Clear Outside v1.0 - International Weather Forecasts For Astronomers

Wednesday 31

Waxing Gibbous 91%

13:19

06:33

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

Sun - Rise: 08:09, Set: 15:58, Transit: 12:04. Moon - Rise: 13:19, Set: 06:33. Civil Dark: 16:38 - 07:28. Nautical Dark: 17:22 - 06:44. Astro Dark: 18:03 - 06:03

Total Clouds (% Sky Obscured)

9
22
1
14
0
32
37
52
59
39
0
12
97
96
70
100
98
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

9
0
1
13
0
5
6
48
56
39
0
3
44
41
37
57
45
54
47
36
38
47
46
46

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
19
70
35
26
20
0
0
0
2
12
71

High Clouds (% Sky Obscured)

6
3
1
2
0
21
24
9
7
3
0
9
90
73
44
100
47
67
100
100
100
100
100
100

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
5
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
1
8
29
21
2
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)

9
10
10
11
11
11
11
10
11
11
12
14
15
17
17
17
19
17
16
16
16
17
18
17

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-1
-2
-3
-3
-3
-4
-4
-4
-4
-4
-4
-5
-6
-7
-5
-6
-5
-4
-3
-3
-2
-2
-2
-2

Dew Point (°C)

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

Relative Humidity (%)

86
88
88
88
86
84
86
89
91
89
87
87
84
83
80
78
83
93
76
71
71
71
70
69

Pressure (mb)

1025
1025
1024
1023
1023
1022
1021
1020
1019
1018
1017
1015
1013
1012
1011
1011
1010
1010
1010
1010
1009
1008
1008
1008

Ozone (du)

312
310
308
302
301
303
302
303
306
304
295
291
291
299
309
321
325
338
357
382
384
384
386
387

Thursday 1

Waxing Gibbous 97%

14:21

07:51

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

Sun - Rise: 08:08, Set: 16:00, Transit: 12:04. Moon - Rise: 14:21, Set: 07:51. Civil Dark: 16:39 - 07:28. Nautical Dark: 17:23 - 06:44. Astro Dark: 18:04 - 06:03

Total Clouds (% Sky Obscured)

100
100
100
96
78
61
15
10
6
10
13
15
42
54
99
96
21
1
1
1
0
1
5
5

Low Clouds (% Sky Obscured)

32
36
45
66
70
53
0
0
0
0
0
0
0
7
36
19
4
0
0
0
0
0
4
0

Medium Clouds (% Sky Obscured)

57
78
54
28
49
43
15
10
3
10
13
15
42
37
65
65
12
0
0
0
0
0
0
1

High Clouds (% Sky Obscured)

100
100
100
96
67
45
15
10
1
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
0
0
5
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
Light Rain
Snow
Snow
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

0
0
0
0
0
0
0
1
60
92
75
14
1
1
0
2
0
0
0
0
0
3
10
20

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0.5
1.2
0.5
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

16
16
16
15
16
16
16
15
14
11
12
10
12
11
12
13
11
11
12
14
15
15
15
15

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

69
71
73
74
76
74
73
74
83
98
100
94
88
89
89
91
92
89
84
81
79
77
76
80

Pressure (mb)

1007
1007
1007
1007
1007
1007
1007
1007
1006
1006
1006
1006
1006
1006
1006
1006
1006
1007
1007
1007
1007
1008
1008
1008

Ozone (du)

372
362
356
361
365
368
373
373
364
367
371
374
372
372
372
371
373
375
375
376
380
381
379
376

Friday 2

Waxing Gibbous 100%

15:42

08:47

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
08 Good
09 Good
10 Good
11 Good
12 Good
13 Good
14 Good
15 OK

Sun - Rise: 08:08, Set: 16:00, Transit: 12:04. Moon - Rise: 15:42, Set: 08:47. Civil Dark: 16:40 - 07:28. Nautical Dark: 17:24 - 06:44. Astro Dark: 18:05 - 06:03

Total Clouds (% Sky Obscured)

5
5
3
1
11
4
5
2
2
2
3
6
3
3
2
2
2
3
3
2
1
1
0
12

Low Clouds (% Sky Obscured)

0
0
0
0
3
1
0
1
1
1
1
1
1
0
1
0
0
1
1
1
1
0
0
11

Medium Clouds (% Sky Obscured)

5
5
1
0
11
2
2
0
0
0
0
0
0
0
0
0
0
2
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 (%)

2
0
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
8

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

81
83
81
81
81
81
81
79
81
81
81
79
79
79
78
79
79
78
77
75
75
73
73
73

Pressure (mb)

1009
1009
1010
1010
1010
1010
1011
1011
1011
1011
1011
1011
1011
1011
1011
1011
1012
1012
1013
1013
1013
1013
1013
1013

Ozone (du)

369
366
360
348
337
328
327
328
329
330
335
338
344
353
353
354
358
360
357
358
360
357
362
358

Saturday 3

Full Moon 99%

No Rise

09:24

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

Sun - Rise: 08:08, Set: 16:01, Transit: 12:05. Moon - Rise: No Rise, Set: 09:24. Civil Dark: 16:41 - 07:27. Nautical Dark: 17:25 - 06:44. Astro Dark: 18:06 - 06:03

Total Clouds (% Sky Obscured)

20
35
37
18
34
14
9
3
11
15
23
30
36
50
57
59
57
51
42
35
39
43
44
56

Low Clouds (% Sky Obscured)

19
35
33
18
28
14
9
3
6
8
10
6
3
0
0
0
0
0
0
1
0
0
0
1

Medium Clouds (% Sky Obscured)

2
35
37
0
0
0
0
0
0
0
0
17
33
50
48
50
52
42
37
28
26
33
31
30

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
9
15
23
30
36
50
53
23
0
6
11
17
13
7
0
0

ISS Passover

Visibility (miles)

9
6
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

Snow
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 (%)

46
36
4
0
1
0
1
1
0
0
0
0
0
0
1
2
2
2
1
0
0
0
0
0

Precipitation Amount (mm)

0.1
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
13
13
12
12
12
12
11
10
10
10
10
10
10
10
10
9
9
9
10
10
9
9
8

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

72
74
71
72
74
74
76
75
74
75
75
76
76
76
76
76
78
78
75
72
71
70
71
75

Pressure (mb)

1014
1014
1015
1015
1015
1016
1016
1017
1017
1017
1017
1017
1017
1018
1018
1018
1018
1019
1019
1019
1019
1019
1019
1019

Ozone (du)

351
347
347
345
346
351
351
346
342
340
338
341
345
350
358
362
368
373
378
382
382
383
384
380

Sunday 4

Waning Gibbous 96%

17:13

09:48

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

Sun - Rise: 08:07, Set: 16:02, Transit: 12:05. Moon - Rise: 17:13, Set: 09:48. Civil Dark: 16:42 - 07:27. Nautical Dark: 17:26 - 06:44. Astro Dark: 18:07 - 06:03

Total Clouds (% Sky Obscured)

68
75
78
81
76
74
77
78
56
30
5
5
4
4
8
6
3
1
1
0
1
1
1
11

Low Clouds (% Sky Obscured)

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

Medium Clouds (% Sky Obscured)

35
48
56
65
60
55
54
59
41
21
2
3
3
2
1
1
0
0
0
0
1
1
1
7

High Clouds (% Sky Obscured)

0
0
0
1
0
0
0
1
1
0
0
0
0
0
0
0
0
0
0
0
1
1
1
6

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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-4
-5
-5
-5
-5
-6
-5
-6
-6
-6
-6
-6
-6
-7
-7
-6
-6
-6
-6
-6
-7
-2
-2
-1

Dew Point (°C)

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

Relative Humidity (%)

84
86
86
84
82
79
81
82
84
84
82
82
81
82
84
86
87
87
84
83
80
81
83
84

Pressure (mb)

1019
1020
1020
1020
1020
1021
1021
1021
1021
1021
1022
1022
1022
1022
1023
1022
1022
1023
1023
1023
1024
1024
1024
1024

Ozone (du)

377
380
384
390
392
391
383
379
382
387
388
388
389
385
385
383
382
380
379
377
376
371
366
362

Monday 5

Waning Gibbous 91%

18:44

10:05

16 OK
17 OK
18 OK
19 OK
20 OK
21 OK
22 OK
23 OK
00 OK
01 OK
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

Sun - Rise: 08:07, Set: 16:03, Transit: 12:06. Moon - Rise: 18:44, Set: 10:05. Civil Dark: 16:43 - 07:27. Nautical Dark: 17:27 - 06:44. Astro Dark: 18:08 - 06:03

Total Clouds (% Sky Obscured)

22
35
30
23
17
16
15
14
21
30
42
62
82
100
100
100
100
100
100
100
100
100
100
93

Low Clouds (% Sky Obscured)

10
14
15
16
17
16
15
13
9
5
1
1
1
2
13
15
13
17
24
31
53
73
97
89

Medium Clouds (% Sky Obscured)

13
25
21
13
2
2
1
0
7
12
11
23
34
47
67
85
100
100
100
100
100
100
100
85

High Clouds (% Sky Obscured)

10
15
6
3
1
0
0
0
9
20
34
56
79
100
86
70
54
56
61
68
79
92
100
87

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
6
3
0
0
0
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
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain

Precipitation Probability (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
2
6
10
32
51
68
80
92
95
95

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.2
0.4
0.5
0.6
0.7
0.7

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

84
86
87
87
87
87
87
91
91
91
91
87
87
87
88
86
86
84
89
93
96
98
98
98

Pressure (mb)

1024
1024
1024
1024
1024
1024
1024
1024
1023
1023
1023
1023
1022
1022
1021
1021
1020
1019
1018
1017
1016
1015
1014
1013

Ozone (du)

363
364
366
363
359
356
356
356
356
352
347
343
347
351
355
356
357
358
363
369
375
378
380
383

Tuesday 6

Waning Gibbous 83%

20:10

10:18

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
09 Bad
10 Bad
11 Bad

Sun - Rise: 08:07, Set: 16:04, Transit: 12:06. Moon - Rise: 20:10, Set: 10:18. Civil Dark: 16:45 - 07:27. Nautical Dark: 17:28 - 06:43. Astro Dark: 18:09 - 06:02

Total Clouds (% Sky Obscured)

84
75
66
56
51
65
78
90
92
94
96
98
98
99
98
99
99
96
94
92

Low Clouds (% Sky Obscured)

81
73
66
56
50
60
70
79
79
79
79
56
40
38
68
89
93
77
61
45

Medium Clouds (% Sky Obscured)

73
70
60
56
51
56
48
37
46
57
68
63
59
54
64
60
60
60
65
60

High Clouds (% Sky Obscured)

73
65
37
17
0
1
2
3
5
5
9
26
46
79
85
90
95
95
90
81

ISS Passover

Visibility (miles)

3
6
9
9
9
9
8
7
5
7
8
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

Precipitation Type

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

Precipitation Probability (%)

93
78
55
34
6
4
3
1
7
10
5
13
19
33
29
19
21
44
58
64

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

2
2
2
2
1
1
1
1
2
2
2
2
2
2
2
2
2
2
3
3

Feels Like (°C)

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

Dew Point (°C)

2
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
3

Relative Humidity (%)

98
98
96
96
98
96
98
98
98
98
98
98
98
98
98
98
96
96
96
96

Pressure (mb)

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

Ozone (du)

390
397
403
402
400
398
395
391
388
384
379
374
379
383
388
371
354
338
329
320

Forecast for Bourn, Cambridgeshire, United Kingdom (52.20,-0.05)

Generated: 31/12/25 15:52:16. Forecast: 31/12/25 to 06/01/26. Timezone: UTC+0.00