Clear Outside v1.0 - International Weather Forecasts For Astronomers

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)

99
96
93
82
70
76
69
79
84
82
85
97
100
100
100
100
100
100
100
100
100
99
97
97

Low Clouds (% Sky Obscured)

85
84
72
62
70
67
63
69
73
66
73
75
94
94
94
94
94
84
87
93
95
94
87
75

Medium Clouds (% Sky Obscured)

92
90
44
1
1
9
8
16
7
6
12
11
11
77
25
99
100
100
100
100
65
12
30
33

High Clouds (% Sky Obscured)

27
25
21
0
0
0
0
2
16
55
19
69
100
100
100
100
100
100
100
38
100
21
21
55

ISS Passover

Visibility (miles)

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

Fog (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
9
10
6
0
0
0
0
0
0
0

Precipitation Type

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

Precipitation Probability (%)

42
58
35
33
15
16
13
28
38
42
41
32
23
11
12
37
84
95
95
95
95
85
73
78

Precipitation Amount (mm)

0.4
0.3
0.3
0
0
0
0
0
0.3
0.3
0.3
0
0
0
0
0
0.5
1.2
1.2
1.1
1.1
0.2
0.4
0.7

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

95
96
96
93
92
93
95
96
95
95
95
96
96
96
93
93
93
93
95
95
90
90
92
86

Pressure (mb)

1006
1006
1006
1006
1006
1006
1006
1006
1006
1006
1006
1006
1005
1005
1005
1004
1003
1003
1003
1002
1001
1001
1001
1000

Ozone (du)

333
330
327
327
328
328
325
320
319
317
315
312
311
308
307
307
305
305
305
308
311
315
319
319

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)

97
90
86
97
93
93
89
77
91
91
86
88
90
91
79
80
79
68
43
52
94
100
100
100

Low Clouds (% Sky Obscured)

60
53
45
41
74
84
81
63
77
78
82
86
89
90
73
69
73
62
30
19
26
29
55
69

Medium Clouds (% Sky Obscured)

69
52
30
92
93
74
33
10
10
53
7
7
5
5
5
8
9
4
4
9
8
14
77
100

High Clouds (% Sky Obscured)

96
48
74
6
8
0
0
0
0
0
0
0
0
0
0
0
0
0
0
52
94
100
97
100

ISS Passover

Visibility (miles)

7
3
9
9
8
9
8
7
7
4
0
4
2
4
9
9
9
9
7
9
8
8
3
4

Fog (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
2
16
27
33
30
9
0
0
0
0

Precipitation Type

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

Precipitation Probability (%)

71
67
76
71
47
33
29
22
37
47
40
34
36
37
33
34
29
19
16
36
68
91
95
95

Precipitation Amount (mm)

0.5
0.4
0.6
0.3
0
0
0
0
0
0.4
0.3
0
0.2
0.3
0.2
0.2
0
0
0
0
0.4
0.8
1.4
1

Wind Speed/Direction (mph)

6
6
5
5
7
8
10
11
9
9
10
9
8
8
8
8
7
7
7
9
11
12
14
15

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

16
16
15
15
15
16
15
15
15
16
16
16
15
15
15
15
14
15
15
15
15
14
15
15

Relative Humidity (%)

82
81
77
76
83
90
93
93
95
95
98
96
95
95
93
95
95
95
93
89
82
77
77
80

Pressure (mb)

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

Ozone (du)

319
321
319
314
313
314
315
317
318
321
322
323
322
322
324
324
323
323
322
321
320
319
319
322

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)

100
100
100
100
100
74
100
99
100
100
99
98
98
77
74
72
83
87
92
95
95
96
96
97

Low Clouds (% Sky Obscured)

67
64
38
46
60
62
55
53
74
75
70
70
83
60
49
58
80
84
83
85
84
84
83
77

Medium Clouds (% Sky Obscured)

100
100
100
63
15
12
12
19
89
97
56
12
5
5
7
10
8
8
10
12
6
4
2
4

High Clouds (% Sky Obscured)

100
100
100
100
100
3
100
97
100
100
98
95
86
11
0
0
0
0
0
0
21
40
79
85

ISS Passover

Visibility (miles)

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

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

Precipitation Probability (%)

95
95
81
79
58
89
95
95
95
84
74
66
68
50
35
41
41
39
40
45
45
40
40
48

Precipitation Amount (mm)

2.3
1.5
0.2
0.5
0.3
0.9
1
1
1
0.7
0.7
0.6
0.7
0.5
0
0.3
0.2
0.2
0
0.2
0
0
0
0.3

Wind Speed/Direction (mph)

15
14
15
17
14
13
12
12
10
10
11
9
10
11
11
12
15
14
16
17
19
18
18
17

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

15
14
13
12
14
13
13
13
13
13
13
13
13
13
14
14
12
13
12
12
12
13
13
13

Dew Point (°C)

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

Relative Humidity (%)

80
95
89
83
85
86
92
92
93
92
92
92
93
92
90
90
92
95
93
90
89
87
86
87

Pressure (mb)

1005
1005
1004
1004
1003
1003
1003
1003
1003
1003
1003
1003
1003
1004
1004
1005
1006
1006
1008
1009
1010
1011
1012
1013

Ozone (du)

324
324
327
327
327
329
333
334
335
338
341
341
339
339
338
337
336
336
336
332
328
325
323
322

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
07 Bad
08 Bad
09 Bad
10 Bad
11 Bad
12 Bad
13 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)

99
100
88
87
80
79
95
95
92
89
86
87
89
92
87
84
86
90
93
95
68
52
88
90

Low Clouds (% Sky Obscured)

70
65
56
55
53
56
59
62
63
64
64
65
65
65
63
61
58
56
51
44
47
40
42
45

Medium Clouds (% Sky Obscured)

6
8
8
8
8
8
8
16
11
10
46
87
89
92
87
84
86
90
93
95
20
7
11
20

High Clouds (% Sky Obscured)

93
77
51
38
6
8
25
25
27
25
32
34
37
45
55
55
65
73
77
31
23
18
45
60

ISS Passover

Visibility (miles)

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

Precipitation Probability (%)

40
40
34
29
37
30
37
53
46
38
46
37
19
20
19
12
17
16
9
15
12
7
10
9

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

16
15
14
12
11
10
11
10
11
10
10
9
9
7
7
7
7
7
8
9
10
13
13
14

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

13
14
14
16
16
16
14
12
12
13
13
13
13
13
14
13
13
13
14
15
15
16
16
15

Dew Point (°C)

14
14
14
13
13
13
13
12
13
13
13
13
13
13
12
12
12
13
13
14
14
13
12
13

Relative Humidity (%)

89
86
87
82
82
83
89
89
92
90
90
90
89
87
84
86
86
90
90
90
85
77
71
73

Pressure (mb)

1014
1014
1015
1015
1015
1016
1016
1017
1017
1017
1017
1017
1017
1017
1017
1017
1017
1018
1018
1018
1018
1018
1018
1018

Ozone (du)

322
320
317
317
316
316
316
316
316
316
318
319
319
319
320
320
321
324
325
325
324
325
326
327

Tuesday 1

Waning Gibbous 74%

21:02

13:21

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: 06:30, Set: 20:03, Transit: 13:15. Moon - Rise: 21:02, Set: 13:21. Civil Dark: 20:39 - 05:54. Nautical Dark: 21:23 - 05:11. Astro Dark: 22:12 - 04:22

Total Clouds (% Sky Obscured)

68
78
76
90
100
100
98
100
100
100
100
100
100
100
99
98
94
91
90
91
91
91
92
81

Low Clouds (% Sky Obscured)

51
49
53
54
55
59
59
61
71
81
89
90
78
51
32
20
7
11
17
31
59
71
75
62

Medium Clouds (% Sky Obscured)

10
31
9
10
93
22
18
22
15
20
20
15
15
15
38
62
86
69
48
28
46
63
80
80

High Clouds (% Sky Obscured)

52
76
76
90
98
95
98
95
98
100
100
77
57
44
51
76
72
75
77
80
85
80
75
75

ISS Passover

Visibility (miles)

9
9
9
9
9
6
6
4
5
6
8
6
6
7
7
8
9
9
9
9
9
8
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
None
None
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
None
None
None
None
None
None

Precipitation Probability (%)

5
11
14
26
41
73
86
83
80
74
93
95
95
95
95
95
91
68
38
12
20
30
42
44

Precipitation Amount (mm)

0
0
0
0
0
0.5
0.8
0.8
0.7
0.5
0.7
2
1.8
1.6
1
0.9
0.8
0.4
0
0
0
0
0
0

Wind Speed/Direction (mph)

14
15
16
16
16
16
16
16
15
15
13
11
11
11
11
10
8
8
10
10
11
12
14
15

Chance of Frost

Temperature (°C)

18
18
18
18
18
17
17
16
16
16
17
16
17
16
17
16
16
16
16
16
16
17
17
17

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

74
73
74
77
81
88
93
95
93
90
92
93
93
93
92
92
89
89
86
86
86
85
86
88

Pressure (mb)

1018
1018
1018
1017
1017
1017
1017
1017
1017
1016
1016
1015
1015
1014
1014
1014
1014
1014
1014
1015
1015
1015
1015
1015

Ozone (du)

328
328
327
326
326
328
327
327
326
326
324
323
323
323
323
322
320
319
318
317
316
315
314
313

Wednesday 2

Waning Gibbous 63%

21:23

No Set

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: 06:31, Set: 20:01, Transit: 13:15. Moon - Rise: 21:23, Set: No Set. Civil Dark: 20:37 - 05:56. Nautical Dark: 21:20 - 05:13. Astro Dark: 22:08 - 04:25

Total Clouds (% Sky Obscured)

71
60
55
47
49
65
78
92
95
97
100
97
95
92
90
90
90
89
89
91
94
95
95
92

Low Clouds (% Sky Obscured)

49
39
40
37
39
44
56
57
70
83
89
95
95
92
90
90
88
89
89
91
94
95
95
92

Medium Clouds (% Sky Obscured)

71
60
55
47
49
50
59
69
71
68
62
56
48
39
47
57
68
62
53
46
32
24
19
21

High Clouds (% Sky Obscured)

71
60
55
35
40
25
10
10
8
9
11
14
27
39
44
49
40
37
31
27
34
35
35
27

ISS Passover

Visibility (miles)

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

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

Precipitation Probability (%)

53
64
55
58
71
61
49
45
42
39
45
62
88
95
86
83
84
63
44
40
30
27
37
37

Precipitation Amount (mm)

0.2
0.4
0.2
0.2
0.5
0.3
0
0
0
0
0.2
0.4
0.8
1.1
0.6
0.7
0.8
0.4
0
0.2
0
0
0
0

Wind Speed/Direction (mph)

15
15
15
15
16
17
17
17
18
18
19
19
18
17
16
16
17
18
18
19
20
22
23
25

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

89
90
93
93
95
95
96
96
96
96
98
98
96
96
96
95
95
93
92
90
87
88
85
85

Pressure (mb)

1015
1015
1015
1014
1014
1014
1014
1014
1013
1013
1013
1013
1013
1013
1013
1013
1013
1013
1013
1014
1014
1014
1014
1015

Ozone (du)

310
307
305
303
301
300
299
298
296
295
294
292
292
292
292
291
290
289
288
288
288
288
288
288

Thursday 3

Waning Gibbous 51%

21:55

14:49

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: 06:33, Set: 19:59, Transit: 13:15. Moon - Rise: 21:55, Set: 14:49. Civil Dark: 20:34 - 05:58. Nautical Dark: 21:17 - 05:15. Astro Dark: 22:05 - 04:27

Total Clouds (% Sky Obscured)

90
87
82
80
76
80
83
87
84
84
84
84
82
79
86
93
97

Low Clouds (% Sky Obscured)

88
84
78
76
76
77
80
80
72
64
61
62
79
79
72
48
24

Medium Clouds (% Sky Obscured)

24
25
40
54
69
66
63
53
50
52
63
66
64
59
48
34
16

High Clouds (% Sky Obscured)

25
32
31
27
23
16
11
15
17
20
21
23
26
28
23
32
36

ISS Passover

Visibility (miles)

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

Fog (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Type

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

Precipitation Probability (%)

44
46
26
27
30
33
41
50
52
58
68
55
40
23
18
11
0

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

25
26
26
25
23
23
22
21
21
14
9
5
5
6
8
7
8

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

17
17
18
18
18
18
17
17
17
16
16
15
14
14
13
13
12

Relative Humidity (%)

88
92
96
96
96
98
98
98
98
98
98
96
93
92
89
90
89

Pressure (mb)

1015
1015
1015
1016
1017
1017
1017
1018
1018
1019
1019
1019
1020
1020
1020
1020
1021

Ozone (du)

287
287
287
286
286
285
285
286
286
287
289
290
291
293
294
296
299

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

Generated: 28/08/26 14:43:49. Forecast: 28/08/26 to 03/09/26. Timezone: UTC+1.00