Clear Outside v1.0 - International Weather Forecasts For Astronomers

Saturday 20

New Moon 2%

10:26

16:13

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: 08:46, Set: 16:29, Transit: 12:38. Moon - Rise: 10:26, Set: 16:13. Civil Dark: 17:10 - 08:05. Nautical Dark: 17:54 - 07:21. Astro Dark: 18:35 - 06:40

Total Clouds (% Sky Obscured)

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

Low Clouds (% Sky Obscured)

79
82
85
84
90
92
92
88
82
76
77
69
58
45
57
57
64
69
53
39
54
44
30
0

Medium Clouds (% Sky Obscured)

100
100
100
100
100
100
99
95
91
61
85
92
92
68
83
56
50
48
95
70
56
94
62
31

High Clouds (% Sky Obscured)

94
92
100
100
100
100
100
98
83
100
100
87
100
61
63
60
70
95
100
100
100
96
100
80

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
44
47
39
32
19
3
0
0
1
1
0
0
3
1
0
0
0
3
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

85
86
83
83
84
88
91
93
94
96
96
96
96
94
94
94
94
94
94
91
87
85
82
81

Pressure (mb)

1014
1014
1013
1013
1012
1012
1012
1012
1012
1011
1011
1011
1011
1011
1011
1011
1011
1011
1012
1012
1012
1011
1011
1011

Ozone (du)

275
270
271
272
272
273
273
272
273
270
269
267
267
267
266
267
268
268
271
276
278
281
285
289

Sunday 21

Waxing Crescent 6%

10:55

17:20

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: 08:46, Set: 16:30, Transit: 12:38. Moon - Rise: 10:55, Set: 17:20. Civil Dark: 17:11 - 08:05. Nautical Dark: 17:55 - 07:22. Astro Dark: 18:36 - 06:40

Total Clouds (% Sky Obscured)

87
85
84
80
91
85
67
63
47
99
82
100
100
100
100
80
100
100
100
100
94
80
68
63

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
21
38
42
49
50
50
54
55
57
61
49
54
54
51

Medium Clouds (% Sky Obscured)

32
29
31
23
35
28
19
14
4
0
5
0
19
14
27
0
21
19
33
22
54
20
15
5

High Clouds (% Sky Obscured)

70
68
47
55
74
53
20
37
32
99
61
100
100
100
100
50
100
100
100
100
66
37
7
15

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
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)

8
8
8
8
9
10
11
11
11
11
10
11
12
12
11
11
10
10
9
10
10
10
9
9

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

7
7
5
5
5
4
4
4
3
3
3
2
2
2
1
1
1
1
0
1
2
2
3
3

Dew Point (°C)

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

Relative Humidity (%)

78
81
82
84
82
84
82
82
82
82
84
85
85
85
85
85
86
88
88
86
83
81
78
81

Pressure (mb)

1010
1010
1010
1010
1009
1009
1009
1009
1009
1009
1009
1009
1008
1008
1008
1008
1008
1009
1009
1010
1010
1010
1010
1010

Ozone (du)

290
291
290
291
293
296
295
299
301
304
305
307
307
310
313
315
315
316
319
321
322
323
328
331

Monday 22

Waxing Crescent 5%

11:17

18:35

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: 08:47, Set: 16:30, Transit: 12:39. Moon - Rise: 11:17, Set: 18:35. Civil Dark: 17:11 - 08:06. Nautical Dark: 17:55 - 07:22. Astro Dark: 18:36 - 06:41

Total Clouds (% Sky Obscured)

74
79
96
94
85
97
97
97
81
93
93
91
95
100
100
98
97
94
95
85
79
58
54
59

Low Clouds (% Sky Obscured)

42
51
62
52
55
63
52
58
60
67
71
64
73
77
77
81
87
93
94
85
79
58
54
59

Medium Clouds (% Sky Obscured)

19
21
59
61
18
3
7
12
26
32
18
16
13
0
33
26
17
9
0
0
0
0
0
0

High Clouds (% Sky Obscured)

40
35
37
26
53
91
91
89
16
19
25
50
41
100
100
82
64
50
39
33
32
9
7
8

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

4
3
3
3
3
3
3
2
3
2
3
3
3
3
3
3
3
3
3
3
3
3
3
3

Relative Humidity (%)

82
83
86
88
89
89
89
89
91
89
91
91
93
93
93
94
93
93
93
91
86
83
82
80

Pressure (mb)

1010
1010
1010
1011
1011
1011
1012
1012
1012
1012
1013
1013
1013
1013
1014
1014
1014
1015
1016
1016
1016
1017
1017
1017

Ozone (du)

332
334
337
339
341
346
350
351
354
356
359
360
359
360
359
361
362
360
359
357
354
351
347
346

Tuesday 23

Waxing Crescent 12%

11:32

19:53

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 OK
10 OK
11 OK
12 OK
13 OK
14 Bad

Sun - Rise: 08:47, Set: 16:31, Transit: 12:39. Moon - Rise: 11:32, Set: 19:53. Civil Dark: 17:12 - 08:06. Nautical Dark: 17:56 - 07:22. Astro Dark: 18:37 - 06:41

Total Clouds (% Sky Obscured)

68
78
91
89
83
73
64
75
81
88
85
84
81
75
68
57
56
53
36
36
36
36
37
46

Low Clouds (% Sky Obscured)

68
71
70
73
73
73
64
75
81
87
84
81
78
70
63
55
51
45
36
36
36
36
37
46

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
2
2
2
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

17
28
45
39
21
3
0
0
0
0
0
0
0
0
0
0
0
4
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
1
1
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

2
1
0
-1
-2
-1
-1
-1
-2
-2
-3
-4
-5
-5
-5
-6
-5
-6
-6
-5
-4
-4
-4
-5

Dew Point (°C)

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

Relative Humidity (%)

82
83
85
85
85
83
80
77
77
77
77
78
81
84
86
84
81
78
78
74
70
64
56
49

Pressure (mb)

1017
1018
1018
1019
1020
1020
1021
1021
1022
1022
1023
1023
1024
1024
1025
1025
1026
1026
1027
1028
1028
1028
1028
1028

Ozone (du)

342
340
338
338
340
342
347
351
353
354
356
354
353
354
354
354
356
356
358
362
368
376
372
369

Wednesday 24

Waxing Crescent 19%

11:45

21:12

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: 08:47, Set: 16:32, Transit: 12:40. Moon - Rise: 11:45, Set: 21:12. Civil Dark: 17:12 - 08:06. Nautical Dark: 17:56 - 07:23. Astro Dark: 18:38 - 06:41

Total Clouds (% Sky Obscured)

49
65
80
90
96
100
94
90
80
72
79
78
81
87
84
80
79
74
65
70
77
84
85
84

Low Clouds (% Sky Obscured)

49
55
46
37
47
57
67
64
62
63
66
74
69
74
70
69
72
70
65
70
77
81
84
82

Medium Clouds (% Sky Obscured)

0
23
44
65
71
69
64
53
43
34
36
30
20
10
8
4
12
22
30
45
47
55
38
29

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
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

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
1
1
1
6
8
7
7
6
5
6
5
1
1
1
0
1
1
0
8
11
12
9
6

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)

17
17
17
17
17
17
16
16
16
16
16
16
16
16
16
16
16
15
15
15
15
16
16
16

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-4
-5
-5
-6
-5
-6
-6
-6
-6
-6
-6
-6
-6
-5
-5
-6
-6
-7
-7
-7
-7
-7
-7
-8

Dew Point (°C)

-9
-9
-8
-8
-8
-8
-7
-7
-7
-8
-7
-8
-8
-7
-8
-9
-9
-11
-13
-14
-14
-15
-15
-15

Relative Humidity (%)

48
49
55
56
59
60
62
62
62
61
62
62
62
63
60
58
56
50
44
40
37
35
33
34

Pressure (mb)

1028
1028
1028
1028
1029
1029
1029
1029
1028
1028
1028
1028
1027
1027
1027
1027
1027
1027
1027
1027
1026
1026
1025
1025

Ozone (du)

367
364
363
363
362
361
361
363
363
365
365
366
367
368
373
377
382
380
378
376
369
362
355
352

Thursday 25

Waxing Crescent 28%

11:56

22:31

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 OK
10 OK
11 OK
12 OK
13 OK
14 Bad

Sun - Rise: 08:47, Set: 16:32, Transit: 12:40. Moon - Rise: 11:56, Set: 22:31. Civil Dark: 17:13 - 08:07. Nautical Dark: 17:57 - 07:23. Astro Dark: 18:38 - 06:42

Total Clouds (% Sky Obscured)

82
71
62
56
66
79
91
93
93
90
82
75
67
75
79
89
71
58
42
37
33
24
34
46

Low Clouds (% Sky Obscured)

78
69
60
50
64
74
86
90
86
81
76
71
67
72
79
89
71
58
42
37
30
20
29
39

Medium Clouds (% Sky Obscured)

21
15
8
1
8
18
26
27
32
31
22
13
3
5
7
9
6
3
0
0
0
0
0
0

High Clouds (% Sky Obscured)

0
0
0
0
3
6
8
6
3
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 (%)

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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-8
-8
-8
-7
-8
-7
-7
-7
-7
-7
-7
-7
-7
-6
-6
-6
-7
-6
-6
-6
-6
-6
-6
-3

Dew Point (°C)

-14
-14
-13
-13
-12
-12
-12
-11
-11
-11
-11
-10
-10
-10
-10
-10
-10
-9
-9
-9
-9
-8
-8
-8

Relative Humidity (%)

36
37
40
42
45
47
48
49
50
52
53
54
53
54
55
55
55
57
58
59
57
56
54
57

Pressure (mb)

1025
1025
1025
1025
1026
1026
1026
1026
1026
1026
1026
1026
1027
1027
1027
1027
1027
1028
1028
1029
1029
1029
1029
1029

Ozone (du)

349
347
345
344
342
344
345
346
347
349
350
348
347
346
346
346
346
345
343
341
342
342
342
344

Friday 26

Waxing Crescent 38%

12:07

23:50

15 Bad
16 OK
17 OK
18 OK
19 Good
20 Good
21 Good
22 Good
23 Good
00 Good
01 Good
02 Good
03 Good
04 Good
05 Good
06 Good

Sun - Rise: 08:48, Set: 16:33, Transit: 12:41. Moon - Rise: 12:07, Set: 23:50. Civil Dark: 17:14 - 08:07. Nautical Dark: 17:58 - 07:23. Astro Dark: 18:39 - 06:42

Total Clouds (% Sky Obscured)

58
43
32
16
11
6
0
0
1
1
6
11
10
8
5
2

Low Clouds (% Sky Obscured)

53
42
28
15
10
6
0
0
0
0
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

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

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
1
1
6
11
10
8
5
2

ISS Passover

Visibility (miles)

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

Precipitation Type

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

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-4
-4
-4
-4
-5
-5
-5
-6
-5
-6
-5
-6
-6
-6
-6
-7

Dew Point (°C)

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

Relative Humidity (%)

59
60
63
66
68
68
69
68
63
57
52
53
55
56
62
67

Pressure (mb)

1029
1030
1030
1031
1031
1031
1032
1032
1033
1033
1033
1033
1033
1034
1034
1034

Ozone (du)

346
348
346
344
342
337
332
327
325
323
321
321
321
321
320
318

Forecast for De Meern, Gemeente Utrecht, Netherlands (52.08,5.03)

Generated: 20/12/25 15:22:05. Forecast: 20/12/25 to 26/12/25. Timezone: UTC+1.00