Clear Outside v1.0 - International Weather Forecasts For Astronomers

Wednesday 27

Waxing Gibbous 89%

17:26

03:09

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

Sun - Rise: 04:58, Set: 21:08, Transit: 13:04. Moon - Rise: 17:26, Set: 03:09. Civil Dark: 21:52 - 04:14. Nautical Dark: 22:56 - 03:09. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

8
9
37
4
7
47
42
6
19
13
36
100
100
100
81
19
13
48
42
9
68
17
40
87

Low Clouds (% Sky Obscured)

0
0
0
0
0
5
13
0
0
0
0
0
0
0
0
0
0
0
32
4
0
0
0
0

Medium Clouds (% Sky Obscured)

4
9
0
3
6
29
21
4
16
13
29
25
50
37
24
13
8
37
23
0
0
0
0
4

High Clouds (% Sky Obscured)

0
0
3
4
1
2
6
1
0
3
3
59
48
43
75
19
13
48
40
5
26
12
40
70

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

Precipitation Probability (%)

1
0
0
0
0
0
0
0
0
1
4
2
12
62
19
21
43
35
34
50
30
5
0
0

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0.8
0
0
0
0
0
0.2
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

21
23
24
26
28
28
29
28
28
27
25
21
19
17
16
15
15
14
14
14
15
16
18
20

Feels Like (°C)

22
23
25
27
28
29
31
30
29
27
24
20
17
16
14
12
12
12
13
14
16
17
19
21

Dew Point (°C)

16
16
17
18
18
19
21
21
22
22
20
16
13
12
11
11
11
12
13
13
14
15
17
18

Relative Humidity (%)

74
66
61
59
57
56
61
65
69
74
74
72
68
71
73
74
76
84
90
92
95
93
92
88

Pressure (mb)

1025
1025
1025
1024
1024
1023
1022
1022
1022
1022
1022
1022
1022
1022
1023
1022
1022
1021
1021
1021
1021
1021
1021
1021

Ozone (du)

333
334
334
334
335
336
336
335
335
336
336
334
332
332
333
332
333
335
335
335
334
336
335
335

Thursday 28

Waxing Gibbous 95%

18:40

03:25

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 Good
00 Bad
01 Bad
02 Bad
03 Bad
04 Bad
05 Bad
06 Bad
07 Bad
08 Bad
09 Bad

Sun - Rise: 04:57, Set: 21:09, Transit: 13:04. Moon - Rise: 18:40, Set: 03:25. Civil Dark: 21:54 - 04:12. Nautical Dark: 22:59 - 03:07. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

100
100
100
100
100
77
45
100
100
100
100
98
98
13
100
100
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
32
30
34

Medium Clouds (% Sky Obscured)

45
35
40
94
58
71
27
62
84
51
95
44
22
10
4
26
27
30
19
14
93
62
92
100

High Clouds (% Sky Obscured)

44
79
100
100
100
66
45
55
92
100
89
82
97
13
100
95
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
2
9
9
9
9
9
9

Fog (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
2
4
3
2
2
1
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
1
4
0
4
2
2
1
2
15
5
6
3
2
0
0
1
6
18
4
23
7
2

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)

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

Chance of Frost

Temperature (°C)

22
24
24
25
26
26
27
27
26
25
24
22
21
20
19
18
16
15
15
15
15
15
15
16

Feels Like (°C)

22
24
23
23
24
25
26
26
27
24
24
21
20
19
18
17
15
14
14
13
13
13
13
15

Dew Point (°C)

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

Relative Humidity (%)

79
68
61
60
59
59
64
67
69
73
82
85
84
82
86
96
98
98
96
95
95
92
85
82

Pressure (mb)

1021
1021
1020
1020
1020
1020
1020
1020
1020
1020
1019
1019
1020
1020
1020
1020
1020
1020
1020
1020
1021
1021
1021
1022

Ozone (du)

336
335
334
332
330
328
327
326
325
323
327
335
331
329
330
329
327
326
323
323
322
323
322
322

Friday 29

Waxing Gibbous 98%

19:54

03:46

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

Sun - Rise: 04:56, Set: 21:11, Transit: 13:04. Moon - Rise: 19:54, Set: 03:46. Civil Dark: 21:55 - 04:11. Nautical Dark: 23:01 - 03:06. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
95
51
44
35
74
76
62
72
58
51
47
37
43
95
96
98
100

Low Clouds (% Sky Obscured)

29
25
16
8
6
0
0
0
0
0
0
0
0
0
2
3
6
2
10
10
0
0
0
0

Medium Clouds (% Sky Obscured)

95
99
39
77
65
25
20
20
12
12
7
9
9
2
6
0
0
2
0
3
5
3
4
4

High Clouds (% Sky Obscured)

100
100
100
100
98
85
85
85
5
1
1
15
15
20
15
15
16
17
15
10
88
92
96
100

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
5
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
2
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)

8
9
9
11
10
11
11
10
9
8
7
6
5
4
3
3
3
2
2
2
2
2
3
4

Chance of Frost

Temperature (°C)

17
18
19
20
20
20
20
19
19
19
18
16
14
14
13
12
11
11
10
10
10
12
14
16

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

79
76
68
59
57
54
54
56
64
71
79
85
87
89
90
90
90
91
91
91
91
86
83
75

Pressure (mb)

1022
1023
1022
1022
1022
1022
1022
1022
1022
1022
1022
1023
1023
1023
1023
1023
1023
1022
1022
1022
1022
1022
1022
1021

Ozone (du)

321
324
328
333
335
338
339
337
335
332
331
332
331
333
335
336
336
336
336
336
336
335
335
336

Saturday 30

Waxing Gibbous 100%

21:05

04:15

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
05 Bad
06 Bad
07 Bad
08 Bad
09 Bad

Sun - Rise: 04:55, Set: 21:12, Transit: 13:04. Moon - Rise: 21:05, Set: 04:15. Civil Dark: 21:57 - 04:10. Nautical Dark: 23:03 - 03:04. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

99
100
100
100
100
96
77
75
75
100
100
100
100
100
100
100
100
100
100
100
100
96
92
88

Low Clouds (% Sky Obscured)

1
4
4
3
2
0
0
0
0
11
22
29
32
34
35
66
73
75
56
55
59
55
43
31

Medium Clouds (% Sky Obscured)

68
69
65
59
65
60
19
15
16
17
17
22
35
62
78
77
93
99
100
100
100
96
92
77

High Clouds (% Sky Obscured)

95
100
100
100
99
90
77
75
75
100
100
100
100
100
100
100
100
100
100
100
100
70
40
0

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
1
12
16
21
24
23
18

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)

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

Chance of Frost

Temperature (°C)

18
19
19
20
20
21
21
20
19
18
17
15
14
14
13
13
13
14
14
13
14
14
14
15

Feels Like (°C)

16
17
17
17
17
19
19
19
19
18
15
13
12
11
11
11
11
12
12
12
12
11
12
12

Dew Point (°C)

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

Relative Humidity (%)

68
63
62
55
55
57
58
59
66
70
75
77
75
79
82
86
82
80
83
89
87
89
86
78

Pressure (mb)

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

Ozone (du)

337
338
339
344
350
355
357
364
361
358
355
356
355
347
342
338
336
334
336
336
337
337
340
345

Sunday 31

Full Moon 99%

22:10

04:54

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
05 Bad
06 Bad
07 Bad
08 Bad
09 Bad

Sun - Rise: 04:55, Set: 21:13, Transit: 13:04. Moon - Rise: 22:10, Set: 04:54. Civil Dark: 21:58 - 04:09. Nautical Dark: 23:04 - 03:02. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

84
86
86
88
92
93
90
86
82
82
82
82
89
87
92
92
90
88
92
96
100
100
100
100

Low Clouds (% Sky Obscured)

38
56
65
73
83
91
84
81
72
79
81
82
83
82
81
80
79
80
83
88
93
92
91
90

Medium Clouds (% Sky Obscured)

62
42
33
41
39
37
44
46
50
37
19
3
2
1
0
11
21
32
38
44
62
68
67
64

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
19
39
59
44
34
31
64
86
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
6
3
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
None
None
None
None
None
None
None
None
None
Very Light Rain
Very Light Rain
Very Light Rain
Very Light Rain

Precipitation Probability (%)

14
21
25
22
19
11
8
7
3
2
6
0
2
5
0
2
0
0
25
39
53
54
56
64

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.2
0.2
0.3
0.3

Wind Speed/Direction (mph)

13
14
15
15
16
17
16
16
14
12
11
10
8
8
8
8
9
10
11
11
11
12
13
15

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

72
68
68
70
65
67
64
64
69
74
81
86
95
95
95
95
92
89
86
89
93
98
98
98

Pressure (mb)

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

Ozone (du)

344
344
347
349
347
347
341
340
335
334
332
332
332
333
335
334
333
332
331
331
331
331
332
333

Monday 1

Waning Gibbous 97%

23:05

05:45

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
05 Bad
06 Bad
07 Bad
08 Bad
09 Bad

Sun - Rise: 04:54, Set: 21:14, Transit: 13:04. Moon - Rise: 23:05, Set: 05:45. Civil Dark: 21:59 - 04:08. Nautical Dark: 23:06 - 03:01. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
97
93
91
88
86
82
90
93
100
99
97
96
97
98
100

Low Clouds (% Sky Obscured)

92
95
97
83
70
59
74
86
100
97
93
90
86
81
76
76
78
80
80
81
79
78
76
75

Medium Clouds (% Sky Obscured)

76
88
100
91
82
75
81
88
96
87
77
63
43
21
1
7
15
28
37
50
63
54
44
33

High Clouds (% Sky Obscured)

99
99
99
99
100
100
100
100
100
70
37
10
10
5
5
36
68
100
70
41
26
44
56
61

ISS Passover

Visibility (miles)

0
0
0
0
0
0
0
1
1
1
1
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

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

Precipitation Probability (%)

67
67
61
54
58
59
71
83
95
95
95
78
63
49
34
24
14
7
9
7
0
14
16
15

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

96
98
98
98
96
98
96
96
96
98
98
98
96
96
96
95
96
96
96
98
96
96
93
90

Pressure (mb)

1012
1011
1011
1010
1010
1009
1009
1008
1007
1007
1006
1006
1006
1006
1006
1006
1005
1005
1005
1005
1005
1005
1005
1005

Ozone (du)

334
337
341
344
344
345
345
348
350
352
356
360
365
366
368
370
374
377
381
385
389
393
397
401

Tuesday 2

Waning Gibbous 93%

23:48

06:47

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
05 Bad
06 Bad

Sun - Rise: 04:53, Set: 21:15, Transit: 13:05. Moon - Rise: 23:48, Set: 06:47. Civil Dark: 22:01 - 04:08. Nautical Dark: 23:08 - 02:59. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

100
100
100
98
95
93
94
96
97
97
97
91
87
87
89
77
64
51
52
54
57

Low Clouds (% Sky Obscured)

70
65
60
66
72
78
80
83
82
78
76
73
71
71
71
65
60
51
52
54
57

Medium Clouds (% Sky Obscured)

29
30
31
30
33
31
28
29
25
26
28
37
32
27
26
17
10
0
0
0
0

High Clouds (% Sky Obscured)

41
21
1
5
6
6
35
63
70
68
62
50
33
17
0
0
0
0
1
1
2

ISS Passover

Visibility (miles)

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

Fog (%)

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

Precipitation Probability (%)

35
49
77
82
84
83
83
90
95
95
95
95
95
81
51
42
25
6
3
1
0

Precipitation Amount (mm)

0
0
0.6
0.6
0.6
0.6
0.5
0.6
0.9
1.2
1.8
2.9
0.4
0.3
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

15
15
15
16
16
16
17
16
15
15
13
12
10
10
12
15
14
15
14
14
14

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

84
86
87
89
89
89
86
87
89
90
93
95
95
96
95
96
96
96
96
96
98

Pressure (mb)

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

Ozone (du)

405
402
399
396
397
398
399
401
402
403
402
401
399
394
389
383
378
373
367
364
361

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

Generated: 27/05/26 10:42:28. Forecast: 27/05/26 to 02/06/26. Timezone: UTC+1.00