Clear Outside v1.0 - International Weather Forecasts For Astronomers

Monday 31

Waning Gibbous 83%

20:46

11:54

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
07 Bad
08 Bad
09 Bad
10 Bad
11 Bad
12 Bad
13 Bad
14 Bad
15 Bad

Sun - Rise: 06:28, Set: 20:06, Transit: 13:16. Moon - Rise: 20:46, Set: 11:54. Civil Dark: 20:41 - 05:52. Nautical Dark: 21:25 - 05:09. Astro Dark: 22:15 - 04:20

Total Clouds (% Sky Obscured)

100
100
100
100
95
94
97
62
63
50
55
60
57
93
65
81
70
96
48
35
100
100
100
100

Low Clouds (% Sky Obscured)

37
19
25
20
0
11
34
15
14
29
20
30
27
25
22
34
52
59
32
9
16
17
14
18

Medium Clouds (% Sky Obscured)

84
93
60
34
87
94
95
26
51
19
20
23
14
12
10
14
11
9
5
10
10
10
20
19

High Clouds (% Sky Obscured)

100
100
100
100
75
68
22
0
0
2
1
2
3
67
65
74
8
41
2
35
100
100
100
100

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
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
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

2
1
3
3
0
1
13
1
12
1
8
10
16
16
13
12
19
31
28
26
30
27
28
36

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

Chance of Frost

Temperature (°C)

17
16
16
16
15
15
15
15
15
15
14
14
14
14
14
14
15
16
17
17
18
18
18
18

Feels Like (°C)

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

Dew Point (°C)

12
12
12
12
12
12
12
12
13
12
12
12
12
12
12
13
14
14
14
14
13
13
13
13

Relative Humidity (%)

75
73
74
77
79
79
79
83
86
86
84
84
86
86
90
92
90
85
83
79
76
73
74
74

Pressure (mb)

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

Ozone (du)

320
320
320
320
319
319
318
317
316
317
318
318
317
317
319
321
321
321
320
320
318
318
320
320

Tuesday 1

Waning Gibbous 74%

21:02

13:21

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
07 Bad
08 Bad
09 Bad
10 Bad
11 Bad
12 Bad
13 Bad
14 Bad
15 Bad

Sun - Rise: 06:30, Set: 20:03, Transit: 13:15. Moon - Rise: 21:02, Set: 13:21. Civil Dark: 20:39 - 05:54. Nautical Dark: 21:23 - 05:11. Astro Dark: 22:12 - 04:22

Total Clouds (% Sky Obscured)

100
96
90
86
82
82
100
100
95
100
100
100
100
100
100
100
100
100
100
100
97
98
97
95

Low Clouds (% Sky Obscured)

21
22
21
22
23
22
35
73
69
80
77
73
77
68
63
94
86
95
100
97
94
97
94
91

Medium Clouds (% Sky Obscured)

100
96
90
86
82
82
90
82
42
30
19
21
93
96
66
100
100
100
90
58
13
12
11
10

High Clouds (% Sky Obscured)

100
35
35
35
35
40
70
70
62
100
99
100
98
100
100
78
27
3
1
1
10
40
25
8

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
8
9
9
9
9
9
9
9
9
9
7
9
2

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
Light Rain
Light Rain
Light Rain
Very Light Rain
Light Rain
Light Rain
Very Light Rain
Very Light Rain
Very Light Rain

Precipitation Probability (%)

32
20
5
12
23
41
41
29
27
34
37
25
35
40
52
69
78
95
70
65
73
62
49
52

Precipitation Amount (mm)

0
0
0
0
0
0.2
0
0
0
0
0
0
0
0
0.3
0.4
0.4
1.3
0.3
0.5
0.7
0.3
0.2
0.3

Wind Speed/Direction (mph)

14
13
13
11
12
11
11
11
9
9
9
9
7
7
7
7
8
9
8
12
17
17
17
17

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

74
76
78
82
87
90
90
93
93
93
93
95
93
92
93
92
92
90
86
92
88
89
92
96

Pressure (mb)

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

Ozone (du)

319
320
321
321
321
323
323
319
314
311
311
309
309
308
305
303
302
302
301
300
300
299
297
298

Wednesday 2

Waning Gibbous 63%

21:23

14:49

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
07 Bad
08 Bad
09 Bad
10 Bad
11 Bad
12 Bad
13 Bad
14 Bad
15 Bad

Sun - Rise: 06:31, Set: 20:01, Transit: 13:15. Moon - Rise: 21:23, Set: 14:49. Civil Dark: 20:37 - 05:56. Nautical Dark: 21:20 - 05:13. Astro Dark: 22:08 - 04:25

Total Clouds (% Sky Obscured)

72
89
70
81
86
88
95
94
93
94
95
81
82
85
94
90
93
100
98
100
100
100
100
100

Low Clouds (% Sky Obscured)

58
41
45
71
79
81
88
84
81
83
83
60
58
54
76
50
76
86
83
79
92
95
97
100

Medium Clouds (% Sky Obscured)

3
5
6
7
9
5
5
7
9
10
10
5
8
16
47
16
22
23
95
100
100
99
99
98

High Clouds (% Sky Obscured)

12
45
20
8
2
4
30
31
44
34
13
9
12
20
26
86
30
100
25
17
15
15
15
3

ISS Passover

Visibility (miles)

4
7
9
9
9
9
9
9
7
1
0
0
9
7
8
8
1
1
1
3
1
0
7
7

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

Precipitation Probability (%)

47
38
48
32
10
16
22
34
41
40
40
39
40
39
39
38
38
36
32
72
86
65
70
86

Precipitation Amount (mm)

0.3
0.2
0.3
0
0
0
0
0
0.2
0.2
0.2
0
0.2
0.2
0.2
0
0
0
0
0.5
0.7
0.4
0.5
0.8

Wind Speed/Direction (mph)

17
19
19
18
19
19
17
16
17
17
17
18
16
16
16
17
16
16
15
14
14
15
14
12

Chance of Frost

Temperature (°C)

19
19
19
18
18
17
17
17
17
17
18
18
18
18
18
18
18
18
18
18
19
18
18
18

Feels Like (°C)

17
17
16
17
16
15
15
15
16
16
16
15
16
15
15
15
16
16
17
18
17
16
15
14

Dew Point (°C)

18
18
18
17
17
16
16
16
17
17
17
18
17
17
17
17
18
18
18
18
18
18
18
17

Relative Humidity (%)

93
89
92
93
93
93
93
95
96
100
98
98
98
95
96
95
98
98
98
96
96
100
96
95

Pressure (mb)

1016
1016
1016
1016
1016
1016
1016
1017
1017
1017
1017
1016
1016
1016
1017
1017
1017
1017
1017
1017
1017
1017
1017
1016

Ozone (du)

297
295
296
296
295
294
294
293
291
290
289
289
289
289
289
290
291
291
291
292
292
292
292
291

Thursday 3

Waning Gibbous 51%

21:55

No Set

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
07 Bad
08 Bad
09 Bad
10 Bad
11 Bad
12 Bad
13 Bad
14 Bad
15 Bad

Sun - Rise: 06:33, Set: 19:59, Transit: 13:15. Moon - Rise: 21:55, Set: No Set. Civil Dark: 20:34 - 05:58. Nautical Dark: 21:17 - 05:15. Astro Dark: 22:05 - 04:27

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
93
87
86
91
96
100

Low Clouds (% Sky Obscured)

97
94
91
89
87
86
86
88
90
92
94
97
91
85
80
70
60
50
47
44
36
40
47
46

Medium Clouds (% Sky Obscured)

37
53
69
82
89
98
75
99
100
100
100
100
100
100
100
100
100
100
16
10
0
0
0
0

High Clouds (% Sky Obscured)

26
54
72
80
76
84
100
100
100
100
100
100
100
100
100
100
100
100
92
84
81
87
93
100

ISS Passover

Visibility (miles)

6
9
8
4
5
2
3
2
2
3
2
2
0
5
2
4
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

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

Precipitation Probability (%)

64
71
84
95
95
95
95
95
95
95
95
95
95
95
95
94
58
42
26
15
0
0
2
5

Precipitation Amount (mm)

0.3
0.3
0.7
0.8
1.7
1.6
1.7
1.8
1.2
1.2
1.8
1.2
1.3
1.6
1.3
0.7
0.2
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

10
12
16
18
16
15
14
12
11
12
14
16
18
19
20
21
18
18
19
19
20
20
20
19

Chance of Frost

Temperature (°C)

17
18
18
18
17
17
17
16
16
16
16
16
17
17
17
17
17
17
17
17
17
17
17
17

Feels Like (°C)

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

Dew Point (°C)

17
17
17
17
17
17
16
16
16
16
16
16
16
16
16
17
16
15
14
14
13
12
12
11

Relative Humidity (%)

96
95
95
95
96
96
98
96
98
98
98
98
96
96
96
96
93
87
86
83
76
72
72
69

Pressure (mb)

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

Ozone (du)

292
292
292
292
291
292
293
293
294
297
299
302
303
305
306
308
310
313
314
317
318
318
317
316

Friday 4

Third Quarter 39%

22:41

16:09

16 Bad
17 Bad
18 Bad
19 Bad
20 Bad
21 OK
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 OK

Sun - Rise: 06:35, Set: 19:57, Transit: 13:14. Moon - Rise: 22:41, Set: 16:09. Civil Dark: 20:32 - 05:59. Nautical Dark: 21:15 - 05:17. Astro Dark: 22:02 - 04:30

Total Clouds (% Sky Obscured)

96
91
91
80
60
35
53
72
100
93
81
77
82
88
92
75
75
74
73
70
69
57
47
36

Low Clouds (% Sky Obscured)

35
28
19
17
9
0
14
28
42
45
54
60
62
64
66
75
73
72
63
56
42
33
29
24

Medium Clouds (% Sky Obscured)

1
0
0
0
2
0
0
0
0
0
0
0
4
16
21
7
6
5
6
6
10
10
10
10

High Clouds (% Sky Obscured)

96
90
89
80
53
25
40
68
100
83
64
46
38
31
21
12
8
6
11
17
23
20
16
12

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 (%)

1
3
11
12
0
1
0
4
2
1
6
2
1
14
7
8
12
16
13
9
9
6
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)

19
18
18
17
16
16
16
16
14
13
12
12
11
10
9
8
8
7
7
7
8
9
8
7

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

12
12
12
13
12
11
11
11
11
11
11
12
11
11
12
12
12
12
12
13
13
13
16
16

Dew Point (°C)

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

Relative Humidity (%)

69
72
77
78
78
77
74
73
72
75
78
83
84
87
89
89
86
82
78
77
75
72
69
67

Pressure (mb)

1016
1017
1017
1017
1018
1018
1019
1019
1020
1020
1020
1021
1021
1021
1022
1022
1023
1024
1024
1025
1025
1025
1025
1025

Ozone (du)

315
315
314
315
315
314
314
313
313
312
309
307
306
305
303
301
300
298
297
296
294
292
291
290

Saturday 5

Waning Crescent 28%

23:48

17:14

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

Sun - Rise: 06:36, Set: 19:54, Transit: 13:14. Moon - Rise: 23:48, Set: 17:14. Civil Dark: 20:29 - 06:01. Nautical Dark: 21:12 - 05:19. Astro Dark: 21:59 - 04:32

Total Clouds (% Sky Obscured)

48
59
72
69
66
63
50
38
29
41
63
71
78
85
91
89
85
80
86
93
100
99
98
97

Low Clouds (% Sky Obscured)

15
7
0
0
0
0
9
22
29
34
41
43
30
17
5
3
1
0
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

19
27
36
39
42
44
37
29
17
16
15
14
14
14
13
11
8
6
10
18
23
40
55
73

High Clouds (% Sky Obscured)

29
45
59
43
27
12
7
3
1
8
14
20
43
65
84
81
76
74
82
91
100
98
97
97

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

Chance of Frost

Temperature (°C)

17
16
16
15
15
14
14
14
14
14
14
14
14
14
14
14
16
17
19
19
20
20
21
21

Feels Like (°C)

16
15
16
16
14
15
16
15
15
15
15
14
14
14
14
14
14
14
14
15
15
16
20
20

Dew Point (°C)

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

Relative Humidity (%)

64
68
73
78
80
83
86
86
86
84
83
82
80
78
78
75
72
67
64
63
61
61
61
60

Pressure (mb)

1025
1025
1025
1025
1025
1025
1025
1025
1024
1024
1024
1023
1023
1022
1022
1022
1022
1022
1021
1021
1021
1020
1020
1019

Ozone (du)

289
289
289
290
291
292
294
294
295
296
295
295
294
293
292
291
290
289
288
288
288
288
289
289

Sunday 6

Waning Crescent 18%

01:11

18:00

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

Sun - Rise: 06:38, Set: 19:52, Transit: 13:14. Moon - Rise: 01:11, Set: 18:00. Civil Dark: 20:27 - 06:03. Nautical Dark: 21:10 - 05:20. Astro Dark: 21:56 - 04:34

Total Clouds (% Sky Obscured)

99
99
100
94
86
79
71
65
60
69
79
88
87
86
85
90
93
97
97
98
99

Low Clouds (% Sky Obscured)

5
10
14
12
10
10
11
11
11
16
24
31
43
57
75
71
72
69
69
68
68

Medium Clouds (% Sky Obscured)

75
76
82
81
81
78
71
65
60
69
79
88
71
50
29
20
10
2
10
19
27

High Clouds (% Sky Obscured)

94
92
92
70
44
13
10
6
3
6
9
17
22
29
34
49
64
71
76
81
91

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
7
4
2
1
1
0
3
6

Fog (%)

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

Precipitation Probability (%)

1
1
0
1
0
0
0
0
0
0
0
0
0
7
13
10
17
29
19
19
20

Precipitation Amount (mm)

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)

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

Chance of Frost

Temperature (°C)

21
21
20
20
19
18
18
17
17
17
17
16
16
16
16
17
17
18
19
19
19

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

59
64
69
75
75
75
74
74
74
76
79
82
85
89
93
96
96
96
96
93
91

Pressure (mb)

1019
1019
1018
1018
1018
1018
1018
1018
1018
1018
1017
1017
1017
1017
1017
1017
1017
1017
1018
1018
1018

Ozone (du)

290
290
289
289
289
290
290
292
293
295
299
303
307
305
303
301
301
301
300
300
300

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

Generated: 31/08/26 16:28:35. Forecast: 31/08/26 to 06/09/26. Timezone: UTC+1.00