Clear Outside v1.0 - International Weather Forecasts For Astronomers

Thursday 27

Waxing Gibbous 100%

19:50

05:06

02 Bad
03 Bad
04 Bad
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

Sun - Rise: 06:12, Set: 20:03, Transit: 13:08. Moon - Rise: 19:50, Set: 05:06. Civil Dark: 20:39 - 05:37. Nautical Dark: 21:23 - 04:53. Astro Dark: 22:12 - 04:04

Total Clouds (% Sky Obscured)

62
70
77
100
100
100
100
100
100
100
98
97
100
100
84
75
69
78
70
65
68
67
46
45

Low Clouds (% Sky Obscured)

42
70
77
78
84
100
88
87
74
51
59
56
49
56
51
31
39
44
31
25
27
24
34
33

Medium Clouds (% Sky Obscured)

62
70
77
97
100
95
87
89
85
82
53
29
25
91
78
30
9
11
3
8
8
0
1
0

High Clouds (% Sky Obscured)

62
70
77
100
100
100
100
100
100
97
82
94
100
100
37
41
16
15
15
15
15
20
0
0

ISS Passover

Visibility (miles)

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

Precipitation Probability (%)

37
69
81
73
95
95
95
95
95
91
69
34
25
17
8
4
4
4
5
4
0
0
0
0

Precipitation Amount (mm)

1.2
1
0
0
0.7
2.6
2.6
1.7
1
0.7
0.4
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

10
9
11
9
9
9
10
10
10
10
9
11
12
13
15
14
14
13
12
10
10
10
9
9

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

16
16
16
16
16
17
18
17
17
18
16
13
9
7
7
8
9
10
12
13
13
14
14
14

Relative Humidity (%)

86
88
86
88
90
92
96
93
89
89
73
55
42
37
38
42
46
55
65
74
83
89
95
96

Pressure (mb)

1009
1009
1008
1008
1007
1007
1007
1007
1007
1007
1007
1006
1006
1006
1006
1006
1006
1007
1007
1007
1007
1008
1007
1007

Ozone (du)

317
319
317
318
317
316
319
322
326
328
332
334
335
337
339
342
342
341
340
341
342
345
349
349

Friday 28

Full Moon 99%

20:02

06:22

02 Bad
03 Bad
04 Bad
05 Bad
06 Bad
07 OK
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

Sun - Rise: 06:14, Set: 20:01, Transit: 13:08. Moon - Rise: 20:02, Set: 06:22. Civil Dark: 20:36 - 05:39. Nautical Dark: 21:20 - 04:55. Astro Dark: 22:09 - 04:06

Total Clouds (% Sky Obscured)

56
60
62
53
49
37
50
57
94
99
95
98
100
100
100
87
84
80
73
79
57
72
59
98

Low Clouds (% Sky Obscured)

30
35
33
22
16
18
22
17
25
37
34
37
50
75
92
85
64
72
70
40
44
46
47
52

Medium Clouds (% Sky Obscured)

3
5
5
4
3
3
13
25
37
34
37
91
100
99
99
17
78
65
3
0
0
9
0
0

High Clouds (% Sky Obscured)

21
60
62
53
2
0
50
57
91
99
61
87
85
4
9
5
0
0
38
79
5
72
10
97

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
1
21
77
67
50
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
Light Rain
None
None
None
None
None
Light Rain
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

0
0
0
0
0
0
4
62
29
21
16
12
36
66
67
32
16
14
3
0
1
0
0
0

Precipitation Amount (mm)

0
0
0
0
0
0
0
0.8
0
0
0
0
0
0.4
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

9
9
10
10
10
10
12
16
16
17
18
20
21
20
18
15
15
16
15
12
12
11
11
10

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

15
15
15
15
15
15
15
16
15
15
14
14
13
12
10
13
15
15
15
15
16
15
15
15

Dew Point (°C)

14
14
13
13
14
14
13
12
9
7
6
5
3
2
4
12
13
12
13
14
15
15
15
15

Relative Humidity (%)

96
95
95
93
95
95
83
72
55
45
42
37
33
33
40
73
76
71
78
85
95
95
96
95

Pressure (mb)

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

Ozone (du)

349
350
349
349
350
350
351
349
344
341
339
338
335
333
329
328
324
322
321
322
320
316
312
309

Saturday 29

Waning Gibbous 98%

20:14

07:39

02 Bad
03 Bad
04 Bad
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

Sun - Rise: 06:15, Set: 19:59, Transit: 13:07. Moon - Rise: 20:14, Set: 07:39. Civil Dark: 20:34 - 05:40. Nautical Dark: 21:17 - 04:57. Astro Dark: 22:06 - 04:09

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
99
90
95
100
90
83
60
75
72
69
68
80
81
100
100

Low Clouds (% Sky Obscured)

61
82
46
41
53
96
96
98
95
92
78
89
83
85
71
57
53
61
69
68
80
63
85
85

Medium Clouds (% Sky Obscured)

7
3
99
99
99
100
99
100
100
90
23
61
94
6
12
7
20
15
9
4
4
0
0
1

High Clouds (% Sky Obscured)

100
100
100
100
100
100
100
98
100
18
0
79
67
0
0
1
0
7
15
22
43
64
90
83

ISS Passover

Visibility (miles)

9
9
9
9
9
7
7
3
3
2
9
5
4
4
9
7
8
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
Very Light Rain
None
Light Rain
Light Rain
Light Rain
Light Rain
None
Very Light Rain
Light Rain
Light Rain
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

0
0
11
40
50
95
95
95
95
95
86
95
76
41
30
35
26
18
16
11
2
4
4
2

Precipitation Amount (mm)

0
0
0
0.2
0
1.2
1.4
1.8
2.3
0
0.3
1.1
0.4
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

13
13
13
13
13
13
14
13
12
12
14
16
14
12
13
13
13
13
12
12
12
11
12
11

Dew Point (°C)

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

Relative Humidity (%)

96
93
86
89
96
93
95
93
93
95
92
75
76
81
88
82
82
85
92
92
92
89
90
87

Pressure (mb)

1007
1006
1006
1006
1005
1005
1005
1004
1003
1002
1002
1001
1001
1001
1001
1001
1002
1002
1003
1004
1005
1006
1006
1007

Ozone (du)

306
304
301
300
300
302
303
303
301
306
308
307
305
306
307
306
305
306
308
311
314
311
311
313

Sunday 30

Waning Gibbous 96%

20:26

08:57

02 Bad
03 Bad
04 Bad
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

Sun - Rise: 06:17, Set: 19:57, Transit: 13:07. Moon - Rise: 20:26, Set: 08:57. Civil Dark: 20:32 - 05:42. Nautical Dark: 21:15 - 04:59. Astro Dark: 22:03 - 04:11

Total Clouds (% Sky Obscured)

94
83
72
76
72
72
87
86
91
95
100
100
100
100
92
83
75
77
77
79
84
53
74
92

Low Clouds (% Sky Obscured)

73
52
23
25
24
33
26
22
27
38
76
79
73
63
59
40
39
48
71
70
69
38
56
44

Medium Clouds (% Sky Obscured)

2
4
6
5
7
6
5
5
7
7
8
13
73
80
77
79
75
74
69
74
4
7
11
92

High Clouds (% Sky Obscured)

86
83
71
62
46
33
35
35
59
80
100
100
100
100
83
67
55
55
55
55
55
1
3
55

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
4
3
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
Very Light Rain
Light Rain
Very Light Rain
Very Light Rain
Light Rain
Very Light Rain
None
None
Light Rain
Light Rain
None
None
None
Light Rain
None

Precipitation Probability (%)

0
0
4
8
10
21
24
26
48
64
71
63
70
77
66
50
51
95
95
52
20
40
85
74

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0.3
0.5
0.3
0.3
0.4
0.2
0
0
0.8
2.4
0
0
0
0.4
0

Wind Speed/Direction (mph)

9
8
7
7
7
7
9
11
13
14
15
17
17
17
18
17
16
15
15
13
14
15
16
15

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

89
89
90
95
96
95
89
79
67
58
55
51
54
59
58
61
64
71
85
93
93
92
92
95

Pressure (mb)

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

Ozone (du)

314
315
315
313
313
312
312
311
310
310
310
311
313
317
319
321
323
321
321
324
326
331
332
335

Monday 31

Waning Gibbous 91%

20:39

10:17

02 Bad
03 Bad
04 Bad
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

Sun - Rise: 06:19, Set: 19:55, Transit: 13:07. Moon - Rise: 20:39, Set: 10:17. Civil Dark: 20:29 - 05:44. Nautical Dark: 21:12 - 05:01. Astro Dark: 22:00 - 04:14

Total Clouds (% Sky Obscured)

88
85
79
66
47
54
61
90
100
100
100
100
100
100
98
94
90
89
89
89
81
69
69
78

Low Clouds (% Sky Obscured)

40
47
44
59
33
26
17
56
84
47
85
75
63
54
45
36
29
26
16
7
22
37
52
66

Medium Clouds (% Sky Obscured)

88
20
0
5
0
0
0
0
2
7
14
44
64
84
80
74
70
76
82
89
81
69
69
78

High Clouds (% Sky Obscured)

50
55
49
13
0
17
37
62
79
100
100
100
100
100
92
81
68
53
42
33
24
19
28
23

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 (%)

35
4
5
5
2
0
1
16
18
8
24
23
24
25
27
28
26
19
11
0
4
9
4
15

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)

15
15
16
16
16
15
16
17
18
17
18
18
18
18
18
16
15
13
11
10
8
8
9
10

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

93
93
95
93
95
95
90
83
79
79
68
67
65
61
57
60
64
67
70
75
80
82
82
83

Pressure (mb)

1005
1005
1005
1006
1007
1007
1008
1009
1010
1010
1011
1011
1012
1012
1012
1013
1013
1014
1014
1014
1015
1015
1014
1014

Ozone (du)

334
335
336
336
338
331
324
318
315
314
314
313
313
313
313
314
315
316
318
319
321
321
322
322

Tuesday 1

Waning Gibbous 83%

20:56

11:40

02 Bad
03 Bad
04 Bad
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

Sun - Rise: 06:20, Set: 19:52, Transit: 13:06. Moon - Rise: 20:56, Set: 11:40. Civil Dark: 20:27 - 05:45. Nautical Dark: 21:10 - 05:03. Astro Dark: 21:57 - 04:16

Total Clouds (% Sky Obscured)

80
78
74
74
75
79
80
83
73
62
52
44
40
33
36
35
34
51
70
87
88
90
90
85

Low Clouds (% Sky Obscured)

80
78
74
74
75
79
80
83
69
54
38
27
17
6
6
6
6
6
7
8
5
2
4
4

Medium Clouds (% Sky Obscured)

80
78
74
74
75
54
34
18
16
14
12
13
17
21
18
11
5
4
2
0
5
6
9
9

High Clouds (% Sky Obscured)

21
12
5
4
0
0
0
0
0
0
0
9
16
23
18
14
10
34
58
81
81
84
84
75

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

Precipitation Probability (%)

20
19
22
22
22
34
39
44
39
32
28
25
22
28
25
27
34
31
18
1
6
7
8
26

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

10
11
11
11
10
10
11
13
14
14
14
14
15
15
15
14
14
13
12
11
10
10
9
9

Chance of Frost

Temperature (°C)

13
13
13
13
13
13
14
16
17
18
19
20
20
20
20
19
18
17
16
16
15
15
14
14

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

84
86
89
87
89
89
86
83
81
69
58
49
44
41
37
41
46
51
59
67
75
80
86
92

Pressure (mb)

1014
1014
1014
1014
1014
1014
1014
1014
1015
1015
1015
1015
1015
1015
1015
1015
1015
1015
1016
1016
1016
1016
1016
1016

Ozone (du)

324
325
327
327
328
328
329
329
330
329
327
325
326
327
327
327
327
327
327
328
328
327
327
326

Wednesday 2

Waning Gibbous 74%

21:19

13:06

Sun - Rise: 06:22, Set: 19:50, Transit: 13:06. Moon - Rise: 21:19, Set: 13:06. Civil Dark: 20:25 - 05:47. Nautical Dark: 21:07 - 05:05. Astro Dark: 21:54 - 04:18

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 Marlborough, Wiltshire, United Kingdom (51.42,-1.73)

Generated: 27/08/26 02:05:16. Forecast: 27/08/26 to 02/09/26. Timezone: UTC+1.00