Clear Outside v1.0 - International Weather Forecasts For Astronomers

Monday 27

Waxing Gibbous 86%

17:19

04:35

20 OK
21 OK
22 OK
23 OK
00 Good
01 Good
02 Good
03 OK
04 OK
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

Sun - Rise: 05:49, Set: 20:36, Transit: 13:13. Moon - Rise: 17:19, Set: 04:35. Civil Dark: 21:14 - 05:10. Nautical Dark: 22:04 - 04:20. Astro Dark: 23:06 - 03:18

Total Clouds (% Sky Obscured)

41
36
32
18
1
0
0
14
22
65
67
78
80
84
95
80
87
89
79
74
70
29
14
0

Low Clouds (% Sky Obscured)

0
0
7
0
0
0
0
14
22
30
34
56
60
67
88
51
68
68
57
48
33
29
14
0

Medium Clouds (% Sky Obscured)

0
0
7
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
0
0
0
0
0
0
0
0

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
7
8
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
3
6
19
21
15
3
7
6
5
3
1
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)

12
9
6
5
6
6
6
6
7
9
10
10
12
15
17
16
15
16
16
16
16
16
16
16

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

79
83
87
88
90
90
91
91
91
88
78
81
84
85
82
78
78
75
75
70
65
63
66
69

Pressure (mb)

1025
1026
1026
1026
1026
1026
1026
1026
1026
1026
1026
1027
1027
1027
1028
1028
1028
1027
1027
1027
1026
1026
1026
1026

Ozone (du)

398
405
411
415
416
417
416
415
415
413
412
412
410
408
407
408
409
408
406
403
402
401
401
400

Tuesday 28

Waxing Gibbous 93%

18:34

04:45

20 Good
21 Good
22 Good
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 Bad
15 Bad
16 Bad
17 Bad
18 Bad
19 Bad

Sun - Rise: 05:47, Set: 20:37, Transit: 13:13. Moon - Rise: 18:34, Set: 04:45. Civil Dark: 21:16 - 05:08. Nautical Dark: 22:06 - 04:18. Astro Dark: 23:09 - 03:14

Total Clouds (% Sky Obscured)

0
0
0
0
0
0
0
2
0
1
2
0
0
0
0
0
0
0
48
95
90
71
100
58

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)

0
0
0
0
0
0
0
2
0
1
2
0
0
0
0
0
0
0
32
50
50
56
100
58

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
18
19
19
19
19
18
17
17
17
18
20
23
24
26
26
26
26
26
27
28
28
28

Chance of Frost

Temperature (°C)

12
11
10
9
8
8
7
7
7
7
7
7
8
9
11
13
15
16
17
17
17
17
16
14

Feels Like (°C)

8
6
5
4
3
3
2
2
2
2
2
2
3
4
6
7
8
11
11
13
12
11
10
7

Dew Point (°C)

7
6
5
3
2
1
0
0
-0
0
1
2
3
4
5
6
7
7
7
8
8
8
8
7

Relative Humidity (%)

71
71
72
68
65
61
59
61
62
63
67
70
69
67
64
61
58
54
53
54
55
57
59
61

Pressure (mb)

1026
1027
1027
1027
1026
1026
1026
1026
1026
1026
1026
1025
1025
1025
1025
1025
1024
1023
1023
1022
1022
1021
1021
1021

Ozone (du)

399
399
400
401
401
401
401
402
401
400
401
403
403
403
404
404
406
407
405
405
406
400
394
392

Wednesday 29

Waxing Gibbous 97%

19:50

04:55

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

Sun - Rise: 05:45, Set: 20:39, Transit: 13:13. Moon - Rise: 19:50, Set: 04:55. Civil Dark: 21:18 - 05:06. Nautical Dark: 22:09 - 04:15. Astro Dark: 23:13 - 03:10

Total Clouds (% Sky Obscured)

47
79
80
48
71
32
31
19
13
7
8
16
17
15
13
15
12
13
17
65
67
100
100
94

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
1
2
1

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
4
22

High Clouds (% Sky Obscured)

47
79
80
48
71
29
25
11
6
4
7
16
17
15
13
15
6
13
17
65
67
98
97
69

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)

28
29
29
27
26
25
23
22
20
20
19
19
20
21
24
25
26
25
24
22
20
18
16
14

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

6
4
3
3
4
4
4
3
4
3
3
3
4
6
7
9
10
12
13
14
14
14
13
12

Dew Point (°C)

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

Relative Humidity (%)

61
62
63
62
63
65
66
68
70
70
72
72
68
65
62
58
57
56
55
55
56
59
62
63

Pressure (mb)

1021
1022
1022
1022
1022
1022
1022
1022
1021
1021
1021
1021
1021
1021
1021
1020
1020
1019
1019
1019
1018
1018
1019
1019

Ozone (du)

392
391
391
389
387
387
385
386
386
386
385
385
385
384
381
379
378
378
376
373
371
368
367
366

Thursday 30

Waxing Gibbous 99%

No Rise

05:08

20 Bad
21 Bad
22 Bad
23 Bad
00 Bad
01 Bad
02 Bad
03 OK
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

Sun - Rise: 05:43, Set: 20:41, Transit: 13:13. Moon - Rise: No Rise, Set: 05:08. Civil Dark: 21:20 - 05:04. Nautical Dark: 22:11 - 04:12. Astro Dark: 23:16 - 03:06

Total Clouds (% Sky Obscured)

88
82
53
73
77
90
67
39
92
77
72
88
98
100
100
100
100
100
100
97
91
79
99
100

Low Clouds (% Sky Obscured)

1
1
1
9
14
1
1
3
13
13
7
28
50
63
67
69
73
75
77
78
54
52
43
46

Medium Clouds (% Sky Obscured)

24
26
26
40
40
45
9
4
12
21
27
50
80
91
100
99
99
98
94
78
80
40
99
85

High Clouds (% Sky Obscured)

43
25
13
12
12
14
37
23
59
18
14
20
13
31
42
78
100
93
85
70
74
74
61
100

ISS Passover

Visibility (miles)

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

Precipitation Probability (%)

0
0
0
0
0
0
0
0
0
2
7
19
28
29
39
55
69
75
86
95
95
95
61
44

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.3
0.5
0.4
0.6
0.8
0.9
0.7
0
0

Wind Speed/Direction (mph)

13
12
12
10
9
9
8
8
8
8
8
7
5
3
2
2
2
2
2
3
4
3
3
3

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

66
62
61
63
66
75
77
79
79
77
77
79
74
79
84
84
84
83
84
82
82
74
76
83

Pressure (mb)

1019
1020
1020
1020
1020
1020
1020
1019
1019
1019
1019
1019
1019
1019
1019
1019
1019
1019
1019
1018
1018
1018
1018
1018

Ozone (du)

366
367
369
370
369
366
365
366
366
364
363
362
362
362
363
362
362
362
362
362
362
362
361
362

Friday 1

Full Moon 100%

21:06

05:24

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
10 Bad
11 Bad
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad
17 Bad
18 OK
19 OK

Sun - Rise: 05:41, Set: 20:42, Transit: 13:13. Moon - Rise: 21:06, Set: 05:24. Civil Dark: 21:22 - 05:02. Nautical Dark: 22:14 - 04:10. Astro Dark: 23:20 - 03:02

Total Clouds (% Sky Obscured)

100
100
100
100
100
97
100
100
99
99
99
96
92
89
91
94
94
83
61
46
36
26
16
16

Low Clouds (% Sky Obscured)

58
58
67
71
74
80
76
68
74
80
86
63
67
70
70
68
67
63
55
46
36
26
16
16

Medium Clouds (% Sky Obscured)

20
20
27
27
27
23
17
33
5
3
32
79
76
73
61
49
38
41
45
41
27
14
3
7

High Clouds (% Sky Obscured)

100
100
100
100
100
97
98
98
65
50
31
35
45
49
45
58
74
73
61
46
36
20
2
2

ISS Passover

Visibility (miles)

9
9
9
9
9
7
7
9
9
8
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

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

Precipitation Probability (%)

20
6
2
0
0
2
6
13
16
17
22
31
32
36
39
46
58
52
61
44
39
32
18
18

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.3
0
0.3
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

10
10
10
9
9
9
10
10
10
10
10
10
10
10
10
10
10
9
9
9
9
9
9
9

Relative Humidity (%)

92
93
95
95
95
95
96
95
91
93
93
93
92
89
87
84
83
80
79
77
76
80
83
84

Pressure (mb)

1018
1018
1018
1017
1017
1017
1016
1016
1016
1015
1015
1015
1015
1015
1015
1015
1015
1015
1015
1014
1014
1014
1014
1014

Ozone (du)

365
368
369
371
376
381
383
386
391
392
392
391
391
391
391
389
387
385
385
384
384
382
381
380

Saturday 2

Waning Gibbous 98%

22:21

05:46

20 OK
21 OK
22 OK
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 OK
13 OK
14 Good
15 Good
16 Good
17 Good
18 Good
19 Good

Sun - Rise: 05:40, Set: 20:44, Transit: 13:13. Moon - Rise: 22:21, Set: 05:46. Civil Dark: 21:24 - 05:00. Nautical Dark: 22:16 - 04:07. Astro Dark: 23:24 - 02:58

Total Clouds (% Sky Obscured)

15
27
39
51
63
73
83
93
93
93
92
83
77
68
55
38
22
15
7
0
0
0
0
0

Low Clouds (% Sky Obscured)

15
14
26
38
49
61
75
87
93
92
91
81
67
51
39
26
13
10
5
0
0
0
0
0

Medium Clouds (% Sky Obscured)

15
27
31
35
37
48
51
53
47
45
53
38
23
6
6
6
10
9
5
0
0
0
0
0

High Clouds (% Sky Obscured)

2
1
1
1
0
3
6
14
12
8
1
0
0
0
0
0
0
0
0
0
0
0
0
0

ISS Passover

Visibility (miles)

9
9
9
9
9
9
8
7
6
5
5
5
7
8
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 (%)

11
8
6
4
1
7
10
11
12
14
16
22
24
24
23
20
14
12
7
3
5
4
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

9
8
8
8
8
8
8
9
9
9
9
9
9
9
9
8
8
7
8
8
8
8
8
7

Relative Humidity (%)

88
91
96
95
95
93
93
95
96
96
95
96
90
86
81
77
75
70
71
70
70
72
72
73

Pressure (mb)

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

Ozone (du)

380
380
380
380
379
379
382
385
388
389
390
390
390
390
390
389
387
386
384
383
382
382
383
384

Sunday 3

Waning Gibbous 95%

23:33

06:16

20 Good
21 Good
22 Good
23 Good
00 Good
01 Good
02 Good
03 Good
04 Good
05 Good
06 Good
07 Good
08 OK
09 OK
10 OK
11 Bad
12 Bad

Sun - Rise: 05:38, Set: 20:46, Transit: 13:13. Moon - Rise: 23:33, Set: 06:16. Civil Dark: 21:26 - 04:58. Nautical Dark: 22:18 - 04:04. Astro Dark: 23:28 - 02:53

Total Clouds (% Sky Obscured)

0
0
0
1
4
6
4
2
3
4
5
15
25
35
40
54
68

Low Clouds (% Sky Obscured)

0
0
0
1
4
4
2
0
0
0
0
11
19
26
38
49
61

Medium Clouds (% Sky Obscured)

0
0
0
1
4
6
4
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
1
1
1
1
2
3
3
2
2
1

ISS Passover

Visibility (miles)

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

Precipitation Type

None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

1
0
0
0
0
0
0
0
0
0
0
0
0
0
1
2
0

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

11
11
12
12
11
11
8
8
7
7
7
6
8
8
8
8
8

Dew Point (°C)

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

Relative Humidity (%)

77
81
87
88
90
91
91
90
91
88
88
85
78
73
67
66
65

Pressure (mb)

1016
1016
1016
1016
1016
1016
1016
1016
1016
1016
1016
1016
1016
1016
1016
1016
1016

Ozone (du)

384
384
385
384
384
384
384
384
384
384
384
384
385
385
386
386
386

Forecast for Aberystwyth, Ceredigion, United Kingdom (52.42,-4.08)

Generated: 27/04/26 20:51:40. Forecast: 27/04/26 to 03/05/26. Timezone: UTC+1.00