Clear Outside v1.0 - International Weather Forecasts For Astronomers

Wednesday 31

Waxing Gibbous 91%

13:28

07:05

07 Bad
08 Bad
09 Bad
10 Bad
11 OK
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
05 Bad
06 Bad

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

Total Clouds (% Sky Obscured)

73
72
69
62
34
75
77
95
98
63
55
62
54
52
65
71
61
64
60
59
56
52
55
93

Low Clouds (% Sky Obscured)

68
72
37
29
34
69
64
92
96
63
55
59
38
43
53
52
54
60
60
59
56
52
55
93

Medium Clouds (% Sky Obscured)

3
5
0
0
0
4
18
17
25
0
0
1
2
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
0
0
25
23
34
46
21
29
20
9
8
13
11
19

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
7
18
21
9
1
0
0
0
0
0
0
0
0
0
0
1
1
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
4
5
6
7
8
8
8
6
7
7
7
8
9
9
10
10
10
10
11
11
12

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

86
87
87
84
80
76
75
79
83
83
86
88
89
89
89
89
89
89
89
91
89
91
91
91

Pressure (mb)

1029
1028
1029
1028
1028
1027
1027
1026
1026
1025
1025
1024
1024
1024
1023
1023
1022
1021
1020
1019
1018
1018
1017
1015

Ozone (du)

317
315
316
319
321
320
315
312
313
312
312
316
314
312
310
307
306
303
303
305
304
303
306
306

Thursday 1

Waxing Gibbous 97%

14:11

07:05

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
05 Bad
06 OK

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)

66
96
100
100
100
100
100
98
100
100
79
62
83
86
100
100
100
100
100
100
95
57
48
38

Low Clouds (% Sky Obscured)

66
60
58
61
62
83
95
86
86
67
74
60
70
65
73
75
71
68
71
65
64
57
48
27

Medium Clouds (% Sky Obscured)

0
0
0
0
21
33
36
11
2
2
35
62
83
86
100
100
82
100
100
95
69
6
0
15

High Clouds (% Sky Obscured)

23
87
100
100
100
97
100
68
100
100
35
18
28
52
100
100
100
100
100
100
60
0
0
0

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
8
9
9
9
9
9
9
9
9
4
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
Snow
None
None
None
None
None
None

Precipitation Probability (%)

1
1
1
1
4
8
23
23
10
25
17
15
15
15
25
25
28
37
34
28
23
7
12
2

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.2
0
0
0
0
0
0

Wind Speed/Direction (mph)

13
14
13
14
15
17
16
16
16
15
14
14
14
14
15
15
15
14
13
14
13
11
10
11

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

91
91
88
83
80
76
74
72
73
73
86
76
70
74
82
83
83
82
82
79
79
79
81
78

Pressure (mb)

1014
1013
1012
1012
1011
1010
1009
1008
1007
1006
1006
1006
1005
1005
1005
1005
1005
1005
1004
1004
1004
1004
1004
1004

Ozone (du)

299
295
297
299
307
318
325
350
368
375
387
393
394
383
374
371
368
367
368
374
385
386
390
389

Friday 2

Waxing Gibbous 100%

15:13

08:22

07 OK
08 Bad
09 Bad
10 Bad
11 Bad
12 Bad
13 Bad
14 Bad
15 Bad
16 OK
17 OK
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: 08:44, 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)

43
47
65
88
97
100
100
100
65
43
39
49
51
63
90
95
63
80
79
61
78
74
72
70

Low Clouds (% Sky Obscured)

38
47
44
40
53
95
100
100
39
43
39
49
51
54
73
90
62
71
71
61
72
68
64
66

Medium Clouds (% Sky Obscured)

40
30
51
84
95
100
100
60
43
0
0
2
2
3
65
86
3
63
37
8
4
8
59
8

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
1
0
0
0
0
9
9
9
9
9
9
7
0
7
8
8
9
6
0
9
4

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

Precipitation Probability (%)

0
0
22
78
76
80
68
64
33
8
2
1
4
14
50
65
41
35
21
34
43
30
39
60

Precipitation Amount (mm)

0
0
0
0.9
0.8
0.4
0.3
0.3
0
0
0
0
0
0
0.2
0.4
0
0
0
0
0
0
0
0.3

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

80
83
86
88
96
98
96
89
67
67
75
80
81
83
92
96
91
89
89
92
96
96
80
83

Pressure (mb)

1004
1004
1004
1004
1004
1004
1003
1003
1003
1003
1003
1003
1003
1003
1003
1004
1004
1004
1004
1004
1005
1005
1005
1005

Ozone (du)

385
383
385
387
390
393
393
395
395
395
396
396
394
393
393
392
394
394
386
382
378
381
384
389

Saturday 3

Full Moon 99%

16:33

09:19

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
05 Bad
06 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)

68
70
72
68
62
63
74
75
96
96
93
98
75
84
78
76
71
64
68
75
83
85
86
84

Low Clouds (% Sky Obscured)

68
65
60
58
55
50
57
62
70
71
72
75
72
70
73
71
68
60
51
74
82
83
85
82

Medium Clouds (% Sky Obscured)

44
54
72
6
34
63
59
36
96
40
53
50
34
49
32
47
13
3
37
1
4
3
2
0

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)

0
1
9
5
6
0
3
9
2
5
9
9
9
9
7
2
6
9
9
8
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
None
None
None
None
None
None
None
None
Snow
None
None
None
Snow
Snow
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

56
28
14
14
28
38
34
18
35
41
34
35
32
40
44
38
18
24
33
17
11
13
15
6

Precipitation Amount (mm)

0.2
0
0
0
0
0
0
0
0
0.1
0
0
0
0.1
0.1
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

13
13
12
13
13
13
14
14
12
11
11
11
9
11
10
10
10
10
10
10
10
11
11
11

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

96
94
87
89
92
94
91
84
92
89
86
84
87
92
92
96
91
86
87
91
87
86
88
83

Pressure (mb)

1005
1005
1006
1006
1007
1007
1007
1007
1008
1008
1009
1009
1010
1010
1011
1011
1012
1012
1013
1013
1013
1014
1014
1014

Ozone (du)

393
395
399
403
406
409
411
410
402
396
391
386
380
376
367
362
362
365
363
361
362
367
367
364

Sunday 4

Waning Gibbous 96%

18:02

09:58

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

89
85
90
80
77
71
65
45
53
39
38
37
43
40
36
55
71
87
87
88
88
78
67
52

Low Clouds (% Sky Obscured)

87
83
88
78
77
71
65
39
52
38
37
36
41
40
36
55
71
82
78
73
69
59
47
35

Medium Clouds (% Sky Obscured)

20
2
3
3
2
3
2
0
0
0
0
0
0
0
0
2
3
4
6
6
7
18
29
38

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
3
3
7
7
6

ISS Passover

Visibility (miles)

9
8
8
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 (%)

14
28
14
17
15
22
8
15
3
2
3
2
10
10
5
8
8
6
10
9
3
6
6
5

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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

84
91
88
84
83
80
80
78
78
80
83
84
86
84
84
84
84
84
83
84
84
84
86
86

Pressure (mb)

1014
1014
1015
1015
1016
1016
1016
1016
1016
1016
1017
1017
1017
1019
1019
1019
1020
1020
1020
1020
1020
1020
1020
1019

Ozone (du)

360
365
363
366
367
364
360
359
357
357
359
362
364
366
368
370
370
370
370
370
370
371
372
374

Monday 5

Waning Gibbous 91%

19:31

10:25

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
05 Bad
06 Bad

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)

56
62
68
74
80
88
91
91
92
94
96
97
87
75
64
65
67
69
74
80
85
86
87
89

Low Clouds (% Sky Obscured)

44
53
61
65
72
81
87
91
92
94
92
91
80
70
60
56
53
49
59
68
77
80
82
84

Medium Clouds (% Sky Obscured)

46
55
63
69
72
78
84
86
87
92
93
93
82
72
58
51
46
45
50
54
60
53
46
39

High Clouds (% Sky Obscured)

4
2
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
6
3
0
0
0
0
2
4
7
8
8
9
9
9
8
7
6
6
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

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

Precipitation Probability (%)

8
7
6
19
22
22
31
38
48
43
39
36
35
29
14
13
13
8
23
32
40
39
33
25

Precipitation Amount (mm)

0
0
0
0
0
0
0
0.1
0.2
0
0.1
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

8
7
7
7
7
8
8
8
7
7
7
7
7
7
6
6
6
7
7
7
7
7
6
6

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

86
86
86
86
87
91
93
94
96
98
98
98
98
94
94
92
91
92
91
92
94
98
94
91

Pressure (mb)

1019
1020
1020
1020
1020
1021
1021
1021
1021
1021
1021
1021
1022
1022
1022
1023
1023
1023
1024
1024
1024
1025
1025
1025

Ozone (du)

376
381
386
392
393
394
396
393
391
388
390
391
392
391
391
390
392
393
394
390
387
383
380
377

Tuesday 6

Waning Gibbous 83%

20:55

10:43

07 Bad
08 Bad
09 Bad
10 Bad
11 Bad
12 Bad
13 OK
14 OK
15 OK
16 OK
17 Bad
18 Bad
19 Bad
20 Bad
21 Bad
22 Bad
23 Bad
00 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)

88
87
83
74
64
51
46
38
30
42
55
70
82
92
99
100
100
100

Low Clouds (% Sky Obscured)

77
76
73
64
59
51
46
37
29
34
38
45
58
70
82
86
90
94

Medium Clouds (% Sky Obscured)

42
47
51
35
18
0
1
1
1
13
30
47
65
83
99
100
100
100

High Clouds (% Sky Obscured)

0
0
0
0
1
1
2
2
1
24
49
69
76
80
89
79
66
42

ISS Passover

Visibility (miles)

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

Fog (%)

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

Precipitation Probability (%)

18
12
4
3
2
0
0
0
0
0
0
0
7
16
24
62
89
95

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.3
0.6
0.8

Wind Speed/Direction (mph)

6
6
6
6
7
8
8
9
9
9
10
11
12
13
15
17
17
17

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

89
89
87
87
84
83
80
81
83
84
84
83
84
87
91
94
96
96

Pressure (mb)

1026
1026
1027
1027
1027
1027
1027
1027
1027
1026
1026
1025
1025
1024
1023
1023
1022
1021

Ozone (du)

374
369
365
360
363
366
370
372
374
376
375
375
374
374
374
375
373
372

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

Generated: 31/12/25 07:47:41. Forecast: 31/12/25 to 06/01/26. Timezone: UTC+1.00