Clear Outside v1.0 - International Weather Forecasts For Astronomers

Sunday 21

Waxing Crescent 2%

09:46

16:49

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
22 Bad
23 Bad
00 Bad
01 Bad
02 Bad
03 Bad
04 Bad

Sun - Rise: 08:06, Set: 15:57, Transit: 12:02. Moon - Rise: 09:46, Set: 16:49. Civil Dark: 16:37 - 07:26. Nautical Dark: 17:20 - 06:43. Astro Dark: 18:01 - 06:02

Total Clouds (% Sky Obscured)

95
95
97
95
94
91
94
99
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

78
62
66
83
70
47
50
89
61
66
61
58
79
92
95
87
84
95
79
83
81
64
69
44

Medium Clouds (% Sky Obscured)

47
95
97
91
79
78
82
98
95
95
96
100
100
93
98
100
100
100
99
100
100
100
100
93

High Clouds (% Sky Obscured)

78
95
97
82
70
77
66
68
97
100
100
100
100
100
100
100
100
100
100
100
100
100
68
100

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
5
9
9
9
9
4
5
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
Light Rain
Light Rain
Very Light Rain
Very Light Rain
Light Rain
Light Rain
Very Light Rain
None
Very Light Rain
None
None

Precipitation Probability (%)

0
0
0
2
1
1
1
2
15
18
43
50
47
68
74
66
61
74
82
59
48
47
28
4

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

95
95
96
100
100
96
95
93
93
93
93
93
93
95
95
95
91
91
95
96
93
91
91
93

Pressure (mb)

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

Ozone (du)

330
328
323
318
315
314
315
318
324
327
334
342
346
350
354
357
363
369
370
371
372
376
378
378

Monday 22

Waxing Crescent 6%

10:16

18:04

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
22 Bad
23 Bad
00 Bad
01 Bad
02 Bad
03 Bad
04 Bad

Sun - Rise: 08:07, Set: 15:58, Transit: 12:02. Moon - Rise: 10:16, Set: 18:04. Civil Dark: 16:38 - 07:27. Nautical Dark: 17:21 - 06:44. Astro Dark: 18:01 - 06:03

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
65
62
66
64
83
55
44
86
99
99
98
96
93
94
99
92
92

Low Clouds (% Sky Obscured)

42
33
61
68
68
53
49
29
28
26
18
25
30
26
43
51
51
82
93
87
94
99
91
92

Medium Clouds (% Sky Obscured)

98
100
100
100
100
100
92
50
49
62
44
52
7
7
34
47
23
19
25
18
5
5
5
2

High Clouds (% Sky Obscured)

100
100
100
100
100
93
94
65
55
48
48
78
55
34
35
84
95
88
35
22
18
17
10
25

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
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)

11
10
8
8
9
8
8
7
6
6
5
6
6
5
5
5
6
5
5
5
6
6
6
6

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

95
91
91
91
90
87
84
82
78
82
85
87
90
90
91
91
91
91
90
90
90
91
91
91

Pressure (mb)

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

Ozone (du)

378
377
377
375
374
375
377
380
383
384
384
385
385
384
384
383
378
370
366
363
361
359
357
357

Tuesday 23

Waxing Crescent 12%

10:38

19:21

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
22 Bad
23 Bad
00 Bad
01 Bad
02 Bad
03 Bad
04 Bad

Sun - Rise: 08:07, Set: 15:58, Transit: 12:03. Moon - Rise: 10:38, Set: 19:21. Civil Dark: 16:38 - 07:27. Nautical Dark: 17:21 - 06:44. Astro Dark: 18:02 - 06:03

Total Clouds (% Sky Obscured)

88
99
98
94
90
86
93
86
85
80
90
96
94
95
79
82
78
78
78
80
81
86
87
90

Low Clouds (% Sky Obscured)

88
98
95
88
86
86
93
86
85
80
87
94
93
94
79
82
78
78
76
78
81
86
85
85

Medium Clouds (% Sky Obscured)

1
4
23
21
6
4
4
4
4
4
4
0
0
0
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

26
45
45
45
10
3
1
3
2
2
2
2
3
4
2
1
1
0
0
0
0
0
12
25

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

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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

93
93
93
94
96
93
91
88
87
88
90
86
86
85
85
94
94
94
94
96
94
94
93
91

Pressure (mb)

1015
1015
1016
1017
1018
1018
1018
1018
1018
1019
1019
1020
1020
1021
1022
1022
1022
1023
1023
1023
1024
1024
1025
1025

Ozone (du)

357
354
354
351
348
345
343
339
341
343
344
343
343
340
338
336
334
337
339
337
335
335
332
331

Wednesday 24

Waxing Crescent 19%

10:54

20:39

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 OK
21 Bad
22 Bad
23 Bad
00 Bad
01 Bad
02 Bad
03 OK
04 OK

Sun - Rise: 08:07, Set: 15:59, Transit: 12:03. Moon - Rise: 10:54, Set: 20:39. Civil Dark: 16:39 - 07:27. Nautical Dark: 17:22 - 06:44. Astro Dark: 18:03 - 06:04

Total Clouds (% Sky Obscured)

89
82
77
70
65
64
59
53
60
63
66
63
54
52
51
43
52
62
68
61
55
46
36
28

Low Clouds (% Sky Obscured)

80
73
68
65
59
56
53
50
49
46
41
35
32
33
34
35
49
55
64
58
52
44
29
21

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
2
20
65
63
54
42
15
3
1
0
0
0
0
0
2
4

High Clouds (% Sky Obscured)

36
24
12
0
1
1
5
5
9
10
10
15
20
25
22
11
8
2
1
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 (%)

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

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

89
89
86
85
82
82
79
79
79
79
78
77
79
80
79
82
80
79
77
76
77
77
77
77

Pressure (mb)

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

Ozone (du)

329
326
323
322
322
323
325
328
327
327
326
327
328
329
332
333
332
333
337
338
335
334
334
334

Thursday 25

Waxing Crescent 28%

11:08

21:57

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

Sun - Rise: 08:08, Set: 16:00, Transit: 12:04. Moon - Rise: 11:08, Set: 21:57. Civil Dark: 16:40 - 07:28. Nautical Dark: 17:23 - 06:45. Astro Dark: 18:03 - 06:04

Total Clouds (% Sky Obscured)

22
21
20
20
40
62
82
79
76
73
62
48
36
22
25
21
27
38
56
67
76
84
89
95

Low Clouds (% Sky Obscured)

13
15
17
20
40
62
82
79
76
73
62
48
35
0
0
0
20
38
56
67
76
76
77
81

Medium Clouds (% Sky Obscured)

7
5
2
0
0
0
0
0
0
0
0
0
11
22
25
21
27
21
2
1
1
0
0
0

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
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 (%)

0
1
1
0
1
1
0
1
1
1
1
1
1
0
0
0
0
0
0
0
0
0
1
1

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

-2
-3
-3
-4
-4
-4
-4
-3
-2
-1
-0
-0
-1
-2
-2
-3
-4
-4
-5
-5
-5
-4
-4
-4

Relative Humidity (%)

77
76
73
70
68
64
62
62
66
69
75
79
79
77
76
73
70
69
66
66
67
70
71
73

Pressure (mb)

1032
1031
1031
1031
1031
1031
1030
1030
1029
1029
1029
1028
1028
1028
1029
1029
1029
1029
1029
1029
1028
1028
1028
1028

Ozone (du)

334
334
334
334
335
336
340
343
344
346
350
352
355
354
353
351
349
347
345
343
343
343
343
342

Friday 26

Waxing Crescent 39%

11:20

23:16

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
22 Bad
23 Bad
00 Bad
01 Bad
02 Bad
03 OK
04 OK

Sun - Rise: 08:08, Set: 16:00, Transit: 12:04. Moon - Rise: 11:20, Set: 23:16. Civil Dark: 16:40 - 07:28. Nautical Dark: 17:23 - 06:45. Astro Dark: 18:04 - 06:04

Total Clouds (% Sky Obscured)

100
95
100
100
95
95
94
91
84
81
80
80
79
80
76
77
81
85
85
77
62
60
37
16

Low Clouds (% Sky Obscured)

81
77
77
78
77
77
76
74
75
73
76
76
75
76
76
77
81
85
85
77
62
60
37
16

Medium Clouds (% Sky Obscured)

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

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1

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
1
0
0
1
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

75
77
78
78
80
76
73
69
72
73
76
79
83
86
86
86
86
84
84
83
85
85
86
86

Pressure (mb)

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

Ozone (du)

341
341
341
342
343
344
345
347
347
347
347
346
346
346
346
347
347
344
341
338
336
335
333
333

Saturday 27

First Quarter 50%

11:31

00:36

Sun - Rise: 08:08, Set: 16:01, Transit: 12:05. Moon - Rise: 11:31, Set: 00:36. Civil Dark: 16:41 - 07:28. Nautical Dark: 17:24 - 06:45. Astro Dark: 18:05 - 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 Shinfield, Wokingham, United Kingdom (51.42,-0.94)

Generated: 21/12/25 05:16:24. Forecast: 21/12/25 to 27/12/25. Timezone: UTC+0.00