Clear Outside v1.0 - International Weather Forecasts For Astronomers

Wednesday 31

Waxing Gibbous 91%

13:56

07:13

15 Bad
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

Sun - Rise: 08:49, Set: 16:35, Transit: 12:43. Moon - Rise: 13:56, Set: 07:13. Civil Dark: 17:16 - 08:09. Nautical Dark: 18:01 - 07:25. Astro Dark: 18:42 - 06:43

Total Clouds (% Sky Obscured)

91
95
96
96
95
83
73
84
100
100
94
100
81
89
100
100
100
100
100
82
100
91
100
100

Low Clouds (% Sky Obscured)

91
95
91
90
85
80
64
77
100
100
94
100
80
81
100
100
83
90
84
75
60
64
50
77

Medium Clouds (% Sky Obscured)

10
0
0
0
0
0
0
0
0
0
0
0
2
4
4
25
66
100
98
30
30
48
69
99

High Clouds (% Sky Obscured)

8
6
38
55
76
29
27
32
63
1
11
1
1
38
53
91
97
100
99
29
90
7
20
81

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
6
9
5
8
7
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
Very Light Rain
Light Rain
None
None
Very Light Rain
None
Light Rain

Precipitation Probability (%)

0
0
5
12
12
0
0
0
3
18
29
23
20
7
6
17
17
53
83
51
43
53
38
66

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.3
0.7
0
0
0.2
0
0.5

Wind Speed/Direction (mph)

13
13
12
12
11
12
12
12
12
12
14
15
16
17
18
18
19
20
21
21
22
23
20
22

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

78
76
72
72
79
79
79
77
80
80
82
85
82
78
76
78
79
76
86
90
83
79
71
69

Pressure (mb)

1022
1022
1021
1020
1020
1019
1019
1018
1017
1015
1014
1013
1012
1011
1009
1008
1006
1005
1004
1004
1003
1002
1001
1001

Ozone (du)

316
317
315
308
302
301
303
303
295
292
289
290
289
289
283
282
293
310
312
324
355
376
389
401

Thursday 1

Waxing Gibbous 97%

14:57

08:31

15 Bad
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

Sun - Rise: 08:49, Set: 16:37, Transit: 12:43. Moon - Rise: 14:57, Set: 08:31. Civil Dark: 17:17 - 08:08. Nautical Dark: 18:01 - 07:24. Astro Dark: 18:43 - 06:43

Total Clouds (% Sky Obscured)

88
98
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)

55
60
73
72
82
83
69
82
66
78
79
71
76
61
65
53
54
64
53
44
57
68
62
70

Medium Clouds (% Sky Obscured)

81
93
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
90
100
100

High Clouds (% Sky Obscured)

76
96
58
20
12
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

ISS Passover

Visibility (miles)

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

Very Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Very Light Rain
Sleet
Snow
Very Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Snow
Snow
Light Rain
Light Rain
Very Light Rain
Light Rain

Precipitation Probability (%)

60
64
68
79
77
87
79
80
74
71
66
58
60
65
80
81
73
67
76
66
71
87
67
73

Precipitation Amount (mm)

0.3
0.4
0.4
0.5
0.5
0.7
0.5
0.5
0.4
0.4
0.3
0.2
0.3
0.3
0.6
0.6
0.4
0.4
0.5
0.3
0.4
0.6
0.3
0.5

Wind Speed/Direction (mph)

22
21
21
21
22
20
20
19
19
19
21
18
19
20
19
21
21
17
17
19
22
18
15
15

Chance of Frost

Temperature (°C)

6
6
5
5
5
5
4
5
4
4
4
4
4
4
4
3
3
3
3
3
3
3
4
4

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

75
72
76
72
80
88
83
79
66
64
72
72
67
66
67
76
76
72
67
64
76
80
69
66

Pressure (mb)

1001
1000
1000
1000
999
999
999
999
998
998
998
998
998
998
997
997
997
997
998
998
998
997
997
997

Ozone (du)

403
404
391
375
369
362
358
352
357
370
378
378
378
384
387
388
390
395
397
397
397
398
404
411

Friday 2

Waxing Gibbous 100%

14:57

09:28

15 Bad
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

Sun - Rise: 08:49, Set: 16:38, Transit: 12:44. Moon - Rise: 14:57, Set: 09:28. Civil Dark: 17:19 - 08:08. Nautical Dark: 18:02 - 07:24. Astro Dark: 18:44 - 06:43

Total Clouds (% Sky Obscured)

100
96
100
100
100
67
100
98
97
98
92
100
100
100
90
80
100
100
94
100
100
100
83
100

Low Clouds (% Sky Obscured)

72
33
48
36
56
34
52
46
45
41
36
31
40
22
37
41
41
51
46
41
30
31
35
41

Medium Clouds (% Sky Obscured)

100
95
100
100
100
53
100
88
88
93
68
100
100
100
80
45
100
100
56
100
100
100
49
100

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
4
3
4
26
0
3
0
3

ISS Passover

Visibility (miles)

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

Snow
Snow
Snow
Snow
Snow
Sleet
Snow
None
Sleet
Snow
Snow
Sleet
None
None
None
None
Snow
None
Sleet
None
None
Snow
Snow
Snow

Precipitation Probability (%)

58
49
56
61
62
63
48
35
49
48
47
68
35
46
25
55
70
47
63
34
49
51
43
60

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

18
16
16
14
12
11
14
11
13
11
12
11
12
12
11
7
8
9
9
8
4
11
10
11

Chance of Frost

Temperature (°C)

3
3
2
2
2
2
2
1
1
2
2
1
1
2
2
1
1
1
1
1
2
3
3
3

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

62
64
69
76
76
72
71
80
80
76
69
69
71
69
71
77
80
81
84
86
83
65
62
60

Pressure (mb)

997
997
998
998
998
998
999
999
999
999
999
999
999
999
999
999
999
1000
1001
1001
1002
1002
1002
1003

Ozone (du)

419
423
423
423
426
432
434
428
423
418
410
403
396
399
403
405
405
405
403
402
405
411
414
412

Saturday 3

Full Moon 99%

16:18

10:05

15 Bad
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

Sun - Rise: 08:49, Set: 16:39, Transit: 12:44. Moon - Rise: 16:18, Set: 10:05. Civil Dark: 17:20 - 08:08. Nautical Dark: 18:03 - 07:24. Astro Dark: 18:45 - 06:43

Total Clouds (% Sky Obscured)

100
93
100
100
84
100
88
73
50
36
37
35
33
38
42
50
58
56
72
71
68
67
69
62

Low Clouds (% Sky Obscured)

43
40
45
12
22
32
41
35
23
18
20
22
26
26
26
25
32
35
39
43
38
39
39
43

Medium Clouds (% Sky Obscured)

100
68
100
99
45
100
43
30
26
30
37
35
33
38
42
50
58
46
68
60
55
53
45
31

High Clouds (% Sky Obscured)

2
1
1
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)

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

None
Snow
Snow
None
None
None
None
None
None
None
None
Snow
Snow
Sleet
Snow
None
Sleet
Snow
Snow
Snow
None
Snow
None
None

Precipitation Probability (%)

43
65
64
50
25
39
30
28
14
32
46
75
64
65
72
48
58
48
51
51
43
43
39
31

Precipitation Amount (mm)

0
0.4
0.3
0
0
0
0
0
0
0
0
0.5
0.3
0.5
0.5
0
0.2
0.2
0.2
0.2
0
0.1
0
0

Wind Speed/Direction (mph)

13
10
13
10
8
11
14
13
11
9
10
9
8
6
6
6
6
6
5
7
7
7
8
8

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-4
-3
-4
-3
-3
-3
-5
-3
-3
-3
-4
-4
-4
-4
-4
-4
-4
-4
-4
-4
-3
-2
-2
-2

Dew Point (°C)

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

Relative Humidity (%)

73
76
72
73
76
66
65
59
61
65
69
78
80
83
87
89
86
84
81
80
77
74
68
72

Pressure (mb)

1003
1003
1004
1004
1004
1004
1005
1005
1006
1007
1007
1007
1008
1008
1009
1009
1009
1010
1010
1011
1011
1012
1012
1012

Ozone (du)

412
411
408
405
399
397
397
395
395
395
392
388
385
382
384
385
385
390
382
375
378
382
390
392

Sunday 4

Waning Gibbous 96%

17:50

10:28

15 Bad
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 OK

Sun - Rise: 08:48, Set: 16:40, Transit: 12:45. Moon - Rise: 17:50, Set: 10:28. Civil Dark: 17:21 - 08:08. Nautical Dark: 18:05 - 07:24. Astro Dark: 18:46 - 06:43

Total Clouds (% Sky Obscured)

59
43
67
85
61
85
91
93
97
100
100
100
100
100
100
100
100
100
100
74
50
35
35
27

Low Clouds (% Sky Obscured)

44
43
50
54
53
55
54
50
45
52
42
36
31
24
18
11
17
23
28
26
25
23
15
9

Medium Clouds (% Sky Obscured)

25
8
30
46
33
62
75
85
93
100
100
100
100
100
100
100
100
100
100
74
50
35
35
27

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
18
36
53
41
29
16
27
38
49
32
16
0
0
0
0
1
2

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
8
7
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

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 (%)

26
21
22
8
15
21
22
28
30
32
47
43
36
38
38
35
35
34
33
38
38
36
33
27

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

69
76
84
84
81
83
86
84
84
84
86
86
86
84
84
84
84
84
83
83
80
79
76
77

Pressure (mb)

1012
1013
1013
1013
1014
1014
1014
1014
1015
1015
1015
1015
1015
1015
1015
1015
1015
1015
1016
1016
1016
1016
1017
1017

Ozone (du)

390
393
391
393
397
399
397
395
395
389
385
386
388
390
389
389
388
395
402
408
407
406
404
399

Monday 5

Waning Gibbous 91%

19:21

10:45

15 OK
16 OK
17 OK
18 OK
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

Sun - Rise: 08:48, Set: 16:41, Transit: 12:45. Moon - Rise: 19:21, Set: 10:45. Civil Dark: 17:22 - 08:07. Nautical Dark: 18:06 - 07:24. Astro Dark: 18:47 - 06:42

Total Clouds (% Sky Obscured)

21
27
30
32
48
62
77
83
91
100
93
87
80
79
77
75
79
85
89
92
95
98
94
91

Low Clouds (% Sky Obscured)

4
9
13
17
24
30
34
48
66
85
78
71
64
62
60
58
67
78
87
88
89
90
70
52

Medium Clouds (% Sky Obscured)

21
17
8
1
26
52
77
83
91
100
93
87
80
65
50
35
33
33
32
47
62
78
82
84

High Clouds (% Sky Obscured)

3
5
9
14
26
38
48
26
13
0
0
0
0
1
1
2
1
1
0
2
7
10
10
10

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 (%)

21
18
15
9
12
12
7
31
40
46
49
49
47
47
42
19
26
27
22
30
35
42
44
38

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)

6
5
5
6
7
8
9
10
11
12
13
12
11
10
9
9
8
7
7
6
7
9
10
10

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

79
80
81
80
81
80
79
77
77
79
79
80
80
80
80
82
82
80
82
80
80
80
79
78

Pressure (mb)

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

Ozone (du)

394
388
384
379
374
377
379
382
382
383
383
379
375
371
366
360
355
355
356
356
358
359
361
362

Tuesday 6

Waning Gibbous 83%

20:48

10:57

15 Bad
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

Sun - Rise: 08:47, Set: 16:43, Transit: 12:46. Moon - Rise: 20:48, Set: 10:57. Civil Dark: 17:23 - 08:07. Nautical Dark: 18:07 - 07:24. Astro Dark: 18:48 - 06:42

Total Clouds (% Sky Obscured)

88
89
91
94
94
92
91
90
90
89
92
96
100
100
100
100

Low Clouds (% Sky Obscured)

33
47
60
72
50
27
0
23
48
71
76
83
88
92
96
100

Medium Clouds (% Sky Obscured)

88
89
90
91
92
92
91
90
87
83
90
94
98
86
74
62

High Clouds (% Sky Obscured)

10
15
20
25
50
70
75
75
80
85
84
82
81
56
32
6

ISS Passover

Visibility (miles)

9
9
6
3
0
0
0
0
0
0
0
0
0
0
0
0

Fog (%)

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

Precipitation Type

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

Precipitation Probability (%)

28
24
24
28
53
70
74
64
54
34
41
42
40
30
24
15

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

0
0
0
0
0
-3
-3
-4
-4
-5
-4
-4
-4
-4
-4
-4

Dew Point (°C)

2
2
2
2
2
2
1
1
1
1
0
0
1
1
1
0

Relative Humidity (%)

78
78
83
89
96
96
96
96
96
96
96
96
98
98
98
96

Pressure (mb)

1017
1017
1016
1016
1016
1015
1015
1015
1015
1014
1014
1014
1014
1014
1014
1014

Ozone (du)

362
363
364
365
366
372
377
383
386
388
391
387
383
379
380
381

Forecast for Katwoude, Gemeente Waterland, Netherlands (52.47,5.07)

Generated: 31/12/25 14:56:22. Forecast: 31/12/25 to 06/01/26. Timezone: UTC+1.00