5

Chance of Frost

Temperature (°C)

-13
-14
-14
-14
-13
-13
-13
-13
-13
-13
-13
-13
-13
-13
-12
-12
-12
-13
-12
-13
-13
-12
-12
-12

Feels Like (°C)

-17
-18
-17
-18
-18
-17
-17
-17
-17
-17
-16
-17
-17
-17
-16
-17
-17
-17
-17
-17
-17
-17
-17
-17

Dew Point (°C)

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

Relative Humidity (%)

84
84
84
84
84
84
84
86
84
84
83
83
83
83
83
81
81
81
79
79
81
83
85
85

Pressure (mb)

1019
1019
1019
1019
1019
1019
1019
1020
1020
1020
1020
1020
1020
1020
1020
1020
1020
1020
1020
1020
1020
1019
1019
1019

Ozone (du)

311
312
313
315
318
319
320
320
321
321
320
321
319
318
317
319
321
323
324
324
325
324
324
323

Wednesday 10

Waning Gibbous 68%

19:29

15:20

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
00 Bad
01 Bad

Sun - Rise: N/A, Set: N/A, Transit: 11:48. Moon - Rise: 19:29, Set: 15:20. Civil Dark: N/A - N/A. Nautical Dark: 13:19 - 10:17. Astro Dark: 16:17 - 07:20

Total Clouds (% Sky Obscured)

100
100
99
98
97
96
96
95
87
78
68
60
53
49
52
56
62
63
67
69
70
70
68
65

Low Clouds (% Sky Obscured)

92
90
86
82
79
81
82
85
83
78
68
60
53
49
52
56
61
57
57
64
66
65
68
65

Medium Clouds (% Sky Obscured)

84
83
78
69
54
51
54
59
41
24
6
7
7
8
7
11
10
10
10
10
8
7
5
4

High Clouds (% Sky Obscured)

32
30
32
29
23
21
20
18
14
9
5
4
4
2
2
1
1
1
1
2
3
4
5
6

ISS Passover

Visibility (miles)

0
0
1
2
4
5
6
7
8
6
5
3
2
2
1
1
1
1
1
1
1
1
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

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

Precipitation Probability (%)

39
35
34
30
20
25
27
24
33
37
37
38
41
42
45
45
44
40
34
27
27
25
21
19

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5

Chance of Frost

Temperature (°C)

-12
-12
-12
-12
-12
-13
-13
-13
-14
-13
-13
-14
-14
-13
-13
-14
-13
-13
-13
-13
-14
-14
-14
-14

Feels Like (°C)

-16
-16
-16
-16
-16
-16
-18
-18
-19
-18
-17
-16
-17
-16
-16
-16
-16
-16
-16
-16
-16
-16
-17
-17

Dew Point (°C)

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

Relative Humidity (%)

86
86
88
86
86
84
84
84
83
83
83
83
84
86
86
86
88
88
88
88
86
86
84
83

Pressure (mb)

1019
1019
1019
1019
1019
1019
1019
1019
1019
1018
1018
1018
1018
1018
1018
1018
1018
1017
1017
1017
1017
1017
1017
1017

Ozone (du)

321
319
317
317
317
317
318
320
321
323
325
327
326
326
325
325
324
323
321
320
318
320
321
323

Thursday 11

Third Quarter 57%

22:59

13:26

Sun - Rise: N/A, Set: N/A, Transit: 11:49. Moon - Rise: 22:59, Set: 13:26. Civil Dark: N/A - N/A. Nautical Dark: 13:16 - 10:22. Astro Dark: 16:16 - 07:22

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: 05/12/25 02:53:58. Forecast: 05/12/25 to 11/12/25. Timezone: UTC+1.00