Clear Outside v1.0 - International Weather Forecasts For Astronomers

Monday 20

Waxing Crescent 14%

07:56

01:27

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

Sun - Rise: 06:04, Set: 20:23, Transit: 13:15. Moon - Rise: 07:56, Set: 01:27. Civil Dark: 21:01 - 05:26. Nautical Dark: 21:48 - 04:39. Astro Dark: 22:43 - 03:43

Total Clouds (% Sky Obscured)

81
85
88
87
85
71
65
27
7
5
4
4
2
0
0
33
60
72
64
59
77
100
100
92

Low Clouds (% Sky Obscured)

35
81
73
49
36
5
0
0
0
0
0
0
0
0
0
31
46
31
25
29
47
52
21
34

Medium Clouds (% Sky Obscured)

32
27
29
33
25
19
18
14
1
2
0
0
0
0
0
0
0
0
0
0
0
0
0
13

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
63
100
100
79

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
7
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
1
2
31
23
22
5
2
1
1
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
1
1
4
4
3
3
5
6
7
9
10
10
10
11
11
12
11
13
15
19
19
18

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

11
9
9
9
9
9
9
8
7
5
5
5
3
3
3
2
1
1
0
1
2
2
3
5

Dew Point (°C)

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

Relative Humidity (%)

56
63
68
71
75
76
76
77
82
85
85
87
90
90
90
91
90
88
83
82
75
67
61
59

Pressure (mb)

1024
1024
1023
1023
1023
1023
1023
1024
1024
1025
1025
1026
1026
1026
1026
1026
1026
1027
1027
1027
1027
1027
1027
1027

Ozone (du)

409
410
410
409
409
409
411
415
421
423
423
420
419
417
415
414
411
408
407
406
406
406
405
404

Tuesday 21

Waxing Crescent 24%

09:07

02:30

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

Sun - Rise: 06:02, Set: 20:25, Transit: 13:14. Moon - Rise: 09:07, Set: 02:30. Civil Dark: 21:03 - 05:24. Nautical Dark: 21:50 - 04:36. Astro Dark: 22:46 - 03:39

Total Clouds (% Sky Obscured)

71
99
71
35
29
13
18
43
7
22
36
62
62
65
42
60
79
31
8
8
13
13
33
79

Low Clouds (% Sky Obscured)

20
25
38
22
7
0
0
0
0
0
0
0
0
0
0
0
6
6
7
0
0
0
0
0

Medium Clouds (% Sky Obscured)

15
20
20
17
17
6
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

48
95
22
9
1
5
16
32
7
19
31
52
52
55
32
38
51
19
3
8
13
13
33
79

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
1
1
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

5
6
7
8
9
6
6
3
3
1
1
1
0
0
1
0
0
1
1
2
2
3
5
6

Dew Point (°C)

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

Relative Humidity (%)

61
61
56
55
62
60
60
62
64
64
64
65
66
68
71
75
78
82
82
78
74
70
64
60

Pressure (mb)

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

Ozone (du)

401
399
397
396
394
390
390
390
391
392
393
392
391
389
389
389
387
383
378
375
373
371
369
369

Wednesday 22

Waxing Crescent 35%

10:31

03:13

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

Sun - Rise: 05:59, Set: 20:27, Transit: 13:14. Moon - Rise: 10:31, Set: 03:13. Civil Dark: 21:04 - 05:22. Nautical Dark: 21:52 - 04:34. Astro Dark: 22:49 - 03:36

Total Clouds (% Sky Obscured)

79
100
85
63
70
98
100
100
100
100
91
36
36
15
13
6
3
0
0
0
0
0
0
0

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

0
0
0
0
0
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

71
100
85
63
67
97
100
100
100
100
91
29
25
15
8
4
1
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)

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

Chance of Frost

Temperature (°C)

13
14
15
15
15
14
13
12
11
10
9
8
7
6
6
5
5
4
4
6
8
10
12
13

Feels Like (°C)

8
9
9
9
10
10
9
9
7
6
5
3
2
2
2
2
2
1
2
3
5
8
10
11

Dew Point (°C)

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

Relative Humidity (%)

57
56
56
57
63
65
68
71
75
82
77
75
74
72
74
75
78
83
86
75
65
57
54
51

Pressure (mb)

1028
1028
1027
1027
1027
1027
1027
1028
1029
1029
1029
1030
1030
1030
1031
1031
1031
1031
1032
1032
1032
1032
1032
1032

Ozone (du)

367
367
366
367
367
366
366
366
366
366
367
366
366
365
367
368
369
371
371
372
375
375
376
379

Thursday 23

Waxing Crescent 46%

11:59

03:41

13 Good
14 Good
15 Good
16 Good
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
06 Good
07 Good
08 Good
09 Good
10 Good
11 Good
12 Good

Sun - Rise: 05:57, Set: 20:29, Transit: 13:14. Moon - Rise: 11:59, Set: 03:41. Civil Dark: 21:06 - 05:19. Nautical Dark: 21:55 - 04:31. Astro Dark: 22:52 - 03:32

Total 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
3
1

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
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
3
1

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)

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

Chance of Frost

Temperature (°C)

15
15
16
16
16
16
15
12
10
9
9
8
8
7
6
5
5
5
5
8
10
12
14
15

Feels Like (°C)

11
13
13
14
14
14
13
12
9
8
7
7
6
5
5
4
3
3
3
6
9
11
12
13

Dew Point (°C)

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

Relative Humidity (%)

51
50
50
52
56
61
67
73
80
82
81
78
81
87
88
88
88
86
79
71
58
49
44
42

Pressure (mb)

1031
1031
1030
1030
1030
1030
1030
1030
1030
1030
1030
1030
1030
1030
1030
1030
1030
1030
1030
1030
1030
1030
1030
1029

Ozone (du)

377
374
373
373
372
372
371
370
370
369
368
369
369
369
370
370
370
370
371
373
372
369
367
368

Friday 24

First Quarter 58%

No Rise

04:00

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

Sun - Rise: 05:55, Set: 20:30, Transit: 13:14. Moon - Rise: No Rise, Set: 04:00. Civil Dark: 21:08 - 05:17. Nautical Dark: 21:57 - 04:28. Astro Dark: 22:55 - 03:29

Total Clouds (% Sky Obscured)

0
0
0
0
0
0
1
2
2
1
1
2
11
21
31
46
61
77
83
89
92
72
55
39

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
11
21
31
44
30
25
16
9
9
8
6
6

High Clouds (% Sky Obscured)

0
0
0
0
0
0
1
2
2
1
1
0
11
21
31
45
47
49
46
44
45
12
3
2

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)

5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
4
2
1
2
4

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

14
15
16
16
16
15
15
13
10
9
8
8
7
7
7
6
6
6
6
5
6
6
7
8

Dew Point (°C)

3
4
5
5
6
8
9
7
6
6
6
6
5
5
4
2
2
1
1
1
2
2
3
4

Relative Humidity (%)

42
42
44
45
50
57
64
68
71
76
77
81
82
79
75
71
68
65
62
56
51
47
47
49

Pressure (mb)

1029
1028
1028
1028
1028
1027
1027
1028
1028
1029
1029
1029
1029
1028
1028
1028
1028
1028
1028
1028
1028
1028
1028
1027

Ozone (du)

369
369
367
365
363
363
363
362
361
362
362
361
361
360
359
358
358
358
357
357
356
356
356
356

Saturday 25

Waxing Gibbous 69%

13:24

04:14

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

Sun - Rise: 05:53, Set: 20:32, Transit: 13:14. Moon - Rise: 13:24, Set: 04:14. Civil Dark: 21:10 - 05:15. Nautical Dark: 21:59 - 04:26. Astro Dark: 22:59 - 03:25

Total Clouds (% Sky Obscured)

42
45
47
52
57
60
45
30
19
48
73
98
96
94
89
78
57
44
31
48
70
80
90
100

Low Clouds (% Sky Obscured)

13
26
39
36
33
29
18
9
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

3
3
3
4
5
6
8
10
14
40
67
93
68
39
10
16
22
24
13
9
8
12
15
17

High Clouds (% Sky Obscured)

2
4
2
2
5
6
8
5
2
34
66
98
96
94
89
78
57
44
31
32
10
13
16
19

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)

6
6
6
6
5
3
2
1
2
3
4
4
5
5
4
4
4
5
5
4
4
4
4
3

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

49
52
57
61
65
69
72
75
77
80
80
81
81
82
82
84
82
84
82
74
67
60
61
60

Pressure (mb)

1027
1027
1027
1026
1026
1026
1025
1026
1026
1026
1026
1026
1026
1026
1026
1026
1026
1026
1026
1026
1026
1026
1026
1026

Ozone (du)

357
358
360
362
365
367
369
371
373
375
374
374
374
376
378
380
378
377
376
375
375
374
374
374

Sunday 26

Waxing Gibbous 78%

14:45

04:25

13 Bad
14 Bad
15 Bad
16 OK
17 OK
18 Good
19 Good
20 Good
21 Good
22 Good
23 Good
00 Good
01 Good
02 Good
03 Good
04 Good
05 Good
06 Good

Sun - Rise: 05:51, Set: 20:34, Transit: 13:14. Moon - Rise: 14:45, Set: 04:25. Civil Dark: 21:12 - 05:13. Nautical Dark: 22:02 - 04:23. Astro Dark: 23:02 - 03:21

Total Clouds (% Sky Obscured)

89
78
68
47
29
4
4
2
2
4
7
9
9
7
3
2
1
1

Low Clouds (% Sky Obscured)

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

Medium Clouds (% Sky Obscured)

10
4
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

40
65
68
47
29
0
0
0
0
2
4
5
5
5
3
2
1
1

ISS Passover

Visibility (miles)

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

Precipitation Type

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

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

3
4
5
6
5
5
4
2
1
3
4
4
4
4
4
4
5
5

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

59
62
64
67
70
72
76
79
83
87
87
85
85
87
87
87
87
87

Pressure (mb)

1026
1026
1026
1026
1026
1025
1025
1026
1026
1026
1026
1026
1027
1027
1027
1027
1027
1027

Ozone (du)

374
376
378
380
379
378
377
377
377
376
376
375
375
373
372
370
369
368

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

Generated: 20/04/26 13:51:32. Forecast: 20/04/26 to 26/04/26. Timezone: UTC+1.00