Clear Outside v1.0 - International Weather Forecasts For Astronomers

Sunday 21

Waxing Crescent 2%

09:45

16:51

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: 08:06, Set: 15:59, Transit: 12:02. Moon - Rise: 09:45, Set: 16:51. Civil Dark: 16:38 - 07:26. Nautical Dark: 17:21 - 06:44. Astro Dark: 18:02 - 06:03

Total Clouds (% Sky Obscured)

97
98
98
97
95
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

69
78
78
58
55
61
74
64
66
64
79
95
95
85
89
94
79
79
77
59
69
78
65
50

Medium Clouds (% Sky Obscured)

97
97
80
83
89
100
96
100
100
100
100
82
99
100
100
100
97
100
100
100
100
100
100
77

High Clouds (% Sky Obscured)

97
97
71
86
68
65
97
100
100
100
100
100
100
100
83
100
100
100
100
93
100
100
100
100

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
4
9
9
8
7
9
9
9
9
9
9
9
9
9

Fog (%)

0
0
0
0
22
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
Very Light Rain
Light Rain
Very Light Rain
Very Light Rain
Light Rain
Very Light Rain
Very Light Rain
Light Rain
Very Light Rain
None
None
None
None
None
None
None

Precipitation Probability (%)

3
0
0
3
3
7
27
46
70
80
59
69
77
68
62
73
68
48
44
37
17
1
0
0

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0.3
0.6
0.2
0.2
0.4
0.3
0.3
0.4
0.3
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

4
4
5
7
10
11
10
9
10
9
9
10
11
12
13
12
12
13
12
10
9
11
12
10

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

5
5
5
6
6
6
7
7
7
6
6
5
5
6
6
6
7
6
6
6
7
6
5
5

Dew Point (°C)

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

Relative Humidity (%)

96
98
98
95
93
93
93
91
95
95
95
93
95
93
91
91
95
90
88
90
91
93
95
95

Pressure (mb)

1006
1007
1007
1008
1007
1007
1006
1006
1006
1006
1006
1005
1005
1005
1005
1005
1005
1005
1005
1005
1004
1004
1004
1005

Ozone (du)

327
321
318
317
317
320
324
328
337
342
349
352
355
359
367
372
373
373
375
379
380
380
379
379

Monday 22

Waxing Crescent 6%

10:16

18:05

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: 08:06, Set: 15:59, Transit: 12:03. Moon - Rise: 10:16, Set: 18:05. Civil Dark: 16:39 - 07:27. Nautical Dark: 17:22 - 06:44. Astro Dark: 18:02 - 06:04

Total Clouds (% Sky Obscured)

100
100
100
100
100
83
66
96
96
100
82
79
78
100
100
100
99
98
99
97
97
92
94
96

Low Clouds (% Sky Obscured)

71
67
60
48
42
42
52
61
63
68
62
42
38
57
77
83
97
96
99
97
97
92
94
96

Medium Clouds (% Sky Obscured)

93
100
100
92
86
67
66
54
20
2
24
27
32
26
40
25
19
16
4
5
5
3
3
3

High Clouds (% Sky Obscured)

100
100
92
99
100
71
45
85
66
95
38
40
33
86
99
100
29
27
8
5
7
14
16
15

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
10
55
90
94
100
100
100
100

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)

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

Chance of Frost

Temperature (°C)

8
7
7
8
9
9
10
10
10
9
8
7
7
6
6
6
6
6
6
6
6
6
6
5

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

93
90
88
84
80
80
78
83
87
91
93
91
91
93
93
93
93
93
93
93
94
94
93
94

Pressure (mb)

1005
1006
1007
1007
1007
1007
1007
1007
1008
1008
1009
1010
1011
1011
1012
1012
1012
1013
1013
1014
1014
1014
1015
1015

Ozone (du)

379
377
376
377
379
382
385
386
386
387
387
385
384
383
379
373
368
364
362
361
359
358
359
356

Tuesday 23

Waxing Crescent 12%

10:38

19:23

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: 08:07, Set: 16:00, Transit: 12:03. Moon - Rise: 10:38, Set: 19:23. Civil Dark: 16:40 - 07:27. Nautical Dark: 17:22 - 06:45. Astro Dark: 18:03 - 06:04

Total Clouds (% Sky Obscured)

100
95
90
95
95
95
87
80
89
100
98
100
88
90
83
82
91
90
90
88
89
89
89
85

Low Clouds (% Sky Obscured)

100
89
90
95
93
92
87
78
88
100
98
100
86
87
80
80
89
89
90
88
88
88
87
83

Medium Clouds (% Sky Obscured)

21
8
4
3
4
4
4
4
4
21
0
0
0
0
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

20
31
3
3
2
2
2
1
2
16
22
4
2
2
6
1
1
0
1
1
6
12
17
13

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 (%)

100
99
39
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
1
4
5
5
4
4
2
3

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
9
9
9
11
11
12
12
12
13
13
13
13
12
12
11
11
11
12
12
13
13
13
14

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

2
1
2
3
3
2
3
3
2
1
1
0
1
1
1
1
1
-0
-0
-1
-1
-1
-1
-1

Dew Point (°C)

4
4
5
5
5
5
5
5
5
4
4
3
4
4
4
4
4
4
4
4
4
4
3
3

Relative Humidity (%)

94
94
96
94
91
88
87
88
88
86
85
82
86
93
94
96
94
94
94
94
94
94
93
91

Pressure (mb)

1016
1017
1017
1018
1018
1018
1018
1018
1019
1019
1020
1021
1021
1022
1022
1022
1023
1023
1023
1024
1024
1025
1025
1026

Ozone (du)

354
354
351
348
345
343
342
344
346
346
345
342
340
339
336
337
339
337
336
335
334
332
330
328

Wednesday 24

Waxing Crescent 19%

10:54

20:40

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: 08:07, Set: 16:00, Transit: 12:04. Moon - Rise: 10:54, Set: 20:40. Civil Dark: 16:40 - 07:27. Nautical Dark: 17:23 - 06:45. Astro Dark: 18:04 - 06:04

Total Clouds (% Sky Obscured)

80
76
71
68
66
65
66
73
73
74
70
67
69
55
52
55
57
55
54
53
50
49
46
52

Low Clouds (% Sky Obscured)

78
74
69
64
62
60
46
42
38
36
34
34
34
36
37
39
44
43
44
44
40
35
33
45

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
35
65
60
45
38
12
2
0
0
0
0
0
2
4
7
8

High Clouds (% Sky Obscured)

8
2
2
2
1
5
4
5
10
10
15
15
11
8
3
1
1
0
0
0
0
0
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 (%)

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

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)

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

Chance of Frost

Temperature (°C)

4
4
5
5
5
6
5
5
5
4
3
3
3
3
3
3
2
2
2
2
2
1
1
1

Feels Like (°C)

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

Dew Point (°C)

3
2
1
1
2
1
1
1
1
0
-1
-2
-1
-1
-1
-2
-3
-3
-3
-3
-3
-3
-3
-3

Relative Humidity (%)

89
83
79
76
79
74
75
76
75
75
75
73
74
76
76
72
70
69
70
69
70
73
76
74

Pressure (mb)

1026
1027
1028
1028
1029
1029
1029
1029
1030
1030
1030
1031
1031
1031
1032
1032
1032
1032
1032
1032
1032
1031
1031
1031

Ozone (du)

325
322
322
323
324
327
329
328
328
328
330
330
333
335
333
335
339
340
337
337
336
336
336
336

Thursday 25

Waxing Crescent 28%

11:08

21:58

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

Sun - Rise: 08:08, Set: 16:01, Transit: 12:04. Moon - Rise: 11:08, Set: 21:58. Civil Dark: 16:41 - 07:28. Nautical Dark: 17:24 - 06:45. Astro Dark: 18:04 - 06:05

Total Clouds (% Sky Obscured)

53
60
71
83
95
95
95
100
97
95
92
36
38
45
50
65
85
88
92
96
97
99
100
100

Low Clouds (% Sky Obscured)

47
50
68
83
95
95
95
100
97
95
92
9
19
28
47
65
77
76
71
69
65
61
62
62

Medium Clouds (% Sky Obscured)

8
9
6
3
0
0
0
0
0
6
30
36
38
45
50
31
2
1
1
0
2
5
8
3

High Clouds (% Sky Obscured)

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

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 (%)

3
1
3
3
2
4
4
3
4
4
5
2
1
1
1
1
0
1
1
0
2
3
3
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)

15
15
16
16
17
17
18
18
18
18
17
17
14
13
13
12
12
12
12
12
12
12
11
11

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

-3
-4
-4
-4
-5
-4
-4
-3
-2
-1
-2
-3
-4
-5
-6
-6
-6
-6
-5
-4
-4
-3
-3
-2

Relative Humidity (%)

74
71
69
64
59
58
59
62
68
73
74
70
68
64
60
61
62
64
67
70
74
77
80
83

Pressure (mb)

1031
1031
1031
1031
1030
1029
1029
1028
1028
1028
1028
1028
1029
1029
1029
1028
1028
1028
1028
1028
1028
1028
1028
1028

Ozone (du)

337
338
340
344
347
348
346
350
356
360
362
358
356
354
352
350
348
345
345
344
343
342
341
340

Friday 26

Waxing Crescent 39%

11:20

23:16

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 OK
05 OK
06 Bad

Sun - Rise: 08:08, Set: 16:02, Transit: 12:05. Moon - Rise: 11:20, Set: 23:16. Civil Dark: 16:42 - 07:28. Nautical Dark: 17:24 - 06:45. Astro Dark: 18:05 - 06:05

Total Clouds (% Sky Obscured)

100
100
100
95
95
92
89
86
88
84
81
77
74
70
74
73
67
70
67
69
57
42
29
47

Low Clouds (% Sky Obscured)

62
58
58
63
67
56
58
61
61
58
59
59
73
70
74
73
67
70
67
69
57
42
29
47

Medium Clouds (% Sky Obscured)

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

High Clouds (% Sky Obscured)

1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
15

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
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

-2
-2
-2
-2
-2
-2
-1
-1
-1
-1
-1
-1
-1
-1
-1
-2
-2
-2
-1
-0
-0
0
-1
-1

Relative Humidity (%)

83
83
83
78
74
69
72
74
76
80
84
89
88
86
86
83
81
78
81
82
82
85
84
84

Pressure (mb)

1028
1029
1029
1029
1029
1029
1029
1029
1029
1030
1030
1031
1031
1032
1032
1032
1033
1033
1033
1033
1034
1034
1034
1034

Ozone (du)

342
343
344
345
346
347
347
348
349
348
348
347
348
348
349
347
345
343
341
339
337
337
337
336

Saturday 27

First Quarter 50%

11:32

00:36

Sun - Rise: 08:08, Set: 16:03, Transit: 12:05. Moon - Rise: 11:32, Set: 00:36. Civil Dark: 16:42 - 07:28. Nautical Dark: 17:25 - 06:46. Astro Dark: 18:06 - 06:05

Total Clouds (% Sky Obscured)

Low Clouds (% Sky Obscured)

Medium Clouds (% Sky Obscured)

High Clouds (% Sky Obscured)

ISS Passover

Visibility (miles)

Fog (%)

Precipitation Type

Precipitation Probability (%)

Precipitation Amount (mm)

Wind Speed/Direction (mph)

Chance of Frost

Temperature (°C)

Feels Like (°C)

Dew Point (°C)

Relative Humidity (%)

Pressure (mb)

Ozone (du)

Forecast for Cliddesden, Hampshire, United Kingdom (51.24,-1.10)

Generated: 21/12/25 07:27:56. Forecast: 21/12/25 to 27/12/25. Timezone: UTC+0.00