Clear Outside v1.0 - International Weather Forecasts For Astronomers

Monday 15

Waning Crescent 30%

23:42

17:08

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
07 Bad
08 Bad

Sun - Rise: 06:51, Set: 19:28, Transit: 13:09. Moon - Rise: 23:42, Set: 17:08. Civil Dark: 20:02 - 06:17. Nautical Dark: 20:43 - 05:36. Astro Dark: 21:26 - 04:53

Total Clouds (% Sky Obscured)

79
68
60
50
56
78
64
45
71
83
76
94
84
64
65
72
73
65
69
70
72
87
100
100

Low Clouds (% Sky Obscured)

40
35
44
44
56
78
55
43
41
55
56
54
71
60
61
68
72
63
66
69
61
60
61
47

Medium Clouds (% Sky Obscured)

3
0
38
4
1
1
6
5
67
25
23
38
13
0
0
0
0
0
2
0
0
0
0
0

High Clouds (% Sky Obscured)

0
3
1
0
0
3
5
29
4
2
2
0
0
0
0
0
0
0
8
0
51
49
80
67

ISS Passover

Visibility (miles)

9
9
9
9
9
9
8
9
2
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
Light Rain
Very Light Rain
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

42
34
35
35
45
58
62
80
57
26
28
27
21
16
5
7
7
5
4
7
4
13
17
19

Precipitation Amount (mm)

0
0
0
0
0
0
0
0.4
0.3
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

25
27
28
28
28
28
29
30
28
26
24
23
22
23
22
21
19
20
19
18
17
16
14
14

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

84
83
80
82
78
76
83
83
93
93
90
92
90
92
89
86
84
77
75
77
76
73
76
83

Pressure (mb)

1000
1000
1001
1002
1002
1002
1003
1004
1004
1005
1006
1008
1009
1010
1010
1011
1012
1012
1013
1013
1014
1014
1015
1016

Ozone (du)

304
305
305
305
305
306
307
308
307
307
307
307
309
305
306
305
301
299
299
299
298
297
296
297

Tuesday 16

Waning Crescent 28%

01:04

17:46

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
07 Bad
08 Bad

Sun - Rise: 06:53, Set: 19:26, Transit: 13:08. Moon - Rise: 01:04, Set: 17:46. Civil Dark: 20:00 - 06:19. Nautical Dark: 20:40 - 05:38. Astro Dark: 21:24 - 04:55

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
95
100
100
100
100
100
100
97
100
100
98
98
100
100
97
84
68

Low Clouds (% Sky Obscured)

50
40
29
54
23
32
36
43
80
97
56
83
86
94
88
82
86
86
90
100
100
94
83
63

Medium Clouds (% Sky Obscured)

10
28
41
41
43
52
52
48
53
78
100
100
100
100
95
100
100
95
96
100
86
35
10
24

High Clouds (% Sky Obscured)

67
72
80
100
96
82
100
93
100
100
100
100
100
100
55
59
60
81
53
21
13
3
8
41

ISS Passover

Visibility (miles)

9
9
9
8
9
9
9
9
9
9
9
9
9
9
9
9
9
4
2
1
0
0
0
1

Fog (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
56
0
0
0
5
4

Precipitation Type

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

Precipitation Probability (%)

22
26
15
21
20
20
12
22
35
54
75
88
93
95
95
95
95
95
95
95
95
95
95
95

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0.4
0.6
0.6
0.8
0.8
1.4
2.1
2
2.2
2.8
0.9
1
0.6
1.9

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

7
7
8
9
9
9
10
9
10
9
9
9
9
9
9
10
10
11
11
12
13
13
13
14

Dew Point (°C)

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

Relative Humidity (%)

84
81
79
74
71
69
69
71
71
79
83
90
90
90
93
92
95
96
98
98
100
100
98
98

Pressure (mb)

1016
1017
1017
1018
1018
1018
1018
1018
1017
1017
1018
1018
1017
1017
1016
1016
1015
1014
1013
1012
1012
1011
1011
1011

Ozone (du)

296
294
289
285
282
279
278
276
273
273
272
272
272
271
270
267
264
262
262
261
259
259
260
261

Wednesday 17

Waning Crescent 20%

02:28

18:11

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
07 Bad
08 Bad

Sun - Rise: 06:54, Set: 19:23, Transit: 13:08. Moon - Rise: 02:28, Set: 18:11. Civil Dark: 19:57 - 06:21. Nautical Dark: 20:38 - 05:40. Astro Dark: 21:21 - 04:57

Total Clouds (% Sky Obscured)

76
73
81
100
95
87
96
94
94
89
93
84
93
93
94
93
96
98
100
99
98
97
95
93

Low Clouds (% Sky Obscured)

69
64
71
69
90
78
86
78
80
62
58
61
51
56
61
55
55
54
54
55
55
59
62
65

Medium Clouds (% Sky Obscured)

30
18
30
2
11
7
53
66
62
70
51
62
69
28
41
24
23
24
22
34
49
35
30
20

High Clouds (% Sky Obscured)

33
0
4
40
7
0
0
9
39
38
5
3
50
48
49
6
30
53
76
68
56
49
47
39

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
1
67
7
1
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
None
None
None
None
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Very Light Rain
Very Light Rain
None
Light Rain
Very Light Rain
None
None
None
None
Very Light Rain
None
None
None

Precipitation Probability (%)

95
76
32
30
35
48
93
93
95
90
76
47
46
32
67
59
47
36
39
44
58
29
14
12

Precipitation Amount (mm)

1.4
0.4
0
0
0
0
0.9
0.8
1
0.5
0.4
0.2
0.2
0
0.4
0.3
0
0
0
0
0.3
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

100
98
98
98
98
98
96
96
96
96
98
98
98
98
98
98
98
98
96
95
96
98
96
98

Pressure (mb)

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

Ozone (du)

259
261
262
263
265
265
262
260
258
255
256
257
258
260
261
263
264
265
265
264
264
264
264
264

Thursday 18

Waning Crescent 12%

03:51

18:28

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
07 Bad
08 Bad

Sun - Rise: 06:56, Set: 19:21, Transit: 13:08. Moon - Rise: 03:51, Set: 18:28. Civil Dark: 19:55 - 06:22. Nautical Dark: 20:35 - 05:42. Astro Dark: 21:18 - 04:59

Total Clouds (% Sky Obscured)

93
97
99
100
100
99
99
96
94
89
89
93
98
98
98
99
99
99
100
99
99
99
100
100

Low Clouds (% Sky Obscured)

69
65
60
56
64
75
86
84
82
80
80
80
80
83
87
90
90
91
91
87
84
81
81
83

Medium Clouds (% Sky Obscured)

19
23
29
27
28
31
31
20
12
3
42
41
73
59
62
58
53
41
25
25
21
89
24
20

High Clouds (% Sky Obscured)

30
47
65
100
78
57
33
49
50
47
13
32
36
23
32
55
27
50
49
62
60
52
75
55

ISS Passover

Visibility (miles)

0
0
2
9
9
9
7
6
9
9
0
0
0
0
0
0
0
6
5
6
6
5
1
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
None
None
None
None
None
None
None
None
None
None
None
Very Light Rain
None
None
None
None
None

Precipitation Probability (%)

4
9
6
11
11
6
11
5
7
4
9
15
13
18
23
33
44
50
58
54
49
27
33
30

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.2
0
0
0
0
0

Wind Speed/Direction (mph)

12
13
13
13
13
12
12
10
10
8
7
7
6
7
7
8
9
11
12
14
13
13
12
12

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

98
98
96
95
90
87
87
93
87
92
96
96
98
98
96
98
96
92
95
93
96
95
96
96

Pressure (mb)

1015
1015
1015
1015
1015
1015
1015
1015
1015
1015
1016
1016
1016
1016
1016
1016
1016
1016
1015
1015
1015
1015
1015
1015

Ozone (du)

263
263
263
263
261
258
257
255
254
255
255
257
258
259
258
258
257
258
258
259
261
261
262
262

Friday 19

Waning Crescent 6%

05:10

18:41

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
07 Bad
08 Bad

Sun - Rise: 06:58, Set: 19:18, Transit: 13:07. Moon - Rise: 05:10, Set: 18:41. Civil Dark: 19:52 - 06:24. Nautical Dark: 20:33 - 05:44. Astro Dark: 21:15 - 05:01

Total Clouds (% Sky Obscured)

100
100
68
90
91
98
96
98
96
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

84
83
68
79
75
72
69
70
70
70
87
87
88
88
88
88
79
70
60
55
49
43
41
39

Medium Clouds (% Sky Obscured)

8
3
11
3
3
4
4
50
41
28
74
83
93
92
90
89
89
92
91
94
94
93
75
59

High Clouds (% Sky Obscured)

87
100
68
90
90
85
78
85
86
100
98
93
86
90
95
100
100
100
100
100
100
100
100
100

ISS Passover

Visibility (miles)

0
0
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 (%)

27
17
11
7
11
13
10
12
11
6
11
17
19
32
40
15
18
17
5
10
14
8
16
21

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
12
11
14
15
14
13
12
11
10
7
6
5
4
4
3
3
4
4
5
5
6
6
7

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

98
96
90
79
72
66
65
64
71
75
83
83
83
82
82
80
82
76
74
70
70
69
68
70

Pressure (mb)

1016
1016
1017
1017
1017
1017
1016
1016
1016
1016
1016
1017
1017
1017
1017
1016
1016
1015
1015
1014
1014
1013
1013
1012

Ozone (du)

263
263
264
263
263
264
263
263
265
265
265
265
265
265
266
267
267
268
269
269
270
270
271
272

Saturday 20

Waning Crescent 2%

06:26

18:52

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
07 Bad
08 Bad

Sun - Rise: 06:59, Set: 19:16, Transit: 13:07. Moon - Rise: 06:26, Set: 18:52. Civil Dark: 19:50 - 06:26. Nautical Dark: 20:30 - 05:45. Astro Dark: 21:12 - 05:03

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
93
80
66
64
63
62
58
70
74
71
67
60
61
60
55
67
80

Low Clouds (% Sky Obscured)

37
46
56
56
67
75
84
81
75
57
55
54
52
51
50
49
49
47
48
58
60
55
63
61

Medium Clouds (% Sky Obscured)

49
68
77
81
74
69
61
49
35
40
36
41
39
30
17
3
2
1
0
0
0
0
13
28

High Clouds (% Sky Obscured)

100
100
100
100
100
100
100
75
60
40
40
39
44
26
15
0
0
0
0
0
0
0
0
0

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
8
6
4
3
1
0
0
0
0
0
0
0
2
3
5
6

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
Very Light Rain
Very Light Rain
None
None
None
None
None

Precipitation Probability (%)

18
29
21
9
9
11
11
25
34
43
51
52
46
44
46
46
52
54
55
50
47
42
38
37

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.2
0.2
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

72
75
75
74
74
75
78
79
83
89
93
95
96
98
98
98
98
98
98
98
96
98
96
95

Pressure (mb)

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

Ozone (du)

273
274
274
273
273
274
274
274
276
278
280
282
284
286
287
288
289
291
293
295
296
296
297
300

Sunday 21

New Moon 0%

07:40

19:01

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: 07:01, Set: 19:14, Transit: 13:07. Moon - Rise: 07:40, Set: 19:01. Civil Dark: 19:48 - 06:27. Nautical Dark: 20:28 - 05:47. Astro Dark: 21:10 - 05:05

Total Clouds (% Sky Obscured)

92
86
81
76
73
71
70
57
42
28
29
35
46
57
72
84

Low Clouds (% Sky Obscured)

58
60
62
63
63
63
62
46
29
12
20
28
32
45
55
63

Medium Clouds (% Sky Obscured)

38
32
26
20
18
15
12
11
11
10
6
4
1
14
28
42

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
1
1
1
2
3
4
3
3
3

ISS Passover

Visibility (miles)

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

Fog (%)

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

Precipitation Type

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

Precipitation Probability (%)

37
54
65
74
78
82
85
75
72
70
63
58
51
48
45
37

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

13
15
15
15
16
15
14
13
11
9
7
6
5
4
4
4

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

93
92
90
90
90
89
87
87
89
92
93
93
93
93
96
96

Pressure (mb)

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

Ozone (du)

303
306
309
313
317
314
311
309
310
311
312
312
311
311
309
308

Forecast for Rhayader, Powys, United Kingdom (52.27,-3.57)

Generated: 15/09/25 09:10:51. Forecast: 15/09/25 to 21/09/25. Timezone: UTC+1.00