Clear Outside v1.0 - International Weather Forecasts For Astronomers

Friday 28

First Quarter 55%

13:15

00:22

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
21 Bad
22 Bad
23 Bad
00 Bad

Sun - Rise: 08:00, Set: 16:08, Transit: 12:04. Moon - Rise: 13:15, Set: 00:22. Civil Dark: 16:48 - 07:20. Nautical Dark: 17:31 - 06:37. Astro Dark: 18:12 - 05:56

Total Clouds (% Sky Obscured)

86
80
82
83
80
82
93
100
100
100
100
98
93
75
23
43
63
83
100
100
98
100
100
100

Low Clouds (% Sky Obscured)

29
43
48
41
45
48
55
73
91
92
54
63
64
52
23
43
25
34
49
28
32
40
50
55

Medium Clouds (% Sky Obscured)

0
16
54
52
18
21
78
100
100
100
100
95
85
22
3
21
63
70
100
100
96
100
100
81

High Clouds (% Sky Obscured)

55
55
33
50
0
0
36
1
1
17
2
0
0
0
0
0
0
0
0
0
0
0
15
15

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
2
8
5
9
6
9
9
9
9
9
9
5
7
6

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

Precipitation Probability (%)

3
0
16
3
22
29
36
57
88
95
95
95
95
57
35
6
16
16
26
31
60
72
69
69

Precipitation Amount (mm)

0
0
0
0
0
0
0
0.3
0.4
1.5
0.5
1
0.9
0.4
0
0
0
0
0
0
0.3
0.4
0.5
0.5

Wind Speed/Direction (mph)

18
18
16
19
18
18
18
18
19
23
25
22
26
26
26
24
22
21
20
19
19
18
14
13

Chance of Frost

Temperature (°C)

9
9
10
9
9
9
9
9
9
10
9
8
9
8
9
9
9
9
8
9
9
9
8
8

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

82
80
81
80
80
81
82
81
82
81
93
91
85
84
77
73
73
74
74
73
75
82
87
87

Pressure (mb)

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

Ozone (du)

268
269
269
268
270
274
276
278
280
282
284
286
292
295
297
297
298
301
303
305
307
311
313
315

Saturday 29

Waxing Gibbous 66%

13:26

No Set

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
21 Bad
22 Bad
23 OK
00 OK

Sun - Rise: 08:02, Set: 16:07, Transit: 12:04. Moon - Rise: 13:26, Set: No Set. Civil Dark: 16:47 - 07:22. Nautical Dark: 17:30 - 06:39. Astro Dark: 18:11 - 05:58

Total Clouds (% Sky Obscured)

100
98
99
98
94
95
96
99
96
94
73
69
69
85
92
79
94
83
91
87
74
60
27
25

Low Clouds (% Sky Obscured)

56
58
57
58
57
52
59
62
50
32
24
24
30
7
28
45
58
65
58
70
52
43
27
25

Medium Clouds (% Sky Obscured)

92
33
91
96
31
55
79
48
47
52
56
57
51
66
91
42
88
83
85
86
64
30
3
1

High Clouds (% Sky Obscured)

20
25
25
15
64
91
53
95
85
67
48
0
0
0
0
0
0
0
0
50
50
13
4
4

ISS Passover

Visibility (miles)

6
9
9
9
9
9
9
9
9
9
9
7
8
6
8
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
None
Very Light Rain
None
None
None
None
None
None
None
None
None
None
Very Light Rain
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

57
52
43
31
24
20
25
7
7
8
27
42
52
54
39
19
22
31
37
30
13
14
1
1

Precipitation Amount (mm)

0.3
0
0.3
0
0
0
0
0
0
0
0
0
0
0.2
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

12
10
7
6
6
4
3
3
3
3
2
2
5
7
5
4
6
8
10
12
11
10
12
12

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

5
5
6
6
5
5
4
4
5
5
6
8
7
6
5
4
4
2
2
1
1
1
0
1

Dew Point (°C)

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

Relative Humidity (%)

88
88
82
79
77
78
82
84
84
79
77
77
75
82
88
85
82
79
78
78
76
76
74
72

Pressure (mb)

1005
1005
1005
1004
1004
1004
1003
1003
1003
1003
1003
1003
1003
1003
1004
1004
1005
1005
1006
1007
1008
1008
1009
1009

Ozone (du)

317
320
323
324
326
328
330
333
339
342
344
345
347
345
340
339
342
345
345
341
340
344
341
342

Sunday 30

Waxing Gibbous 77%

13:37

01:45

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

Sun - Rise: 08:03, Set: 16:06, Transit: 12:05. Moon - Rise: 13:37, Set: 01:45. Civil Dark: 16:46 - 07:23. Nautical Dark: 17:30 - 06:40. Astro Dark: 18:11 - 05:59

Total Clouds (% Sky Obscured)

24
30
52
69
74
69
70
84
74
17
9
9
8
16
11
33
97
97
65
95
96
96
96
97

Low Clouds (% Sky Obscured)

24
30
38
37
34
15
20
20
17
3
1
1
1
16
11
32
27
28
17
6
27
24
34
59

Medium Clouds (% Sky Obscured)

1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
5
9
73
78
67
84
89

High Clouds (% Sky Obscured)

3
3
3
0
0
0
0
0
0
0
0
0
0
3
1
9
25
23
12
18
16
9
7
38

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 (%)

5
8
8
17
25
22
8
4
2
2
2
5
4
5
1
0
1
0
1
0
1
1
4
33

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)

13
13
14
13
12
11
10
10
10
10
10
10
10
8
6
5
5
5
4
5
7
8
9
10

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

1
1
1
2
2
2
2
1
1
3
6
6
7
7
5
4
3
1
1
0
-0
2
1
2

Dew Point (°C)

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

Relative Humidity (%)

73
73
80
89
93
91
89
89
89
86
79
76
75
75
81
83
86
86
89
91
89
86
86
85

Pressure (mb)

1010
1010
1011
1011
1012
1012
1013
1014
1014
1014
1014
1014
1014
1014
1014
1014
1014
1014
1013
1013
1012
1011
1010
1009

Ozone (du)

344
346
348
351
350
339
337
333
330
327
323
320
316
314
311
310
307
304
299
296
292
289
286
280

Monday 1

Waxing Gibbous 86%

13:50

03:11

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
21 Bad
22 Bad
23 Bad
00 Bad

Sun - Rise: 08:04, Set: 16:06, Transit: 12:05. Moon - Rise: 13:50, Set: 03:11. Civil Dark: 16:46 - 07:24. Nautical Dark: 17:29 - 06:41. Astro Dark: 18:10 - 06:00

Total Clouds (% Sky Obscured)

98
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

71
83
85
89
92
94
96
98
94
90
86
80
74
68
64
58
54
67
80
94
92
90
90
89

Medium Clouds (% Sky Obscured)

94
100
100
100
100
80
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
94

High Clouds (% Sky Obscured)

71
100
100
100
95
100
100
100
100
100
100
100
100
100
83
33
20
0
0
7
43
60
56
65

ISS Passover

Visibility (miles)

9
9
5
3
7
9
4
6
2
2
2
1
7
3
2
3
2
4
1
0
3
9
6
5

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
Light Rain
Light Rain
Very Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain

Precipitation Probability (%)

41
49
74
81
81
95
95
95
95
95
95
95
95
95
89
92
95
92
87
89
87
88
95
87

Precipitation Amount (mm)

0
0
0.4
0.4
0.3
0.5
1.3
1.9
1.6
2.1
2
1.1
0.8
0.7
0.5
0.5
0.7
0.6
0.6
0.6
0.5
0.6
1
0.7

Wind Speed/Direction (mph)

12
15
18
21
24
27
26
25
25
25
25
25
24
23
22
24
26
29
24
21
20
19
18
19

Chance of Frost

Temperature (°C)

6
6
7
7
8
9
10
10
11
11
12
12
12
12
12
12
12
12
11
10
9
9
9
9

Feels Like (°C)

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

Dew Point (°C)

4
5
6
6
6
7
8
9
10
11
11
12
11
11
11
11
11
11
10
9
8
7
8
7

Relative Humidity (%)

86
90
91
90
88
88
90
91
91
95
95
96
92
93
93
93
92
92
95
98
93
90
91
87

Pressure (mb)

1008
1006
1005
1003
1001
999
997
996
995
994
993
992
991
990
989
989
988
988
988
989
989
990
990
991

Ozone (du)

276
274
271
268
267
267
266
267
267
267
269
271
273
274
275
276
273
276
276
282
288
296
303
310

Tuesday 2

Waxing Gibbous 94%

14:06

04:42

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
21 Bad
22 Bad
23 Bad
00 Bad

Sun - Rise: 08:06, Set: 16:05, Transit: 12:06. Moon - Rise: 14:06, Set: 04:42. Civil Dark: 16:45 - 07:26. Nautical Dark: 17:29 - 06:42. Astro Dark: 18:10 - 06:01

Total Clouds (% Sky Obscured)

99
99
97
96
95
48
71
15
14
29
38
51
64
77
84
91
97
81
66
52
59
66
73
72

Low Clouds (% Sky Obscured)

87
85
80
74
70
48
46
15
14
29
31
28
25
23
33
43
54
51
47
44
46
51
52
64

Medium Clouds (% Sky Obscured)

91
72
77
69
53
8
32
2
14
29
38
51
43
37
45
55
60
49
38
23
34
49
61
61

High Clouds (% Sky Obscured)

60
10
0
0
0
1
2
3
14
29
38
51
35
35
39
44
48
31
19
12
4
2
2
33

ISS Passover

Visibility (miles)

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

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

Precipitation Probability (%)

67
63
64
64
72
73
66
47
51
54
39
54
54
45
44
45
49
44
38
30
34
36
41
43

Precipitation Amount (mm)

0.4
0.4
0.3
0.3
0.4
0.5
0.4
0
0
0.2
0
0
0
0
0
0
0.2
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

18
17
17
15
14
14
13
13
12
13
15
16
15
14
13
11
10
9
8
8
8
8
8
9

Chance of Frost

Temperature (°C)

9
8
8
8
8
8
7
7
7
8
9
9
9
9
9
8
8
7
7
7
7
7
7
7

Feels Like (°C)

1
1
0
2
2
2
3
3
4
6
5
5
5
5
6
5
5
5
3
4
5
5
4
4

Dew Point (°C)

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

Relative Humidity (%)

87
87
88
85
79
78
82
85
85
81
80
78
78
80
81
82
87
88
88
90
90
90
90
90

Pressure (mb)

992
993
994
995
995
996
997
997
998
998
999
999
1000
1000
1000
1001
1001
1002
1002
1003
1003
1003
1004
1004

Ozone (du)

315
318
317
319
321
320
319
318
319
320
320
322
325
327
329
329
328
327
325
323
321
321
322
322

Wednesday 3

Waxing Gibbous 98%

14:28

06:19

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

Sun - Rise: 08:07, Set: 16:05, Transit: 12:06. Moon - Rise: 14:28, Set: 06:19. Civil Dark: 16:45 - 07:27. Nautical Dark: 17:28 - 06:43. Astro Dark: 18:10 - 06:02

Total Clouds (% Sky Obscured)

69
63
70
79
89
82
74
66
54
46
35
37
36
33
21
10
3
30
57
87
91
96
100
100

Low Clouds (% Sky Obscured)

69
63
70
72
62
59
56
55
52
46
35
37
36
33
21
10
3
4
4
4
6
8
11
30

Medium Clouds (% Sky Obscured)

57
54
61
69
77
66
52
35
19
7
0
0
0
0
0
0
0
0
0
0
29
57
87
93

High Clouds (% Sky Obscured)

62
63
70
47
25
17
9
1
1
0
0
0
0
0
0
0
0
9
14
13
22
32
41
58

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
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

Precipitation Probability (%)

38
32
49
55
55
56
42
28
25
17
2
8
11
16
12
11
1
1
2
1
3
4
3
12

Precipitation Amount (mm)

0
0
0
0.2
0.3
0.3
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

8
8
8
7
6
6
5
5
4
5
6
7
6
6
7
6
6
7
7
8
9
10
11
12

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

5
5
5
5
5
5
5
5
5
6
6
6
6
6
6
6
6
6
5
5
5
5
5
4

Relative Humidity (%)

90
90
88
90
90
90
88
88
87
85
81
78
80
82
84
85
87
90
88
88
90
87
85
81

Pressure (mb)

1004
1005
1005
1006
1006
1007
1007
1008
1009
1009
1009
1009
1009
1009
1009
1009
1009
1008
1008
1007
1007
1005
1004
1003

Ozone (du)

322
323
323
324
325
327
330
333
336
331
325
319
317
315
312
311
310
309
308
307
306
308
311
313

Thursday 4

Full Moon 100%

15:02

07:56

Sun - Rise: 08:09, Set: 16:04, Transit: 12:06. Moon - Rise: 15:02, Set: 07:56. Civil Dark: 16:45 - 07:28. Nautical Dark: 17:28 - 06:45. Astro Dark: 18:09 - 06:03

Total Clouds (% Sky Obscured)

Low Clouds (% Sky Obscured)

Medium Clouds (% Sky Obscured)

High Clouds (% Sky Obscured)

ISS Passover

Visibility (miles)

Fog (%)

Precipitation Type

Precipitation Probability (%)

Precipitation Amount (mm)

Wind Speed/Direction (mph)

Chance of Frost

Temperature (°C)

Feels Like (°C)

Dew Point (°C)

Relative Humidity (%)

Pressure (mb)

Ozone (du)

Forecast for Aberystwyth, Ceredigion, United Kingdom (52.42,-4.08)

Generated: 28/11/25 01:02:42. Forecast: 28/11/25 to 04/12/25. Timezone: UTC+0.00