Clear Outside v1.0 - International Weather Forecasts For Astronomers

Friday 12

Waning Crescent 36%

01:22

12:38

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 OK
03 OK
04 Bad
05 Bad
06 Bad
07 Bad

Sun - Rise: 08:18, Set: 16:02, Transit: 12:10. Moon - Rise: 01:22, Set: 12:38. Civil Dark: 16:43 - 07:37. Nautical Dark: 17:27 - 06:53. Astro Dark: 18:09 - 06:12

Total Clouds (% Sky Obscured)

100
100
99
100
100
100
100
69
50
89
100
100
100
100
100
41
33
37
27
26
40
65
47
39

Low Clouds (% Sky Obscured)

7
34
46
55
36
35
43
38
35
43
42
38
43
62
71
41
33
37
27
26
40
64
47
39

Medium Clouds (% Sky Obscured)

99
64
82
99
100
100
100
69
21
82
100
100
100
96
66
0
0
21
0
0
0
0
0
0

High Clouds (% Sky Obscured)

46
50
99
100
97
100
100
35
5
2
8
44
48
88
100
0
0
0
0
0
0
14
14
9

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
3
5
17
19
16
10
10
8
8
22
12
14
18
19
14
9
7
14
8
2
4

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)

1
2
2
5
7
9
9
9
9
8
8
8
8
8
8
8
8
9
9
8
7
7
8
8

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

5
6
6
6
7
7
7
7
7
7
6
6
6
6
6
6
6
6
6
6
5
5
5
5

Relative Humidity (%)

90
90
85
84
84
84
87
87
90
90
90
90
91
90
90
91
91
91
93
93
91
91
90
90

Pressure (mb)

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

Ozone (du)

321
322
323
325
327
328
326
330
328
328
329
335
346
357
370
389
383
378
366
362
356
353
347
345

Saturday 13

Waning Crescent 27%

02:34

12:47

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
07 Bad

Sun - Rise: 08:19, Set: 16:02, Transit: 12:10. Moon - Rise: 02:34, Set: 12:47. Civil Dark: 16:43 - 07:38. Nautical Dark: 17:27 - 06:54. Astro Dark: 18:09 - 06:12

Total Clouds (% Sky Obscured)

46
66
74
77
60
94
100
95
99
98
99
100
100
98
100
100
100
100
100
100
99
100
99
99

Low Clouds (% Sky Obscured)

46
51
36
51
49
66
56
56
52
81
93
90
100
77
83
77
77
100
100
100
90
83
65
71

Medium Clouds (% Sky Obscured)

0
0
0
0
0
11
59
85
97
96
93
64
58
95
98
80
68
84
98
76
70
86
67
68

High Clouds (% Sky Obscured)

22
23
44
57
34
79
100
50
60
60
79
100
81
58
52
55
63
61
59
55
45
49
60
69

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 (%)

3
2
2
3
1
8
12
5
8
35
32
20
22
32
38
35
17
21
33
37
29
11
4
18

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
11
15
17
19
20
20
20
20
20
21
22
22
21
20
20
20
20
20
20
20
21
21

Chance of Frost

Temperature (°C)

6
6
8
9
9
10
10
9
9
9
9
9
9
9
9
9
10
10
10
10
10
10
10
10

Feels Like (°C)

4
4
4
4
5
5
5
4
4
4
4
4
3
3
4
4
4
4
4
5
5
4
5
5

Dew Point (°C)

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

Relative Humidity (%)

91
91
88
87
85
84
85
85
87
87
87
87
87
88
87
87
87
87
87
87
88
87
88
88

Pressure (mb)

1025
1025
1025
1025
1024
1023
1023
1022
1022
1022
1021
1021
1021
1021
1020
1020
1019
1019
1019
1018
1018
1017
1016
1016

Ozone (du)

342
335
332
329
325
320
315
311
308
305
301
300
299
299
300
299
297
295
295
293
295
296
293
288

Sunday 14

Waning Crescent 26%

03:47

12:57

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
07 Bad

Sun - Rise: 08:19, Set: 16:02, Transit: 12:11. Moon - Rise: 03:47, Set: 12:57. Civil Dark: 16:43 - 07:39. Nautical Dark: 17:28 - 06:55. Astro Dark: 18:09 - 06:13

Total Clouds (% Sky Obscured)

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

Low Clouds (% Sky Obscured)

66
66
68
71
64
66
61
58
90
99
100
100
96
100
92
96
94
96
96
95
95
94
90
86

Medium Clouds (% Sky Obscured)

77
90
62
68
88
95
87
91
100
93
75
89
100
97
99
100
95
38
38
40
40
40
40
45

High Clouds (% Sky Obscured)

61
94
98
97
100
100
100
100
100
94
78
100
100
100
100
29
50
73
100
100
100
100
96
90

ISS Passover

Visibility (miles)

9
9
9
9
9
9
8
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
Light Rain
None
Light Rain
Very Light Rain
Very Light Rain
Very Light Rain
Light Rain
Very Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain

Precipitation Probability (%)

21
14
24
31
32
41
44
45
51
68
58
72
73
73
70
89
63
84
95
95
95
95
95
95

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0.4
0
0.4
0.3
0.3
0.2
0.5
0.2
0.5
0.8
0.6
0.9
1.3
1.2
1.7

Wind Speed/Direction (mph)

21
22
22
22
23
22
23
22
23
23
23
24
26
26
26
27
26
25
23
22
21
19
18
16

Chance of Frost

Temperature (°C)

10
10
10
10
10
10
10
10
10
10
10
10
11
11
11
11
11
11
11
11
11
11
11
11

Feels Like (°C)

5
5
5
5
5
4
4
4
4
4
4
4
4
5
5
5
4
4
5
5
5
5
5
5

Dew Point (°C)

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

Relative Humidity (%)

88
88
87
88
87
85
84
84
80
77
83
77
83
81
83
83
83
83
81
81
83
83
83
84

Pressure (mb)

1016
1015
1015
1015
1014
1013
1012
1011
1011
1010
1009
1008
1008
1007
1006
1005
1005
1004
1003
1002
1002
1001
1001
1000

Ozone (du)

286
282
279
277
276
275
273
274
274
275
277
281
281
282
282
282
284
284
285
286
287
286
286
287

Monday 15

Waning Crescent 19%

05:01

13:09

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
07 Bad

Sun - Rise: 08:20, Set: 16:02, Transit: 12:11. Moon - Rise: 05:01, Set: 13:09. Civil Dark: 16:44 - 07:40. Nautical Dark: 17:28 - 06:56. Astro Dark: 18:09 - 06:14

Total Clouds (% Sky Obscured)

95
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)

82
82
82
82
80
78
76
82
91
94
69
54
43
43
46
48
46
43
39
38
38
33
35
40

Medium Clouds (% Sky Obscured)

50
55
53
96
100
100
100
100
100
100
98
97
95
97
99
100
100
100
100
92
100
100
100
100

High Clouds (% Sky Obscured)

80
92
96
100
95
73
96
93
100
100
94
87
81
82
87
93
95
98
100
100
100
100
100
100

ISS Passover

Visibility (miles)

9
8
9
3
4
3
3
3
8
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

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

Precipitation Probability (%)

95
95
95
95
95
95
95
95
95
95
95
83
73
63
48
29
31
22
13
11
6
0
0
0

Precipitation Amount (mm)

2.4
2.1
2.2
1.7
1.3
1.8
1.7
1.1
0.9
0.9
0.7
0.6
0.4
0.3
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

14
13
10
7
5
4
3
2
2
3
4
4
4
4
4
4
5
5
5
5
5
5
4
3

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

5
5
5
7
7
6
7
7
7
7
7
6
6
6
6
5
6
5
5
5
5
5
6
6

Dew Point (°C)

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

Relative Humidity (%)

80
78
84
91
96
96
95
96
93
93
91
88
85
84
85
84
85
84
81
81
82
82
82
84

Pressure (mb)

1000
1000
1000
1000
1000
1000
1001
1001
1001
1002
1002
1003
1004
1004
1005
1006
1006
1006
1007
1008
1008
1009
1010
1010

Ozone (du)

288
291
294
297
302
302
303
305
305
306
306
304
301
298
296
297
296
300
309
311
314
323
330
340

Tuesday 16

Waning Crescent 12%

06:16

13:24

08 Bad
09 Bad
10 Bad
11 Bad
12 Bad
13 Bad
14 Good
15 Good
16 Good
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

Sun - Rise: 08:21, Set: 16:03, Transit: 12:12. Moon - Rise: 06:16, Set: 13:24. Civil Dark: 16:44 - 07:40. Nautical Dark: 17:28 - 06:56. Astro Dark: 18:10 - 06:15

Total Clouds (% Sky Obscured)

100
100
100
100
97
64
9
9
9
97
85
71
62
61
63
64
70
85
94
96
98
100
100
100

Low Clouds (% Sky Obscured)

44
45
44
42
44
41
9
9
9
39
67
59
49
48
50
53
42
31
24
39
54
72
84
94

Medium Clouds (% Sky Obscured)

100
100
100
100
83
42
0
0
0
0
8
4
0
0
1
1
21
40
72
75
73
73
80
90

High Clouds (% Sky Obscured)

100
100
100
100
70
35
0
0
0
20
74
71
61
29
18
10
15
24
33
61
82
100
100
100

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
3
4
4
5
5
7
5
4
7
38
23
20
12
3
0
2
5
7
10
13
10
22
43

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
2
1
2
3
4
5
6
6
6
6
11
10
9
8
8
9
10
12
13
16
18
21
22

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

6
6
6
7
6
6
7
8
7
6
4
4
4
4
4
4
4
4
3
3
2
2
2
3

Dew Point (°C)

5
5
6
6
6
6
6
6
6
6
5
5
5
5
5
5
5
6
6
6
6
6
6
6

Relative Humidity (%)

85
84
85
82
81
80
82
84
87
88
90
90
90
88
90
90
91
91
91
91
88
87
85
87

Pressure (mb)

1011
1012
1013
1013
1013
1013
1014
1014
1014
1015
1015
1016
1016
1016
1016
1016
1016
1016
1015
1015
1014
1013
1013
1012

Ozone (du)

348
348
353
349
352
352
352
348
339
332
328
324
320
315
310
304
299
297
295
293
294
294
295
294

Wednesday 17

Waning Crescent 6%

07:27

13:44

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
07 Bad

Sun - Rise: 08:22, Set: 16:03, Transit: 12:12. Moon - Rise: 07:27, Set: 13:44. Civil Dark: 16:44 - 07:41. Nautical Dark: 17:28 - 06:57. Astro Dark: 18:10 - 06:15

Total Clouds (% Sky Obscured)

100
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)

98
99
99
100
100
100
100
99
99
98
97
94
86
72
57
45
57
73
92
67
43
18
17
17

Medium Clouds (% Sky Obscured)

97
98
99
100
93
86
79
80
75
57
50
39
31
46
66
87
88
86
82
71
60
49
52
55

High Clouds (% Sky Obscured)

100
73
43
15
12
14
21
22
22
18
46
73
100
75
50
25
40
50
50
40
35
25
20
20

ISS Passover

Visibility (miles)

8
7
6
5
4
3
3
3
2
1
0
3
6
9
8
7
5
6
7
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

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

Precipitation Probability (%)

58
77
95
95
95
95
95
90
72
67
49
40
44
36
32
40
43
54
65
48
42
60
41
23

Precipitation Amount (mm)

0
0.4
0.9
1.2
0.8
0.8
1.1
0.6
0.4
0.4
0
0
0.2
0
0
0
0
0.3
0.5
0.2
0
0.6
0.2
0

Wind Speed/Direction (mph)

23
25
26
27
28
27
26
25
22
19
16
16
16
15
17
18
20
17
16
15
14
13
12
11

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

87
88
90
91
93
93
95
93
95
96
96
95
91
88
88
88
87
88
88
90
88
87
85
87

Pressure (mb)

1011
1011
1010
1009
1008
1008
1007
1006
1006
1006
1006
1006
1006
1007
1007
1007
1007
1007
1007
1008
1008
1008
1008
1009

Ozone (du)

294
293
291
290
288
288
289
289
291
293
295
296
298
299
303
307
311
309
308
306
305
304
303
298

Thursday 18

Waning Crescent 3%

No Rise

14:13

Sun - Rise: 08:22, Set: 16:03, Transit: 12:13. Moon - Rise: No Rise, Set: 14:13. Civil Dark: 16:44 - 07:42. Nautical Dark: 17:29 - 06:57. Astro Dark: 18:10 - 06:16

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: 12/12/25 08:11:25. Forecast: 12/12/25 to 18/12/25. Timezone: UTC+0.00