Clear Outside v1.0 - International Weather Forecasts For Astronomers

Thursday 18

Waning Crescent 1%

08:02

14:41

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

Sun - Rise: 07:56, Set: 15:49, Transit: 11:53. Moon - Rise: 08:02, Set: 14:41. Civil Dark: 16:29 - 07:17. Nautical Dark: 17:12 - 06:34. Astro Dark: 17:52 - 05:53

Total Clouds (% Sky Obscured)

92
94
95
100
100
100
100
100
100
100
100
100
100
100
100
98
29
90
28
26
22
8
0
3

Low Clouds (% Sky Obscured)

88
94
74
100
67
70
57
0
0
0
0
0
0
0
0
0
17
38
28
26
22
8
0
3

Medium Clouds (% Sky Obscured)

73
92
95
100
98
95
96
99
98
100
100
100
99
93
79
60
1
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

79
94
68
100
100
100
100
100
100
100
100
76
95
99
82
76
16
76
0
0
0
0
0
0

ISS Passover

Visibility (miles)

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

Precipitation Probability (%)

42
3
33
60
53
57
44
9
13
0
0
0
0
0
0
0
1
0
0
0
2
1
0
2

Precipitation Amount (mm)

0.2
0
0
0.2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

24
21
19
19
20
17
14
14
12
11
10
10
11
11
12
13
13
14
14
12
11
9
8
8

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

11
11
11
11
11
11
10
9
8
6
5
4
5
5
5
6
6
7
7
7
6
6
6
6

Relative Humidity (%)

92
93
92
93
93
90
90
85
88
84
82
81
85
84
81
78
77
76
76
80
84
88
90
93

Pressure (mb)

1004
1004
1005
1005
1006
1006
1008
1008
1010
1011
1012
1014
1015
1016
1016
1017
1017
1017
1017
1018
1018
1018
1019
1019

Ozone (du)

292
300
315
328
335
333
331
327
328
323
326
336
344
348
354
351
359
363
358
356
354
339
322
309

Friday 19

Waning Crescent 0%

08:56

15:35

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

Sun - Rise: 07:57, Set: 15:49, Transit: 11:53. Moon - Rise: 08:56, Set: 15:35. Civil Dark: 16:29 - 07:17. Nautical Dark: 17:12 - 06:34. Astro Dark: 17:53 - 05:54

Total Clouds (% Sky Obscured)

7
17
24
35
41
50
40
35
46
62
61
53
38
66
69
78
85
90
85
89
93
98
98
100

Low Clouds (% Sky Obscured)

7
17
24
35
41
50
40
35
46
62
57
47
38
35
26
40
36
40
54
58
71
86
89
85

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
2
61
50
0
13
34
42
45
42
50
45
40
39
38
34

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
4
0
0
0
34
0
9
80
80
80
61
66
1
2
5

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
4
6
6
7
8
5
4
3
1
0
0
0
0
0
0
0
0
2
16
32
36
25
18

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

91
93
93
93
91
91
93
93
94
94
94
93
91
90
85
79
78
80
79
84
91
93
88
79

Pressure (mb)

1019
1019
1019
1019
1019
1018
1018
1017
1017
1016
1016
1016
1016
1015
1015
1014
1013
1012
1012
1011
1011
1010
1010
1010

Ozone (du)

300
296
291
287
285
288
293
301
302
300
300
298
293
291
288
284
284
289
292
295
296
301
304
306

Saturday 20

New Moon 2%

09:37

16:42

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: 07:58, Set: 15:50, Transit: 11:54. Moon - Rise: 09:37, Set: 16:42. Civil Dark: 16:30 - 07:18. Nautical Dark: 17:13 - 06:35. Astro Dark: 17:53 - 05:54

Total Clouds (% Sky Obscured)

98
98
98
99
99
100
95
92
95
92
94
100
100
100
100
100
98
95
93
93
94
95
92
89

Low Clouds (% Sky Obscured)

87
91
84
82
75
78
61
64
74
69
72
66
63
64
71
80
79
77
74
63
52
41
37
32

Medium Clouds (% Sky Obscured)

42
34
29
29
28
30
69
56
59
76
70
75
99
95
99
97
96
94
92
92
91
77
89
85

High Clouds (% Sky Obscured)

16
15
1
2
1
25
38
57
74
59
66
100
100
100
100
100
83
66
45
49
59
70
63
59

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 (%)

15
8
7
5
7
18
12
13
6
11
12
11
9
13
32
46
55
50
25
20
25
22
20
5

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

82
91
94
93
91
90
88
87
93
98
96
95
95
95
93
91
90
88
88
87
87
90
90
87

Pressure (mb)

1009
1009
1009
1008
1008
1007
1007
1007
1007
1007
1007
1007
1007
1007
1007
1007
1006
1006
1006
1006
1006
1006
1007
1007

Ozone (du)

306
310
312
310
308
301
298
302
308
309
311
313
317
321
326
330
335
343
361
375
377
378
381
385

Sunday 21

Waxing Crescent 6%

10:07

17:56

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: 07:58, Set: 15:50, Transit: 11:54. Moon - Rise: 10:07, Set: 17:56. Civil Dark: 16:30 - 07:18. Nautical Dark: 17:13 - 06:35. Astro Dark: 17:54 - 05:55

Total Clouds (% Sky Obscured)

87
85
84
84
77
70
64
77
89
100
94
88
83
87
90
93
89
85
79
83
86
88
92
93

Low Clouds (% Sky Obscured)

27
18
9
0
0
4
5
10
10
10
10
10
15
30
44
59
57
66
72
76
80
81
82
75

Medium Clouds (% Sky Obscured)

77
80
82
81
58
68
64
59
63
71
72
71
69
59
48
49
47
48
40
60
71
8
6
4

High Clouds (% Sky Obscured)

54
55
56
57
45
36
28
55
79
100
88
77
66
68
68
69
46
34
15
1
10
0
28
57

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
8
9
9
7
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
5
6
2
0
0
1
14
20
51
47
38
41
42
30
19
5
3
15
19
9
4
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

84
85
88
88
87
85
85
84
85
84
85
87
87
88
90
87
75
74
79
82
82
84
84
85

Pressure (mb)

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

Ozone (du)

387
391
393
395
395
396
397
399
399
399
398
397
396
398
398
400
403
405
408
409
410
413
416
417

Monday 22

Waxing Crescent 12%

10:29

19:13

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: 07:58, Set: 15:51, Transit: 11:55. Moon - Rise: 10:29, Set: 19:13. Civil Dark: 16:31 - 07:19. Nautical Dark: 17:14 - 06:36. Astro Dark: 17:54 - 05:55

Total Clouds (% Sky Obscured)

95
95
90
85
85
81
91
98
99
100
92
85
73
71
74
77
95
94
96
94
92
90
87
83

Low Clouds (% Sky Obscured)

70
71
71
67
69
72
76
92
91
90
92
85
73
71
74
77
94
88
77
76
74
68
68
51

Medium Clouds (% Sky Obscured)

0
14
28
46
45
39
27
19
31
44
76
67
57
51
37
29
38
47
57
56
52
51
49
45

High Clouds (% Sky Obscured)

85
58
33
4
19
35
55
67
81
95
48
32
19
37
50
64
62
56
53
41
28
16
13
12

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
1
2
3
1
1
2
0
4
5
4
10
12
14
15
18
21
18
15
10
10
10

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

4
4
4
4
4
4
4
4
5
5
5
4
4
4
4
4
4
4
4
4
4
4
4
4

Relative Humidity (%)

90
91
90
91
90
90
88
88
91
90
90
90
90
91
88
84
79
82
84
85
86
88
91
90

Pressure (mb)

1013
1013
1013
1013
1013
1014
1014
1014
1014
1014
1014
1015
1015
1016
1016
1016
1016
1016
1016
1016
1017
1017
1017
1018

Ozone (du)

417
416
417
418
418
415
413
412
411
413
413
413
414
414
413
412
411
409
407
405
404
404
403
401

Tuesday 23

Waxing Crescent 19%

10:46

No Set

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: 07:59, Set: 15:52, Transit: 11:55. Moon - Rise: 10:46, Set: No Set. Civil Dark: 16:31 - 07:19. Nautical Dark: 17:14 - 06:36. Astro Dark: 17:55 - 05:55

Total Clouds (% Sky Obscured)

78
80
81
80
85
92
98
99
99
100
99
97
96
96
96
96
97
99
100
99
97
98
95
95

Low Clouds (% Sky Obscured)

43
40
37
37
57
73
92
96
99
100
98
97
96
96
96
95
96
98
100
99
97
98
95
90

Medium Clouds (% Sky Obscured)

49
38
27
13
10
7
4
17
27
36
45
55
64
57
44
34
27
16
6
18
30
45
50
50

High Clouds (% Sky Obscured)

9
10
13
10
2
2
2
2
1
1
2
10
7
8
9
10
10
8
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
Very Light Rain
Very Light Rain
Light Rain

Precipitation Probability (%)

7
13
14
8
19
22
24
26
27
27
28
27
27
26
24
21
19
18
16
36
46
51
60
73

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

12
12
12
13
13
14
16
17
18
18
19
20
20
20
21
22
22
22
22
22
22
22
22
21

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

90
89
91
91
91
91
91
90
88
85
82
83
85
86
85
83
83
79
75
72
72
69
69
68

Pressure (mb)

1018
1019
1019
1019
1019
1020
1020
1020
1021
1021
1021
1021
1022
1022
1022
1022
1022
1022
1022
1021
1021
1021
1021
1021

Ozone (du)

399
396
396
395
395
394
394
393
395
397
399
397
395
394
393
392
391
388
384
381
380
379
378
378

Wednesday 24

Waxing Crescent 28%

10:59

20:31

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

Sun - Rise: 07:59, Set: 15:52, Transit: 11:56. Moon - Rise: 10:59, Set: 20:31. Civil Dark: 16:32 - 07:19. Nautical Dark: 17:15 - 06:36. Astro Dark: 17:55 - 05:56

Total Clouds (% Sky Obscured)

93
83
68
55
47
43
39
38
33
28
28
28
32
32
32
44

Low Clouds (% Sky Obscured)

85
83
68
55
47
43
39
38
33
28
28
28
32
32
32
42

Medium Clouds (% Sky Obscured)

45
38
23
9
4
3
2
4
4
4
11
22
32
30
32
23

High Clouds (% Sky Obscured)

0
0
0
0
22
40
39
38
25
0
3
5
8
15
23
30

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

Snow
Snow
Snow
Snow
Snow
Snow
Snow
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

86
83
77
68
61
54
43
36
26
6
6
4
0
0
0
0

Precipitation Amount (mm)

0.5
0.5
0.5
0.4
0.3
0.2
0.1
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

20
20
20
20
19
20
20
20
20
20
20
19
20
20
20
20

Chance of Frost

Temperature (°C)

3
2
2
2
3
3
3
3
3
3
3
3
3
3
3
4

Feels Like (°C)

-5
-5
-5
-5
-5
-5
-5
-5
-5
-5
-5
-5
-5
-4
-4
-4

Dew Point (°C)

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

Relative Humidity (%)

65
64
63
62
61
61
59
58
59
59
58
59
61
62
62
62

Pressure (mb)

1021
1021
1021
1021
1021
1021
1021
1021
1021
1021
1021
1021
1021
1022
1022
1022

Ozone (du)

378
377
373
370
366
365
364
363
360
356
353
351
349
347
346
346

Forecast for Canterbury, Kent, United Kingdom (51.28,1.08)

Generated: 18/12/25 20:04:09. Forecast: 18/12/25 to 24/12/25. Timezone: UTC+0.00