Clear Outside v1.0 - International Weather Forecasts For Astronomers

Wednesday 31

Waxing Gibbous 91%

12:47

06:34

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

Sun - Rise: 08:11, Set: 16:05, Transit: 12:08. Moon - Rise: 12:47, Set: 06:34. Civil Dark: 16:45 - 07:31. Nautical Dark: 17:28 - 06:48. Astro Dark: 18:09 - 06:07

Total Clouds (% Sky Obscured)

40
28
16
0
1
4
2
1
1
1
2
0
0
12
42
12
57
64
44
24
52
100
100
89

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
12
42
12
57
63
35
19
6
38
53
31

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
24

High Clouds (% Sky Obscured)

0
2
3
0
1
4
2
1
1
1
2
0
0
2
3
12
3
5
36
24
52
100
100
82

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
2
2
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)

3
3
3
5
6
7
7
6
6
6
6
6
6
7
7
7
8
8
8
9
10
12
13
12

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-3
-2
-1
-0
1
1
1
1
-1
-1
-2
-1
-2
-2
-2
-2
-4
-3
-3
-4
-5
-6
-6
-5

Dew Point (°C)

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

Relative Humidity (%)

92
89
84
78
73
70
71
77
84
89
91
91
89
89
89
92
92
91
91
92
91
77
67
66

Pressure (mb)

1032
1032
1032
1031
1030
1029
1028
1028
1027
1027
1026
1025
1025
1024
1023
1022
1021
1020
1019
1018
1017
1015
1014
1013

Ozone (du)

306
305
307
308
308
307
308
309
308
307
304
300
300
301
302
302
303
306
307
303
301
302
302
308

Thursday 1

Waxing Gibbous 97%

13:29

07:51

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 OK
23 OK
00 OK
01 OK
02 OK
03 Bad
04 Bad
05 Bad
06 Bad
07 Bad

Sun - Rise: 08:11, Set: 16:06, Transit: 12:08. Moon - Rise: 13:29, Set: 07:51. Civil Dark: 16:46 - 07:31. Nautical Dark: 17:29 - 06:48. Astro Dark: 18:10 - 06:07

Total Clouds (% Sky Obscured)

99
71
100
100
100
100
96
64
80
78
82
71
65
52
9
12
29
14
0
0
0
14
64
83

Low Clouds (% Sky Obscured)

56
40
46
48
55
39
59
43
69
32
46
46
29
33
5
0
0
0
0
0
0
0
53
51

Medium Clouds (% Sky Obscured)

25
14
0
0
0
0
2
0
23
35
29
23
37
52
9
10
13
7
0
0
0
14
64
23

High Clouds (% Sky Obscured)

98
36
100
75
100
100
95
64
60
65
82
65
60
50
9
12
29
0
0
0
0
0
0
0

ISS Passover

Visibility (miles)

9
9
9
9
0
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
7
0
0
4

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
Sleet
Snow
None
None

Precipitation Probability (%)

0
3
10
30
3
0
1
0
2
5
7
7
0
0
0
0
0
0
9
40
82
85
33
14

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.6
0.7
0
0

Wind Speed/Direction (mph)

14
14
14
14
12
12
12
13
13
13
13
13
14
14
14
13
12
12
12
11
11
10
6
8

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

70
78
80
80
96
89
82
80
82
82
82
83
85
86
89
93
91
89
91
89
91
100
98
92

Pressure (mb)

1013
1013
1012
1012
1011
1010
1009
1009
1009
1009
1009
1009
1009
1009
1009
1009
1009
1008
1008
1008
1007
1007
1007
1007

Ozone (du)

317
319
330
349
380
388
392
393
389
381
378
377
375
371
366
366
367
366
367
369
365
362
364
369

Friday 2

Waxing Gibbous 100%

14:30

No Set

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

Sun - Rise: 08:11, Set: 16:07, Transit: 12:09. Moon - Rise: 14:30, Set: No Set. Civil Dark: 16:47 - 07:31. Nautical Dark: 17:30 - 06:48. Astro Dark: 18:11 - 06:07

Total Clouds (% Sky Obscured)

95
96
79
22
33
34
20
7
0
2
1
1
1
0
0
1
1
0
0
0
0
0
0
0

Low Clouds (% Sky Obscured)

87
85
0
22
33
34
20
0
0
1
0
1
1
0
0
1
0
0
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

25
29
26
0
0
0
4
7
0
2
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
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 (%)

25
35
20
2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
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
13
12
11
13
13
12
12
11
9
9
10
10
9
10
10
11
11
11
11
11
11
11
11

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

87
86
84
74
68
70
72
74
78
84
84
81
80
78
78
78
77
75
74
74
74
75
76
75

Pressure (mb)

1007
1007
1008
1007
1007
1007
1007
1007
1008
1008
1009
1009
1009
1009
1009
1009
1009
1009
1010
1010
1010
1010
1010
1010

Ozone (du)

371
372
377
380
378
376
377
376
374
372
363
355
352
350
348
350
350
350
354
361
364
371
378
373

Saturday 3

Full Moon 99%

15:51

08:48

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

Sun - Rise: 08:10, Set: 16:08, Transit: 12:09. Moon - Rise: 15:51, Set: 08:48. Civil Dark: 16:48 - 07:30. Nautical Dark: 17:31 - 06:48. Astro Dark: 18:12 - 06:07

Total Clouds (% Sky Obscured)

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

Low Clouds (% Sky Obscured)

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

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
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
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
12
12
13
12
12
11
9
8
7
7
6
6
6
6
6
6
6
6
5
5
5
5

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

-6
-6
-6
-6
-5
-6
-5
-5
-5
-5
-5
-6
-6
-5
-6
-6
-7
-6
-7
-7
-7
-7
-7
-7

Relative Humidity (%)

74
72
70
65
63
60
63
64
67
71
72
72
71
78
75
75
75
76
75
73
75
76
76
76

Pressure (mb)

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

Ozone (du)

370
367
367
362
359
356
355
352
350
351
349
344
342
343
346
351
352
346
343
340
339
341
342
341

Sunday 4

Waning Gibbous 96%

17:21

09:26

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

Sun - Rise: 08:10, Set: 16:09, Transit: 12:10. Moon - Rise: 17:21, Set: 09:26. Civil Dark: 16:49 - 07:30. Nautical Dark: 17:32 - 06:47. Astro Dark: 18:13 - 06:07

Total Clouds (% Sky Obscured)

7
10
14
17
11
7
3
8
12
23
39
42
45
45
46
47
42
37
32
51
71
90
79
67

Low Clouds (% Sky Obscured)

7
10
13
16
10
6
0
5
10
15
0
0
0
12
24
37
35
34
32
38
44
47
49
51

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
2
15
20
27
19
12
5
15
21
25
30
33
36
20
8

High Clouds (% Sky Obscured)

0
0
0
0
0
0
1
1
0
8
24
18
9
5
3
1
4
6
9
11
9
7
4
2

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
14
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

-7
-7
-7
-7
-5
-4
-3
-2
-2
-2
-2
-3
-3
-3
-3
-3
-4
-3
-4
-4
-3
-3
-3
-4

Relative Humidity (%)

76
75
67
61
63
66
70
78
89
91
92
92
91
92
91
91
89
89
87
87
89
89
89
89

Pressure (mb)

1019
1019
1020
1020
1019
1019
1019
1019
1019
1020
1020
1021
1021
1021
1021
1021
1021
1021
1022
1022
1022
1022
1022
1022

Ozone (du)

342
345
347
349
349
350
350
350
351
353
353
356
358
360
362
363
364
366
367
368
371
374
377
377

Monday 5

Waning Gibbous 90%

18:52

09:51

08 Bad
09 Bad
10 OK
11 Good
12 Good
13 Good
14 Good
15 Good
16 OK
17 OK
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

Sun - Rise: 08:10, Set: 16:11, Transit: 12:10. Moon - Rise: 18:52, Set: 09:51. Civil Dark: 16:50 - 07:30. Nautical Dark: 17:33 - 06:47. Astro Dark: 18:14 - 06:07

Total Clouds (% Sky Obscured)

56
37
19
4
8
13
7
11
24
44
53
62
72
79
83
86
84
79
78
81
84
91
89
85

Low Clouds (% Sky Obscured)

48
31
15
1
1
1
0
4
11
22
33
44
55
56
50
42
51
61
70
74
77
77
73
69

Medium Clouds (% Sky Obscured)

0
21
19
4
8
13
2
7
10
13
10
5
6
9
9
20
18
19
17
26
37
43
40
34

High Clouds (% Sky Obscured)

0
2
2
2
1
1
0
0
0
0
0
0
0
0
0
0
3
7
12
14
15
22
31
37

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 (%)

24
19
14
1
0
0
0
4
5
1
2
1
0
1
1
1
7
9
10
17
18
16
11
9

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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

87
86
78
71
65
69
71
75
78
81
86
86
87
86
86
86
86
87
86
86
86
86
86
87

Pressure (mb)

1023
1023
1024
1024
1025
1025
1025
1025
1025
1026
1026
1026
1026
1027
1027
1027
1027
1027
1027
1027
1027
1027
1027
1027

Ozone (du)

377
378
377
376
375
378
380
382
379
376
373
370
366
363
361
358
355
354
353
352
355
357
359
359

Tuesday 6

Waning Gibbous 83%

20:17

10:08

Sun - Rise: 08:09, Set: 16:12, Transit: 12:11. Moon - Rise: 20:17, Set: 10:08. Civil Dark: 16:51 - 07:29. Nautical Dark: 17:34 - 06:47. Astro Dark: 18:15 - 06:06

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 Culham, Oxfordshire, United Kingdom (51.66,-1.27)

Generated: 31/12/25 08:01:43. Forecast: 31/12/25 to 06/01/26. Timezone: UTC+0.00