Clear Outside v1.0 - International Weather Forecasts For Astronomers

Friday 5

Waning Gibbous 98%

15:54

09:24

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
03 Bad
04 Bad
05 Bad
06 Bad

Sun - Rise: 08:10, Set: 16:04, Transit: 12:07. Moon - Rise: 15:54, Set: 09:24. Civil Dark: 16:44 - 07:29. Nautical Dark: 17:28 - 06:47. Astro Dark: 18:09 - 06:05

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
100
100
100
100
95
95
98
100
95
99
99
100
100
100

Low Clouds (% Sky Obscured)

32
29
40
49
48
64
54
75
86
100
100
65
62
66
64
58
67
72
80
70
99
81
88
96

Medium Clouds (% Sky Obscured)

100
100
100
100
100
100
90
31
100
100
100
99
99
100
58
75
94
99
85
56
56
100
100
100

High Clouds (% Sky Obscured)

100
100
73
100
84
93
51
57
100
100
95
35
100
100
35
22
19
100
65
88
80
88
100
100

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
7
3
4
4
3
5
7
9
6
6
5
7
3
8
4

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

Precipitation Probability (%)

8
14
9
29
40
75
95
95
95
95
95
95
95
95
87
67
60
73
86
76
95
95
95
95

Precipitation Amount (mm)

0
0
0
0
0
0
0.9
0.3
0.8
1
1.4
0.5
1.4
0.9
0.4
0.2
0
0.3
0.5
0.4
0.8
1.2
1.3
1.2

Wind Speed/Direction (mph)

10
12
17
18
21
25
27
31
35
35
27
23
21
20
24
23
20
21
21
23
24
25
27
26

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

90
90
88
81
78
79
84
85
82
85
90
84
87
91
85
85
85
87
91
85
87
91
88
91

Pressure (mb)

1002
1001
1001
1000
998
997
994
991
989
988
987
986
986
986
986
986
986
986
985
985
985
986
986
987

Ozone (du)

315
312
309
303
298
294
293
296
296
297
298
296
294
293
295
294
293
292
292
290
289
286
282
281

Saturday 6

Waning Gibbous 93%

17:06

10:31

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 OK
23 Bad
00 Bad
01 Bad
02 Bad
03 Bad
04 Bad
05 Bad
06 Bad

Sun - Rise: 08:11, Set: 16:03, Transit: 12:07. Moon - Rise: 17:06, Set: 10:31. Civil Dark: 16:44 - 07:30. Nautical Dark: 17:28 - 06:48. Astro Dark: 18:09 - 06:06

Total Clouds (% Sky Obscured)

100
100
100
100
100
95
100
97
87
84
94
94
87
83
55
21
74
100
99
86
99
93
99
100

Low Clouds (% Sky Obscured)

84
77
76
82
83
69
82
70
61
62
58
49
59
69
43
19
61
52
46
69
59
36
74
17

Medium Clouds (% Sky Obscured)

48
90
100
100
91
91
100
89
75
69
88
69
27
8
0
0
8
0
15
9
56
59
59
75

High Clouds (% Sky Obscured)

86
100
100
100
71
0
1
40
40
1
0
0
0
3
41
2
8
100
92
61
97
82
97
100

ISS Passover

Visibility (miles)

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

Precipitation Type

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
None
None
None
None

Precipitation Probability (%)

95
95
95
95
95
93
81
95
95
62
45
31
22
21
17
13
14
1
13
10
5
2
16
25

Precipitation Amount (mm)

1.5
1.3
1.1
0.9
0.9
0.6
0.5
0.9
1.4
0.3
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

24
24
24
25
25
27
26
24
26
26
26
25
23
21
21
18
16
14
10
9
6
6
7
7

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

88
88
90
88
85
84
84
90
88
91
87
85
87
87
87
87
88
88
91
91
93
93
91
93

Pressure (mb)

987
988
989
989
990
991
992
993
994
995
996
997
998
999
1000
1000
1001
1001
1001
1002
1001
1001
1000
1000

Ozone (du)

281
281
281
281
280
281
284
283
282
289
294
294
295
294
293
292
295
290
283
283
284
283
284
285

Sunday 7

Waning Gibbous 86%

18:34

11:16

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 OK
22 OK
23 OK
00 Bad
01 Bad
02 Bad
03 Bad
04 Bad
05 Bad
06 Bad

Sun - Rise: 08:12, Set: 16:03, Transit: 12:08. Moon - Rise: 18:34, Set: 11:16. Civil Dark: 16:44 - 07:32. Nautical Dark: 17:27 - 06:49. Astro Dark: 18:09 - 06:07

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
100
97
100
53
19
5
6
25
99
98
99
98
97
96

Low Clouds (% Sky Obscured)

97
52
100
88
97
100
100
88
78
72
20
49
49
53
19
5
6
25
54
62
62
68
76
77

Medium Clouds (% Sky Obscured)

94
99
100
100
100
100
100
100
100
62
93
78
98
16
16
5
6
25
97
98
92
83
75
76

High Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
43
0
0
2
0
2
6
25
68
91
61
32
5
0

ISS Passover

Visibility (miles)

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

Fog (%)

12
17
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
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Very Light Rain
None
None
None
None
None
None
None
None
None
Light Rain
Very Light Rain
Very Light Rain
Very Light Rain
Very Light Rain

Precipitation Probability (%)

38
50
72
95
95
95
95
95
95
73
39
24
29
15
13
17
24
23
39
63
60
65
68
67

Precipitation Amount (mm)

0
0
0.4
1.3
1.5
1.5
2.2
1.9
1.1
0.3
0
0
0
0
0
0
0
0
0
0.4
0.2
0.3
0.3
0.3

Wind Speed/Direction (mph)

7
9
10
11
12
11
12
12
11
14
15
15
15
14
14
15
14
12
13
14
15
17
18
20

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

7
7
8
7
8
9
10
10
10
8
5
6
3
3
5
6
6
6
7
5
6
6
6
6

Dew Point (°C)

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

Relative Humidity (%)

91
91
87
88
88
93
95
95
96
98
96
95
88
88
87
85
85
90
93
95
93
95
93
88

Pressure (mb)

999
998
997
996
995
994
994
993
993
993
994
996
998
999
1000
1000
1001
1001
1001
1001
1001
1002
1002
1002

Ozone (du)

286
287
289
290
296
297
294
295
298
300
304
312
316
320
320
322
319
315
314
318
327
335
338
343

Monday 8

Waning Gibbous 77%

20:04

11:45

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
03 Bad
04 Bad
05 Bad
06 Bad

Sun - Rise: 08:13, Set: 16:03, Transit: 12:08. Moon - Rise: 20:04, Set: 11:45. Civil Dark: 16:43 - 07:33. Nautical Dark: 17:27 - 06:50. Astro Dark: 18:09 - 06:08

Total Clouds (% Sky Obscured)

97
97
98
99
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

77
69
73
72
58
46
41
51
62
66
67
65
64
62
56
76
84
79
74
72
78
85
93
93

Medium Clouds (% Sky Obscured)

67
24
67
63
67
76
86
100
100
100
98
97
92
100
100
100
97
100
100
100
100
100
100
100

High Clouds (% Sky Obscured)

3
20
30
51
85
75
40
55
57
85
100
100
100
100
100
100
100
100
100
100
100
100
100
100

ISS Passover

Visibility (miles)

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

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

Precipitation Probability (%)

63
73
55
49
52
50
61
75
79
87
84
59
44
46
41
59
71
84
94
95
95
95
95
95

Precipitation Amount (mm)

0.3
0.7
0.2
0
0.4
0
0.3
0.5
0.5
0.7
0.5
0
0
0
0
0.3
0.4
0.5
0.6
0.7
1.4
2
2.1
2

Wind Speed/Direction (mph)

18
17
15
15
16
15
15
15
15
14
12
11
10
9
9
9
9
10
10
10
9
12
17
23

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

5
6
6
7
8
8
8
9
8
8
9
9
9
9
9
9
9
9
9
10
10
10
10
11

Dew Point (°C)

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

Relative Humidity (%)

87
88
91
90
90
87
87
88
84
91
96
93
90
90
87
90
90
87
87
90
93
96
96
98

Pressure (mb)

1002
1003
1004
1005
1005
1005
1005
1005
1006
1006
1006
1006
1006
1006
1005
1005
1004
1003
1002
1000
999
998
997
996

Ozone (du)

348
351
351
350
347
346
349
349
348
342
340
338
335
332
328
323
315
309
305
302
302
300
298
297

Tuesday 9

Waning Gibbous 67%

21:30

12:04

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
03 Bad
04 Bad
05 Bad
06 Bad

Sun - Rise: 08:15, Set: 16:02, Transit: 12:08. Moon - Rise: 21:30, Set: 12:04. Civil Dark: 16:43 - 07:34. Nautical Dark: 17:27 - 06:51. Astro Dark: 18:09 - 06:09

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
100
100
100
100
97
95
95
95
99
99
99
99
99
99

Low Clouds (% Sky Obscured)

93
93
95
98
100
100
99
99
94
89
85
96
92
89
86
82
79
77
77
76
80
81
84
87

Medium Clouds (% Sky Obscured)

100
100
100
100
99
96
91
86
86
88
90
100
100
100
94
87
79
82
83
92
81
68
54
59

High Clouds (% Sky Obscured)

100
100
100
100
100
78
57
39
32
25
23
74
74
63
30
19
10
11
18
25
34
38
37
26

ISS Passover

Visibility (miles)

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

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

Moderate Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Very Light Rain
None
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 (%)

95
95
95
95
95
95
95
95
76
59
72
95
95
95
87
88
87
88
95
95
95
95
95
95

Precipitation Amount (mm)

2.6
1.9
1.4
1.2
1.1
1
1.4
0.9
0.3
0
0.4
0.7
1
0.8
0.5
0.6
0.5
0.5
1.2
1.8
1.1
0.8
0.9
1

Wind Speed/Direction (mph)

23
25
24
25
26
27
28
27
28
28
27
26
26
26
27
25
23
21
19
17
15
13
13
15

Chance of Frost

Temperature (°C)

13
14
13
14
14
14
14
14
14
13
13
13
13
12
12
12
12
12
11
11
11
11
10
9

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

95
93
95
96
95
95
95
96
95
93
93
93
92
93
95
93
95
96
96
96
96
96
96
98

Pressure (mb)

995
994
994
994
993
993
993
992
992
993
994
994
991
993
994
995
996
997
998
998
999
999
999
999

Ozone (du)

295
294
289
289
288
288
286
286
285
282
282
281
282
282
282
284
286
288
288
288
288
290
293
296

Wednesday 10

Waning Gibbous 57%

22:51

12:18

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 Bad
01 Bad
02 Bad
03 Bad
04 Bad
05 Bad
06 Bad

Sun - Rise: 08:16, Set: 16:02, Transit: 12:09. Moon - Rise: 22:51, Set: 12:18. Civil Dark: 16:43 - 07:35. Nautical Dark: 17:27 - 06:52. Astro Dark: 18:09 - 06:10

Total Clouds (% Sky Obscured)

99
96
96
95
95
76
58
40
32
24
20
33
46
60
49
38
27
34
42
50
54
59
64
74

Low Clouds (% Sky Obscured)

93
93
81
70
59
47
33
20
15
16
17
30
44
55
45
35
26
33
40
48
51
54
57
51

Medium Clouds (% Sky Obscured)

60
61
73
83
95
76
58
40
32
24
14
11
7
4
8
10
18
25
28
26
29
32
35
40

High Clouds (% Sky Obscured)

11
2
1
0
0
0
0
0
0
0
0
0
0
0
0
0
1
7
12
17
35
54
64
74

ISS Passover

Visibility (miles)

2
3
5
6
8
9
9
9
9
9
8
7
8
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
Very Light Rain
Light Rain
Light Rain
Very Light Rain
Light Rain
Light Rain
Light Rain
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

95
95
95
79
70
63
66
71
61
63
75
62
45
26
17
14
8
7
6
4
6
6
3
5

Precipitation Amount (mm)

0.8
0.8
0.7
0.5
0.5
0.3
0.4
0.6
0.3
0.4
0.7
0.4
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

16
17
17
17
18
20
18
17
16
15
15
15
14
12
12
11
11
11
12
13
14
15
15
16

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

96
95
90
90
88
85
84
84
84
84
87
88
90
91
91
91
91
91
90
88
87
87
88
88

Pressure (mb)

1000
1002
1003
1004
1005
1006
1006
1007
1008
1009
1010
1010
1011
1012
1012
1013
1013
1013
1013
1013
1013
1012
1012
1011

Ozone (du)

301
305
310
314
319
323
322
320
319
317
315
314
313
312
311
309
307
306
305
304
303
303
304
304

Thursday 11

Third Quarter 46%

00:08

12:28

Sun - Rise: 08:17, Set: 16:02, Transit: 12:09. Moon - Rise: 00:08, Set: 12:28. Civil Dark: 16:43 - 07:36. Nautical Dark: 17:27 - 06:52. Astro Dark: 18:09 - 06:11

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: 05/12/25 07:09:31. Forecast: 05/12/25 to 11/12/25. Timezone: UTC+0.00