Clear Outside v1.0 - International Weather Forecasts For Astronomers

Thursday 25

Waxing Crescent 28%

10:59

21:49

03 OK
04 OK
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 Bad
18 Bad
19 Bad
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad
01 Bad
02 Bad

Sun - Rise: 07:59, Set: 15:52, Transit: 11:56. Moon - Rise: 10:59, Set: 21:49. Civil Dark: 16:32 - 07:19. Nautical Dark: 17:15 - 06:36. Astro Dark: 17:55 - 05:56

Total Clouds (% Sky Obscured)

19
24
26
28
31
26
23
45
50
56
57
48
49
58
74
61
66
61
65
59
69
70
74
80

Low Clouds (% Sky Obscured)

19
24
26
28
31
26
23
45
50
56
57
48
49
58
74
61
66
61
65
59
69
70
74
80

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
2
0
3
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)

25
24
24
25
24
23
22
22
21
21
21
19
18
18
17
16
15
14
13
12
11
11
11
11

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

49
49
47
47
47
47
46
46
47
48
51
53
55
57
57
58
60
60
62
63
65
68
70
70

Pressure (mb)

1029
1028
1028
1028
1028
1029
1029
1029
1029
1028
1028
1027
1027
1027
1027
1027
1027
1027
1028
1028
1028
1028
1028
1028

Ozone (du)

360
359
360
362
364
364
364
364
362
361
362
360
356
357
358
363
366
363
358
352
348
349
349
353

Friday 26

Waxing Crescent 38%

11:12

23:07

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
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad
01 Bad
02 Bad

Sun - Rise: 07:59, Set: 15:53, Transit: 11:56. Moon - Rise: 11:12, Set: 23:07. Civil Dark: 16:33 - 07:19. Nautical Dark: 17:16 - 06:37. Astro Dark: 17:56 - 05:56

Total Clouds (% Sky Obscured)

80
82
85
78
70
68
66
71
70
72
73
81
86
79
68
65
63
53
50
63
70
59
59
56

Low Clouds (% Sky Obscured)

80
82
85
78
70
68
66
71
70
72
73
81
86
79
68
65
63
53
44
57
63
51
59
56

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
2
0
0
0
0

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
1
2
1
7
9
4
14
15
15
20
2
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
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)

12
12
11
11
12
11
11
12
13
13
13
13
13
12
11
11
11
10
10
11
12
12
11
12

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

-1
-1
-1
0
0
0
1
0
-1
-1
-1
0
0
1
1
1
1
1
1
1
0
0
1
-1

Relative Humidity (%)

73
73
75
76
76
76
76
71
68
67
68
71
72
76
78
76
77
79
79
77
75
73
73
67

Pressure (mb)

1027
1027
1027
1027
1028
1028
1028
1029
1029
1029
1029
1029
1029
1029
1030
1030
1031
1031
1031
1032
1032
1032
1032
1033

Ozone (du)

352
350
350
352
355
354
353
349
345
342
339
336
333
329
327
324
322
319
315
314
312
312
311
311

Saturday 27

First Quarter 50%

11:23

00:27

03 OK
04 OK
05 Good
06 Good
07 Good
08 Good
09 OK
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

Sun - Rise: 07:59, Set: 15:54, Transit: 11:57. Moon - Rise: 11:23, Set: 00:27. Civil Dark: 16:33 - 07:20. Nautical Dark: 17:16 - 06:37. Astro Dark: 17:57 - 05:56

Total Clouds (% Sky Obscured)

38
30
7
0
0
0
24
64
66
67
80
94
100
96
95
95
95
72
76
77
88
90
85
71

Low Clouds (% Sky Obscured)

38
30
7
0
0
0
24
64
66
67
80
92
100
94
93
93
94
72
76
77
88
90
84
71

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
1
21
1
3
2
2
3
2
2
2
2
3
3
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
0
0
0
0
0
0
0
0
0
3
4
18
10
6
2
2
1
2
3
3
2
2
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)

12
12
13
15
15
16
16
16
16
16
16
17
17
18
17
17
18
17
15
16
15
15
15
14

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

59
59
60
59
61
65
69
73
75
75
81
84
82
79
80
78
74
74
79
69
70
69
66
68

Pressure (mb)

1033
1033
1032
1033
1033
1034
1034
1034
1034
1034
1034
1034
1034
1034
1034
1034
1034
1035
1035
1035
1035
1035
1034
1034

Ozone (du)

310
308
306
306
305
305
305
305
305
305
305
305
304
302
300
299
299
299
299
298
299
300
301
302

Sunday 28

Waxing Gibbous 61%

11:36

01:51

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

Sun - Rise: 08:00, Set: 15:55, Transit: 11:57. Moon - Rise: 11:36, Set: 01:51. Civil Dark: 16:34 - 07:20. Nautical Dark: 17:17 - 06:37. Astro Dark: 17:58 - 05:57

Total Clouds (% Sky Obscured)

81
84
86
90
94
98
99
99
99
88
81
71
71
73
68
58
57
49
47
42
38
42
47
52

Low Clouds (% Sky Obscured)

80
82
85
89
93
98
99
99
99
88
81
71
71
73
68
58
57
49
47
42
38
42
47
52

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
1
1
0
0
1
0
1
1
0
1
1
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 (%)

1
2
6
7
7
7
7
7
5
5
4
3
3
2
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)

15
16
16
15
13
12
12
13
12
12
11
11
11
11
10
10
9
8
8
7
7
6
6
7

Chance of Frost

Temperature (°C)

7
8
7
7
7
7
7
8
8
9
8
8
7
7
6
6
6
5
5
5
5
4
4
4

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

70
66
66
69
70
70
70
69
71
67
70
74
78
82
83
85
83
86
86
86
86
88
89
91

Pressure (mb)

1034
1034
1034
1033
1034
1034
1034
1033
1033
1033
1032
1032
1032
1032
1032
1032
1032
1032
1032
1032
1031
1031
1031
1031

Ozone (du)

301
300
299
300
300
300
300
300
300
300
299
298
297
296
295
295
294
293
293
291
289
287
286
285

Monday 29

Waxing Gibbous 72%

11:51

No Set

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
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad
01 Bad
02 Bad

Sun - Rise: 08:00, Set: 15:56, Transit: 11:58. Moon - Rise: 11:51, Set: No Set. Civil Dark: 16:35 - 07:20. Nautical Dark: 17:18 - 06:37. Astro Dark: 17:58 - 05:57

Total Clouds (% Sky Obscured)

59
70
74
83
91
95
94
88
83
81
80
86
84
80
76
92
85
86
86
82
81
71
69
66

Low Clouds (% Sky Obscured)

59
70
74
83
87
86
85
84
79
77
79
85
83
79
73
81
68
56
61
64
71
70
69
64

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
1
0
0
0
0
1
0
0
0
0
1
1
5
2
1
0
0
0
0
1
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
0
0
2
3
3
3
3
3
2
4
2
3
6
4
10
10
8
14
16
16
16
13
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

91
89
89
91
91
91
91
85
79
75
75
74
74
72
72
72
74
74
75
76
76
78
79
79

Pressure (mb)

1031
1031
1030
1030
1030
1031
1031
1031
1031
1031
1031
1030
1030
1030
1030
1030
1030
1030
1030
1030
1030
1030
1031
1031

Ozone (du)

285
284
285
284
287
289
290
289
290
290
290
291
290
289
287
286
285
284
283
283
283
282
282
283

Tuesday 30

Waxing Gibbous 82%

12:11

03:20

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
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad
01 Bad
02 Bad

Sun - Rise: 08:00, Set: 15:56, Transit: 11:58. Moon - Rise: 12:11, Set: 03:20. Civil Dark: 16:36 - 07:20. Nautical Dark: 17:19 - 06:37. Astro Dark: 17:59 - 05:57

Total Clouds (% Sky Obscured)

78
89
99
91
86
82
74
66
61
67
71
75
77
79
82
81
82
84
82
78
75
73
62
56

Low Clouds (% Sky Obscured)

76
87
99
91
86
82
74
66
61
67
71
70
66
60
57
64
68
70
67
63
71
73
62
56

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
1
0
0
0
2
9
9
13
14
14
14
13
17
24
25
14
13
17

High Clouds (% Sky Obscured)

2
2
3
4
5
6
5
5
3
2
2
3
3
2
2
4
8
9
6
4
1
1
2
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 (%)

11
10
5
12
12
6
14
14
11
12
10
4
17
9
4
10
6
2
8
8
6
13
16
17

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

82
78
71
67
67
66
65
62
60
59
59
59
59
59
59
59
65
71
77
79
82
83
86
88

Pressure (mb)

1031
1031
1031
1031
1031
1031
1032
1032
1032
1032
1031
1031
1031
1031
1031
1031
1031
1031
1031
1031
1030
1030
1030
1030

Ozone (du)

283
283
283
283
284
285
286
291
295
300
305
310
316
321
326
331
331
332
332
332
331
331
333
335

Wednesday 31

Waxing Gibbous 91%

12:39

04:52

Sun - Rise: 08:00, Set: 15:57, Transit: 11:59. Moon - Rise: 12:39, Set: 04:52. Civil Dark: 16:37 - 07:20. Nautical Dark: 17:20 - 06:37. Astro Dark: 18:00 - 05:57

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 Canterbury, Kent, United Kingdom (51.28,1.08)

Generated: 25/12/25 03:32:19. Forecast: 25/12/25 to 31/12/25. Timezone: UTC+0.00