Clear Outside v1.0 - International Weather Forecasts For Astronomers

Saturday 13

Waning Crescent 27%

02:16

12:41

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

Sun - Rise: 08:02, Set: 15:47, Transit: 11:54. Moon - Rise: 02:16, Set: 12:41. Civil Dark: 16:28 - 07:21. Nautical Dark: 17:11 - 06:37. Astro Dark: 17:53 - 05:55

Total Clouds (% Sky Obscured)

34
34
37
100
62
89
95
91
99
94
95
100
100
100
100
96
85
85
89
100
86
86
84
87

Low Clouds (% Sky Obscured)

34
34
36
38
40
40
32
40
40
42
44
50
50
52
52
68
67
70
64
59
63
72
70
74

Medium Clouds (% Sky Obscured)

23
12
5
45
12
45
72
33
28
29
31
40
32
94
56
27
20
24
21
7
24
19
16
16

High Clouds (% Sky Obscured)

16
14
30
100
43
4
9
61
96
34
57
92
100
100
100
72
36
26
62
80
72
67
66
78

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
1
1
1
0
0
0
1
1
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
11
12
13
13
14
14
14
14
14
15
15
15
16
16
16
17
18
17
17
17
17
17
17

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

5
5
5
4
4
4
5
5
5
5
5
5
5
5
6
6
6
5
5
5
5
5
5
6

Relative Humidity (%)

90
88
88
88
88
88
88
87
88
85
84
84
84
82
81
80
76
73
71
72
74
78
81
84

Pressure (mb)

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

Ozone (du)

313
309
306
302
300
299
299
299
299
300
302
302
302
300
297
294
294
292
291
290
290
290
290
290

Sunday 14

Waning Crescent 19%

03:29

12:53

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

Sun - Rise: 08:02, Set: 15:47, Transit: 11:55. Moon - Rise: 03:29, Set: 12:53. Civil Dark: 16:28 - 07:21. Nautical Dark: 17:12 - 06:38. Astro Dark: 17:53 - 05:56

Total Clouds (% Sky Obscured)

92
91
80
93
95
98
96
81
93
98
98
96
100
100
100
100
100
57
82
60
72
89
57
55

Low Clouds (% Sky Obscured)

81
75
57
84
88
89
92
77
92
98
98
95
100
100
100
100
100
55
81
58
71
89
52
50

Medium Clouds (% Sky Obscured)

11
26
22
18
26
40
24
2
12
23
26
2
1
0
0
0
0
0
0
0
1
25
30
1

High Clouds (% Sky Obscured)

71
53
60
44
66
22
6
5
4
4
2
2
2
0
0
0
0
0
0
0
0
35
45
50

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
8
0
0
0
0
0
1
14
2
3
4
2
20
7
0
1
1
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)

17
17
17
19
19
17
17
17
17
16
15
15
16
14
13
13
13
15
14
14
14
14
15
15

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

87
88
90
81
76
80
81
84
82
80
85
88
80
84
82
82
81
81
83
84
84
84
84
85

Pressure (mb)

1012
1012
1011
1011
1010
1009
1009
1008
1008
1007
1007
1007
1007
1007
1007
1006
1005
1005
1004
1004
1004
1005
1005
1005

Ozone (du)

290
291
292
292
292
291
292
292
293
295
296
298
300
301
302
304
306
308
310
312
317
323
326
328

Monday 15

Waning Crescent 12%

04:43

13:08

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

Sun - Rise: 08:03, Set: 15:47, Transit: 11:55. Moon - Rise: 04:43, Set: 13:08. Civil Dark: 16:28 - 07:22. Nautical Dark: 17:12 - 06:38. Astro Dark: 17:53 - 05:57

Total Clouds (% Sky Obscured)

71
73
84
99
100
100
100
100
100
100
100
100
100
100
100
100
96
92
88
80
71
58
30
21

Low Clouds (% Sky Obscured)

67
57
64
68
70
74
62
69
62
70
100
100
100
100
78
60
60
55
55
52
45
16
11
5

Medium Clouds (% Sky Obscured)

2
40
40
97
74
79
50
47
24
24
20
24
100
100
100
100
93
86
82
79
71
58
16
19

High Clouds (% Sky Obscured)

53
16
5
52
89
64
89
73
100
91
46
68
51
91
65
99
84
64
47
41
38
25
3
1

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
6
7
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
Light Rain
Light Rain
Light Rain
Light Rain
Very Light Rain
Light Rain
None
None
None
None
None
None
None

Precipitation Probability (%)

0
0
0
1
2
10
7
5
8
23
59
90
95
78
71
59
65
44
12
7
1
0
0
0

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0.8
1.2
0.4
0.4
0.3
0.5
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

15
15
14
13
12
13
12
12
11
10
9
8
8
9
10
10
10
9
9
9
8
7
6
5

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

84
81
82
87
90
85
87
84
82
84
87
88
91
90
91
88
90
87
88
87
85
87
91
91

Pressure (mb)

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

Ozone (du)

331
328
327
322
319
315
312
309
306
301
296
295
291
289
289
294
297
302
307
314
321
333
338
350

Tuesday 16

Waning Crescent 7%

05:57

13:28

20 Good
21 Good
22 OK
23 OK
00 OK
01 OK
02 OK
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

Sun - Rise: 08:04, Set: 15:47, Transit: 11:56. Moon - Rise: 05:57, Set: 13:28. Civil Dark: 16:28 - 07:23. Nautical Dark: 17:12 - 06:39. Astro Dark: 17:54 - 05:57

Total Clouds (% Sky Obscured)

0
7
12
16
19
21
22
79
79
91
93
96
100
100
100
100
98
96
94
96
98
100
100
100

Low Clouds (% Sky Obscured)

0
7
12
16
15
7
0
0
0
0
16
33
49
57
60
61
58
59
56
63
76
77
88
98

Medium Clouds (% Sky Obscured)

0
2
1
0
0
0
0
11
22
34
38
48
58
54
57
60
63
84
89
89
87
82
82
80

High Clouds (% Sky Obscured)

0
0
1
1
12
21
22
53
56
63
75
89
100
100
100
100
74
49
18
24
30
35
37
31

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
Light Rain
Light Rain
Light Rain
None
None
None
None
None
None

Precipitation Probability (%)

0
0
0
0
0
0
0
0
0
0
0
2
8
38
61
82
82
74
52
43
41
41
42
41

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.3
0.5
0.5
0.4
0
0
0
0
0
0

Wind Speed/Direction (mph)

5
4
4
4
4
3
4
5
6
7
8
9
10
11
12
13
14
16
16
17
17
17
17
17

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

89
88
89
91
91
91
89
89
89
89
89
88
88
83
82
78
75
72
74
74
75
77
78
79

Pressure (mb)

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

Ozone (du)

356
348
337
334
330
324
320
318
314
313
311
308
306
305
304
304
304
302
300
298
297
296
293
293

Wednesday 17

Waning Crescent 3%

07:08

13:57

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

Sun - Rise: 08:05, Set: 15:48, Transit: 11:56. Moon - Rise: 07:08, Set: 13:57. Civil Dark: 16:29 - 07:24. Nautical Dark: 17:13 - 06:40. Astro Dark: 17:54 - 05:58

Total Clouds (% Sky Obscured)

100
100
75
87
100
100
100
85
67
51
99
99
99
100
100
100
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

100
100
75
87
80
63
46
45
43
39
66
72
77
78
78
78
82
86
89
88
88
89
83
78

Medium Clouds (% Sky Obscured)

84
87
47
55
94
91
95
83
60
46
34
42
43
45
47
48
54
59
70
85
85
70
60
54

High Clouds (% Sky Obscured)

30
47
57
87
100
100
100
58
50
21
93
88
86
93
95
97
98
99
100
95
91
86
89
87

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
Very Light Rain

Precipitation Probability (%)

35
38
36
34
39
39
30
20
11
1
16
6
0
4
4
4
31
36
35
42
44
36
58
68

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
0.3

Wind Speed/Direction (mph)

16
15
15
14
13
13
12
12
11
10
10
10
11
11
13
15
16
18
20
22
23
23
23
23

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

81
82
82
85
84
84
81
80
80
81
82
87
90
95
91
88
84
81
78
76
77
77
78
77

Pressure (mb)

1014
1014
1014
1013
1013
1013
1013
1013
1013
1013
1013
1013
1013
1012
1011
1010
1009
1008
1006
1005
1004
1003
1002
1001

Ozone (du)

294
292
292
292
293
294
293
295
298
295
291
290
290
289
289
289
289
286
283
280
278
276
275
275

Thursday 18

Waning Crescent 1%

08:13

14:38

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

Sun - Rise: 08:05, Set: 15:48, Transit: 11:57. Moon - Rise: 08:13, Set: 14:38. Civil Dark: 16:29 - 07:24. Nautical Dark: 17:13 - 06:40. Astro Dark: 17:54 - 05:59

Total Clouds (% Sky Obscured)

100
100
100
100
90
81
74
72
73
74
70
65
67
67
68
70
79
89
98
80
64
50
43
34

Low Clouds (% Sky Obscured)

70
49
29
10
27
43
62
60
56
53
48
44
48
56
61
67
56
46
35
39
43
47
37
31

Medium Clouds (% Sky Obscured)

57
67
83
100
87
68
33
34
30
35
50
65
67
60
42
30
49
70
95
64
34
3
3
2

High Clouds (% Sky Obscured)

85
88
88
88
66
47
33
32
36
40
40
35
35
23
17
12
23
29
32
20
12
3
3
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

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

Precipitation Probability (%)

67
68
60
54
56
53
46
43
31
10
4
0
0
0
0
0
0
1
0
1
0
0
0
0

Precipitation Amount (mm)

0.3
0.3
0.2
0.2
0.2
0.2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

22
23
22
22
22
20
18
17
17
16
16
16
16
15
15
15
16
14
13
12
11
11
10
10

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

77
77
78
80
81
81
78
78
78
77
77
77
78
79
78
77
74
76
77
80
81
84
87
87

Pressure (mb)

1001
1000
1000
1000
1000
1001
1001
1001
1002
1002
1003
1004
1005
1006
1006
1007
1008
1008
1009
1010
1010
1011
1012
1013

Ozone (du)

276
276
277
277
278
284
289
295
299
303
306
312
318
324
330
337
344
353
362
371
378
384
391
383

Friday 19

Waning Crescent 0%

09:07

15:32

20 OK
21 OK
22 OK
23 OK
00 OK
01 OK
02 OK
03 OK
04 OK
05 OK
06 Bad
07 Bad
08 Bad
09 Bad
10 Bad
11 Bad

Sun - Rise: 08:06, Set: 15:48, Transit: 11:57. Moon - Rise: 09:07, Set: 15:32. Civil Dark: 16:29 - 07:25. Nautical Dark: 17:13 - 06:41. Astro Dark: 17:55 - 05:59

Total Clouds (% Sky Obscured)

23
27
31
35
32
31
29
24
26
28
46
61
74
79
85
86

Low Clouds (% Sky Obscured)

23
27
31
35
32
31
29
24
26
28
26
16
18
14
13
12

Medium Clouds (% Sky Obscured)

2
3
3
3
2
1
0
0
0
0
5
10
16
31
49
60

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
1
2
27
53
74
79
85
80

ISS Passover

Visibility (miles)

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

Precipitation Type

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

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

6
6
6
6
5
5
5
5
5
5
4
5
5
5
6
6

Feels Like (°C)

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

Dew Point (°C)

4
4
4
4
4
4
4
4
4
3
3
3
4
4
4
4

Relative Humidity (%)

87
86
88
90
91
91
91
91
91
91
91
91
93
93
88
85

Pressure (mb)

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

Ozone (du)

375
367
351
335
319
312
304
297
293
290
286
286
286
286
286
286

Forecast for Castle, Cambridgeshire, United Kingdom (52.21,0.10)

Generated: 13/12/25 20:22:24. Forecast: 13/12/25 to 19/12/25. Timezone: UTC+0.00