Clear Outside v1.0 - International Weather Forecasts For Astronomers

Monday 8

Waning Gibbous 77%

21:29

12:01

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

Sun - Rise: 08:12, Set: 16:01, Transit: 12:06. Moon - Rise: 21:29, Set: 12:01. Civil Dark: 16:42 - 07:31. Nautical Dark: 17:26 - 06:47. Astro Dark: 18:07 - 06:06

Total Clouds (% Sky Obscured)

94
95
96
97
100
100
100
100
100
100
100
100
93
100
84
68
75
77
74
64
66
44
44
34

Low Clouds (% Sky Obscured)

55
89
89
95
89
89
88
87
88
100
93
85
86
100
83
64
60
65
60
58
55
41
44
34

Medium Clouds (% Sky Obscured)

83
95
96
97
100
100
100
100
100
100
98
60
62
92
60
61
69
24
53
22
13
0
0
0

High Clouds (% Sky Obscured)

94
95
96
97
100
100
100
100
100
96
98
95
51
51
45
50
4
5
60
64
4
4
4
0

ISS Passover

Visibility (miles)

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

Fog (%)

2
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
Light Rain
Light Rain
Light Rain
Moderate Rain
Moderate Rain
Moderate Rain
Moderate Rain
Moderate Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Very Light Rain
None
None
None
None
None
None
None
None

Precipitation Probability (%)

20
95
95
95
95
95
95
95
95
95
95
95
95
95
78
50
50
48
26
22
10
7
5
8

Precipitation Amount (mm)

0
0.7
1.9
2.4
3.1
2.7
3.4
3.6
5.2
1.7
1.1
2
1.9
1.1
0.4
0.2
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

8
7
7
6
11
17
19
19
18
19
21
21
22
22
27
29
29
29
29
25
23
22
22
20

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

95
95
98
98
93
92
92
91
95
93
95
93
92
92
93
93
93
92
88
87
88
87
85
87

Pressure (mb)

1005
1004
1003
1002
1000
999
998
997
996
995
995
995
995
994
993
993
993
993
995
997
999
1000
1002
1003

Ozone (du)

317
312
305
296
291
290
288
290
288
287
288
289
289
287
286
286
285
285
285
283
284
286
287
292

Tuesday 9

Waning Gibbous 67%

No Rise

12:15

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

Sun - Rise: 08:13, Set: 16:01, Transit: 12:07. Moon - Rise: No Rise, Set: 12:15. Civil Dark: 16:42 - 07:32. Nautical Dark: 17:26 - 06:48. Astro Dark: 18:07 - 06:07

Total Clouds (% Sky Obscured)

48
48
48
52
56
57
60
62
96
57
62
60
56
35
33
34
61
59
25
55
67
63
100
100

Low Clouds (% Sky Obscured)

48
48
48
52
56
57
60
62
71
53
62
56
47
35
33
34
61
49
15
41
50
50
51
55

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
1
47
4
0
0
0
0
0
0
0
8
9
3
17
19
0
0

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
10
46
5
8
97
100

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 (%)

6
21
12
10
8
8
9
12
20
15
15
13
9
16
6
11
3
2
0
0
1
1
1
2

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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

7
7
7
7
7
7
7
7
7
7
7
7
6
7
7
7
7
7
6
6
6
6
6
6

Relative Humidity (%)

90
90
88
88
90
88
90
91
91
85
87
91
85
85
87
85
84
85
85
87
93
94
94
93

Pressure (mb)

1004
1004
1005
1005
1006
1006
1007
1007
1007
1008
1009
1010
1011
1012
1013
1013
1014
1015
1016
1017
1017
1018
1018
1019

Ozone (du)

295
299
302
303
303
303
306
306
309
313
317
323
323
328
322
313
312
311
310
311
312
310
308
306

Wednesday 10

Waning Gibbous 57%

22:50

12:26

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

Sun - Rise: 08:14, Set: 16:01, Transit: 12:07. Moon - Rise: 22:50, Set: 12:26. Civil Dark: 16:42 - 07:33. Nautical Dark: 17:26 - 06:49. Astro Dark: 18:07 - 06:08

Total Clouds (% Sky Obscured)

56
96
74
89
81
63
45
40
23
39
34
45
72
100
100
100
100
97
72
100
100
100
100
100

Low Clouds (% Sky Obscured)

55
54
72
56
76
63
45
32
14
39
34
45
72
64
62
57
50
51
52
55
60
66
72
66

Medium Clouds (% Sky Obscured)

2
73
0
0
0
0
0
0
0
0
0
0
0
0
44
55
5
5
6
5
13
24
100
100

High Clouds (% Sky Obscured)

2
59
17
55
28
0
0
0
0
13
9
10
26
100
100
100
100
95
72
100
100
100
100
100

ISS Passover

Visibility (miles)

9
9
9
9
9
5
5
9
9
9
9
9
9
3
9
9
9
9
9
9
9
9
9
9

Fog (%)

0
0
0
0
20
1
1
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
1
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
5
1
1
3
5
7
27

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

6
6
6
7
7
7
7
7
6
6
6
6
6
7
7
7
7
7
6
7
7
7
8
8

Relative Humidity (%)

93
93
93
94
94
96
96
98
98
96
96
98
94
96
91
90
87
88
88
91
93
91
93
95

Pressure (mb)

1019
1019
1019
1018
1018
1018
1017
1017
1016
1016
1016
1016
1016
1015
1014
1013
1012
1012
1011
1011
1011
1010
1010
1009

Ozone (du)

306
303
302
302
302
303
301
299
301
303
305
306
309
309
308
307
309
307
305
305
306
308
308
307

Thursday 11

Third Quarter 46%

00:06

12:36

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

Sun - Rise: 08:15, Set: 16:01, Transit: 12:08. Moon - Rise: 00:06, Set: 12:36. Civil Dark: 16:42 - 07:34. Nautical Dark: 17:26 - 06:50. Astro Dark: 18:07 - 06:09

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
100
100
100
87
76
65
51
83
92
100
90
80
73
73

Low Clouds (% Sky Obscured)

60
57
62
67
68
75
90
100
81
62
43
30
16
3
12
21
30
39
48
58
55
53
50
52

Medium Clouds (% Sky Obscured)

97
100
86
100
98
100
99
100
100
94
100
65
64
87
66
46
34
50
45
40
40
49
70
73

High Clouds (% Sky Obscured)

100
100
73
49
28
26
24
32
55
72
91
90
88
45
28
22
9
70
84
100
80
63
50
55

ISS Passover

Visibility (miles)

0
0
1
9
9
9
9
5
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
Very Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Very Light Rain
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

30
31
24
26
30
74
95
95
95
95
95
68
28
3
0
0
0
1
4
2
8
9
2
4

Precipitation Amount (mm)

0
0
0
0
0
0.2
0.7
0.9
2
1.5
1.1
0.3
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

13
12
12
13
12
11
10
10
7
8
6
6
5
5
7
6
7
7
6
6
7
7
7
7

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

96
98
96
87
88
90
91
93
95
93
84
84
84
79
77
78
79
82
88
91
91
91
93
93

Pressure (mb)

1009
1009
1008
1008
1008
1007
1007
1007
1007
1008
1009
1010
1011
1012
1012
1012
1013
1013
1014
1014
1015
1015
1015
1016

Ozone (du)

307
308
309
312
312
316
317
319
321
323
324
324
326
329
331
334
333
332
334
336
337
334
333
335

Friday 12

Waning Crescent 36%

01:19

12:45

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

Sun - Rise: 08:16, Set: 16:01, Transit: 12:08. Moon - Rise: 01:19, Set: 12:45. Civil Dark: 16:42 - 07:35. Nautical Dark: 17:26 - 06:51. Astro Dark: 18:07 - 06:09

Total Clouds (% Sky Obscured)

78
84
84
81
82
84
85
83
85
67
86
54
46
57
62
66
52
45
45
42
60
82
97
98

Low Clouds (% Sky Obscured)

53
57
55
55
56
59
62
66
66
67
68
54
46
57
62
66
52
45
45
42
60
82
91
92

Medium Clouds (% Sky Obscured)

78
83
78
76
75
13
53
58
62
26
67
32
28
31
38
39
38
25
11
0
12
26
42
49

High Clouds (% Sky Obscured)

50
55
55
45
45
40
35
2
0
0
0
1
3
4
17
17
19
20
23
27
49
67
85
88

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

Precipitation Probability (%)

6
8
22
28
5
8
8
6
13
17
3
8
17
33
52
39
33
28
18
6
13
9
3
12

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

94
93
91
91
93
96
96
84
82
88
94
94
91
84
79
81
84
87
90
91
94
94
94
95

Pressure (mb)

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

Ozone (du)

338
342
347
351
362
370
376
390
400
405
411
408
395
386
381
373
365
357
351
346
341
336
331
326

Saturday 13

Waning Crescent 27%

02:32

12:56

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

Sun - Rise: 08:17, Set: 16:01, Transit: 12:09. Moon - Rise: 02:32, Set: 12:56. Civil Dark: 16:42 - 07:36. Nautical Dark: 17:26 - 06:52. Astro Dark: 18:07 - 06:10

Total Clouds (% Sky Obscured)

99
100
97
93
91
94
94
93
91
89
86
89
94
100
100
100
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

93
94
89
83
78
76
75
73
68
62
57
58
59
60
66
73
79
80
81
83
78
73
68
68

Medium Clouds (% Sky Obscured)

64
80
57
44
34
23
15
3
7
11
17
40
62
82
79
77
77
87
92
93
93
92
94
90

High Clouds (% Sky Obscured)

93
100
75
50
25
20
16
11
16
31
36
57
79
100
100
100
100
100
100
100
100
100
100
100

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
6
3
0
1
3
4
3
2
1
2
2
3
3
2
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
None
Very Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain

Precipitation Probability (%)

12
11
14
13
4
13
15
13
22
22
25
26
28
44
53
61
80
95
95
95
95
95
95
95

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.2
0.4
0.7
0.9
1
1.5
1.7
2.1
2.1

Wind Speed/Direction (mph)

14
14
15
13
12
13
14
16
17
17
17
17
18
18
19
18
17
17
17
16
16
15
14
14

Chance of Frost

Temperature (°C)

8
8
8
8
8
8
8
8
8
8
8
8
9
9
9
9
9
9
9
9
9
9
9
10

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

93
93
93
93
95
95
95
95
93
95
95
98
96
96
96
95
96
95
95
93
93
93
95
95

Pressure (mb)

1018
1018
1018
1017
1017
1016
1016
1015
1014
1014
1014
1014
1013
1012
1012
1011
1010
1009
1008
1007
1007
1006
1006
1006

Ozone (du)

322
319
315
317
319
320
322
323
324
321
319
316
312
309
305
301
297
293
290
288
286
287
289
290

Sunday 14

Waning Crescent 19%

03:45

13:07

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
16 Bad
17 Bad

Sun - Rise: 08:17, Set: 16:01, Transit: 12:09. Moon - Rise: 03:45, Set: 13:07. Civil Dark: 16:42 - 07:36. Nautical Dark: 17:26 - 06:52. Astro Dark: 18:08 - 06:11

Total Clouds (% Sky Obscured)

100
100
100
100
99
100
100
100
94
87
82
75
69
62
75
87
100
100
100
100

Low Clouds (% Sky Obscured)

68
68
63
61
66
70
70
68
75
81
82
75
67
54
63
71
79
82
84
87

Medium Clouds (% Sky Obscured)

88
84
88
93
99
99
100
100
83
67
50
53
56
54
65
79
97
97
98
99

High Clouds (% Sky Obscured)

100
100
70
40
10
9
12
10
10
15
15
10
10
15
40
72
100
100
100
100

ISS Passover

Visibility (miles)

2
2
2
5
7
9
8
7
6
4
2
0
2
4
6
7
8
9
6
4

Fog (%)

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

Precipitation Probability (%)

95
95
95
80
70
80
73
67
77
63
53
61
61
70
61
52
42
61
95
95

Precipitation Amount (mm)

1.3
1
0.7
0.4
0
0.4
0.4
0.3
0.5
0.3
0
0.2
0
0.3
0.2
0
0
0
0.5
1.1

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

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

Pressure (mb)

1006
1005
1005
1005
1005
1004
1004
1004
1003
1003
1003
1003
1002
1002
1001
1001
1000
999
998
998

Ozone (du)

290
290
289
289
289
288
290
292
295
294
294
294
295
296
297
297
297
297
298
299

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

Generated: 08/12/25 22:55:05. Forecast: 08/12/25 to 14/12/25. Timezone: UTC+0.00