Clear Outside v1.0 - International Weather Forecasts For Astronomers

Wednesday 29

Full Moon 100%

21:13

05:52

06 Good
07 Good
08 OK
09 Good
10 Bad
11 OK
12 OK
13 OK
14 OK
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

Sun - Rise: 05:15, Set: 20:58, Transit: 13:06. Moon - Rise: 21:13, Set: 05:52. Civil Dark: 21:42 - 04:32. Nautical Dark: 22:42 - 03:32. Astro Dark: 00:29 - 01:52

Total Clouds (% Sky Obscured)

14
7
23
4
67
39
29
35
36
70
39
62
87
91
99
80
87
82
90
82
95
92
99
81

Low Clouds (% Sky Obscured)

0
0
0
4
27
30
21
25
25
28
27
22
17
17
0
17
18
21
27
38
45
21
38
36

Medium Clouds (% Sky Obscured)

0
2
0
0
0
8
19
17
16
19
18
14
13
18
25
29
30
28
35
29
30
48
70
48

High Clouds (% Sky Obscured)

3
0
0
0
45
4
2
5
6
52
4
33
71
77
97
40
42
50
44
47
59
44
92
54

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)

3
2
3
5
7
9
10
12
13
13
12
11
12
13
11
11
8
8
7
7
7
7
6
6

Chance of Frost

Temperature (°C)

17
19
22
24
25
27
28
29
30
30
30
30
29
29
28
26
24
22
21
20
20
19
18
18

Feels Like (°C)

19
21
24
25
26
25
28
28
28
29
28
29
26
24
24
22
21
21
20
19
18
18
18
17

Dew Point (°C)

13
13
13
13
12
11
11
10
9
8
7
6
5
5
7
9
12
14
14
14
15
15
15
15

Relative Humidity (%)

76
67
56
50
45
38
33
29
26
24
22
21
20
22
26
34
47
59
65
67
72
80
82
83

Pressure (mb)

1014
1014
1014
1014
1014
1013
1013
1012
1012
1011
1011
1010
1010
1010
1010
1011
1011
1012
1012
1012
1012
1012
1012
1013

Ozone (du)

338
335
334
331
331
332
331
331
327
325
324
325
327
330
332
332
331
331
332
332
330
326
322
322

Thursday 30

Waning Gibbous 98%

21:27

No Set

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

Sun - Rise: 05:17, Set: 20:57, Transit: 13:06. Moon - Rise: 21:27, Set: No Set. Civil Dark: 21:40 - 04:34. Nautical Dark: 22:40 - 03:35. Astro Dark: 00:20 - 02:00

Total Clouds (% Sky Obscured)

72
81
66
89
83
88
80
44
38
28
25
10
6
0
0
0
0
0
0
0
0
0
0
0

Low Clouds (% Sky Obscured)

30
24
0
43
50
47
37
27
32
25
19
9
4
0
0
0
0
0
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

11
33
31
41
41
29
18
12
8
6
11
0
0
0
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

57
56
42
45
39
55
55
13
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
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
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)

7
9
11
11
12
12
12
13
14
15
15
16
16
14
13
9
8
8
7
6
6
6
6
6

Chance of Frost

Temperature (°C)

18
19
20
21
22
22
23
24
25
25
25
24
23
22
21
19
17
15
14
13
12
11
10
10

Feels Like (°C)

17
17
18
19
19
19
20
19
21
21
21
20
19
18
18
16
15
14
13
13
12
10
10
9

Dew Point (°C)

14
15
14
12
10
8
6
4
3
2
4
5
3
2
3
4
5
6
7
7
6
6
6
5

Relative Humidity (%)

79
76
69
56
45
38
32
28
23
22
25
28
27
26
30
36
46
54
60
64
67
71
73
73

Pressure (mb)

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

Ozone (du)

323
324
324
325
326
328
331
339
344
346
350
348
348
348
347
348
348
348
346
345
346
347
348
352

Friday 31

Waning Gibbous 94%

21:38

07:10

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

Sun - Rise: 05:18, Set: 20:55, Transit: 13:06. Moon - Rise: 21:38, Set: 07:10. Civil Dark: 21:38 - 04:36. Nautical Dark: 22:37 - 03:38. Astro Dark: 00:12 - 02:07

Total Clouds (% Sky Obscured)

0
0
0
0
46
38
52
46
39
35
34
34
54
65
89
59
57
52
48
53
58
72
75
75

Low Clouds (% Sky Obscured)

0
0
0
0
28
21
18
15
8
2
2
2
18
20
30
1
2
1
2
2
0
0
0
0

Medium Clouds (% Sky Obscured)

0
0
0
0
30
16
29
26
25
25
24
26
20
26
35
34
25
22
18
21
27
38
41
43

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
10
18

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
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)

5
5
5
5
4
4
5
6
7
7
8
7
6
5
5
5
5
5
6
6
6
5
5
4

Chance of Frost

Temperature (°C)

10
12
15
17
19
20
21
22
22
23
24
23
23
23
21
20
18
17
16
15
15
14
13
13

Feels Like (°C)

9
11
14
17
19
21
21
21
21
22
22
22
23
21
20
17
18
16
14
13
13
13
12
12

Dew Point (°C)

5
4
3
3
3
2
3
3
2
2
3
3
3
3
7
5
6
7
7
5
5
6
6
6

Relative Humidity (%)

71
57
46
39
34
31
29
28
26
25
26
26
26
26
39
37
45
50
53
51
53
58
63
64

Pressure (mb)

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

Ozone (du)

359
357
357
357
359
358
359
360
360
359
359
358
359
358
359
363
365
365
364
363
364
362
359
362

Saturday 1

Waning Gibbous 88%

21:48

08:27

06 Bad
07 Bad
08 OK
09 OK
10 OK
11 OK
12 Good
13 OK
14 OK
15 OK
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
05 Bad

Sun - Rise: 05:20, Set: 20:53, Transit: 13:06. Moon - Rise: 21:48, Set: 08:27. Civil Dark: 21:36 - 04:38. Nautical Dark: 22:34 - 03:40. Astro Dark: 00:05 - 02:13

Total Clouds (% Sky Obscured)

65
55
45
39
29
22
17
27
33
48
43
49
49
57
66
65
64
65
62
90
93
70
75
99

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
1
0
1
1
0
0
0
0
0
0
3
7
11
11
11

Medium Clouds (% Sky Obscured)

41
37
36
32
27
20
14
21
29
38
32
30
28
27
29
27
26
25
28
29
34
35
42
48

High Clouds (% Sky Obscured)

21
13
11
12
11
7
5
6
8
10
16
19
26
41
49
50
36
26
15
67
69
24
34
89

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
9
14

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

Chance of Frost

Temperature (°C)

13
14
16
18
20
21
23
23
24
25
25
24
23
22
21
20
18
18
17
16
15
15
14
14

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

63
52
43
42
38
33
30
28
26
25
24
25
26
28
33
44
52
55
60
69
73
76
79
82

Pressure (mb)

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

Ozone (du)

358
356
352
350
349
345
341
340
338
336
336
336
333
331
329
328
328
327
328
327
328
328
327
327

Sunday 2

Waning Gibbous 80%

21:58

09:45

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
05 Bad

Sun - Rise: 05:22, Set: 20:52, Transit: 13:06. Moon - Rise: 21:58, Set: 09:45. Civil Dark: 21:34 - 04:40. Nautical Dark: 22:32 - 03:43. Astro Dark: 23:59 - 02:18

Total Clouds (% Sky Obscured)

96
95
98
100
97
94
90
92
93
95
97
99
100
100
100
100
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

9
3
5
8
5
2
0
0
0
0
1
1
3
5
7
10
16
21
25
30
31
36
40
50

Medium Clouds (% Sky Obscured)

50
46
49
46
51
55
57
70
82
95
96
96
95
97
98
100
96
92
88
88
87
87
86
84

High Clouds (% Sky Obscured)

87
91
96
100
77
52
28
37
46
53
68
84
100
99
99
99
99
100
100
100
100
100
96
92

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
Very Light Rain
Very Light Rain
None

Precipitation Probability (%)

18
0
0
0
2
7
8
8
5
0
7
11
14
19
25
28
40
49
56
53
52
51
47
32

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

14
14
18
19
21
21
22
23
23
23
23
23
22
21
20
19
18
18
17
17
17
17
17
17

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

82
70
60
53
46
47
47
48
49
50
51
54
57
61
65
68
71
73
74
77
77
78
78
78

Pressure (mb)

1016
1016
1016
1016
1016
1015
1015
1014
1014
1014
1013
1013
1013
1012
1012
1012
1012
1012
1012
1011
1011
1011
1010
1010

Ozone (du)

327
327
327
327
326
326
326
326
327
327
327
328
329
330
332
334
335
335
335
335
333
332
331
330

Monday 3

Waning Gibbous 71%

22:08

11:04

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 OK
21 Good
22 OK
23 Bad
00 Bad
01 Bad
02 Bad
03 Bad
04 Bad
05 Bad

Sun - Rise: 05:23, Set: 20:50, Transit: 13:06. Moon - Rise: 22:08, Set: 11:04. Civil Dark: 21:32 - 04:42. Nautical Dark: 22:29 - 03:45. Astro Dark: 23:53 - 02:23

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
94
90
88
87
88
90
62
35
6
34
60
87
92
95
99
98
98

Low Clouds (% Sky Obscured)

57
60
62
64
59
54
49
46
42
39
36
34
31
22
12
0
0
0
0
11
23
32
29
25

Medium Clouds (% Sky Obscured)

82
89
94
99
90
81
76
78
80
84
81
78
80
55
30
5
9
13
15
17
21
21
39
56

High Clouds (% Sky Obscured)

88
78
73
65
70
76
72
55
38
22
15
6
1
1
1
1
28
56
83
87
91
95
89
84

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 (%)

9
16
18
18
19
16
3
15
15
11
11
10
1
1
0
0
0
0
0
0
0
0
1
1

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)

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

Chance of Frost

Temperature (°C)

18
18
19
20
21
22
24
25
25
25
25
24
23
22
21
20
18
17
16
15
14
14
13
13

Feels Like (°C)

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

Dew Point (°C)

14
14
14
14
14
15
15
15
17
17
18
17
15
13
13
13
14
13
11
11
11
11
11
9

Relative Humidity (%)

78
78
73
70
66
62
58
55
59
62
64
61
57
55
61
67
74
74
74
75
78
82
84
76

Pressure (mb)

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

Ozone (du)

330
329
329
328
328
329
330
331
330
328
326
325
323
322
319
316
313
312
310
309
307
305
304
304

Tuesday 4

Waning Gibbous 60%

22:20

12:26

Sun - Rise: 05:25, Set: 20:48, Transit: 13:06. Moon - Rise: 22:20, Set: 12:26. Civil Dark: 21:30 - 04:44. Nautical Dark: 22:26 - 03:48. Astro Dark: 23:48 - 02:28

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 Boston, Lincolnshire, United Kingdom (52.98,-0.02)

Generated: 29/07/26 06:53:59. Forecast: 29/07/26 to 04/08/26. Timezone: UTC+1.00