Clear Outside v1.0 - International Weather Forecasts For Astronomers

Tuesday 30

Waxing Gibbous 82%

12:58

No Set

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

Sun - Rise: 08:42, Set: 16:44, Transit: 12:43. Moon - Rise: 12:58, Set: No Set. Civil Dark: 17:23 - 08:03. Nautical Dark: 18:05 - 07:21. Astro Dark: 18:45 - 06:41

Total Clouds (% Sky Obscured)

18
14
18
35
41
50
76
70
18
52
52
66
55
47
58
16
39
54
68
86
79
57
72
76

Low Clouds (% Sky Obscured)

10
10
18
35
39
46
73
68
14
52
49
66
55
47
58
16
34
46
56
78
79
57
72
39

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
22
35
26
29
0
0
0
37

High Clouds (% Sky Obscured)

1
1
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 (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
3
3
3
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

-7
-8
-6
-3
-2
-3
-3
-3
-4
-4
-3
-2
-1
-1
-1
-1
-1
-2
-2
-2
-2
-2
-1
-2

Relative Humidity (%)

58
55
67
81
84
81
73
65
62
60
61
68
80
83
84
86
88
91
89
91
91
92
94
92

Pressure (mb)

1028
1029
1029
1030
1030
1030
1031
1031
1030
1030
1030
1030
1030
1030
1031
1031
1031
1031
1031
1031
1030
1030
1030
1030

Ozone (du)

279
276
277
280
283
287
298
308
312
317
327
334
331
331
335
336
334
333
330
329
329
326
325
325

Wednesday 31

Waxing Gibbous 91%

13:27

05:33

05 Bad
06 Bad
07 Bad
08 OK
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 OK
00 Bad
01 Bad
02 Bad
03 Bad
04 Bad

Sun - Rise: 08:42, Set: 16:45, Transit: 12:43. Moon - Rise: 13:27, Set: 05:33. Civil Dark: 17:24 - 08:03. Nautical Dark: 18:06 - 07:21. Astro Dark: 18:46 - 06:41

Total Clouds (% Sky Obscured)

81
88
67
29
74
46
95
81
85
88
98
96
86
76
74
62
39
47
38
66
80
92
79
55

Low Clouds (% Sky Obscured)

72
84
57
29
74
46
95
71
68
83
96
92
73
55
51
44
38
38
36
58
80
92
79
55

Medium Clouds (% Sky Obscured)

46
60
13
0
0
0
11
41
52
37
31
24
17
15
7
4
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

2
1
1
1
1
1
0
0
0
0
0
0
0
11
19
12
11
30
20
29
11
10
11
6

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 (%)

3
6
1
1
0
0
1
9
4
6
2
1
1
1
0
0
3
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)

4
4
4
5
5
5
6
7
8
8
8
8
8
8
8
8
9
9
10
11
12
13
13
13

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

92
91
91
91
91
89
81
77
73
72
75
85
86
86
91
91
93
93
94
92
92
92
92
92

Pressure (mb)

1029
1029
1029
1029
1029
1028
1028
1028
1027
1026
1026
1025
1025
1024
1024
1024
1023
1023
1022
1021
1020
1019
1019
1018

Ozone (du)

323
321
318
318
319
321
323
322
317
317
315
316
321
324
323
318
314
308
304
305
307
307
308
307

Thursday 1

Waxing Gibbous 97%

14:10

07:02

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
02 Bad
03 Bad
04 Bad

Sun - Rise: 08:42, Set: 16:46, Transit: 12:44. Moon - Rise: 14:10, Set: 07:02. Civil Dark: 17:25 - 08:03. Nautical Dark: 18:07 - 07:21. Astro Dark: 18:47 - 06:41

Total Clouds (% Sky Obscured)

61
92
66
80
100
99
72
52
95
100
95
68
76
93
77
100
90
93
86
100
99
98
96
91

Low Clouds (% Sky Obscured)

46
42
61
56
59
89
71
52
77
82
83
65
72
87
75
69
81
77
80
73
68
58
43
57

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
50
46
28
0
0
0
0
30
12
42
76
100
99
98
96
90

High Clouds (% Sky Obscured)

32
91
31
57
99
66
13
19
51
100
44
4
35
35
35
76
17
24
20
100
72
47
25
25

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

Precipitation Probability (%)

0
0
0
1
1
2
2
2
7
31
40
20
11
22
21
11
7
14
16
11
22
11
6
7

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

13
14
15
16
17
18
19
20
21
21
20
19
18
16
16
16
16
16
16
16
15
15
15
15

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

91
91
92
92
91
86
77
76
72
76
76
82
79
77
76
76
76
76
79
80
79
79
80
84

Pressure (mb)

1017
1015
1014
1013
1013
1012
1011
1010
1009
1007
1007
1007
1006
1006
1006
1006
1006
1006
1006
1006
1006
1006
1006
1006

Ozone (du)

308
307
302
294
293
298
302
315
321
324
338
372
385
389
391
390
385
379
372
374
378
377
378
381

Friday 2

Waxing Gibbous 100%

15:11

08:19

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 OK
20 OK
21 OK
22 Bad
23 Bad
00 Bad
01 Bad
02 Bad
03 Bad
04 Bad

Sun - Rise: 08:42, Set: 16:47, Transit: 12:44. Moon - Rise: 15:11, Set: 08:19. Civil Dark: 17:26 - 08:03. Nautical Dark: 18:08 - 07:21. Astro Dark: 18:47 - 06:41

Total Clouds (% Sky Obscured)

86
81
82
83
86
81
77
71
60
55
48
44
46
43
36
30
20
21
27
28
32
40
51
60

Low Clouds (% Sky Obscured)

66
70
77
75
65
68
64
64
59
55
48
44
42
36
24
12
0
1
3
4
9
15
21
32

Medium Clouds (% Sky Obscured)

82
75
73
76
79
72
77
51
4
4
3
3
46
43
36
30
20
21
27
28
32
40
39
56

High Clouds (% Sky Obscured)

25
30
30
30
23
1
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
7
0
0
3
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
Snow
Snow
None
None
None
None

Precipitation Probability (%)

9
6
5
6
5
8
9
8
14
15
14
12
9
2
4
6
14
41
78
76
40
10
17
7

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.5
0.6
0
0
0
0

Wind Speed/Direction (mph)

15
15
14
14
13
13
14
15
16
15
14
13
12
12
13
14
16
16
15
14
11
8
8
9

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

86
84
86
84
84
84
78
73
68
67
65
69
73
80
80
81
89
87
86
96
96
94
92
92

Pressure (mb)

1005
1005
1005
1005
1005
1005
1005
1005
1004
1004
1003
1003
1003
1002
1002
1002
1001
1001
1001
1001
1001
1001
1001
1001

Ozone (du)

379
378
374
372
368
365
363
358
356
356
357
358
353
352
347
339
330
322
317
316
326
334
336
341

Saturday 3

Full Moon 99%

16:31

09:16

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 Bad
18 Bad
19 Bad
20 Bad
21 Bad
22 Bad
23 OK
00 OK
01 Bad
02 Bad
03 Bad
04 Bad

Sun - Rise: 08:41, Set: 16:48, Transit: 12:45. Moon - Rise: 16:31, Set: 09:16. Civil Dark: 17:27 - 08:03. Nautical Dark: 18:09 - 07:21. Astro Dark: 18:48 - 06:41

Total Clouds (% Sky Obscured)

71
78
83
92
91
70
72
73
64
52
58
44
45
49
57
56
55
45
35
26
37
46
57
60

Low Clouds (% Sky Obscured)

43
54
59
69
75
60
54
48
32
15
1
3
3
3
52
45
37
33
32
26
29
35
34
39

Medium Clouds (% Sky Obscured)

53
59
66
86
78
42
43
44
36
34
58
25
26
35
35
35
35
25
15
4
14
26
36
41

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
8
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
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

5
11
25
17
3
8
10
9
17
25
23
6
3
3
10
9
6
6
6
3
10
13
15
17

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

92
94
96
94
92
89
84
78
74
73
79
86
92
94
94
94
92
91
92
91
89
89
89
91

Pressure (mb)

1001
1000
1001
1001
1001
1002
1002
1002
1002
1002
1003
1003
1004
1004
1005
1001
1001
1001
1001
1002
1002
1002
1002
1002

Ozone (du)

338
348
358
365
376
388
396
397
398
398
396
396
395
396
401
407
414
420
422
424
427
426
425
424

Sunday 4

Waning Gibbous 96%

18:00

09:56

05 Bad
06 Bad
07 Bad
08 Bad
09 Bad
10 Bad
11 Bad
12 OK
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
02 Bad
03 Bad
04 Bad

Sun - Rise: 08:41, Set: 16:49, Transit: 12:45. Moon - Rise: 18:00, Set: 09:56. Civil Dark: 17:28 - 08:03. Nautical Dark: 18:10 - 07:21. Astro Dark: 18:49 - 06:41

Total Clouds (% Sky Obscured)

67
77
75
73
68
60
52
46
58
70
84
72
54
38
61
79
96
94
91
89
84
78
73
72

Low Clouds (% Sky Obscured)

41
40
30
19
9
27
38
46
53
60
65
64
54
38
47
32
22
40
60
80
70
61
51
47

Medium Clouds (% Sky Obscured)

45
47
44
42
40
25
14
2
20
39
57
65
54
38
61
79
91
72
52
32
40
48
56
57

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)

8
9
9
9
9
9
9
9
9
9
9
9
9
9
9
6
3
0
3
6
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
Snow
Snow
Snow
Snow
None
None
None
None
None

Precipitation Probability (%)

16
13
11
8
0
3
3
3
19
25
31
28
26
24
40
53
65
52
40
17
19
18
12
23

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.3
0.5
0.3
0.1
0
0
0
0
0

Wind Speed/Direction (mph)

11
11
12
10
8
7
8
9
9
10
10
11
11
10
11
11
12
12
12
12
12
12
12
12

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-5
-5
-5
-5
-6
-6
-6
-7
-7
-3
-3
-3
-3
-3
-4
-6
-7
-7
-7
-7
-6
-8
-8
-8

Dew Point (°C)

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

Relative Humidity (%)

87
84
81
83
84
86
80
74
69
74
80
86
86
86
87
91
91
92
91
91
87
89
87
87

Pressure (mb)

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

Ozone (du)

420
416
411
409
407
405
404
404
403
401
400
398
397
396
396
392
388
384
384
385
386
386
385
385

Monday 5

Waning Gibbous 91%

19:29

10:22

05 Bad
06 Bad
07 Bad
08 Bad
09 OK
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 OK

Sun - Rise: 08:41, Set: 16:50, Transit: 12:46. Moon - Rise: 19:29, Set: 10:22. Civil Dark: 17:29 - 08:02. Nautical Dark: 18:11 - 07:21. Astro Dark: 18:50 - 06:41

Total Clouds (% Sky Obscured)

71
70
58
47
35
39
43
47
62
71
80
70
60
54
60
61
57
50
44
30

Low Clouds (% Sky Obscured)

45
51
48
44
35
39
43
47
60
71
79
68
57
46
49
53
57
50
44
30

Medium Clouds (% Sky Obscured)

51
44
31
17
2
3
3
3
10
13
14
20
33
48
48
38
28
22
17
11

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
1
2
3
6
9
12
8
5
1
1
1
0

ISS Passover

Visibility (miles)

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

Precipitation Type

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

Precipitation Probability (%)

23
9
18
15
3
7
9
9
17
23
21
28
24
8
11
7
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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-8
-7
-7
-8
-8
-7
-8
-8
-8
-4
-4
-4
-4
-4
-4
-8
-7
-7
-7
-7

Dew Point (°C)

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

Relative Humidity (%)

86
86
87
86
84
82
79
77
74
75
78
80
83
86
87
89
89
89
89
90

Pressure (mb)

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

Ozone (du)

383
381
379
379
379
378
379
380
380
384
388
392
393
395
397
399
400
402
403
404

Forecast for Elst, Flemish Brabant, Kingdom of Belgium (50.77,4.89)

Generated: 30/12/25 05:35:33. Forecast: 30/12/25 to 05/01/26. Timezone: UTC+1.00