Clear Outside v1.0 - International Weather Forecasts For Astronomers

Sunday 28

Waxing Gibbous 61%

12:09

02:30

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
07 Bad
08 Bad
09 Bad
10 Bad
11 Bad
12 Bad
13 Bad
14 Bad
15 Bad

Sun - Rise: 08:46, Set: 16:05, Transit: 12:26. Moon - Rise: 12:09, Set: 02:30. Civil Dark: 16:49 - 08:01. Nautical Dark: 17:36 - 07:14. Astro Dark: 18:20 - 06:31

Total Clouds (% Sky Obscured)

71
78
83
86
90
96
100
100
100
100
100
100
100
100
100
100
94
92
92
85
85
86
80
80

Low Clouds (% Sky Obscured)

71
78
81
72
64
53
50
50
52
46
31
28
34
48
50
53
48
50
52
40
52
50
38
37

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
16
48
48
52
67
88
81
65
63
42
55
55
55
54
47
21
22

High Clouds (% Sky Obscured)

71
78
83
74
75
87
100
100
100
100
100
100
100
100
100
100
84
77
71
76
75
76
71
72

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

74
75
73
75
82
88
91
93
93
93
93
93
93
93
93
94
93
93
93
89
86
85
83
86

Pressure (mb)

1034
1034
1034
1034
1034
1034
1034
1033
1033
1033
1033
1032
1032
1031
1031
1032
1032
1032
1032
1032
1032
1032
1032
1032

Ozone (du)

295
294
294
293
294
294
293
292
291
288
287
284
281
279
281
283
284
281
281
280
280
277
278
279

Monday 29

Waxing Gibbous 72%

12:24

04:04

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 OK
06 Good
07 OK
08 OK
09 OK
10 Bad
11 Bad
12 OK
13 OK
14 OK
15 Good

Sun - Rise: 08:46, Set: 16:06, Transit: 12:26. Moon - Rise: 12:24, Set: 04:04. Civil Dark: 16:50 - 08:01. Nautical Dark: 17:37 - 07:15. Astro Dark: 18:21 - 06:31

Total Clouds (% Sky Obscured)

61
60
56
49
49
53
50
67
82
79
87
73
57
37
16
28
34
41
49
59
43
45
32
17

Low Clouds (% Sky Obscured)

27
29
26
28
41
47
47
63
65
71
85
71
57
37
16
28
29
41
46
48
39
38
30
14

Medium Clouds (% Sky Obscured)

15
50
18
22
13
5
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

61
60
56
40
35
27
24
26
30
19
33
28
27
29
16
22
26
33
24
30
43
38
3
17

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
1
2
7
0
3
2
1
2
1
1
1
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)

6
5
6
5
5
6
6
6
5
6
7
8
8
8
7
6
6
5
4
4
4
4
4
3

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

89
88
83
83
84
77
85
82
79
80
77
69
64
68
72
72
76
83
81
77
76
76
78
82

Pressure (mb)

1032
1032
1033
1033
1034
1034
1035
1035
1035
1036
1036
1036
1036
1037
1037
1038
1038
1039
1039
1039
1039
1039
1038
1038

Ozone (du)

278
276
276
278
277
276
276
279
281
283
284
286
292
294
296
303
305
305
305
305
307
309
311
311

Tuesday 30

Waxing Gibbous 82%

12:46

05:43

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

Sun - Rise: 08:45, Set: 16:07, Transit: 12:27. Moon - Rise: 12:46, Set: 05:43. Civil Dark: 16:51 - 08:01. Nautical Dark: 17:38 - 07:15. Astro Dark: 18:21 - 06:31

Total Clouds (% Sky Obscured)

4
7
13
14
9
7
13
5
5
33
64
49
34
21
47
27
56
76
78
74
74
62
66
67

Low Clouds (% Sky Obscured)

0
0
4
4
7
5
11
5
5
31
58
44
32
19
46
26
51
74
77
72
69
62
63
66

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)

4
7
13
14
9
7
6
3
3
4
10
6
12
14
4
14
16
19
19
22
28
11
20
16

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
11
89
19
52
52
52
52
52
52
52
52
52
52

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
1
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)

3
2
2
2
2
2
3
3
3
3
3
4
4
4
5
5
5
5
6
6
8
8
8
9

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

86
88
88
88
88
86
86
87
89
89
91
92
94
94
94
94
92
94
89
84
81
77
80
85

Pressure (mb)

1038
1038
1038
1038
1038
1038
1038
1037
1037
1037
1036
1036
1035
1035
1034
1034
1033
1033
1033
1032
1031
1031
1030
1029

Ozone (du)

311
310
308
306
306
306
307
310
310
309
307
307
306
307
307
309
311
313
315
314
313
313
309
308

Wednesday 31

Waxing Gibbous 91%

13:23

07:18

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
07 Bad
08 Bad
09 Bad
10 Bad
11 Bad
12 Bad
13 Bad
14 Bad
15 Bad

Sun - Rise: 08:45, Set: 16:08, Transit: 12:27. Moon - Rise: 13:23, Set: 07:18. Civil Dark: 16:52 - 08:01. Nautical Dark: 17:39 - 07:14. Astro Dark: 18:22 - 06:31

Total Clouds (% Sky Obscured)

70
61
63
74
72
65
55
53
71
85
100
100
100
100
100
100
100
91
80
51
46
44
54
43

Low Clouds (% Sky Obscured)

69
61
63
65
59
53
49
47
55
62
69
76
85
92
63
74
74
68
60
33
35
41
45
29

Medium Clouds (% Sky Obscured)

0
0
0
0
0
1
1
1
18
34
47
33
16
0
0
0
0
0
0
0
0
1
1
2

High Clouds (% Sky Obscured)

15
2
2
4
13
6
5
29
47
68
100
100
95
100
100
99
80
91
75
23
18
10
22
11

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
6
9
9
9
9
9
9

Fog (%)

52
52
52
52
52
52
52
52
52
52
52
52
52
52
52
52
52
52
52
52
52
52
52
52

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
0
1
1
0
2
3
4
8
10
10
22
26
19
20
25
25
24
10
5
4
4
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
9
9
9
10
10
12
13
14
14
13
13
13
13
13
12
12
11
11
12
13
14
14
15

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

91
93
94
94
86
81
78
80
79
79
77
82
86
91
89
89
89
88
83
75
73
80
80
82

Pressure (mb)

1028
1028
1027
1026
1025
1024
1023
1022
1021
1020
1019
1018
1017
1016
1015
1015
1015
1015
1015
1015
1015
1014
1014
1014

Ozone (du)

305
306
309
310
309
309
305
302
304
301
308
310
312
317
319
322
327
331
332
330
331
339
348
357

Thursday 1

Waxing Gibbous 97%

14:24

08:37

16 OK
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
07 Bad
08 Bad
09 Bad
10 Bad
11 Bad
12 Bad
13 Bad
14 Bad
15 Bad

Sun - Rise: 08:45, Set: 16:09, Transit: 12:27. Moon - Rise: 14:24, Set: 08:37. Civil Dark: 16:53 - 08:01. Nautical Dark: 17:40 - 07:14. Astro Dark: 18:23 - 06:31

Total Clouds (% Sky Obscured)

33
41
41
68
85
77
71
63
76
63
82
90
78
83
82
85
83
79
74
69
74
81
89
85

Low Clouds (% Sky Obscured)

14
2
11
20
27
25
23
19
20
22
23
26
60
83
82
85
83
79
74
69
73
74
73
67

Medium Clouds (% Sky Obscured)

4
8
7
9
13
67
58
58
71
44
68
82
26
44
36
36
39
51
61
69
64
38
7
27

High Clouds (% Sky Obscured)

5
30
14
59
75
59
47
30
35
7
12
8
4
2
1
1
1
1
0
0
0
0
0
0

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
0
9
6
3
0
0
1
1
4
6
9

Fog (%)

52
52
52
52
52
52
52
52
52
52
52
52
52
52
52
52
52
52
52
52
52
52
52
52

Precipitation Type

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

Precipitation Probability (%)

8
6
10
10
7
10
10
6
17
21
14
22
32
13
39
51
61
66
64
55
46
37
30
30

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

86
89
88
89
91
88
85
83
83
85
89
91
93
98
93
94
96
100
98
96
96
89
81
75

Pressure (mb)

1014
1014
1013
1013
1013
1013
1013
1013
1012
1012
1012
1012
1012
1011
1011
1004
1004
1003
1004
1004
1004
1003
1003
1003

Ozone (du)

357
354
351
352
350
350
349
345
340
335
331
331
327
326
327
325
323
322
321
320
319
318
317
316

Friday 2

Waxing Gibbous 100%

15:48

09:31

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
07 Bad
08 Bad
09 Bad
10 Bad
11 Bad
12 Bad
13 Bad
14 Bad
15 Bad

Sun - Rise: 08:45, Set: 16:10, Transit: 12:28. Moon - Rise: 15:48, Set: 09:31. Civil Dark: 16:54 - 08:01. Nautical Dark: 17:41 - 07:14. Astro Dark: 18:24 - 06:31

Total Clouds (% Sky Obscured)

81
78
81
84
89
88
85
81
68
54
41
51
61
70
66
66
66
64
59
52
67
83
94
78

Low Clouds (% Sky Obscured)

61
52
54
56
59
51
42
33
33
37
36
44
52
60
59
59
58
54
50
50
48
45
41
42

Medium Clouds (% Sky Obscured)

47
65
76
83
89
86
77
69
53
37
20
27
33
40
30
20
9
9
8
8
25
40
56
50

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

Fog (%)

52
52
52
52
52
52
52
52
52
52
52
52
52
52
52
52
52
52
52
52
52
52
52
52

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 (%)

30
29
31
29
25
28
28
25
26
25
22
26
26
24
24
22
19
27
28
24
27
26
22
20

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

78
80
84
84
87
87
84
81
78
81
87
91
89
89
90
89
89
87
83
78
74
76
76
77

Pressure (mb)

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

Ozone (du)

323
329
335
340
345
349
360
371
381
389
396
403
405
408
410
407
404
401
392
384
375
368
362
355

Saturday 3

Full Moon 99%

No Rise

10:03

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
07 Bad
08 Bad
09 Bad
10 Bad
11 Bad

Sun - Rise: 08:44, Set: 16:11, Transit: 12:28. Moon - Rise: No Rise, Set: 10:03. Civil Dark: 16:55 - 08:00. Nautical Dark: 17:42 - 07:14. Astro Dark: 18:25 - 06:30

Total Clouds (% Sky Obscured)

74
67
70
76
84
80
75
70
70
73
75
76
78
77
68
63
60
52
45
38

Low Clouds (% Sky Obscured)

45
46
50
55
61
63
66
60
58
63
75
76
78
77
68
58
39
26
15
4

Medium Clouds (% Sky Obscured)

44
40
38
35
32
25
18
14
24
33
41
37
37
33
32
21
11
11
10
9

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
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

Fog (%)

52
52
52
52
52
52
52
52
52
52
52
52
52
52
52
52
52
52
52
52

Precipitation Type

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

Precipitation Probability (%)

18
11
17
19
17
22
21
9
19
22
17
74
95
95
90
61
41
31
21
9

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0.4
0.9
1.3
0.6
0.2
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

78
80
81
83
83
83
86
87
89
89
91
89
91
91
91
94
94
98
94
94

Pressure (mb)

1007
1007
1008
1008
1009
1009
1009
1009
1009
1009
1009
1009
1008
1008
1007
1008
1008
1009
1009
1009

Ozone (du)

355
356
357
348
340
332
332
333
334
333
332
331
334
336
338
342
345
348
351
353

Forecast for Cathedral's Quarter, Belfast, United Kingdom (54.60,-5.93)

Generated: 28/12/25 15:53:46. Forecast: 28/12/25 to 03/01/26. Timezone: UTC+0.00