Clear Outside v1.0 - International Weather Forecasts For Astronomers

Monday 27

Waxing Gibbous 93%

17:04

04:21

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

Sun - Rise: 05:38, Set: 20:22, Transit: 13:00. Moon - Rise: 17:04, Set: 04:21. Civil Dark: 20:59 - 05:00. Nautical Dark: 21:48 - 04:11. Astro Dark: 22:48 - 03:11

Total Clouds (% Sky Obscured)

86
74
86
100
95
100
100
95
95
97
96
100
86
79
90
67
39
23
0
22
0
28
0
0

Low Clouds (% Sky Obscured)

45
74
86
100
95
100
100
92
90
95
90
100
71
58
47
32
39
23
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

25
2
0
2
2
79
54
28
30
74
80
92
80
63
83
38
21
23
0
11
0
10
0
0

High Clouds (% Sky Obscured)

0
0
0
2
3
1
3
0
0
30
14
65
70
70
12
0
0
0
0
0
0
0
0
0

ISS Passover

Visibility (miles)

9
9
9
9
6
4
1
8
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 (%)

41
8
0
0
5
19
20
16
6
16
15
7
5
3
3
2
0
0
0
0
0
0
3
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)

9
9
11
11
12
10
10
11
12
14
14
15
16
16
16
17
18
19
19
19
18
17
16
16

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

10
9
8
7
7
7
7
7
7
7
7
8
8
7
7
6
5
7
7
7
6
5
4
4

Relative Humidity (%)

95
95
96
98
98
96
98
96
93
95
95
93
88
81
72
61
57
60
64
66
67
69
72
75

Pressure (mb)

1024
1024
1024
1024
1024
1024
1024
1024
1024
1025
1026
1026
1026
1026
1025
1025
1024
1024
1024
1024
1024
1025
1025
1025

Ozone (du)

441
445
444
444
446
448
449
449
445
437
430
427
427
426
425
423
419
416
414
411
408
404
401
400

Tuesday 28

Waxing Gibbous 93%

18:19

04:32

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

Sun - Rise: 05:36, Set: 20:23, Transit: 13:00. Moon - Rise: 18:19, Set: 04:32. Civil Dark: 21:01 - 04:58. Nautical Dark: 21:51 - 04:09. Astro Dark: 22:51 - 03:08

Total Clouds (% Sky Obscured)

0
0
20
37
50
54
54
48
0
0
0
0
0
0
0
0
86
86
95
96
12
5
5
5

Low Clouds (% Sky Obscured)

0
0
20
37
50
54
54
48
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Medium 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
0
0

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
52
52
80
87
12
5
5
5

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)

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

Chance of Frost

Temperature (°C)

7
6
6
5
5
5
5
5
6
8
10
13
14
15
16
17
17
17
16
15
14
12
11
10

Feels Like (°C)

2
2
1
1
1
1
2
1
2
3
5
8
9
10
10
11
11
11
10
9
8
6
5
5

Dew Point (°C)

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

Relative Humidity (%)

79
82
83
88
90
91
91
91
85
75
69
64
59
56
53
54
56
59
62
60
63
63
63
66

Pressure (mb)

1025
1025
1025
1025
1025
1025
1025
1025
1025
1025
1025
1025
1025
1025
1024
1024
1024
1023
1023
1023
1023
1024
1024
1025

Ozone (du)

401
398
397
395
395
394
393
394
395
396
398
399
399
399
399
398
397
396
393
392
390
388
387
388

Wednesday 29

Waxing Gibbous 97%

19:33

04:44

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

Sun - Rise: 05:34, Set: 20:25, Transit: 12:59. Moon - Rise: 19:33, Set: 04:44. Civil Dark: 21:03 - 04:56. Nautical Dark: 21:53 - 04:06. Astro Dark: 22:55 - 03:04

Total Clouds (% Sky Obscured)

4
3
3
10
13
5
4
2
2
2
2
2
1
0
1
0
0
0
0
0
0
0
0
0

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
0
0
0

Medium 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
0
0

High Clouds (% Sky Obscured)

4
3
3
10
13
5
4
2
2
2
2
2
1
0
1
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)

16
16
16
15
15
14
14
14
14
16
17
18
18
18
18
18
17
16
15
14
13
11
10
9

Chance of Frost

Temperature (°C)

9
9
9
9
9
8
8
8
9
10
12
14
16
17
18
19
18
18
17
16
15
13
12
11

Feels Like (°C)

3
3
4
4
3
3
4
4
5
6
8
10
11
12
13
14
14
14
14
14
13
12
11
10

Dew Point (°C)

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

Relative Humidity (%)

68
69
69
70
72
71
74
75
74
71
64
54
47
44
44
45
45
50
54
58
62
70
73
77

Pressure (mb)

1024
1024
1024
1024
1023
1023
1023
1023
1023
1023
1023
1023
1022
1022
1021
1021
1020
1020
1019
1019
1019
1019
1020
1020

Ozone (du)

388
389
390
390
391
391
391
392
393
394
395
394
393
391
390
387
385
383
380
379
378
376
374
372

Thursday 30

Waxing Gibbous 99%

20:48

04:57

23 Good
00 Good
01 Good
02 Good
03 Good
04 Good
05 OK
06 OK
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

Sun - Rise: 05:32, Set: 20:27, Transit: 12:59. Moon - Rise: 20:48, Set: 04:57. Civil Dark: 21:05 - 04:54. Nautical Dark: 21:55 - 04:03. Astro Dark: 22:58 - 03:01

Total Clouds (% Sky Obscured)

0
0
0
0
0
15
31
46
57
62
74
75
78
74
78
81
79
74
65
56
74
83
94
92

Low Clouds (% Sky Obscured)

0
0
0
0
0
6
13
20
36
53
65
72
72
74
63
63
58
54
39
24
39
25
22
26

Medium Clouds (% Sky Obscured)

0
0
0
0
0
9
22
28
32
30
35
34
36
42
38
36
30
24
14
4
49
44
72
70

High Clouds (% Sky Obscured)

0
0
0
0
0
0
1
1
1
1
0
1
1
0
0
1
2
11
18
28
23
20
15
36

ISS Passover

Visibility (miles)

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

Precipitation Probability (%)

0
0
0
0
0
0
0
0
5
14
21
36
41
51
62
61
33
39
40
35
16
3
10
6

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

11
10
10
10
9
9
9
9
10
12
13
15
15
16
17
18
19
19
19
18
17
15
14
13

Feels Like (°C)

9
9
9
9
8
8
8
9
10
11
12
14
15
16
17
18
18
18
18
18
17
15
14
12

Dew Point (°C)

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

Relative Humidity (%)

80
80
77
77
77
78
78
80
78
71
68
66
62
62
62
63
63
71
72
77
82
90
95
96

Pressure (mb)

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

Ozone (du)

373
373
373
373
373
372
372
372
371
371
371
371
372
372
373
372
372
373
372
370
367
365
365
365

Friday 1

Full Moon 100%

22:03

05:14

23 Bad
00 Bad
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

Sun - Rise: 05:30, Set: 20:28, Transit: 12:59. Moon - Rise: 22:03, Set: 05:14. Civil Dark: 21:07 - 04:52. Nautical Dark: 21:58 - 04:01. Astro Dark: N/A - 02:57

Total Clouds (% Sky Obscured)

98
98
96
92
89
85
82
79
77
77
81
84
88
92
95
97
100
99
99
98
99
99
100
95

Low Clouds (% Sky Obscured)

35
47
62
74
78
79
78
78
69
70
69
65
57
49
57
64
71
48
24
0
15
31
46
48

Medium Clouds (% Sky Obscured)

82
76
79
63
56
56
48
40
10
10
32
15
33
48
47
48
43
44
57
58
45
33
26
23

High Clouds (% Sky Obscured)

63
85
73
42
14
22
28
33
28
30
49
56
63
64
71
78
83
59
32
5
22
36
56
38

ISS Passover

Visibility (miles)

9
9
9
9
9
9
6
7
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
Very Light Rain
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

6
8
18
17
12
34
50
27
7
3
0
1
1
0
11
14
11
13
16
19
19
17
11
22

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

12
11
10
11
11
10
10
10
10
9
9
9
8
8
8
8
7
7
8
9
10
10
10
10

Relative Humidity (%)

96
96
96
98
98
96
95
98
96
86
81
76
68
64
59
58
56
55
60
68
76
82
89
93

Pressure (mb)

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

Ozone (du)

365
364
364
364
364
364
366
370
373
376
381
384
386
386
385
385
385
385
385
385
385
385
386
386

Saturday 2

Waning Gibbous 98%

No Rise

05:36

23 Bad
00 Bad
01 Bad
02 Bad
03 Bad
04 Bad
05 Bad
06 Bad
07 Bad
08 Bad
09 OK
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

Sun - Rise: 05:28, Set: 20:30, Transit: 12:59. Moon - Rise: No Rise, Set: 05:36. Civil Dark: 21:09 - 04:50. Nautical Dark: 22:00 - 03:58. Astro Dark: 23:02 - 02:53

Total Clouds (% Sky Obscured)

89
84
87
90
93
89
85
77
63
43
24
42
51
53
60
69
78
75
69
65
63
58
50
53

Low Clouds (% Sky Obscured)

49
51
50
49
46
47
50
51
42
31
20
30
41
48
46
44
42
43
45
46
39
32
25
34

Medium Clouds (% Sky Obscured)

20
17
18
27
38
33
32
31
10
3
0
0
0
0
14
28
44
43
40
42
37
29
19
12

High Clouds (% Sky Obscured)

19
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
3
11
22
40
43

ISS Passover

Visibility (miles)

9
9
9
9
9
9
7
5
3
5
7
9
8
7
7
6
5
4
5
6
7
8
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
Very Light Rain
Very Light Rain
Very Light Rain
None
None
None

Precipitation Probability (%)

15
8
5
3
4
5
6
1
3
5
3
22
28
29
35
42
49
49
56
57
49
40
28
27

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

10
10
9
8
8
7
8
7
8
8
9
9
9
9
8
9
10
11
11
12
12
11
10
9

Relative Humidity (%)

95
96
96
96
96
96
98
96
98
93
90
88
79
71
63
67
72
75
78
82
86
89
90
93

Pressure (mb)

1012
1012
1012
1012
1012
1012
1012
1012
1012
1012
1013
1013
1013
1013
1012
1012
1012
1012
1012
1012
1012
1012
1013
1013

Ozone (du)

386
386
386
384
383
381
380
380
379
379
379
379
379
379
379
379
378
378
377
377
377
378
379
380

Sunday 3

Waning Gibbous 95%

23:13

06:07

23 Bad
00 Bad
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

Sun - Rise: 05:27, Set: 20:31, Transit: 12:59. Moon - Rise: 23:13, Set: 06:07. Civil Dark: 21:11 - 04:47. Nautical Dark: 22:02 - 03:56. Astro Dark: 23:05 - 02:49

Total Clouds (% Sky Obscured)

59
65
66
66
67
73
78
84
77
70
60
63
69
71
72
71
68
65
67
69

Low Clouds (% Sky Obscured)

43
50
50
49
51
56
53
52
50
44
42
43
50
61
46
26
5
6
6
10

Medium Clouds (% Sky Obscured)

7
6
7
10
13
20
21
29
21
18
7
2
2
4
11
17
24
36
41
41

High Clouds (% Sky Obscured)

45
50
32
16
3
2
1
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
8
7
8
9
9
9
8

Fog (%)

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

Precipitation Probability (%)

22
5
6
4
2
3
3
2
3
2
1
15
22
28
35
39
41
42
41
41

Precipitation Amount (mm)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

10
9
8
5
5
5
5
5
5
7
8
9
10
10
11
15
14
14
14
14

Dew Point (°C)

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

Relative Humidity (%)

95
95
94
94
96
96
94
93
91
87
81
76
71
65
61
62
65
66
71
76

Pressure (mb)

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

Ozone (du)

382
383
384
385
386
387
388
390
391
391
392
392
392
391
391
391
391
391
390
389

Forecast for Great Missenden, Buckinghamshire, United Kingdom (51.70,-0.70)

Generated: 27/04/26 23:19:58. Forecast: 27/04/26 to 03/05/26. Timezone: UTC+1.00