Clear Outside v1.0 - International Weather Forecasts For Astronomers

Sunday 28

Waxing Gibbous 61%

12:24

02:36

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

Sun - Rise: 08:44, Set: 16:44, Transit: 12:44. Moon - Rise: 12:24, Set: 02:36. Civil Dark: 17:23 - 08:05. Nautical Dark: 18:05 - 07:23. Astro Dark: 18:45 - 06:43

Total Clouds (% Sky Obscured)

94
88
88
78
73
78
82
86
65
39
0
0
0
0
0
0
1
0
0
0
0
0
0
0

Low Clouds (% Sky Obscured)

59
71
65
63
73
78
80
85
65
39
0
0
0
0
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
0
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

25
9
17
7
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0

ISS Passover

Visibility (miles)

9
9
9
8
6
5
1
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
100
100
94
70

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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

96
98
96
96
98
98
98
91
81
77
73
68
67
71
76
73
69
69
70
71
71
71
68
68

Pressure (mb)

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

Ozone (du)

303
304
302
301
301
300
298
296
296
296
296
296
296
297
297
296
296
298
299
299
301
301
301
302

Monday 29

Waxing Gibbous 72%

12:39

No Set

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

Sun - Rise: 08:44, Set: 16:44, Transit: 12:44. Moon - Rise: 12:39, Set: No Set. Civil Dark: 17:24 - 08:05. Nautical Dark: 18:06 - 07:23. Astro Dark: 18:46 - 06:43

Total Clouds (% Sky Obscured)

3
8
4
1
0
34
55
54
38
41
56
66
63
76
76
87
78
68
86
60
94
88
40
32

Low Clouds (% Sky Obscured)

0
0
0
0
0
32
52
52
36
41
56
66
63
76
76
86
77
66
85
60
94
88
40
29

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)

3
8
4
1
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
11
6
1
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 (%)

38
15
3
2
93
100
100
100
100
23
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
2
1
9
12
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)

7
7
7
6
6
5
5
4
5
5
6
6
6
5
6
7
10
6
7
7
8
8
10
12

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

-7
-8
-8
-8
-8
-7
-7
-5
-3
-2
0
0
1
2
1
0
-2
-1
-2
-2
-2
-3
-4
-5

Relative Humidity (%)

64
62
61
62
63
67
72
77
78
80
83
83
88
94
94
91
77
80
77
77
76
70
62
55

Pressure (mb)

1027
1027
1026
1026
1026
1026
1026
1026
1026
1026
1025
1025
1025
1025
1025
1025
1025
1025
1025
1025
1026
1026
1026
1027

Ozone (du)

303
304
301
298
301
300
298
301
301
301
300
297
290
284
286
286
286
286
287
284
280
283
283
284

Tuesday 30

Waxing Gibbous 82%

13:00

04:04

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

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)

44
23
42
60
43
37
39
0
0
1
1
2
3
2
26
63
37
65
56
57
51
54
39
26

Low Clouds (% Sky Obscured)

38
15
39
60
43
37
39
0
0
0
0
0
1
0
26
63
37
65
56
51
51
54
38
20

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
8
12
2
13
19
21
17
25
18
9

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
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
1
0
0
0
0
0
0
0
0
0
0
0
0
2
5
1
4
1
0
6
11
15

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

51
51
58
65
69
69
71
71
69
63
60
57
57
64
69
73
74
75
75
74
74
71
71
70

Pressure (mb)

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

Ozone (du)

286
285
283
284
283
281
282
289
294
299
309
317
321
327
330
333
340
337
337
336
336
333
332
332

Wednesday 31

Waxing Gibbous 91%

13:28

05:35

03 OK
04 OK
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

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)

12
33
56
78
86
82
77
77
80
95
98
95
99
98
91
77
84
80
74
65
60
52
51
56

Low Clouds (% Sky Obscured)

1
30
56
78
83
82
77
77
80
82
88
93
99
93
86
75
80
79
67
59
55
52
51
43

Medium Clouds (% Sky Obscured)

4
3
2
1
6
15
22
18
18
18
18
23
23
35
41
35
34
33
32
26
12
0
0
0

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
6
12
18
15
11
7
5
5

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 (%)

19
17
14
9
9
8
6
6
7
7
13
16
17
15
13
9
8
7
6
6
4
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
3
4
4
5
6
7
7
8
9
8
8
7
7
7
7
6
6
7
7
8
8
8
8

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

69
70
71
73
76
76
77
76
72
71
76
80
83
88
89
89
89
89
89
91
93
92
92
92

Pressure (mb)

1029
1029
1028
1028
1028
1028
1028
1028
1027
1027
1026
1026
1025
1025
1025
1024
1024
1024
1024
1023
1023
1022
1022
1021

Ozone (du)

330
328
324
320
318
317
317
315
313
311
312
313
315
318
321
322
323
324
322
321
320
320
318
320

Thursday 1

Waxing Gibbous 97%

14:11

07:05

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
00 Bad
01 Bad
02 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)

51
63
74
85
90
95
100
100
100
100
99
97
96
95
99
100
100
100
100
100
99
99
99
100

Low Clouds (% Sky Obscured)

39
41
43
46
54
82
100
99
88
77
58
48
39
78
90
100
80
85
88
89
90
92
88
84

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
20
34
56
27
47
30
20
21
16
16
11

High Clouds (% Sky Obscured)

3
5
6
8
38
68
100
72
44
15
37
61
82
77
79
81
100
100
100
100
99
99
67
32

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
Very Light Rain

Precipitation Probability (%)

0
0
0
0
4
8
10
10
9
8
8
8
6
7
8
7
6
7
5
13
19
23
55
67

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
0.3

Wind Speed/Direction (mph)

9
9
9
10
11
12
12
12
13
14
14
14
14
14
13
13
14
15
16
16
16
15
15
14

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

92
92
92
92
92
91
87
83
80
73
65
62
62
64
64
65
64
65
66
66
70
74
78
81

Pressure (mb)

1020
1019
1018
1017
1016
1015
1015
1014
1013
1012
1011
1010
1009
1008
1007
1007
1006
1006
1005
1004
1003
1003
1002
1002

Ozone (du)

320
320
317
316
317
315
313
312
312
320
329
331
330
333
334
332
333
351
368
386
390
394
398
392

Friday 2

Waxing Gibbous 100%

15:13

08:22

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
00 Bad
01 Bad
02 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
96
91
83
83
85
87
82
80
81
85
84
83
87
89
90
91
93
97
82
67
52
59
66

Low Clouds (% Sky Obscured)

78
79
78
77
76
74
67
43
31
17
29
45
58
46
36
28
29
27
31
39
44
50
55
60

Medium Clouds (% Sky Obscured)

11
7
2
0
0
1
1
1
1
0
0
0
0
1
1
2
3
4
10
10
8
0
2
4

High Clouds (% Sky Obscured)

1
2
4
5
6
6
4
4
0
0
0
0
5
5
10
10
14
19
27
22
13
2
1
1

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

Very Light Rain
Very Light Rain
Very Light Rain
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

73
66
54
35
26
18
10
14
15
14
14
15
14
13
11
9
16
20
21
19
15
8
16
17

Precipitation Amount (mm)

0.3
0.3
0.2
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
12
11
11
10
10
10
10
10
11
10
9
8
8
7
7
7
8
8
8
8
8
9

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

84
88
89
91
91
91
89
91
86
84
81
83
88
89
86
84
81
80
80
80
77
77
75
78

Pressure (mb)

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

Ozone (du)

386
380
378
376
374
372
369
367
362
358
353
350
347
344
344
344
345
344
344
344
344
345
345
340

Saturday 3

Full Moon 99%

16:33

09:19

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
00 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)

75
77
81
83
84
84
86
87
89
89
87
83
80
79
79
81
76
77
79
78
77
80

Low Clouds (% Sky Obscured)

65
71
77
82
84
84
85
87
89
89
86
83
79
78
77
73
58
43
27
30
31
40

Medium Clouds (% Sky Obscured)

5
3
2
0
0
0
0
5
10
14
9
4
0
17
47
80
76
77
79
78
75
65

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

ISS Passover

Visibility (miles)

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

Fog (%)

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
Snow
Snow
None
None
None
None
None
None

Precipitation Probability (%)

17
20
20
17
28
33
34
29
23
13
21
29
37
45
47
40
33
23
3
20
26
30

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

81
84
84
86
86
89
91
94
84
78
70
73
73
76
73
70
67
71
72
77
83
87

Pressure (mb)

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

Ozone (du)

335
331
335
340
344
348
352
356
362
367
373
378
384
389
393
397
402
403
404
405
400
395

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

Generated: 28/12/25 03:35:57. Forecast: 28/12/25 to 03/01/26. Timezone: UTC+1.00