Clear Outside v1.0 - International Weather Forecasts For Astronomers

Thursday 18

Waning Crescent 6%

03:53

18:31

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

Sun - Rise: 06:58, Set: 19:23, Transit: 13:10. Moon - Rise: 03:53, Set: 18:31. Civil Dark: 19:57 - 06:24. Nautical Dark: 20:38 - 05:44. Astro Dark: 21:21 - 05:01

Total Clouds (% Sky Obscured)

100
99
99
95
97
98
90
90
93
99
98
99
100
98
100
99
100
97
97
96
98
94
92
90

Low Clouds (% Sky Obscured)

83
74
85
71
90
81
86
85
71
84
85
84
87
87
85
85
83
74
76
78
77
78
88
73

Medium Clouds (% Sky Obscured)

23
27
23
33
39
42
39
34
22
19
24
92
39
50
17
45
42
46
66
68
60
29
25
25

High Clouds (% Sky Obscured)

45
28
29
18
7
18
16
33
55
62
20
46
95
77
100
81
100
81
30
10
61
42
37
46

ISS Passover

Visibility (miles)

1
1
6
9
7
7
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
29
10
22
11
7
6
11
15
9
7
8
8
11
18
18
33
38
28
17
12
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
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

17
17
17
17
16
17
16
16
16
16
16
16
16
16
15
16
16
15
16
15
16
15
16
16

Relative Humidity (%)

98
96
95
93
93
95
93
93
93
92
92
92
92
93
92
95
93
93
93
92
93
90
88
83

Pressure (mb)

1016
1016
1016
1016
1016
1016
1016
1017
1017
1017
1017
1017
1017
1017
1016
1016
1016
1016
1016
1015
1016
1016
1016
1015

Ozone (du)

264
262
262
261
261
261
262
261
262
263
262
262
262
261
263
264
263
263
264
265
265
265
264
264

Friday 19

Waning Crescent 2%

05:12

18:44

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

Sun - Rise: 07:00, Set: 19:21, Transit: 13:09. Moon - Rise: 05:12, Set: 18:44. Civil Dark: 19:55 - 06:26. Nautical Dark: 20:35 - 05:45. Astro Dark: 21:18 - 05:03

Total Clouds (% Sky Obscured)

96
97
100
100
88
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

86
89
100
100
88
100
100
91
98
94
75
64
85
84
95
89
84
83
97
96
85
97
96
97

Medium Clouds (% Sky Obscured)

44
95
83
95
52
51
50
57
59
79
100
89
77
100
100
100
100
99
100
98
100
100
75
70

High Clouds (% Sky Obscured)

70
70
100
83
42
79
100
100
100
67
67
76
100
100
74
100
100
78
100
100
58
82
100
86

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
6
5
2
6
7
7
7
7
7
7
7
7
9
9
9
8
9

Fog (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
6
5
9
9
2
20
0
0
0
0

Precipitation Type

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

Precipitation Probability (%)

6
10
27
31
24
19
11
16
44
88
95
88
95
95
95
95
95
85
84
90
79
95
95
70

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0.7
2.5
0.6
1
1.3
1.6
2.1
1.2
0.5
0.4
0.7
0.3
0.4
0.5
0

Wind Speed/Direction (mph)

15
16
16
15
12
11
9
8
7
6
5
5
3
3
2
2
4
3
2
2
2
2
2
3

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

80
80
80
80
82
89
95
96
96
96
96
95
95
96
96
96
96
96
95
95
95
95
93
95

Pressure (mb)

1015
1015
1014
1014
1014
1014
1014
1014
1014
1014
1014
1013
1013
1012
1012
1011
1011
1010
1010
1009
1008
1008
1008
1007

Ozone (du)

264
264
264
264
265
265
266
265
263
262
263
263
264
265
265
266
269
270
272
273
272
272
272
273

Saturday 20

Waning Crescent 0%

06:28

18:54

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

Sun - Rise: 07:01, Set: 19:18, Transit: 13:09. Moon - Rise: 06:28, Set: 18:54. Civil Dark: 19:52 - 06:28. Nautical Dark: 20:33 - 05:47. Astro Dark: 21:15 - 05:05

Total Clouds (% Sky Obscured)

98
97
98
94
100
43
30
27
100
100
99
99
100
100
100
100
100
100
100
100
99
99
99
99

Low Clouds (% Sky Obscured)

85
88
87
81
100
43
30
27
75
75
80
81
93
93
88
82
60
55
56
56
53
57
63
67

Medium Clouds (% Sky Obscured)

92
94
94
86
78
43
30
27
63
54
45
40
47
90
60
62
74
77
56
79
62
81
90
87

High Clouds (% Sky Obscured)

3
0
60
0
0
0
0
0
3
0
0
10
97
49
51
57
92
98
89
69
54
37
21
4

ISS Passover

Visibility (miles)

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

Precipitation Probability (%)

90
95
95
88
70
57
65
53
47
62
57
40
54
63
44
47
36
32
32
44
57
60
57
58

Precipitation Amount (mm)

0.2
0.4
0.9
0.2
0.3
0
0.5
0.3
0
0.4
0.3
0
0.2
0.3
0
0
0
0
0
0
0
0.3
0
0

Wind Speed/Direction (mph)

4
7
9
10
10
13
15
14
13
13
13
14
14
16
19
22
22
20
19
16
14
11
11
12

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

92
86
79
83
79
77
82
82
82
80
83
87
89
90
87
90
83
83
84
83
84
87
92
93

Pressure (mb)

1006
1005
1004
1004
1003
1003
1003
1003
1002
1002
1001
1002
1001
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1010

Ozone (du)

274
275
279
285
286
291
296
301
304
312
318
317
314
312
311
311
312
314
316
316
316
317
318
319

Sunday 21

New Moon 0%

07:42

19:03

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

Sun - Rise: 07:03, Set: 19:16, Transit: 13:09. Moon - Rise: 07:42, Set: 19:03. Civil Dark: 19:50 - 06:29. Nautical Dark: 20:30 - 05:49. Astro Dark: 21:12 - 05:07

Total Clouds (% Sky Obscured)

98
98
98
95
94
94
93
91
90
90
90
90
90
90
90
85
85
80
80
80
80
77
63
66

Low Clouds (% Sky Obscured)

60
54
51
39
34
30
25
25
25
20
25
25
25
25
25
25
20
20
20
20
25
33
38
50

Medium Clouds (% Sky Obscured)

27
18
7
7
25
49
14
35
35
25
25
30
22
9
2
2
2
2
1
0
0
0
0
0

High Clouds (% Sky Obscured)

28
51
67
51
41
55
46
45
55
55
55
60
34
5
10
2
0
0
0
0
0
0
0
0

ISS Passover

Visibility (miles)

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

Precipitation Probability (%)

57
50
45
41
31
19
26
31
38
44
46
39
32
28
27
22
19
13
6
7
11
3
2
1

Precipitation Amount (mm)

0.3
0.2
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
15
15
14
14
14
12
10
8
8
7
7
8
8
8
8
8
8
7
7
7
7
7

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

90
93
90
87
86
86
85
83
83
85
87
87
87
87
87
87
87
85
85
81
81
78
75
68

Pressure (mb)

1011
1011
1012
1013
1013
1014
1015
1016
1016
1017
1017
1018
1018
1019
1019
1019
1020
1020
1021
1022
1022
1023
1023
1023

Ozone (du)

318
318
318
318
318
319
320
318
317
317
317
316
316
316
316
317
317
316
315
315
316
316
315
314

Monday 22

Waxing Crescent 1%

08:56

19:12

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

Sun - Rise: 07:05, Set: 19:13, Transit: 13:08. Moon - Rise: 08:56, Set: 19:12. Civil Dark: 19:47 - 06:31. Nautical Dark: 20:28 - 05:51. Astro Dark: 21:10 - 05:09

Total Clouds (% Sky Obscured)

94
94
91
89
62
40
15
13
15
18
17
15
18
20
23
24
25
26
39
48
60
73
84
95

Low Clouds (% Sky Obscured)

63
61
58
51
38
29
15
9
0
0
0
0
0
0
0
4
8
11
11
10
8
10
2
4

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
18
17
15
18
20
23
24
25
26
25
22
28
26
19
17

High Clouds (% Sky Obscured)

0
0
3
4
1
1
1
2
4
18
17
15
18
20
23
24
25
26
39
48
59
73
84
95

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
1
2
1
0
1
0
0
0
0
1
1
1
4
5
6
11
14
11
28
35
39

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)

8
8
8
8
8
8
8
7
6
6
5
5
5
5
5
5
5
5
5
3
2
3
3
3

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

64
68
66
64
69
70
72
78
84
85
87
87
87
85
85
84
84
85
84
81
77
73
79
84

Pressure (mb)

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

Ozone (du)

313
312
311
310
309
308
306
304
303
302
302
302
301
301
300
300
299
298
297
297
297
298
297
297

Tuesday 23

Waxing Crescent 3%

10:10

19:21

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

Sun - Rise: 07:06, Set: 19:11, Transit: 13:08. Moon - Rise: 10:10, Set: 19:21. Civil Dark: 19:45 - 06:33. Nautical Dark: 20:25 - 05:53. Astro Dark: 21:07 - 05:11

Total Clouds (% Sky Obscured)

97
98
100
100
100
100
99
96
87
84
91
100
100
100
100
99
98
96
95
97
99
94
88
83

Low Clouds (% Sky Obscured)

13
23
33
41
49
59
55
51
45
39
35
32
37
35
44
49
63
74
78
73
71
72
72
64

Medium Clouds (% Sky Obscured)

13
13
14
33
52
70
56
43
32
41
58
76
90
90
90
75
62
46
28
22
24
26
28
35

High Clouds (% Sky Obscured)

95
91
95
64
31
0
1
1
0
29
57
90
90
90
90
90
81
76
72
76
86
86
86
83

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 (%)

38
35
29
32
29
22
21
20
21
18
13
2
10
11
7
15
16
8
11
9
3
11
12
7

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

Chance of Frost

Temperature (°C)

12
12
12
13
12
12
12
12
11
11
11
11
11
11
11
11
11
11
11
12
12
12
13
13

Feels Like (°C)

10
11
11
11
11
11
11
11
11
11
11
10
10
10
10
10
10
10
10
11
10
10
10
10

Dew Point (°C)

10
11
11
11
11
11
11
11
10
10
10
10
9
9
9
9
9
9
9
9
9
9
9
9

Relative Humidity (%)

89
90
90
90
92
93
93
93
90
90
88
88
87
86
86
84
84
86
87
84
83
81
79
76

Pressure (mb)

1025
1025
1025
1025
1025
1025
1025
1025
1025
1025
1025
1025
1026
1025
1025
1025
1025
1025
1025
1026
1026
1026
1026
1026

Ozone (du)

297
297
297
296
296
295
295
295
295
295
295
295
295
295
294
294
294
294
293
294
294
294
294
294

Wednesday 24

Waxing Crescent 7%

11:25

19:33

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: 07:08, Set: 19:09, Transit: 13:08. Moon - Rise: 11:25, Set: 19:33. Civil Dark: 19:43 - 06:34. Nautical Dark: 20:23 - 05:54. Astro Dark: 21:04 - 05:13

Total Clouds (% Sky Obscured)

72
61
49
43
62
78
88
86
81
86
91
97
98
98
99
98
96
95

Low Clouds (% Sky Obscured)

56
50
44
31
19
9
12
17
22
29
38
51
49
35
18
24
29
35

Medium Clouds (% Sky Obscured)

44
58
49
42
42
41
37
42
42
37
46
55
71
73
75
73
65
57

High Clouds (% Sky Obscured)

72
61
49
43
62
78
88
86
81
86
91
97
98
98
98
89
83
77

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 (%)

22
25
23
28
30
19
36
38
21
29
32
30
24
17
13
12
11
5

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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

10
14
14
14
14
15
16
13
14
15
15
14
14
10
10
10
10
10

Dew Point (°C)

9
10
10
10
10
10
10
10
11
11
11
11
11
10
10
10
10
10

Relative Humidity (%)

74
75
75
75
78
82
83
84
86
87
90
90
92
90
90
88
89
89

Pressure (mb)

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

Ozone (du)

295
294
293
293
292
292
292
292
292
291
291
291
290
291
292
293
294
294

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

Generated: 18/09/25 13:17:19. Forecast: 18/09/25 to 24/09/25. Timezone: UTC+1.00