Clear Outside v1.0 - International Weather Forecasts For Astronomers

Friday 26

Waxing Crescent 38%

11:47

23:26

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

Sun - Rise: 09:27, Set: 15:19, Transit: 12:23. Moon - Rise: 11:47, Set: 23:26. Civil Dark: 16:17 - 08:29. Nautical Dark: 17:14 - 07:32. Astro Dark: 18:05 - 06:40

Total Clouds (% Sky Obscured)

14
2
0
0
0
0
21
31
17
5
57
79
49
35
34
35
35
40
35
43
55
61
73
98

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
21
31
17
5
57
79
49
35
34
35
35
40
35
43
55
61
73
74

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
2
0
0
0
0
0
0
0
0
32
76

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
2
1
0
0
0
0
0
0
0
0
0
0
0
0
0
44
17

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
21
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 (%)

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 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)

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

Chance of Frost

Temperature (°C)

2
2
2
2
2
2
1
1
1
1
2
2
2
1
1
1
1
1
2
1
1
1
1
1

Feels Like (°C)

-2
-1
-1
-1
-1
-1
-1
-1
-2
-1
-0
-0
0
-0
-0
-0
-0
-0
1
-0
-0
-0
-1
-1

Dew Point (°C)

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

Relative Humidity (%)

79
78
74
73
72
71
71
70
71
74
74
78
86
91
93
94
94
94
94
96
96
96
96
96

Pressure (mb)

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

Ozone (du)

276
274
275
275
277
273
270
267
265
264
263
263
263
262
262
263
266
268
269
272
274
273
275
272

Saturday 27

First Quarter 49%

11:46

01:00

02 Bad
03 Bad
04 Bad
05 Bad
06 Bad
07 Bad
08 Bad
09 Bad
10 Bad
11 OK
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: 09:27, Set: 15:20, Transit: 12:23. Moon - Rise: 11:46, Set: 01:00. Civil Dark: 16:17 - 08:29. Nautical Dark: 17:15 - 07:32. Astro Dark: 18:06 - 06:40

Total Clouds (% Sky Obscured)

99
100
100
100
100
100
100
100
78
39
48
59
71
96
53
49
54
55
63
82
62
61
76
74

Low Clouds (% Sky Obscured)

73
75
78
91
70
67
48
55
65
39
48
58
71
96
48
46
52
55
55
70
54
54
73
71

Medium Clouds (% Sky Obscured)

96
100
100
100
100
100
100
100
15
0
15
1
0
0
0
0
15
0
9
29
20
27
19
0

High Clouds (% Sky Obscured)

20
100
100
100
20
0
15
1
0
0
0
0
0
0
0
0
0
0
0
0
3
0
0
0

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
0
9
3
9
9
9
9

Fog (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
1
0
0
1
1
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 (%)

0
0
0
0
6
21
15
10
3
0
1
13
4
18
5
2
23
20
10
25
6
3
1
0

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)

7
7
7
7
8
9
11
13
15
16
17
17
16
16
16
16
17
18
19
19
20
21
21
22

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-2
-2
-2
-2
-2
-1
-2
-2
-2
-2
-2
-3
-4
-5
-6
-6
-6
-6
-6
-6
-8
-8
-9
-9

Dew Point (°C)

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

Relative Humidity (%)

96
94
96
94
93
93
91
86
79
69
61
65
65
65
61
64
78
92
75
83
80
65
66
64

Pressure (mb)

1017
1016
1014
1012
1011
1009
1007
1006
1004
1002
1001
1000
999
999
999
999
998
999
999
1000
1001
1002
1003
1004

Ozone (du)

274
274
272
275
282
290
295
306
313
334
352
363
373
375
374
380
379
385
385
388
388
388
380
371

Sunday 28

Waxing Gibbous 60%

11:45

No Set

02 Bad
03 Bad
04 Bad
05 Bad
06 OK
07 OK
08 OK
09 Good
10 Good
11 Good
12 Good
13 OK
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: 09:27, Set: 15:21, Transit: 12:24. Moon - Rise: 11:45, Set: No Set. Civil Dark: 16:18 - 08:29. Nautical Dark: 17:15 - 07:32. Astro Dark: 18:07 - 06:40

Total Clouds (% Sky Obscured)

51
48
48
41
28
29
24
0
0
0
6
41
69
74
73
68
76
83
81
80
78
76
74
72

Low Clouds (% Sky Obscured)

46
42
37
38
28
21
22
0
0
0
0
39
55
59
59
66
76
83
81
80
78
76
74
72

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
4
1
17
28
36
18
15
15
15
1
2
1
0
0

High Clouds (% Sky Obscured)

0
0
0
0
2
29
7
0
0
0
1
2
10
20
20
10
1
1
0
0
0
0
0
0

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
None
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
0
0
0
0
0
0
0
0
0
1
3
3
4
6
7
7
6
5
20
14
9

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)

22
21
20
20
20
19
17
16
16
14
13
12
11
10
8
9
8
8
10
10
9
9
9
8

Chance of Frost

Temperature (°C)

-1
-2
-2
-2
-2
-2
-3
-3
-3
-3
-2
-2
-2
-2
-2
-2
-2
-1
1
1
1
1
1
1

Feels Like (°C)

-10
-9
-9
-9
-9
-9
-10
-8
-8
-8
-8
-7
-6
-6
-6
-6
-6
-5
-4
-4
-4
-3
-3
-2

Dew Point (°C)

-7
-7
-8
-8
-9
-9
-10
-10
-11
-11
-11
-11
-11
-11
-10
-9
-7
-3
-2
-1
-1
-1
-1
-1

Relative Humidity (%)

64
67
64
64
61
58
56
55
54
53
51
50
50
51
54
61
68
83
86
88
91
88
88
88

Pressure (mb)

1005
1006
1007
1007
1008
1009
1010
1010
1011
1011
1010
1010
1010
1009
1008
1008
1007
1006
1005
1004
1004
1003
1002
1002

Ozone (du)

361
352
341
325
308
309
318
334
358
368
369
364
359
356
359
360
364
369
372
376
369
369
366
358

Monday 29

Waxing Gibbous 71%

11:45

02:40

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

Sun - Rise: 09:26, Set: 15:22, Transit: 12:24. Moon - Rise: 11:45, Set: 02:40. Civil Dark: 16:19 - 08:29. Nautical Dark: 17:16 - 07:32. Astro Dark: 18:08 - 06:40

Total Clouds (% Sky Obscured)

49
27
4
3
1
0
11
23
34
35
35
37
24
12
1
19
28
35
40
40
45
52
54
58

Low Clouds (% Sky Obscured)

49
27
4
3
1
0
6
13
18
24
31
36
23
11
0
19
28
35
40
35
39
40
39
39

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
8
14
20
14
6
0
0
0
1
14
28
0
9
2
3
16
28
39

High Clouds (% Sky Obscured)

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

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
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

5
5
1
0
0
0
0
0
0
0
0
0
0
0
0
0
1
11
3
4
1
3
3
2

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)

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

Chance of Frost

Temperature (°C)

1
1
0
-1
-2
-2
-2
-2
-3
-3
-3
-3
-3
-4
-4
-5
-5
-5
-5
-5
-5
-4
-4
-5

Feels Like (°C)

-2
-4
-4
-4
-4
-5
-5
-6
-8
-7
-7
-7
-7
-7
-8
-8
-10
-10
-9
-10
-8
-8
-8
-9

Dew Point (°C)

-0
-1
-2
-2
-3
-4
-5
-8
-11
-12
-12
-13
-14
-14
-14
-14
-14
-12
-10
-11
-11
-11
-12
-11

Relative Humidity (%)

91
92
89
91
91
87
81
65
52
50
49
45
44
44
44
46
47
55
65
62
60
58
56
62

Pressure (mb)

1001
1001
1001
1001
1001
1001
1001
1001
1001
1001
1000
1000
1000
1000
1000
999
999
999
998
998
998
998
999
999

Ozone (du)

352
350
350
350
347
350
352
358
362
358
364
371
383
391
384
379
380
374
365
366
364
367
370
373

Tuesday 30

Waxing Gibbous 82%

11:46

04:27

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

Sun - Rise: 09:26, Set: 15:23, Transit: 12:25. Moon - Rise: 11:46, Set: 04:27. Civil Dark: 16:21 - 08:29. Nautical Dark: 17:17 - 07:32. Astro Dark: 18:09 - 06:40

Total Clouds (% Sky Obscured)

78
74
89
84
93
91
90
92
92
74
49
29
35
45
59
62
62
61
58
55
53
67
80
91

Low Clouds (% Sky Obscured)

48
53
58
62
68
71
61
54
45
41
37
29
30
27
25
32
39
45
48
50
53
66
80
91

Medium Clouds (% Sky Obscured)

64
52
79
73
85
79
77
84
57
40
21
2
16
31
47
43
36
30
20
10
0
19
38
57

High Clouds (% Sky Obscured)

0
0
0
1
1
1
3
1
2
4
1
0
3
6
9
15
10
8
3
1
0
0
0
0

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
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

5
5
3
8
8
5
6
4
1
1
0
0
0
0
0
0
0
0
1
2
1
13
19
23

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)

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

Chance of Frost

Temperature (°C)

-5
-4
-4
-4
-4
-4
-4
-4
-4
-4
-4
-4
-4
-4
-5
-5
-5
-5
-5
-5
-5
-5
-5
-5

Feels Like (°C)

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

Dew Point (°C)

-10
-10
-10
-10
-9
-11
-10
-8
-9
-10
-11
-12
-12
-12
-12
-13
-13
-13
-13
-12
-12
-12
-11
-11

Relative Humidity (%)

65
66
65
65
68
59
65
75
69
59
57
54
54
54
54
54
53
54
55
57
59
60
61
61

Pressure (mb)

998
998
998
998
998
998
998
998
998
997
997
997
997
996
996
996
995
995
995
995
994
994
994
993

Ozone (du)

375
383
384
386
389
392
397
399
400
403
407
409
410
409
408
407
408
409
410
408
405
402
394
387

Wednesday 31

Waxing Gibbous 90%

11:51

06:22

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: 09:26, Set: 15:25, Transit: 12:25. Moon - Rise: 11:51, Set: 06:22. Civil Dark: 16:22 - 08:29. Nautical Dark: 17:18 - 07:32. Astro Dark: 18:10 - 06:40

Total Clouds (% Sky Obscured)

84
78
70
77
85
93
94
95
95
90
86
84
91
96
99
98
96
92
82
75
70
67
65
62

Low Clouds (% Sky Obscured)

81
74
63
65
64
68
68
69
70
69
67
66
72
81
88
85
83
83
78
74
68
62
41
24

Medium Clouds (% Sky Obscured)

57
54
54
63
76
85
80
76
72
64
55
48
63
80
96
82
66
50
37
22
4
4
3
3

High Clouds (% Sky Obscured)

0
0
0
0
0
0
3
4
2
4
4
4
12
22
32
24
12
0
0
0
0
0
0
0

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
8
7
7
7
8
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
None

Precipitation Probability (%)

28
28
25
22
19
15
14
11
3
8
10
10
13
15
16
17
18
17
16
13
9
10
10
8

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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

-11
-10
-10
-9
-9
-8
-8
-9
-10
-10
-10
-10
-9
-10
-11
-12
-12
-12
-11
-12
-12
-12
-12
-13

Relative Humidity (%)

62
66
70
74
77
82
85
82
77
73
73
74
76
71
69
64
67
68
70
70
70
70
70
67

Pressure (mb)

993
993
993
993
993
993
993
993
993
994
994
994
994
994
994
994
995
995
995
995
995
995
995
996

Ozone (du)

379
375
371
367
372
378
384
385
385
386
385
385
384
384
384
384
380
375
370
367
364
361
360
359

Thursday 1

Waxing Gibbous 96%

12:06

08:20

Sun - Rise: 09:25, Set: 15:26, Transit: 12:26. Moon - Rise: 12:06, Set: 08:20. Civil Dark: 16:23 - 08:28. Nautical Dark: 17:20 - 07:32. Astro Dark: 18:11 - 06:40

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 Vols, Helsinki, Finland (60.17,24.39)

Generated: 26/12/25 02:25:55. Forecast: 26/12/25 to 01/01/26. Timezone: UTC+2.00