Clear Outside v1.0 - International Weather Forecasts For Astronomers

Tuesday 25

Waxing Gibbous 95%

19:33

03:54

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
08 Bad
09 Bad
10 Bad
11 Bad
12 Bad
13 Bad

Sun - Rise: 06:18, Set: 20:19, Transit: 13:18. Moon - Rise: 19:33, Set: 03:54. Civil Dark: 20:56 - 05:42. Nautical Dark: 21:42 - 04:56. Astro Dark: 22:34 - 04:04

Total Clouds (% Sky Obscured)

99
100
100
100
100
100
100
100
100
98
94
98
100
98
96
93
94
93
91
84
93
87
94
100

Low Clouds (% Sky Obscured)

36
51
8
28
44
67
68
62
20
17
19
57
75
83
73
56
90
70
66
83
74
66
66
49

Medium Clouds (% Sky Obscured)

85
100
84
78
87
100
93
59
98
97
94
91
94
93
94
90
90
65
10
2
3
10
6
2

High Clouds (% Sky Obscured)

95
96
100
100
98
73
78
90
96
76
43
90
95
88
72
52
47
43
36
40
60
45
51
100

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
4
4
9
9
7
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
Very Light Rain
Very Light Rain
None
None
None
None
None
None
None
None

Precipitation Probability (%)

95
66
4
8
14
25
16
6
4
3
3
11
13
32
45
52
40
35
32
20
25
9
15
11

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.3
0.3
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

16
15
13
12
9
10
10
11
11
10
12
13
13
11
10
9
9
9
9
9
9
10
10
9

Chance of Frost

Temperature (°C)

21
23
23
24
24
22
21
21
20
19
19
19
18
18
17
17
16
16
17
17
18
20
21
22

Feels Like (°C)

17
19
20
21
21
19
17
16
16
15
15
15
14
15
15
15
15
14
15
16
17
19
21
21

Dew Point (°C)

9
9
10
10
11
9
7
7
9
10
10
10
10
10
12
15
15
15
15
15
16
17
17
16

Relative Humidity (%)

45
40
43
41
44
43
39
38
48
56
57
56
57
60
73
86
90
90
89
88
89
82
75
66

Pressure (mb)

1012
1012
1011
1011
1010
1010
1010
1011
1011
1011
1011
1011
1011
1011
1011
1011
1011
1011
1011
1011
1012
1012
1011
1011

Ozone (du)

324
322
322
323
323
322
322
322
321
318
320
324
324
325
325
325
326
327
328
328
328
328
328
329

Wednesday 26

Waxing Gibbous 99%

19:49

05:12

14 Bad
15 Bad
16 Bad
17 Bad
18 Bad
19 Bad
20 Bad
21 OK
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

Sun - Rise: 06:20, Set: 20:17, Transit: 13:17. Moon - Rise: 19:49, Set: 05:12. Civil Dark: 20:53 - 05:43. Nautical Dark: 21:39 - 04:58. Astro Dark: 22:31 - 04:07

Total Clouds (% Sky Obscured)

85
92
100
100
64
70
50
45
99
100
100
99
100
100
100
100
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

67
76
77
74
64
25
3
0
10
13
14
18
13
7
5
76
91
82
94
92
75
50
64
77

Medium Clouds (% Sky Obscured)

5
8
3
5
3
0
0
5
5
32
85
99
22
98
97
99
100
100
100
100
27
5
3
3

High Clouds (% Sky Obscured)

31
41
72
72
2
64
35
35
97
100
100
96
100
100
100
100
100
100
100
100
93
100
100
88

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
3
6
6
3
9
6
3
3

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

Precipitation Probability (%)

25
27
58
63
54
15
1
0
1
1
0
3
12
27
53
95
95
95
95
89
67
91
95
95

Precipitation Amount (mm)

0
0
0.4
0.3
0
0
0
0
0
0
0
0
0
0
0
0.6
1.8
1.6
2.4
0.3
0
0.9
1.5
1.6

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

23
24
23
23
23
22
20
19
18
18
18
18
18
18
18
18
18
18
18
18
18
19
20
20

Feels Like (°C)

22
23
24
23
23
23
20
19
19
18
18
17
18
17
17
17
17
17
17
17
17
19
20
20

Dew Point (°C)

15
14
15
16
15
16
16
15
16
16
15
15
15
15
16
16
16
17
17
17
17
18
18
18

Relative Humidity (%)

58
55
57
63
63
68
74
80
83
83
81
80
80
82
85
86
89
92
93
95
93
93
84
86

Pressure (mb)

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

Ozone (du)

330
329
327
326
326
323
323
324
323
323
324
324
325
325
325
325
325
324
325
327
332
333
334
334

Thursday 27

Waxing Gibbous 100%

20:02

06:30

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
08 Bad
09 Bad
10 Bad
11 Bad
12 Bad
13 Bad

Sun - Rise: 06:21, Set: 20:15, Transit: 13:17. Moon - Rise: 20:02, Set: 06:30. Civil Dark: 20:51 - 05:45. Nautical Dark: 21:36 - 05:00. Astro Dark: 22:28 - 04:10

Total Clouds (% Sky Obscured)

98
96
99
100
93
90
86
58
72
65
51
61
76
84
97
80
100
98
96
91
95
97
100
86

Low Clouds (% Sky Obscured)

60
50
44
49
40
43
57
55
60
54
36
38
42
35
37
41
40
39
40
40
41
43
48
49

Medium Clouds (% Sky Obscured)

5
11
12
9
12
2
10
4
15
16
26
61
76
83
85
80
80
89
93
80
94
93
98
80

High Clouds (% Sky Obscured)

70
82
96
100
93
90
30
12
25
20
25
20
24
56
88
12
96
74
47
11
33
56
80
57

ISS Passover

Visibility (miles)

2
2
5
4
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

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

Precipitation Probability (%)

95
95
87
50
33
21
9
5
4
5
5
4
6
8
7
24
28
28
28
18
31
28
23
18

Precipitation Amount (mm)

1.9
1.1
0.7
0.2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

19
20
20
19
18
18
17
16
16
16
16
16
16
16
16
16
16
16
16
17
18
18
19
19

Feels Like (°C)

19
19
19
17
17
18
16
15
16
15
15
14
14
15
15
15
14
15
15
16
15
16
17
17

Dew Point (°C)

18
17
17
17
17
16
16
15
15
15
14
14
14
15
15
15
15
15
15
15
15
14
13
13

Relative Humidity (%)

89
85
84
86
90
89
92
92
92
92
92
92
92
93
95
95
93
95
92
88
82
76
69
65

Pressure (mb)

1006
1006
1006
1006
1006
1007
1007
1007
1007
1007
1007
1007
1006
1006
1006
1005
1005
1005
1005
1005
1005
1005
1005
1005

Ozone (du)

335
335
335
336
338
340
342
342
341
341
342
342
342
342
341
341
340
339
341
341
338
335
334
330

Friday 28

Full Moon 99%

20:13

07:48

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
08 Bad
09 Bad
10 Bad
11 Bad
12 Bad
13 Bad

Sun - Rise: 06:23, Set: 20:13, Transit: 13:17. Moon - Rise: 20:13, Set: 07:48. Civil Dark: 20:49 - 05:47. Nautical Dark: 21:34 - 05:02. Astro Dark: 22:24 - 04:12

Total Clouds (% Sky Obscured)

76
63
59
73
89
87
78
79
81
96
100
100
100
100
100
100
100
100
97
96
100
95
80
92

Low Clouds (% Sky Obscured)

49
47
59
70
77
75
74
72
70
68
66
73
79
85
76
68
63
56
47
44
66
79
80
76

Medium Clouds (% Sky Obscured)

76
63
7
21
8
7
18
15
11
12
13
12
82
95
98
99
100
72
5
3
10
9
5
9

High Clouds (% Sky Obscured)

46
2
2
7
25
23
1
0
27
73
100
100
100
90
100
100
35
23
13
0
1
2
3
22

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
7
5
6
9
5
3
4
3
4
1
4
6
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
Very Light Rain
None
None
Light Rain
None
None
Light Rain
Very Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain

Precipitation Probability (%)

17
13
5
4
7
5
29
43
37
34
53
44
48
55
63
95
95
89
73
70
75
78
79
74

Precipitation Amount (mm)

0
0
0
0
0
0
0
0.3
0
0
0.4
0
0
0.4
0.2
0.6
0.8
0.4
0.4
0.4
0.5
0.5
0.6
0.5

Wind Speed/Direction (mph)

10
9
9
8
8
8
9
10
11
10
10
9
13
14
11
8
7
9
11
13
13
12
14
15

Chance of Frost

Temperature (°C)

19
19
19
19
18
18
17
16
16
16
16
16
17
16
16
16
16
16
17
17
17
17
17
18

Feels Like (°C)

17
18
18
19
18
17
16
16
15
16
15
15
14
13
15
15
15
15
14
13
14
14
13
14

Dew Point (°C)

13
13
13
14
14
15
16
16
16
16
16
16
16
15
15
15
15
16
16
16
17
16
16
16

Relative Humidity (%)

67
68
69
71
76
83
93
95
95
95
96
96
95
93
90
93
95
95
95
95
98
95
89
86

Pressure (mb)

1005
1005
1005
1005
1005
1005
1005
1005
1005
1005
1004
1004
1004
1004
1003
1003
1002
1002
1002
1002
1002
1002
1002
1002

Ozone (du)

325
324
321
321
322
320
321
316
312
310
309
306
304
304
307
305
308
314
317
323
326
323
323
323

Saturday 29

Waning Gibbous 96%

20:23

09:08

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
08 Bad
09 Bad
10 Bad
11 Bad
12 Bad
13 Bad

Sun - Rise: 06:25, Set: 20:10, Transit: 13:16. Moon - Rise: 20:23, Set: 09:08. Civil Dark: 20:46 - 05:49. Nautical Dark: 21:31 - 05:04. Astro Dark: 22:21 - 04:15

Total Clouds (% Sky Obscured)

76
93
100
100
100
99
96
96
96
97
98
97
95
86
79
78
79
88
93
96
91
87
84
89

Low Clouds (% Sky Obscured)

51
30
30
34
37
48
53
60
70
80
91
91
88
78
74
71
69
76
81
78
58
56
59
59

Medium Clouds (% Sky Obscured)

0
0
4
5
5
9
9
13
13
18
19
13
11
10
8
7
5
5
7
13
13
10
8
18

High Clouds (% Sky Obscured)

48
75
90
95
95
84
76
63
41
21
0
10
18
24
31
17
20
20
20
20
16
21
27
42

ISS Passover

Visibility (miles)

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

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

Precipitation Probability (%)

59
42
33
41
49
69
61
55
58
71
91
95
95
70
55
50
59
44
39
57
74
95
95
95

Precipitation Amount (mm)

0.2
0
0
0
0
0.5
0.4
0.3
0.2
0.4
0.7
1.2
0.7
0.4
0.2
0.2
0.5
0
0
0.3
0.5
1.2
2.7
1

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

18
19
19
19
18
18
17
17
17
16
16
16
16
16
16
16
16
16
16
17
17
17
18
18

Feels Like (°C)

14
15
14
14
14
14
13
13
13
13
13
13
13
13
13
13
13
14
14
14
15
14
14
14

Dew Point (°C)

15
14
14
13
15
16
16
16
16
15
16
16
16
16
15
15
15
15
15
15
15
15
14
14

Relative Humidity (%)

82
71
71
71
81
86
90
92
92
93
95
95
95
95
95
93
93
93
92
92
90
85
79
75

Pressure (mb)

1002
1002
1002
1002
1002
1002
1003
1003
1004
1004
1004
1004
1004
1005
1005
1005
1005
1005
1005
1005
1005
1005
1004
1004

Ozone (du)

325
324
323
322
321
321
320
320
321
321
321
318
319
319
320
321
322
322
323
324
324
326
328
330

Sunday 30

Waning Gibbous 91%

20:34

10:29

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
08 Bad
09 Bad
10 Bad
11 Bad
12 Bad
13 Bad

Sun - Rise: 06:26, Set: 20:08, Transit: 13:16. Moon - Rise: 20:34, Set: 10:29. Civil Dark: 20:44 - 05:51. Nautical Dark: 21:28 - 05:06. Astro Dark: 22:18 - 04:17

Total Clouds (% Sky Obscured)

92
94
86
77
66
73
79
86
78
70
59
67
74
82
84
86
89
84
82
80
74
67
62
64

Low Clouds (% Sky Obscured)

58
57
50
43
37
45
46
50
43
31
25
37
55
76
84
86
89
84
82
80
74
64
56
57

Medium Clouds (% Sky Obscured)

32
43
39
33
21
25
32
38
39
34
28
33
37
42
54
66
84
64
34
7
8
5
0
8

High Clouds (% Sky Obscured)

56
68
69
58
46
54
73
86
64
36
10
7
4
1
1
1
1
0
0
0
0
1
1
2

ISS Passover

Visibility (miles)

4
4
5
4
4
4
4
4
3
3
4
4
4
3
3
5
7
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
Very Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
None
None
None
None
None
None
None

Precipitation Probability (%)

92
91
91
86
95
78
68
95
91
77
92
77
70
90
76
68
68
49
35
33
20
17
17
10

Precipitation Amount (mm)

0.7
0.7
0.7
0.5
0.7
0.4
0.3
1.4
0.8
0.5
1.2
0.6
0.4
0.9
0.5
0.4
0.4
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

14
15
17
17
17
17
16
16
16
16
17
18
18
19
20
20
20
20
19
19
19
18
17
17

Chance of Frost

Temperature (°C)

19
19
19
18
17
16
15
15
15
15
15
15
15
15
15
15
15
14
15
15
15
15
15
15

Feels Like (°C)

18
18
17
17
17
18
13
12
13
13
13
13
12
12
11
12
11
11
8
8
7
7
7
7

Dew Point (°C)

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

Relative Humidity (%)

73
73
72
77
82
87
87
89
89
89
87
87
90
90
93
90
86
83
79
75
71
69
67
66

Pressure (mb)

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

Ozone (du)

330
330
331
333
335
338
339
340
341
341
340
340
342
344
346
346
346
346
343
340
337
335
334
333

Monday 31

Waning Gibbous 83%

20:46

11:54

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: 06:28, Set: 20:06, Transit: 13:16. Moon - Rise: 20:46, Set: 11:54. Civil Dark: 20:41 - 05:52. Nautical Dark: 21:25 - 05:09. Astro Dark: 22:15 - 04:20

Total Clouds (% Sky Obscured)

68
71
72
69
69
66
66
64
63
63
72
72
69
64
59
53
46

Low Clouds (% Sky Obscured)

58
58
54
48
42
38
34
35
41
43
41
38
29
26
18
12
6

Medium Clouds (% Sky Obscured)

18
27
18
9
0
0
0
0
0
0
0
1
2
2
3
3
3

High Clouds (% Sky Obscured)

3
5
19
34
48
51
51
44
34
27
20
15
10
10
12
25
17

ISS Passover

Visibility (miles)

9
9
9
8
7
6
7
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

Precipitation Type

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

Precipitation Probability (%)

11
21
25
36
49
39
30
24
17
20
24
17
15
16
12
13
10

Precipitation Amount (mm)

0
0
0
0
0.2
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

16
15
14
15
15
16
16
16
16
15
14
14
13
11
10
9
9

Chance of Frost

Temperature (°C)

15
15
15
15
15
15
15
15
15
15
15
15
15
15
14
14
14

Feels Like (°C)

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

Dew Point (°C)

10
10
11
11
12
12
12
12
12
12
12
12
12
12
12
11
11

Relative Humidity (%)

68
70
73
75
78
80
80
80
80
80
82
82
82
83
84
83
84

Pressure (mb)

1012
1012
1013
1013
1013
1013
1014
1014
1015
1015
1015
1016
1016
1016
1016
1016
1017

Ozone (du)

333
334
334
334
334
334
331
327
323
322
320
318
319
321
322
319
316

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

Generated: 25/08/26 14:04:26. Forecast: 25/08/26 to 31/08/26. Timezone: UTC+1.00