Clear Outside v1.0 - International Weather Forecasts For Astronomers

Monday 24

Waxing Gibbous 90%

19:06

02:43

05 OK
06 Bad
07 Bad
08 Bad
09 Bad
10 Bad
11 OK
12 Bad
13 OK
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

Sun - Rise: 06:17, Set: 20:20, Transit: 13:18. Moon - Rise: 19:06, Set: 02:43. Civil Dark: 20:56 - 05:41. Nautical Dark: 21:41 - 04:58. Astro Dark: 22:32 - 04:07

Total Clouds (% Sky Obscured)

23
50
53
86
100
54
40
48
41
65
88
47
71
98
91
93
100
95
100
97
81
88
82
87

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
10
0
10
12
4
5
32
41
30
13
0
0
1
5
0
0
4

Medium Clouds (% Sky Obscured)

4
9
9
11
58
31
20
10
10
9
8
8
3
3
2
7
98
29
20
12
19
11
8
12

High Clouds (% Sky Obscured)

23
50
53
79
98
23
9
22
15
32
76
28
45
95
79
77
100
83
100
89
43
46
48
32

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

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)

6
6
6
8
12
14
15
15
14
14
14
13
13
12
10
10
9
9
9
12
12
11
9
9

Chance of Frost

Temperature (°C)

12
11
11
14
17
19
20
21
22
23
23
24
24
23
23
21
19
18
18
17
17
16
15
15

Feels Like (°C)

9
9
9
12
13
15
15
18
18
19
20
20
21
21
20
19
16
15
14
13
12
12
11
12

Dew Point (°C)

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

Relative Humidity (%)

72
72
72
64
61
56
49
43
37
33
31
31
31
32
36
43
48
52
51
54
57
60
67
73

Pressure (mb)

1021
1021
1021
1021
1020
1020
1020
1019
1018
1017
1017
1016
1015
1014
1013
1013
1014
1014
1014
1014
1014
1013
1013
1013

Ozone (du)

339
337
338
340
341
343
344
342
342
338
335
330
327
327
328
329
329
329
329
329
329
328
327
326

Tuesday 25

Waxing Gibbous 95%

19:29

03:58

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
01 Bad
02 Bad
03 Bad
04 Bad

Sun - Rise: 06:18, Set: 20:18, Transit: 13:18. Moon - Rise: 19:29, Set: 03:58. Civil Dark: 20:54 - 05:43. Nautical Dark: 21:38 - N/A. Astro Dark: 22:29 - 04:10

Total Clouds (% Sky Obscured)

83
80
88
68
70
89
95
93
99
100
100
100
100
100
100
100
100
100
100
100
100
100
100
97

Low Clouds (% Sky Obscured)

0
0
0
0
0
23
14
7
3
0
0
0
5
10
37
20
58
70
24
15
17
49
44
44

Medium Clouds (% Sky Obscured)

39
80
88
68
70
89
95
93
75
76
100
100
100
30
100
100
100
100
100
99
8
10
15
9

High Clouds (% Sky Obscured)

26
36
44
7
5
7
5
45
51
86
92
100
100
100
100
100
100
100
99
82
82
80
80
0

ISS Passover

Visibility (miles)

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

Precipitation Probability (%)

0
0
0
0
0
0
0
0
0
1
18
27
26
37
38
37
32
51
58
56
36
31
26
18

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

14
14
14
16
18
19
20
21
22
24
25
25
24
23
22
20
19
19
18
18
17
17
17
17

Feels Like (°C)

12
12
12
13
14
16
17
17
19
21
21
22
22
21
20
18
18
18
17
16
16
16
16
15

Dew Point (°C)

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

Relative Humidity (%)

75
78
78
68
62
55
52
52
46
39
37
37
41
43
51
64
68
66
67
68
71
74
74
73

Pressure (mb)

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

Ozone (du)

325
324
325
325
324
325
323
324
324
323
321
318
317
318
318
319
322
323
324
326
327
328
328
328

Wednesday 26

Waxing Gibbous 99%

19:47

No Set

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

Sun - Rise: 06:20, Set: 20:16, Transit: 13:18. Moon - Rise: 19:47, Set: No Set. Civil Dark: 20:51 - 05:44. Nautical Dark: 21:36 - 05:00. Astro Dark: 22:26 - 04:12

Total Clouds (% Sky Obscured)

91
93
96
100
95
91
90
45
73
58
43
39
51
70
87
91
100
90
97
100
100
100
100
90

Low Clouds (% Sky Obscured)

55
76
91
96
85
82
83
38
59
51
35
27
39
54
37
21
0
0
0
42
52
64
77
79

Medium Clouds (% Sky Obscured)

9
4
4
5
4
4
3
2
2
4
1
1
1
2
8
9
2
90
93
98
100
72
5
0

High Clouds (% Sky Obscured)

1
1
0
8
10
2
2
14
15
1
3
20
8
21
35
84
100
80
94
100
100
93
100
71

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
3
3
8
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
Light Rain
Light Rain
Light Rain
Very Light Rain
Very Light Rain

Precipitation Probability (%)

14
7
4
1
0
1
5
11
14
14
10
9
6
4
3
4
0
9
36
90
95
95
74
63

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.8
1.5
1
0.3
0.3

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

15
16
15
16
18
17
18
19
20
21
24
22
22
23
21
20
18
17
17
16
16
17
17
16

Dew Point (°C)

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

Relative Humidity (%)

74
83
85
81
78
76
76
71
66
61
56
57
58
57
59
67
73
82
82
85
89
95
95
93

Pressure (mb)

1009
1009
1009
1009
1009
1010
1009
1009
1009
1009
1008
1008
1007
1007
1007
1008
1007
1007
1007
1007
1007
1006
1006
1005

Ozone (du)

327
328
328
329
330
331
331
331
332
331
328
326
325
325
326
326
326
326
329
328
333
336
336
341

Thursday 27

Waxing Gibbous 100%

20:00

05:15

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
01 Bad
02 Bad
03 Bad
04 Bad

Sun - Rise: 06:22, Set: 20:14, Transit: 13:18. Moon - Rise: 20:00, Set: 05:15. Civil Dark: 20:49 - 05:46. Nautical Dark: 21:33 - 05:02. Astro Dark: 22:23 - 04:15

Total Clouds (% Sky Obscured)

90
85
86
96
100
100
100
100
91
83
74
81
73
77
73
73
88
95
98
99
100
100
100
100

Low Clouds (% Sky Obscured)

82
85
84
83
79
72
63
46
42
39
36
38
38
38
38
38
38
41
43
48
45
42
47
51

Medium Clouds (% Sky Obscured)

0
3
2
3
2
2
3
9
4
3
2
40
2
1
4
7
9
5
2
2
3
4
5
0

High Clouds (% Sky Obscured)

65
70
76
92
100
100
100
100
80
67
35
53
52
71
63
57
70
83
92
98
98
99
100
100

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
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

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

Precipitation Probability (%)

65
73
69
62
48
47
43
37
28
35
35
32
41
40
29
45
39
35
35
30
29
33
47
31

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

9
9
7
7
9
10
11
11
11
10
9
8
7
7
7
6
4
4
3
3
3
3
4
3

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

93
92
92
90
86
81
77
72
69
67
66
63
62
64
70
87
89
87
87
89
89
89
89
89

Pressure (mb)

1005
1005
1005
1006
1006
1006
1006
1006
1006
1006
1006
1006
1006
1006
1006
1006
1006
1006
1006
1006
1006
1006
1006
1006

Ozone (du)

344
343
342
341
341
342
342
342
343
344
344
344
345
346
345
342
340
339
338
339
339
340
340
340

Friday 28

Full Moon 99%

20:12

06:32

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
01 Bad
02 Bad
03 Bad
04 Bad

Sun - Rise: 06:23, Set: 20:11, Transit: 13:17. Moon - Rise: 20:12, Set: 06:32. Civil Dark: 20:47 - 05:48. Nautical Dark: 21:30 - 05:04. Astro Dark: 22:20 - 04:17

Total Clouds (% Sky Obscured)

100
94
100
99
97
98
91
91
74
58
40
45
50
49
73
68
63
69
74
78
82
85
88
83

Low Clouds (% Sky Obscured)

59
67
69
70
68
70
68
70
58
47
40
34
26
19
61
46
31
28
23
22
18
15
13
14

Medium Clouds (% Sky Obscured)

8
8
5
5
5
5
5
5
3
2
0
0
1
31
41
52
62
44
23
2
27
50
69
63

High Clouds (% Sky Obscured)

100
86
79
60
33
54
47
73
48
25
0
7
26
19
36
19
2
26
49
72
77
83
88
63

ISS Passover

Visibility (miles)

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

Precipitation Probability (%)

31
43
49
55
59
61
66
71
55
40
24
14
5
0
16
16
17
22
23
32
33
36
39
38

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

4
4
4
4
4
7
9
11
12
11
13
15
13
11
10
9
7
6
6
6
6
5
4
3

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

89
90
90
87
81
72
65
62
64
63
63
65
65
68
72
78
82
89
90
90
90
90
90
90

Pressure (mb)

1006
1005
1005
1006
1007
1007
1007
1007
1007
1008
1008
1008
1008
1008
1009
1009
1009
1010
1010
1010
1010
1010
1010
1010

Ozone (du)

341
342
342
341
341
341
341
341
340
340
341
342
339
335
333
330
326
323
321
319
317
316
315
313

Saturday 29

Waning Gibbous 96%

20:24

07:49

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
01 Bad
02 Bad
03 Bad
04 Bad

Sun - Rise: 06:25, Set: 20:09, Transit: 13:17. Moon - Rise: 20:24, Set: 07:49. Civil Dark: 20:44 - 05:50. Nautical Dark: 21:28 - 05:06. Astro Dark: 22:16 - 04:20

Total Clouds (% Sky Obscured)

81
81
78
73
67
78
88
100
100
100
100
99
97
97
87
78
71
68
65
62
57
58
59
55

Low Clouds (% Sky Obscured)

14
15
20
31
43
46
48
47
59
71
83
81
78
76
62
50
36
33
27
24
25
21
18
13

Medium Clouds (% Sky Obscured)

57
50
38
24
10
36
61
87
92
96
100
87
74
59
53
48
42
29
17
5
8
9
9
6

High Clouds (% Sky Obscured)

40
17
26
34
44
62
81
100
100
100
100
84
73
66
54
34
11
6
3
0
0
0
0
0

ISS Passover

Visibility (miles)

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

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

Precipitation Probability (%)

33
21
22
17
11
28
46
62
84
95
95
95
95
95
95
95
81
62
51
49
51
57
64
74

Precipitation Amount (mm)

0
0
0
0
0
0
0
0.3
0.5
0.8
1.2
1.4
1.4
1.2
1.1
0.8
0.5
0.3
0.2
0.3
0.3
0.3
0.4
0.5

Wind Speed/Direction (mph)

3
4
4
6
8
10
11
12
13
14
15
16
16
18
19
19
19
20
18
17
16
16
16
17

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

90
90
90
86
82
77
77
74
74
79
86
93
92
90
90
90
90
89
90
90
92
92
92
92

Pressure (mb)

1010
1010
1010
1010
1010
1010
1010
1010
1010
1009
1008
1008
1007
1006
1005
1005
1005
1005
1005
1005
1005
1005
1004
1004

Ozone (du)

312
311
309
307
304
302
300
298
297
298
300
302
309
315
322
318
313
309
309
309
309
309
310
311

Sunday 30

Waning Gibbous 91%

20:36

09:07

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: 06:26, Set: 20:07, Transit: 13:17. Moon - Rise: 20:36, Set: 09:07. Civil Dark: 20:42 - 05:51. Nautical Dark: 21:25 - 05:08. Astro Dark: 22:13 - 04:22

Total Clouds (% Sky Obscured)

51
51
52
52
53
50
55
56
71
86
91
85
79
72
78
84
91
94
96
98

Low Clouds (% Sky Obscured)

13
12
12
17
22
24
22
17
17
14
15
11
11
11
12
13
13
13
13
12

Medium Clouds (% Sky Obscured)

5
5
4
4
2
2
2
3
4
4
10
22
38
55
45
33
22
16
10
5

High Clouds (% Sky Obscured)

0
0
9
17
24
43
55
56
71
85
85
53
25
0
10
17
20
20
15
20

ISS Passover

Visibility (miles)

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

Fog (%)

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

Precipitation Probability (%)

85
95
91
88
84
89
95
95
95
94
93
84
75
65
64
62
55
67
79
88

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

17
17
18
19
19
20
20
21
22
23
24
25
25
24
23
22
21
19
19
19

Chance of Frost

Temperature (°C)

16
16
16
16
17
17
17
17
17
17
17
17
17
16
16
16
15
15
15
15

Feels Like (°C)

15
15
15
14
15
14
14
14
15
15
14
13
13
12
13
11
11
11
11
11

Dew Point (°C)

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

Relative Humidity (%)

90
89
89
87
85
83
79
77
73
76
77
79
79
79
81
80
80
80
82
84

Pressure (mb)

1003
1003
1003
1003
1003
1003
1003
1003
1003
1003
1003
1003
1004
1004
1004
1004
1005
1005
1005
1005

Ozone (du)

311
312
313
316
318
321
322
323
324
323
322
322
322
322
322
322
322
322
325
327

Forecast for Llanrhidian, City and County of Swansea, United Kingdom (51.61,-4.17)

Generated: 24/08/26 05:39:10. Forecast: 24/08/26 to 30/08/26. Timezone: UTC+1.00