Clear Outside v1.0 - International Weather Forecasts For Astronomers

Monday 29

Waxing Gibbous 72%

12:39

02:36

00 Good
01 Good
02 Good
03 Good
04 Good
05 Good
06 OK
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

Sun - Rise: 08:44, Set: 16:44, Transit: 12:44. Moon - Rise: 12:39, Set: 02:36. Civil Dark: 17:24 - 08:05. Nautical Dark: 18:06 - 07:23. Astro Dark: 18:46 - 06:43

Total Clouds (% Sky Obscured)

3
4
3
4
2
17
44
82
87
95
100
90
86
79
79
83
82
86
80
84
61
86
79
92

Low Clouds (% Sky Obscured)

0
0
0
0
0
16
42
81
76
75
80
81
82
79
79
83
82
86
80
84
61
86
79
92

Medium 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

High Clouds (% Sky Obscured)

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

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
64
100
100
100
100
100
99
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
1
0
1
0
0
1
6
3

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

78
75
74
71
70
71
75
76
81
87
89
86
83
81
80
81
88
86
80
77
77
76
69
65

Pressure (mb)

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

Ozone (du)

306
306
308
306
304
299
298
298
296
295
297
298
298
297
296
292
289
291
290
287
286
285
285
283

Tuesday 30

Waxing Gibbous 82%

13:00

04:04

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

Sun - Rise: 08:44, Set: 16:45, Transit: 12:45. Moon - Rise: 13:00, Set: 04:04. Civil Dark: 17:24 - 08:05. Nautical Dark: 18:07 - 07:23. Astro Dark: 18:47 - 06:43

Total Clouds (% Sky Obscured)

65
50
56
51
34
50
61
36
0
7
26
37
57
58
57
39
50
24
0
0
43
67
88
85

Low Clouds (% Sky Obscured)

63
50
56
51
34
48
61
36
0
0
21
37
57
58
57
39
50
24
0
0
6
62
76
85

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
28
50
75
65

High Clouds (% Sky Obscured)

2
2
2
1
1
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 (%)

3
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
3
7

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
12
12
12
11
8
8
8
7
7
6
7
8
9
9
8
8
7
7
6
5
4
4
3

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

66
59
57
54
57
69
70
70
70
71
70
66
63
56
56
58
62
65
68
73
77
80
80
78

Pressure (mb)

1027
1027
1028
1028
1028
1028
1028
1029
1029
1030
1030
1031
1031
1031
1031
1031
1031
1031
1031
1031
1032
1032
1032
1032

Ozone (du)

284
288
286
284
281
283
283
281
281
283
285
285
291
301
310
331
336
337
340
339
341
339
339
338

Wednesday 31

Waxing Gibbous 91%

13:28

05:35

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

Sun - Rise: 08:44, Set: 16:46, Transit: 12:45. Moon - Rise: 13:28, Set: 05:35. Civil Dark: 17:25 - 08:05. Nautical Dark: 18:08 - 07:23. Astro Dark: 18:48 - 06:43

Total Clouds (% Sky Obscured)

69
21
42
54
76
80
50
80
24
83
78
76
75
72
86
76
38
40
29
27
63
78
62
54

Low Clouds (% Sky Obscured)

69
21
42
32
66
70
39
80
16
73
64
65
61
68
83
72
27
20
18
10
13
19
27
37

Medium Clouds (% Sky Obscured)

0
0
0
29
40
30
19
0
0
5
7
2
5
0
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
1
1
1
0
0
1
0
0
0
0
1
18
43
59
39
18

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 (%)

7
3
0
0
2
4
1
4
0
0
0
0
0
2
7
17
1
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)

2
1
1
2
3
4
4
4
5
6
7
7
8
9
8
7
7
7
7
7
7
8
9
10

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

75
73
70
68
68
68
70
70
71
70
69
68
68
71
83
85
86
91
91
91
91
91
91
91

Pressure (mb)

1032
1031
1031
1031
1031
1030
1030
1030
1030
1030
1030
1029
1029
1028
1028
1027
1027
1026
1026
1025
1025
1024
1024
1023

Ozone (du)

337
336
334
332
331
329
325
322
321
319
320
322
321
318
319
318
319
322
323
324
324
319
321
322

Thursday 1

Waxing Gibbous 97%

14:11

07:05

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
15 Bad
16 Bad
17 Bad
18 Bad
19 Bad
20 Bad
21 Bad
22 Bad
23 Bad

Sun - Rise: 08:44, Set: 16:47, Transit: 12:46. Moon - Rise: 14:11, Set: 07:05. Civil Dark: 17:26 - 08:05. Nautical Dark: 18:09 - 07:23. Astro Dark: 18:49 - 06:43

Total Clouds (% Sky Obscured)

53
50
53
50
36
47
39
43
51
71
76
79
84
89
94
100
100
100
100
99
98
97
98
99

Low Clouds (% Sky Obscured)

49
49
45
45
36
44
39
43
51
63
65
65
72
72
74
80
85
88
91
92
94
95
95
96

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
9
18
27
40
43
45
49
43
37
43
46

High Clouds (% Sky Obscured)

3
9
13
5
3
10
1
2
5
6
20
33
46
64
82
100
100
96
99
67
33
1
30
60

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
1
1
0
1
1
1
6
7
4
14
18
22
31
35
31
34
25

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
11
11
11
11
11
12
12
13
14
14
15
16
17
17
16
15
14
14
14
14
14
13
13

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

88
86
86
87
87
89
89
91
92
91
88
81
76
73
73
75
73
73
73
74
77
82
86
88

Pressure (mb)

1022
1022
1021
1020
1019
1018
1017
1016
1015
1015
1014
1013
1012
1011
1010
1010
1009
1009
1008
1008
1008
1008
1008
1007

Ozone (du)

315
315
318
319
318
317
313
312
310
307
312
319
325
324
325
327
330
340
352
362
370
377
377
376

Friday 2

Waxing Gibbous 99%

15:13

08:22

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
15 Bad
16 Bad
17 Bad
18 Bad
19 Bad
20 Bad
21 Bad
22 Bad
23 Bad

Sun - Rise: 08:44, Set: 16:49, Transit: 12:46. Moon - Rise: 15:13, Set: 08:22. Civil Dark: 17:27 - 08:05. Nautical Dark: 18:09 - 07:23. Astro Dark: 18:49 - 06:43

Total Clouds (% Sky Obscured)

100
84
62
66
68
73
78
76
79
64
64
69
62
66
67
68
71
72
78
78
84
87
76
63

Low Clouds (% Sky Obscured)

96
77
58
55
51
48
54
53
65
50
42
37
35
40
46
51
58
63
68
72
74
78
63
51

Medium Clouds (% Sky Obscured)

48
52
48
48
51
48
40
33
24
13
10
6
1
1
0
0
7
21
31
24
14
0
12
22

High Clouds (% Sky Obscured)

90
84
62
66
67
33
0
0
0
0
3
5
5
0
0
0
0
0
0
0
0
3
4
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 (%)

24
14
16
13
20
22
24
22
17
8
5
6
0
5
6
7
6
4
1
4
5
6
12
12

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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

88
86
89
93
91
93
93
93
93
93
93
88
85
82
83
83
85
82
77
76
74
73
71
69

Pressure (mb)

1007
1007
1006
1006
1006
1006
1006
1006
1006
1006
1006
1006
1006
1005
1005
1004
1004
1004
1004
1003
1003
1003
1003
1002

Ozone (du)

374
371
370
372
370
364
358
345
331
314
300
297
293
291
289
287
285
286
288
290
290
290
290
291

Saturday 3

Full Moon 100%

16:33

09:19

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
15 Bad
16 Bad
17 Bad
18 Bad
19 Bad
20 Bad
21 Bad
22 Bad
23 Bad

Sun - Rise: 08:44, Set: 16:50, Transit: 12:47. Moon - Rise: 16:33, Set: 09:19. Civil Dark: 17:28 - 08:05. Nautical Dark: 18:10 - 07:23. Astro Dark: 18:50 - 06:43

Total Clouds (% Sky Obscured)

50
53
59
58
60
59
57
69
67
63
66
67
68
72
76
78
79
82
83
84
85
84
80
78

Low Clouds (% Sky Obscured)

38
37
37
36
42
48
50
52
55
60
66
67
68
72
76
78
79
82
83
84
84
82
72
68

Medium Clouds (% Sky Obscured)

33
51
59
58
60
59
57
69
67
63
66
67
68
72
76
78
79
82
83
84
85
84
80
78

High Clouds (% Sky Obscured)

0
0
0
10
25
59
57
69
67
55
25
10
5
0
0
0
5
5
5
5
10
10
10
5

ISS Passover

Visibility (miles)

9
9
9
9
9
8
8
7
4
2
0
0
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
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
Snow
Snow
Snow
Snow
Snow
Snow
Snow

Precipitation Probability (%)

5
14
15
5
25
28
19
28
27
22
36
41
42
61
73
80
83
87
92
95
95
95
95
95

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0.2
0.3
0.4
0.4
0.5
0.5
0.6
0.7
0.8
0.9
0.7

Wind Speed/Direction (mph)

11
10
10
10
10
9
9
9
8
8
7
7
6
6
5
6
6
7
7
7
7
7
8
8

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

64
60
65
70
75
80
84
91
92
96
98
96
98
96
98
98
100
100
98
100
100
98
100
98

Pressure (mb)

1002
1002
1001
1001
1001
1001
1000
1000
1000
1000
1000
1000
1000
1000
999
999
999
999
998
998
998
998
998
998

Ozone (du)

292
293
297
300
303
305
306
307
317
326
336
340
344
348
347
346
345
348
351
353
355
357
359
357

Sunday 4

Waning Gibbous 99%

18:02

09:58

Sun - Rise: 08:44, Set: 16:51, Transit: 12:47. Moon - Rise: 18:02, Set: 09:58. Civil Dark: 17:29 - 08:05. Nautical Dark: 18:11 - 07:23. Astro Dark: 18:51 - 06:43

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 Brussels, Bruxelles-Capitale, Kingdom of Belgium (50.85,4.35)

Generated: 29/12/25 00:13:49. Forecast: 29/12/25 to 04/01/26. Timezone: UTC+1.00