Clear Outside v1.0 - International Weather Forecasts For Astronomers

Saturday 12

Waning Gibbous 95%

22:54

No Set

07 Good
08 Good
09 Good
10 Good
11 Good
12 Good
13 OK
14 OK
15 OK
16 OK
17 OK
18 OK
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: 05:10, Set: 21:34, Transit: 13:22. Moon - Rise: 22:54, Set: No Set. Civil Dark: 22:21 - 04:24. Nautical Dark: 23:32 - 03:14. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

2
2
7
7
3
3
23
32
46
33
27
25
14
1
1
2
0
0
0
0
3
4
0
0

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
23
32
33
0
0
0
14
0
0
0
0
0
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
18
17
13
15
2
0
0
0
0
0
0
0
0
2
0
0

High Clouds (% Sky Obscured)

2
2
7
7
3
3
2
3
2
2
0
0
0
1
1
2
0
0
0
0
2
1
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)

5
6
7
6
5
5
4
1
1
3
3
4
4
3
2
3
4
5
6
7
8
10
10
9

Chance of Frost

Temperature (°C)

17
20
23
24
25
27
27
28
28
27
27
25
24
22
20
20
20
19
19
19
18
17
16
16

Feels Like (°C)

18
22
25
27
28
29
30
32
31
31
30
28
27
26
24
23
21
19
18
18
17
16
15
15

Dew Point (°C)

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

Relative Humidity (%)

83
77
71
66
62
59
57
54
58
60
63
71
77
83
85
84
77
63
59
60
63
68
72
77

Pressure (mb)

1017
1017
1017
1016
1016
1016
1016
1015
1015
1014
1014
1014
1014
1014
1014
1014
1014
1014
1014
1014
1013
1013
1013
1013

Ozone (du)

319
318
320
322
323
326
326
327
328
328
328
329
330
330
331
331
331
331
331
330
330
331
331
332

Sunday 13

Waning Gibbous 88%

23:09

07:51

07 Good
08 Good
09 Good
10 Good
11 Good
12 Good
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 OK
03 Bad
04 Bad
05 Bad
06 Bad

Sun - Rise: 05:12, Set: 21:33, Transit: 13:22. Moon - Rise: 23:09, Set: 07:51. Civil Dark: 22:20 - 04:25. Nautical Dark: 23:30 - 03:16. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

0
0
0
0
2
2
41
57
43
33
53
100
100
100
100
100
100
99
37
38
71
89
90
93

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
37
33
0
0
5
29
0
16
0
0
0
0
1
0
60
87
68
86

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
6
3
3
15
7
39
56
45
50
85
71
26
23
22
53
45
38

High Clouds (% Sky Obscured)

0
0
0
0
1
2
2
8
4
33
40
100
100
100
100
100
100
95
0
0
0
0
0
0

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
3
7
7
7
9
9
9
9
3
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
Light Rain
Very Light Rain
Very Light Rain
Very Light Rain
Light Rain
None
None
None
Very Light Rain
Light Rain
None
None
None
None
None
None
Very Light Rain

Precipitation Probability (%)

0
0
0
0
0
0
27
66
64
55
59
71
37
4
24
62
59
34
11
0
4
19
30
42

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

17
19
21
22
24
25
26
26
24
25
25
25
23
22
21
20
19
18
17
16
16
15
15
16

Feels Like (°C)

16
19
22
22
23
25
26
27
25
26
27
27
25
23
22
21
19
18
17
17
17
16
15
15

Dew Point (°C)

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

Relative Humidity (%)

76
71
64
61
61
62
60
59
76
77
77
76
79
80
81
81
88
95
96
93
90
90
90
93

Pressure (mb)

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

Ozone (du)

332
331
331
332
330
326
327
326
327
327
324
323
322
325
329
329
334
342
346
347
342
339
337
337

Monday 14

Waning Gibbous 80%

23:21

09:15

07 Bad
08 Bad
09 Bad
10 Bad
11 Bad
12 Bad
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
06 Bad

Sun - Rise: 05:13, Set: 21:32, Transit: 13:22. Moon - Rise: 23:21, Set: 09:15. Civil Dark: 22:18 - 04:27. Nautical Dark: 23:28 - 03:18. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

79
61
54
71
62
35
17
7
10
7
9
6
6
6
6
90
16
10
13
24
99
36
98
100

Low Clouds (% Sky Obscured)

68
45
54
57
58
35
17
7
10
7
9
6
6
6
6
46
16
10
13
24
59
36
57
58

Medium Clouds (% Sky Obscured)

0
51
23
34
0
0
0
0
10
7
9
6
6
6
6
72
16
10
13
24
73
32
40
100

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
4
6
8
17
35
71
100

ISS Passover

Visibility (miles)

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

Precipitation Probability (%)

29
18
14
58
59
39
25
18
27
35
33
48
47
54
54
62
60
59
45
43
48
48
52
54

Precipitation Amount (mm)

0
0
0
0.4
0.4
0
0
0
0
0.2
0
0.3
0.3
0.4
0.3
0.4
0.4
0.4
0.2
0
0.3
0.2
0.3
0.3

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

16
16
17
18
18
17
17
17
17
17
16
16
15
14
14
13
13
12
12
12
13
13
13
13

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

96
93
85
78
81
83
82
76
71
75
78
75
80
83
86
87
89
87
87
89
89
89
89
90

Pressure (mb)

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

Ozone (du)

336
336
336
338
340
341
343
345
348
351
355
358
369
375
374
374
373
373
366
363
364
361
356
357

Tuesday 15

Waning Gibbous 70%

23:31

10:39

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
06 Bad

Sun - Rise: 05:14, Set: 21:31, Transit: 13:22. Moon - Rise: 23:31, Set: 10:39. Civil Dark: 22:17 - 04:28. Nautical Dark: 23:26 - 03:20. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

99
100
100
100
100
98
80
95
99
83
95
94
94
92
91
88
91
91
93
95
97
98
99
100

Low Clouds (% Sky Obscured)

69
71
73
64
61
72
58
61
81
65
47
37
27
17
16
34
35
41
34
27
25
25
25
35

Medium Clouds (% Sky Obscured)

97
100
100
100
100
98
80
72
77
46
33
28
11
30
35
40
40
45
42
50
61
44
70
70

High Clouds (% Sky Obscured)

95
90
80
50
25
20
7
37
55
44
54
52
60
58
61
49
57
55
66
81
92
95
95
64

ISS Passover

Visibility (miles)

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

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

Precipitation Probability (%)

68
72
72
79
90
95
95
95
95
95
84
68
55
42
48
64
69
53
56
59
56
48
39
34

Precipitation Amount (mm)

0.4
0.6
0.6
0.6
0.7
1
0.7
0.8
1.3
1
0.7
0.6
0.3
0
0.2
0.5
0.5
0.2
0.2
0.3
0.3
0.2
0
0

Wind Speed/Direction (mph)

18
17
17
17
16
16
16
16
16
16
12
9
7
7
7
5
3
3
3
2
6
9
8
7

Chance of Frost

Temperature (°C)

14
14
14
15
15
15
16
16
16
16
16
16
16
16
15
15
15
15
15
16
16
16
16
16

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

87
89
87
86
87
85
82
78
75
82
77
79
81
82
86
96
98
98
98
98
100
98
98
100

Pressure (mb)

1014
1014
1014
1014
1014
1014
1014
1014
1014
1014
1014
1014
1014
1014
1015
1015
1015
1015
1014
1014
1014
1014
1014
1014

Ozone (du)

354
349
349
346
344
340
336
333
331
331
328
327
326
325
325
318
317
314
315
313
312
313
310
305

Wednesday 16

Waning Gibbous 59%

23:42

12:02

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
06 Bad

Sun - Rise: 05:15, Set: 21:30, Transit: 13:22. Moon - Rise: 23:42, Set: 12:02. Civil Dark: 22:16 - 04:30. Nautical Dark: 23:24 - 03:23. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

100
100
100
99
99
98
99
99
100
100
99
99
99
98
98
99
99
100
99
100
100
100
100
100

Low Clouds (% Sky Obscured)

35
30
25
20
15
15
22
38
47
60
72
85
95
91
88
91
94
96
95
95
94
95
96
96

Medium Clouds (% Sky Obscured)

75
80
80
70
57
35
52
65
73
74
47
45
29
28
26
27
28
33
28
27
16
21
29
40

High Clouds (% Sky Obscured)

100
100
100
97
79
88
86
96
100
73
45
4
7
11
22
54
72
91
65
41
23
28
27
23

ISS Passover

Visibility (miles)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
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
Light Rain
Very Light Rain
None
Very Light Rain
None
Very Light Rain
Very Light Rain
Light Rain
Light Rain
Very Light Rain
Very Light Rain
Very Light Rain
Very Light Rain
Very Light Rain
Very Light Rain
Light Rain
Light Rain

Precipitation Probability (%)

32
33
28
35
39
35
45
71
66
45
40
35
60
55
66
69
64
64
59
57
58
51
57
62

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

16
16
17
17
18
18
19
19
19
19
19
19
18
18
18
18
18
18
18
17
17
17
17
16

Feels Like (°C)

15
16
16
16
17
17
18
18
18
18
17
17
17
17
17
17
17
17
16
16
16
16
16
16

Dew Point (°C)

16
16
17
17
18
18
19
19
19
19
19
19
18
18
18
18
18
18
18
17
17
17
17
16

Relative Humidity (%)

100
100
98
98
98
98
100
100
100
100
98
100
100
100
98
100
100
100
100
100
100
100
100
98

Pressure (mb)

1014
1015
1015
1015
1015
1015
1015
1015
1015
1015
1015
1015
1015
1012
1012
1012
1012
1012
1012
1011
1011
1011
1011
1011

Ozone (du)

307
304
305
307
307
309
312
319
318
318
322
326
328
327
326
325
325
325
325
326
326
327
327
328

Thursday 17

Waning Gibbous 56%

23:54

13:28

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 OK
03 OK
04 Bad
05 Bad
06 Bad

Sun - Rise: 05:17, Set: 21:29, Transit: 13:22. Moon - Rise: 23:54, Set: 13:28. Civil Dark: 22:14 - 04:31. Nautical Dark: 23:21 - 03:25. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

100
100
98
96
94
92
94
97
100
94
87
81
80
77
76
70
65
60
43
26
9
30
51
72

Low Clouds (% Sky Obscured)

96
97
97
94
92
89
81
75
66
61
55
48
35
21
8
20
33
48
35
21
7
25
42
59

Medium Clouds (% Sky Obscured)

32
31
27
18
11
1
0
0
0
22
37
35
32
25
23
13
6
0
2
4
5
5
5
5

High Clouds (% Sky Obscured)

25
22
22
21
19
20
43
72
100
94
87
81
80
77
76
67
41
15
13
9
2
9
14
16

ISS Passover

Visibility (miles)

0
2
5
7
8
8
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

Very Light Rain
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 (%)

53
43
41
29
21
26
20
16
14
11
11
11
12
16
20
18
17
18
17
15
16
12
13
19

Precipitation Amount (mm)

0.3
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
11
12
11
12
12
11
10
10
9
8
8
8
8
8
7
7
7
6
6
5
5
5

Chance of Frost

Temperature (°C)

16
16
16
16
16
16
16
16
16
17
17
17
17
16
15
15
15
15
15
15
15
14
15
15

Feels Like (°C)

16
15
16
16
16
15
15
16
16
16
16
16
16
16
15
14
14
15
15
14
14
14
14
14

Dew Point (°C)

16
15
15
15
15
14
14
14
14
14
14
14
14
14
14
14
14
14
13
13
13
13
13
13

Relative Humidity (%)

98
96
95
95
93
90
89
87
87
85
85
85
85
87
89
93
92
90
89
92
92
92
92
92

Pressure (mb)

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

Ozone (du)

329
329
329
330
328
327
325
325
325
325
326
328
330
331
332
333
334
336
337
337
338
338
339
340

Friday 18

Third Quarter 47%

00:09

14:56

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

Sun - Rise: 05:18, Set: 21:28, Transit: 13:22. Moon - Rise: 00:09, Set: 14:56. Civil Dark: 22:13 - 04:33. Nautical Dark: 23:19 - 03:28. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

81
91
100
100
95
90
80
79
79
86
88
100
100
100
100
100
99
99

Low Clouds (% Sky Obscured)

67
72
80
80
70
60
49
52
60
51
42
30
38
46
55
60
66
72

Medium Clouds (% Sky Obscured)

3
2
0
0
0
0
0
0
0
0
0
0
4
9
17
24
34
43

High Clouds (% Sky Obscured)

13
13
14
9
5
0
2
6
8
40
69
100
100
100
100
96
92
85

ISS Passover

Visibility (miles)

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

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 (%)

16
20
32
23
23
28
18
16
15
7
9
3
2
0
0
3
12
28

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)

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

Chance of Frost

Temperature (°C)

15
16
16
18
18
19
19
19
20
20
19
19
18
18
17
16
16
16

Feels Like (°C)

14
15
15
16
16
17
17
17
17
16
16
16
15
15
14
14
14
14

Dew Point (°C)

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

Relative Humidity (%)

92
93
93
93
92
89
86
85
84
80
81
80
80
79
78
78
83
87

Pressure (mb)

1015
1015
1015
1015
1015
1015
1015
1015
1015
1015
1015
1014
1014
1014
1014
1014
1014
1014

Ozone (du)

341
343
344
345
344
344
343
342
341
341
340
340
339
340
340
341
341
341

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

Generated: 12/07/25 06:12:27. Forecast: 12/07/25 to 18/07/25. Timezone: UTC+1.00