Clear Outside v1.0 - International Weather Forecasts For Astronomers

Sunday 31

Full Moon 100%

22:10

04:15

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
14 Bad
15 Bad
16 Bad
17 OK
18 OK
19 Good
20 Good
21 OK
22 Bad
23 Bad
00 Bad

Sun - Rise: 04:55, Set: 21:13, Transit: 13:04. Moon - Rise: 22:10, Set: 04:15. Civil Dark: 21:58 - 04:10. Nautical Dark: 23:04 - 03:04. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

80
87
90
97
100
100
100
100
100
99
100
94
89
77
79
51
28
11
0
0
22
49
62
55

Low Clouds (% Sky Obscured)

34
56
72
56
68
52
61
39
86
55
51
60
46
47
15
22
7
0
0
0
22
49
62
55

Medium Clouds (% Sky Obscured)

31
38
24
0
0
46
40
77
100
96
92
86
68
55
56
30
14
8
0
0
0
0
0
0

High Clouds (% Sky Obscured)

4
28
90
97
100
100
99
100
100
67
48
4
14
0
0
0
0
0
0
0
0
0
0
4

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
12
0
6
3
14
16
18
12
20
17
7
5
1
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)

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

Chance of Frost

Temperature (°C)

14
12
12
12
12
13
14
15
16
16
17
18
18
19
19
19
19
19
18
16
14
13
12
12

Feels Like (°C)

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

Dew Point (°C)

8
9
10
11
12
11
12
12
12
11
11
11
11
13
12
13
14
14
13
13
12
12
11
11

Relative Humidity (%)

69
80
92
95
96
92
89
84
78
72
68
65
63
67
63
69
73
72
76
79
86
95
96
96

Pressure (mb)

1017
1017
1017
1016
1016
1016
1017
1017
1017
1017
1017
1017
1017
1017
1017
1017
1017
1017
1017
1017
1018
1018
1018
1018

Ozone (du)

362
350
346
342
343
343
344
345
347
350
356
357
358
363
364
352
347
343
341
339
339
341
338
336

Monday 1

Waning Gibbous 99%

23:05

04:54

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
14 Bad
15 Bad
16 Bad
17 Bad
18 Bad
19 Bad
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad

Sun - Rise: 04:55, Set: 21:14, Transit: 13:04. Moon - Rise: 23:05, Set: 04:54. Civil Dark: 21:59 - 04:09. Nautical Dark: 23:06 - 03:02. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

99
85
89
99
100
100
100
100
100
100
97
100
100
100
100
100
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

50
60
60
63
57
49
53
67
72
70
61
66
71
96
100
94
90
87
91
100
78
85
78
84

Medium Clouds (% Sky Obscured)

0
19
29
48
50
54
60
86
99
91
56
99
100
89
92
88
98
100
100
100
100
100
84
59

High Clouds (% Sky Obscured)

43
27
69
94
100
100
100
100
100
97
76
100
100
100
100
100
100
100
100
100
100
100
100
100

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
1
0
0
0
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

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

Precipitation Probability (%)

0
0
0
1
2
0
0
0
0
0
4
43
48
41
79
55
66
95
89
95
95
95
78
60

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0.2
0
0
0.5
0
0
0.9
0.5
0.7
0.9
0.7
0.4
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

11
11
11
11
11
11
11
11
11
11
10
12
14
14
14
15
14
14
14
14
15
15
14
15

Relative Humidity (%)

98
98
98
100
98
96
92
86
80
73
66
68
77
82
85
92
90
92
95
96
98
98
96
98

Pressure (mb)

1018
1018
1018
1017
1017
1017
1017
1017
1016
1016
1015
1015
1014
1014
1013
1012
1011
1011
1010
1009
1009
1008
1008
1007

Ozone (du)

334
333
332
332
331
330
330
330
330
332
332
332
333
333
333
336
338
340
342
343
345
350
355
363

Tuesday 2

Waning Gibbous 97%

23:48

05:45

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
14 Bad
15 Bad
16 Bad
17 Bad
18 Bad
19 Bad
20 Bad
21 Bad
22 OK
23 OK
00 Bad

Sun - Rise: 04:54, Set: 21:15, Transit: 13:05. Moon - Rise: 23:48, Set: 05:45. Civil Dark: 22:01 - 04:08. Nautical Dark: 23:08 - 03:01. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

82
80
85
77
83
86
83
83
77
73
93
89
87
72
71
86
80
79
69
55
47
36
33
46

Low Clouds (% Sky Obscured)

82
69
72
59
69
77
65
68
61
59
77
75
63
53
54
49
38
44
43
42
47
36
33
46

Medium Clouds (% Sky Obscured)

3
80
85
15
10
13
9
8
19
17
15
20
20
5
12
31
34
16
7
3
0
0
0
0

High Clouds (% Sky Obscured)

23
3
15
14
10
23
21
51
77
73
80
85
85
72
71
86
80
79
57
27
0
0
0
0

ISS Passover

Visibility (miles)

0
0
1
9
2
1
9
6
5
6
4
9
9
9
9
3
8
3
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
Light Rain
Light Rain
None
None
None
Very Light Rain
Light Rain
Light Rain
Light Rain
Very Light Rain
Very Light Rain
None
None
Light Rain
Light Rain
Light Rain
Light Rain
None
None
None
None
None
None

Precipitation Probability (%)

58
95
95
24
20
22
49
75
75
78
77
71
57
60
84
95
95
77
40
25
14
7
1
0

Precipitation Amount (mm)

0
0.8
1.2
0
0
0
0.2
0.6
0.4
0.4
0.3
0.2
0
0
0.5
1.4
1.3
0.8
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

96
96
98
96
98
98
96
93
90
87
83
73
63
61
61
74
87
90
90
92
95
96
98
96

Pressure (mb)

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

Ozone (du)

370
373
370
380
383
386
390
392
391
393
395
396
395
396
397
397
397
396
387
385
382
378
371
366

Wednesday 3

Waning Gibbous 93%

00:19

06:47

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
14 Bad
15 Bad
16 Bad
17 Bad
18 Bad
19 Bad
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad

Sun - Rise: 04:53, Set: 21:16, Transit: 13:05. Moon - Rise: 00:19, Set: 06:47. Civil Dark: 22:02 - 04:08. Nautical Dark: 23:10 - 02:59. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

56
74
78
83
89
94
96
98
100
100
100
100
100
100
100
100
100
96
87
80
72
68
70
75

Low Clouds (% Sky Obscured)

55
64
72
68
66
63
64
66
71
71
91
100
100
100
100
100
100
87
79
69
56
52
56
59

Medium Clouds (% Sky Obscured)

0
0
0
8
14
21
26
29
52
45
93
99
100
97
100
65
61
56
34
15
10
13
18
21

High Clouds (% Sky Obscured)

0
1
6
32
53
75
83
91
100
100
100
100
100
99
100
50
27
0
0
0
0
0
0
0

ISS Passover

Visibility (miles)

9
0
1
9
9
9
9
9
9
9
9
9
9
0
0
0
8
4
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
Very Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Very Light Rain
None
None
None
None

Precipitation Probability (%)

0
0
0
0
0
0
0
1
1
6
36
36
38
45
61
80
91
95
84
63
30
24
14
10

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.3
0.5
0.6
0.8
0.5
0.3
0
0
0
0

Wind Speed/Direction (mph)

7
8
9
9
10
10
10
11
12
14
15
15
17
17
16
16
17
16
16
14
12
11
11
11

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

98
98
96
95
93
90
90
87
84
80
74
90
96
98
98
98
96
93
90
90
92
95
95
96

Pressure (mb)

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

Ozone (du)

360
355
352
348
346
345
345
344
346
346
349
351
357
362
367
377
390
394
398
399
401
403
401
399

Thursday 4

Waning Gibbous 88%

00:42

07:58

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
14 Bad
15 Bad
16 Bad
17 Bad
18 Bad
19 Bad
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad

Sun - Rise: 04:53, Set: 21:17, Transit: 13:05. Moon - Rise: 00:42, Set: 07:58. Civil Dark: 22:03 - 04:07. Nautical Dark: 23:12 - 02:58. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

81
86
92
93
92
93
89
84
80
65
54
41
50
62
74
63
52
41
43
43
46
53
58
58

Low Clouds (% Sky Obscured)

61
65
65
66
68
70
68
65
62
54
46
37
39
40
42
35
29
23
29
34
40
45
51
57

Medium Clouds (% Sky Obscured)

34
42
46
52
50
52
47
35
26
17
8
2
9
13
18
24
30
38
43
43
46
53
58
58

High Clouds (% Sky Obscured)

0
0
0
0
1
2
2
2
21
1
18
20
22
20
20
36
52
41
43
43
46
23
12
8

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 (%)

10
7
11
19
21
15
27
31
21
26
28
18
25
23
20
19
16
8
12
13
11
14
16
17

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)

13
13
13
13
13
13
14
15
16
17
18
18
19
18
18
18
17
16
15
13
11
9
9
8

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

93
93
93
93
93
93
93
90
87
76
68
64
67
62
60
58
62
67
70
73
77
81
82
87

Pressure (mb)

1002
1002
1002
1002
1002
1002
1002
1003
1003
1004
1004
1004
1004
1004
1004
1004
1005
1005
1005
1005
1006
1006
1006
1006

Ozone (du)

400
399
394
391
392
393
389
388
388
387
382
379
380
377
374
371
368
365
363
363
364
364
364
364

Friday 5

Waning Gibbous 81%

01:00

09:12

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
14 Bad
15 Bad
16 Bad
17 Bad
18 Bad
19 Bad
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad

Sun - Rise: 04:52, Set: 21:18, Transit: 13:05. Moon - Rise: 01:00, Set: 09:12. Civil Dark: 22:04 - 04:06. Nautical Dark: 23:13 - 02:57. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

56
53
51
64
79
95
96
98
99
99
99
99
98
96
94
96
98
100
98
97
97
86
73
61

Low Clouds (% Sky Obscured)

55
53
51
55
48
44
47
55
62
74
82
90
80
69
59
59
61
64
64
65
65
64
63
61

Medium Clouds (% Sky Obscured)

56
53
51
64
79
95
96
98
98
80
64
47
48
51
55
66
78
90
68
43
16
11
7
0

High Clouds (% Sky Obscured)

4
1
0
24
48
72
48
25
0
1
1
1
2
4
5
9
8
18
23
28
31
21
10
0

ISS Passover

Visibility (miles)

9
8
6
5
3
2
0
0
0
0
0
0
0
3
6
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
Very Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Very Light Rain
Very Light Rain
None
Very Light Rain
Light Rain
Light Rain
Very Light Rain
Very Light Rain
None
None
None
None

Precipitation Probability (%)

27
40
51
62
74
87
93
95
95
95
95
93
84
74
53
60
65
69
60
52
47
41
34
19

Precipitation Amount (mm)

0
0
0
0.3
0.4
0.5
0.6
0.7
0.6
0.7
0.7
0.4
0.3
0.3
0
0.3
0.4
0.5
0.3
0.2
0
0
0
0

Wind Speed/Direction (mph)

8
7
7
7
8
9
10
11
13
14
13
16
19
17
16
16
16
16
17
15
14
13
13
13

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

88
91
91
95
95
96
98
98
96
96
96
98
96
95
93
92
90
89
87
89
88
90
90
90

Pressure (mb)

1006
1005
1005
1005
1004
1003
1003
1002
1001
1000
1000
1000
1000
1002
1003
1004
1005
1006
1007
1008
1009
1010
1010
1011

Ozone (du)

364
364
364
363
367
370
374
380
386
392
398
405
412
407
401
396
397
398
399
400
402
403
395
387

Saturday 6

Waning Gibbous 72%

01:00

10:27

Sun - Rise: 04:52, Set: 21:19, Transit: 13:05. Moon - Rise: 01:00, Set: 10:27. Civil Dark: 22:05 - 04:05. Nautical Dark: 23:15 - 02:55. Astro Dark: N/A - N/A

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: 31/05/26 01:39:23. Forecast: 31/05/26 to 06/06/26. Timezone: UTC+1.00