Clear Outside v1.0 - International Weather Forecasts For Astronomers

Sunday 28

Waxing Gibbous 72%

12:37

02:34

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

Sun - Rise: 08:42, Set: 16:43, Transit: 12:42. Moon - Rise: 12:37, Set: 02:34. Civil Dark: 17:22 - 08:03. Nautical Dark: 18:04 - 07:21. Astro Dark: 18:44 - 06:41

Total Clouds (% Sky Obscured)

0
0
0
2
1
6
12
16
11
9
5
17
29
76
87
89
92
90
92
96
87
85
87
78

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
17
29
76
87
89
92
90
92
96
87
84
87
76

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)

0
0
0
0
1
6
12
16
11
8
4
2
1
1
0
0
0
2
0
2
1
1
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
0
0
0
0
1
100
100
100
100
100
27
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
0
1
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)

5
4
3
5
5
5
6
6
5
5
4
4
4
3
4
4
4
6
5
5
4
4
5
4

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

83
81
81
80
78
78
75
75
76
78
79
81
84
82
79
79
80
81
86
92
94
94
87
84

Pressure (mb)

1029
1028
1028
1028
1028
1027
1027
1027
1027
1026
1026
1026
1027
1027
1027
1026
1025
1025
1025
1025
1025
1025
1025
1025

Ozone (du)

295
294
294
295
295
295
298
300
301
298
294
293
295
295
299
301
303
303
298
294
291
290
286
286

Monday 29

Waxing Gibbous 82%

12:58

04:02

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

Sun - Rise: 08:42, Set: 16:44, Transit: 12:43. Moon - Rise: 12:58, Set: 04:02. Civil Dark: 17:23 - 08:03. Nautical Dark: 18:05 - 07:21. Astro Dark: 18:45 - 06:41

Total Clouds (% Sky Obscured)

52
89
66
41
66
77
45
29
42
48
53
17
35
40
37
46
44
38
31
1
72
50
77
91

Low Clouds (% Sky Obscured)

49
89
66
38
66
76
45
29
42
48
53
17
35
40
37
46
44
38
31
0
61
50
70
89

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
13
0
33
61

High Clouds (% Sky Obscured)

1
1
2
1
3
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 (%)

1
2
7
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
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)

4
6
5
6
9
10
10
10
9
8
7
7
7
5
5
5
6
6
6
4
4
4
4
4

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

83
81
81
76
63
58
56
54
56
71
84
83
83
80
74
67
63
62
63
71
80
83
86
86

Pressure (mb)

1025
1026
1026
1026
1027
1027
1027
1027
1028
1028
1028
1029
1030
1030
1031
1031
1031
1030
1030
1031
1031
1031
1031
1031

Ozone (du)

286
286
282
282
285
284
285
284
285
281
280
279
281
287
294
305
317
324
325
333
338
341
342
343

Tuesday 30

Waxing Gibbous 82%

13:27

05:33

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

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)

86
94
43
79
73
91
77
71
64
40
29
71
93
100
85
100
86
72
58
44
18
2
4
6

Low Clouds (% Sky Obscured)

81
78
41
70
18
79
72
64
62
30
0
58
89
100
79
100
83
67
50
31
14
1
1
1

Medium Clouds (% Sky Obscured)

46
71
0
42
45
55
41
32
18
13
12
12
16
20
13
8
9
7
6
4
2
0
0
0

High Clouds (% Sky Obscured)

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

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
3
3
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 (%)

9
7
1
4
2
3
10
7
1
0
0
0
1
2
20
24
14
22
10
13
6
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
4
3
3
3
4
5
5
6
6
6
8
9
11
10
11
10
9
9
8
9
9

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

86
84
84
84
83
83
81
81
81
81
81
81
81
73
68
79
91
83
85
86
86
91
89
91

Pressure (mb)

1031
1031
1031
1031
1030
1030
1030
1030
1029
1029
1029
1029
1029
1029
1028
1028
1027
1027
1026
1026
1026
1025
1025
1025

Ozone (du)

343
339
337
335
336
335
334
331
329
326
327
326
325
323
325
324
321
321
323
321
322
322
325
322

Wednesday 31

Waxing Gibbous 91%

14:10

07:02

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: 08:42, 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)

9
31
56
82
86
91
95
94
94
91
90
98
100
98
95
93
85
78
74
76
80
82
74
83

Low Clouds (% Sky Obscured)

1
21
40
60
70
86
95
94
94
91
88
85
81
78
76
74
68
63
57
60
64
70
65
67

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
9
21
28
24
24
18
12
7
0
0
2
8
4
7

High Clouds (% Sky Obscured)

7
15
33
56
36
20
1
4
3
5
37
68
100
80
59
39
26
13
4
5
5
6
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
3
4
3
4
5
3
9
11
12
12
10
10
12
16
27
24
41

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
11
12
13
13
13
14
14
15
16
16
17
17
18
18
19
18
17
17
17
17
17
18

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

91
92
92
92
92
92
87
88
89
92
92
92
92
91
83
77
77
80
83
86
88
89
91
91

Pressure (mb)

1024
1024
1023
1022
1021
1020
1019
1018
1017
1016
1015
1015
1014
1013
1012
1011
1010
1009
1009
1008
1008
1008
1007
1007

Ozone (du)

321
322
319
316
311
312
315
316
314
311
309
307
309
312
312
324
324
324
330
335
345
359
366
382

Thursday 1

Waxing Gibbous 97%

15:11

08:19

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: 08:42, 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)

84
88
94
100
100
100
100
92
84
78
98
97
95
96
96
97
93
91
89
86
81
76
74
70

Low Clouds (% Sky Obscured)

65
69
73
77
74
66
62
55
52
40
62
69
76
76
78
77
76
77
82
74
69
67
66
66

Medium Clouds (% Sky Obscured)

9
17
28
37
41
52
100
87
73
65
85
73
85
90
90
95
93
91
89
73
61
52
35
18

High Clouds (% Sky Obscured)

0
33
67
100
100
100
100
67
33
0
0
0
0
0
0
0
0
0
25
10
2
0
0
0

ISS Passover

Visibility (miles)

0
0
0
0
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 (%)

29
16
24
22
12
12
9
11
12
12
13
11
5
10
11
10
14
16
19
23
22
17
21
21

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)

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

Chance of Frost

Temperature (°C)

2
2
2
2
2
1
1
1
1
1
1
1
1
1
2
2
3
3
3
3
2
2
1
1

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

94
96
96
96
93
91
89
91
91
89
88
86
84
83
81
80
79
80
80
80
83
84
88
88

Pressure (mb)

1007
1007
1007
1007
1006
1006
1006
1006
1006
1005
1005
1002
1002
1002
1002
1002
1002
1002
1002
1002
1002
1002
1002
1002

Ozone (du)

391
390
386
386
387
388
390
391
388
383
382
376
370
364
359
353
348
344
341
337
335
332
329
323

Friday 2

Waxing Gibbous 100%

16:31

09:16

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 OK
17 OK
18 OK
19 OK
20 OK

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)

68
67
74
76
80
81
78
84
86
84
86
86
87
79
72
65
61
53
50
43
39
33
30
29

Low Clouds (% Sky Obscured)

65
67
74
76
77
60
42
58
73
84
85
79
76
61
46
29
26
23
20
22
25
33
30
29

Medium Clouds (% Sky Obscured)

0
1
1
2
14
26
39
44
53
59
62
64
67
49
33
20
12
6
0
0
0
0
0
0

High Clouds (% Sky Obscured)

0
0
0
0
20
40
70
52
35
23
30
35
46
67
72
65
61
53
50
40
17
3
2
1

ISS Passover

Visibility (miles)

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

Precipitation Probability (%)

19
17
14
12
13
14
12
30
38
45
44
38
22
16
8
1
1
1
0
1
1
0
1
1

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

89
93
89
86
83
88
91
96
98
96
96
94
92
91
86
81
77
77
77
78
78
80
83
81

Pressure (mb)

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

Ozone (du)

316
309
313
317
321
321
320
320
322
324
326
337
348
359
367
374
381
383
384
386
389
392
395
400

Saturday 3

Full Moon 99%

18:00

09:56

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

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)

27
38
48
59
63
61
59
50
41
35
45
49
49
54
60
72

Low Clouds (% Sky Obscured)

27
38
48
54
48
44
37
32
27
22
31
43
49
46
43
36

Medium Clouds (% Sky Obscured)

0
2
5
12
17
26
32
30
34
35
45
41
33
43
54
64

High Clouds (% Sky Obscured)

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

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 (%)

0
3
7
9
14
16
15
14
15
17
20
16
1
5
7
7

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

-3
-3
-3
-3
-3
-3
-3
-3
-3
-2
-2
-2
-3
-3
-3
-3

Relative Humidity (%)

81
81
83
84
84
87
87
89
89
89
89
89
86
86
80
76

Pressure (mb)

1002
1003
1003
1004
1004
1004
1005
1005
1005
1006
1006
1007
1007
1008
1008
1008

Ozone (du)

405
410
415
419
424
414
403
393
387
381
375
369
363
358
359
361

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

Generated: 28/12/25 21:15:48. Forecast: 28/12/25 to 03/01/26. Timezone: UTC+1.00