Clear Outside v1.0 - International Weather Forecasts For Astronomers

Wednesday 31

Waxing Gibbous 91%

14:11

07:05

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
15 Bad
16 Bad
17 Bad
18 Bad
19 Bad
20 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)

78
85
92
100
86
61
61
83
70
72
98
100
85
100
100
100
100
100
91
100
100
100
100
100

Low Clouds (% Sky Obscured)

78
85
84
86
79
50
46
67
64
62
66
66
72
66
80
81
89
100
65
80
63
67
68
72

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
42
89
46
24
15
66
100
100
100
100

High Clouds (% Sky Obscured)

60
51
8
44
14
12
22
2
2
39
94
100
63
100
100
100
92
33
60
100
100
100
100
100

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
0
0
0
0
0
0
1
0
2
12
28
39
38
27
13
21
20
21
19

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
10
11
11
11
10
11
12
13
14
15
15
16
17
18
18
16
15
14
13
14
14
14

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

91
89
89
89
87
89
91
91
91
91
91
88
84
81
76
70
74
86
82
73
69
73
77
77

Pressure (mb)

1023
1022
1021
1021
1020
1019
1018
1017
1016
1014
1013
1013
1012
1012
1011
1009
1008
1008
1007
1006
1006
1006
1006
1006

Ozone (du)

305
308
307
303
304
305
304
303
306
306
298
296
297
308
313
322
334
353
378
385
392
395
393
376

Thursday 1

Waxing Gibbous 97%

15:13

08:22

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 OK
11 OK
12 OK
13 Bad
14 OK
15 Bad
16 Bad
17 Bad
18 Bad
19 Bad
20 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
100
100
100
100
81
84
87
94
55
56
51
28
9
18
40
48
30
42
60
75
88
95
93

Low Clouds (% Sky Obscured)

74
74
69
66
86
69
72
63
66
53
54
49
25
9
18
40
48
30
35
60
68
74
68
56

Medium Clouds (% Sky Obscured)

100
100
100
100
100
61
77
87
94
8
56
51
28
0
1
0
0
0
0
9
27
64
66
74

High Clouds (% Sky Obscured)

100
100
100
100
100
4
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
8
0
0
0
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
Snow
None
None
None
None
Snow
Snow
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

18
21
23
27
25
18
12
7
5
38
77
31
11
7
4
3
1
14
10
9
10
29
28
21

Precipitation Amount (mm)

0
0
0
0
0.1
0
0
0
0
0.1
0.6
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

76
72
72
73
72
72
74
76
77
80
94
98
96
88
80
74
72
72
73
76
78
78
91
91

Pressure (mb)

1006
1006
1005
1005
1005
1005
1005
1004
1004
1004
1003
1004
1004
1004
1005
1004
1004
1004
1004
1005
1005
1005
1006
1006

Ozone (du)

367
369
371
371
370
368
369
369
374
379
380
382
385
386
390
391
391
391
395
397
398
398
396
392

Friday 2

Waxing Gibbous 100%

16:33

09:19

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
15 Bad
16 Bad
17 Bad
18 Bad
19 Bad
20 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)

99
70
65
67
66
75
82
83
80
75
76
53
75
82
91
96
87
93
76
95
93
89
86
85

Low Clouds (% Sky Obscured)

55
70
64
63
64
72
77
78
75
63
73
53
69
78
88
90
74
82
70
76
75
77
75
70

Medium Clouds (% Sky Obscured)

94
35
24
26
0
1
45
45
1
40
19
2
1
41
73
76
37
19
29
76
93
89
15
85

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)

4
0
9
9
9
0
0
0
7
9
9
9
0
0
0
0
9
9
9
2
3
0
2
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

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

Precipitation Probability (%)

58
38
16
21
28
74
95
89
32
8
6
25
55
95
95
38
13
25
40
49
95
86
62
49

Precipitation Amount (mm)

0.2
0
0
0
0
0.5
1.5
0.5
0
0
0
0
0.1
2
1
0
0
0
0.1
0
1.5
0.8
0.3
0.1

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

88
98
92
83
84
96
98
100
87
83
86
86
94
96
98
92
83
84
84
96
92
98
91
96

Pressure (mb)

1006
1007
1007
1007
1007
1007
1007
1007
1007
1007
1008
1008
1008
1008
1008
1009
1009
1009
1009
1009
1009
1009
1010
1011

Ozone (du)

388
375
365
352
347
346
343
343
345
352
359
364
372
371
374
381
383
377
378
375
376
378
378
375

Saturday 3

Full Moon 99%

18:02

09:58

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
15 Bad
16 Bad
17 Bad
18 Bad
19 Bad
20 Bad

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)

84
81
66
77
79
63
79
83
83
89
86
82
78
82
86
90
87
86
86
89
93
97
98
99

Low Clouds (% Sky Obscured)

68
63
58
60
64
63
74
75
72
75
73
71
70
67
84
88
85
86
84
85
86
87
84
84

Medium Clouds (% Sky Obscured)

83
15
33
77
79
5
56
64
46
69
65
61
58
45
51
55
45
45
45
59
76
90
93
96

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
17
34
51
43
36

ISS Passover

Visibility (miles)

9
1
9
4
4
9
6
0
7
1
9
8
9
9
9
4
9
9
9
0
0
0
9
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
Snow
Snow
Snow
None
None
Snow
Snow
Snow
Snow
Snow
None
None
Snow
None
Snow
None
Snow
Snow
Snow
None
None
None

Precipitation Probability (%)

34
33
42
52
47
46
47
49
57
57
51
52
37
28
41
41
56
45
55
59
55
38
29
31

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

0
0
0
-1
0
0
-0
-0
0
-0
0
0
-0
0
0
1
1
1
1
1
1
0
0
-0

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

86
91
87
92
91
89
89
94
91
94
89
86
87
86
88
89
88
88
88
94
92
94
91
94

Pressure (mb)

1011
1012
1012
1012
1012
1013
1013
1013
1013
1013
1014
1014
1015
1015
1015
1016
1016
1016
1016
1016
1017
1017
1017
1018

Ozone (du)

373
373
373
369
374
370
361
358
359
355
357
362
368
372
380
385
390
388
386
383
384
382
382
380

Sunday 4

Waning Gibbous 96%

19:31

10:25

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

Sun - Rise: 08:43, Set: 16:52, Transit: 12:48. Moon - Rise: 19:31, Set: 10:25. Civil Dark: 17:31 - 08:05. Nautical Dark: 18:13 - 07:23. Astro Dark: 18:52 - 06:43

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
99
99
98
94
89
82
67
51
35
28
25
22
26
27
30
27
22

Low Clouds (% Sky Obscured)

83
84
86
77
81
85
94
90
86
63
41
43
50
47
47
35
28
25
22
26
27
30
27
22

Medium Clouds (% Sky Obscured)

98
100
100
100
100
100
100
98
96
93
92
88
75
49
26
2
1
0
0
0
1
1
1
2

High Clouds (% Sky Obscured)

28
50
72
94
71
46
24
16
8
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

ISS Passover

Visibility (miles)

0
0
0
1
3
6
2
2
7
8
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

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

Precipitation Probability (%)

41
50
39
28
24
26
16
32
30
18
20
15
7
7
5
0
0
0
0
2
2
1
3
4

Precipitation Amount (mm)

0.2
0.3
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
7
7
7
7
7
7
8
7
6
5
4
4
3
2
2
2
2
3
4
5
6
7

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

94
96
96
94
94
94
94
94
94
92
94
94
94
96
94
92
91
92
92
94
92
92
90
89

Pressure (mb)

1018
1018
1018
1019
1019
1019
1019
1019
1019
1019
1020
1019
1020
1021
1021
1021
1022
1022
1022
1023
1023
1024
1024
1024

Ozone (du)

378
381
385
386
385
387
386
384
385
391
393
398
403
409
408
408
408
404
400
396
393
390
388
384

Monday 5

Waning Gibbous 91%

20:55

10:43

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

Sun - Rise: 08:43, Set: 16:53, Transit: 12:48. Moon - Rise: 20:55, Set: 10:43. Civil Dark: 17:32 - 08:05. Nautical Dark: 18:14 - 07:23. Astro Dark: 18:53 - 06:43

Total Clouds (% Sky Obscured)

17
35
49
59
55
57
60
51
45
42
44
49
45
57
68
80
86
94
100
96
91
86
88
89

Low Clouds (% Sky Obscured)

17
14
13
12
13
16
21
25
30
36
35
30
29
34
36
40
48
54
62
46
31
16
28
37

Medium Clouds (% Sky Obscured)

2
9
18
26
25
28
31
20
11
1
8
14
19
25
34
46
64
83
100
96
91
86
88
89

High Clouds (% Sky Obscured)

0
0
0
0
0
0
2
1
2
0
1
1
2
4
6
7
29
51
82
62
70
45
45
45

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
2
1
0
3
5
7
9
7
3
5
4
1
1
1
0
0
0
0
0
0
0
0
1

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

89
87
87
87
87
87
91
92
92
92
91
91
91
91
91
89
89
88
86
84
84
81
81
81

Pressure (mb)

1025
1025
1025
1025
1025
1025
1025
1025
1024
1024
1024
1024
1024
1024
1024
1023
1023
1022
1022
1021
1021
1020
1020
1020

Ozone (du)

381
377
376
375
374
370
365
361
361
362
362
360
358
356
358
360
362
365
367
369
373
376
379
381

Tuesday 6

Waning Gibbous 83%

20:55

10:58

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

Sun - Rise: 08:43, Set: 16:54, Transit: 12:49. Moon - Rise: 20:55, Set: 10:58. Civil Dark: 17:33 - 08:04. Nautical Dark: 18:15 - 07:22. Astro Dark: 18:54 - 06:43

Total Clouds (% Sky Obscured)

92
91
90
90
92
94
95
97
99
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

47
61
74
86
87
88
89
91
92
97
95
93
90
91
90
91

Medium Clouds (% Sky Obscured)

92
82
77
71
56
40
25
23
24
27
30
30
26
41
56
70

High Clouds (% Sky Obscured)

40
40
50
65
90
90
95
95
99
95
93
91
99
93
88
87

ISS Passover

Visibility (miles)

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

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 (%)

1
3
8
7
22
26
27
30
25
12
11
8
2
7
8
7

Precipitation Amount (mm)

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
12
12
11
11
11
10
9
8
8
8
8

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

81
80
81
83
83
84
86
87
91
91
92
92
94
96
96
98

Pressure (mb)

1019
1019
1019
1019
1019
1019
1019
1019
1019
1019
1019
1019
1019
1020
1020
1020

Ozone (du)

384
386
389
392
395
392
389
385
383
381
379
378
376
375
379
384

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

Generated: 31/12/25 20:47:12. Forecast: 31/12/25 to 06/01/26. Timezone: UTC+1.00