Clear Outside v1.0 - International Weather Forecasts For Astronomers

Saturday 20

New Moon 2%

09:35

15:35

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
03 Bad
04 Bad
05 Bad
06 Bad
07 Bad
08 Bad
09 Bad
10 Bad
11 Bad
12 Bad

Sun - Rise: 07:56, Set: 15:49, Transit: 11:53. Moon - Rise: 09:35, Set: 15:35. Civil Dark: 16:29 - 07:16. Nautical Dark: 17:11 - 06:33. Astro Dark: 17:52 - 05:53

Total Clouds (% Sky Obscured)

85
85
91
87
96
96
90
88
93
95
94
100
92
98
100
98
91
52
65
100
100
100
100
100

Low Clouds (% Sky Obscured)

44
59
66
47
47
46
54
54
72
81
91
100
82
69
75
78
59
52
65
62
50
50
69
73

Medium Clouds (% Sky Obscured)

83
31
22
87
96
96
90
88
93
75
25
31
17
36
59
19
8
3
33
35
75
100
100
100

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
1
16
16
32
28
49
72
84
86
68
17
43
100
89
100
68
100

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
2
21
55

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
Light Rain

Precipitation Probability (%)

6
9
1
2
6
10
29
26
17
33
24
8
16
2
1
4
1
0
0
0
1
12
48
84

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
0.6

Wind Speed/Direction (mph)

9
9
9
9
10
10
10
10
10
9
8
8
8
9
9
6
7
6
7
6
7
9
11
11

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

78
78
84
87
85
88
88
90
94
96
96
98
95
88
84
87
88
93
95
96
95
90
91
90

Pressure (mb)

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

Ozone (du)

283
280
276
272
269
270
270
273
273
275
279
283
291
292
295
301
310
317
327
329
324
322
323
322

Sunday 21

Waxing Crescent 2%

10:05

16:42

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
03 Bad
04 Bad
05 Bad
06 Bad
07 Bad
08 Bad
09 Bad
10 Bad
11 Bad
12 Bad

Sun - Rise: 07:56, Set: 15:50, Transit: 11:53. Moon - Rise: 10:05, Set: 16:42. Civil Dark: 16:29 - 07:17. Nautical Dark: 17:12 - 06:34. Astro Dark: 17:52 - 05:53

Total Clouds (% Sky Obscured)

100
100
100
100
98
100
100
98
95
99
100
96
100
100
100
100
100
100
100
100
100
76
77
75

Low Clouds (% Sky Obscured)

78
88
94
96
88
84
60
64
50
48
44
27
41
40
47
51
33
0
0
0
10
4
30
26

Medium Clouds (% Sky Obscured)

100
81
100
70
61
66
72
53
94
84
100
93
91
57
48
99
99
68
76
100
100
73
62
48

High Clouds (% Sky Obscured)

67
100
100
95
72
81
100
88
37
20
100
69
100
100
100
100
100
100
100
93
54
45
54
37

ISS Passover

Visibility (miles)

5
7
4
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9

Fog (%)

59
11
2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Type

Light Rain
Very Light Rain
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 (%)

77
58
48
58
46
27
22
29
24
21
26
20
18
22
14
0
0
0
0
0
0
0
0
0

Precipitation Amount (mm)

0.4
0.2
0
0.3
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
10
12
11
9
11
10
9
10
11
11
11
11
12
12
10
9
10
10
9
5
5
5
5

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

95
96
96
95
95
93
90
88
88
85
85
85
85
84
84
85
87
87
88
90
90
85
85
84

Pressure (mb)

1007
1007
1007
1006
1006
1006
1006
1006
1006
1005
1005
1005
1005
1005
1005
1005
1005
1005
1005
1006
1007
1007
1007
1007

Ozone (du)

321
319
319
317
316
320
324
328
330
333
334
336
340
341
345
347
350
353
356
356
357
358
359
362

Monday 22

Waxing Crescent 6%

10:27

17:56

13 Bad
14 OK
15 Bad
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
12 Bad

Sun - Rise: 07:57, Set: 15:50, Transit: 11:54. Moon - Rise: 10:27, Set: 17:56. Civil Dark: 16:30 - 07:17. Nautical Dark: 17:13 - 06:34. Astro Dark: 17:53 - 05:54

Total Clouds (% Sky Obscured)

89
45
60
70
88
100
85
78
71
69
64
67
57
70
67
88
95
96
99
100
100
100
99
99

Low Clouds (% Sky Obscured)

5
0
0
0
38
40
32
29
0
7
14
45
57
70
67
85
90
93
97
100
100
100
99
99

Medium Clouds (% Sky Obscured)

89
45
50
70
19
29
20
16
15
13
11
13
9
13
12
13
11
14
19
93
86
13
9
14

High Clouds (% Sky Obscured)

47
30
47
39
68
89
48
32
31
31
23
12
2
4
2
9
22
48
73
100
97
94
86
89

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
78
91
91
91
91
91
91
91
91
91
91
91
91
91

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
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)

5
5
5
6
5
4
5
5
6
6
6
6
7
8
8
9
10
10
10
10
11
12
12
13

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

8
8
7
5
5
5
5
5
4
4
3
3
3
4
4
4
3
2
3
3
2
3
3
3

Dew Point (°C)

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

Relative Humidity (%)

80
82
87
90
91
91
91
90
90
88
90
88
88
90
90
91
90
88
90
90
87
84
82
81

Pressure (mb)

1007
1007
1008
1008
1009
1009
1010
1010
1011
1011
1011
1011
1012
1012
1012
1012
1013
1013
1014
1014
1015
1015
1015
1015

Ozone (du)

364
368
370
371
373
375
376
376
374
373
373
372
369
369
368
366
364
361
358
358
356
355
354
353

Tuesday 23

Waxing Crescent 12%

10:44

19:13

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
03 Bad
04 Bad
05 Bad
06 Bad
07 Bad
08 Bad
09 Bad
10 Bad
11 Bad
12 Bad

Sun - Rise: 07:57, Set: 15:51, Transit: 11:54. Moon - Rise: 10:44, Set: 19:13. Civil Dark: 16:30 - 07:17. Nautical Dark: 17:13 - 06:35. Astro Dark: 17:54 - 05:54

Total Clouds (% Sky Obscured)

99
98
99
100
100
100
100
100
100
100
100
100
100
100
98
96
95
91
87
82
60
59
48
44

Low Clouds (% Sky Obscured)

99
98
99
100
100
100
100
100
100
100
100
100
100
100
98
96
94
89
84
81
60
48
36
44

Medium Clouds (% Sky Obscured)

20
25
19
10
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
3
10
0

High Clouds (% Sky Obscured)

93
96
81
66
52
35
17
1
0
1
1
0
0
0
1
0
0
0
0
1
2
5
10
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 (%)

91
91
91
91
91
91
91
91
91
91
91
91
91
91
91
91
91
91
91
91
91
91
91
91

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
1
2
3
3
7
9
11
11
14
16
18
21
22
20
19
8
7
7
6
5
4
0
4

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)

13
13
13
13
14
15
14
14
15
15
14
15
16
17
17
17
18
18
19
19
20
21
21
21

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

81
81
82
84
81
78
79
76
76
76
81
81
79
78
79
78
78
78
80
79
75
73
72
72

Pressure (mb)

1016
1016
1016
1017
1018
1018
1018
1019
1019
1020
1020
1020
1021
1021
1021
1022
1022
1023
1024
1024
1025
1026
1026
1026

Ozone (du)

350
349
349
349
351
353
355
352
347
343
338
334
334
332
332
334
336
336
336
333
333
336
339
342

Wednesday 24

Waxing Crescent 19%

10:58

20:31

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
03 Bad
04 Bad
05 Bad
06 Bad
07 Bad
08 Bad
09 Bad
10 Bad
11 Bad
12 Bad

Sun - Rise: 07:57, Set: 15:51, Transit: 11:55. Moon - Rise: 10:58, Set: 20:31. Civil Dark: 16:31 - 07:18. Nautical Dark: 17:14 - 06:35. Astro Dark: 17:54 - 05:55

Total Clouds (% Sky Obscured)

54
60
53
43
37
53
69
80
81
80
80
84
83
72
67
58
53
55
56
39
34
34
39
63

Low Clouds (% Sky Obscured)

51
59
53
43
37
53
69
80
81
78
78
83
83
72
67
58
53
55
56
39
34
34
39
63

Medium Clouds (% Sky Obscured)

0
0
0
0
0
11
25
34
45
51
55
53
41
35
30
34
37
39
37
29
22
13
8
29

High Clouds (% Sky Obscured)

2
1
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 (%)

91
91
91
91
91
91
91
91
91
91
91
91
91
91
91
91
91
91
91
91
91
91
91
91

Precipitation Type

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

Precipitation Probability (%)

4
3
17
21
14
19
20
18
32
40
47
77
76
72
69
70
65
54
45
39
34
28
21
27

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

22
22
22
22
22
22
22
22
21
21
20
20
20
20
19
20
20
20
20
21
21
20
18
18

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

69
67
66
62
57
54
53
53
53
53
54
54
53
52
51
52
52
52
52
52
52
51
49
48

Pressure (mb)

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

Ozone (du)

346
348
352
355
359
361
362
361
359
357
356
354
355
356
356
358
360
362
368
374
380
381
382
384

Thursday 25

Waxing Crescent 28%

11:11

21:48

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
03 Bad
04 Bad
05 Bad
06 Bad
07 Bad
08 Bad
09 Bad
10 Bad
11 Bad
12 Bad

Sun - Rise: 07:58, Set: 15:52, Transit: 11:55. Moon - Rise: 11:11, Set: 21:48. Civil Dark: 16:32 - 07:18. Nautical Dark: 17:14 - 06:35. Astro Dark: 17:55 - 05:55

Total Clouds (% Sky Obscured)

81
100
100
100
100
100
100
100
100
100
100
100
100
100
100
97
96
96
97
100
100
100
100
97

Low Clouds (% Sky Obscured)

81
100
100
100
100
100
100
100
100
100
100
100
100
100
100
97
96
96
97
100
100
100
100
95

Medium Clouds (% Sky Obscured)

51
77
60
40
23
19
10
0
11
21
32
20
9
3
7
10
15
22
37
52
38
16
3
2

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
1
1
5
8
14
12
9
8
6

ISS Passover

Visibility (miles)

6
3
0
3
6
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9

Fog (%)

91
91
91
91
91
91
91
91
91
91
91
91
91
91
91
91
91
91
91
91
91
91
91
91

Precipitation Type

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

Precipitation Probability (%)

30
31
37
47
63
56
44
26
28
29
31
30
29
26
25
22
17
16
13
9
11
12
11
16

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

16
15
14
14
14
14
13
12
11
11
10
9
9
9
8
8
9
9
10
10
11
12
12
12

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

59
76
93
83
77
69
69
69
70
71
73
74
75
77
78
80
78
79
77
77
74
76
76
76

Pressure (mb)

1023
1023
1022
1022
1023
1023
1023
1023
1024
1024
1024
1024
1024
1024
1025
1025
1025
1025
1026
1026
1027
1027
1027
1027

Ozone (du)

381
378
376
370
364
358
357
356
355
353
351
349
350
350
351
351
351
352
352
353
354
354
354
355

Friday 26

Waxing Crescent 38%

11:22

23:06

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
03 OK
04 OK
05 OK

Sun - Rise: 07:58, Set: 15:53, Transit: 11:56. Moon - Rise: 11:22, Set: 23:06. Civil Dark: 16:32 - 07:18. Nautical Dark: 17:15 - 06:36. Astro Dark: 17:55 - 05:55

Total Clouds (% Sky Obscured)

93
90
92
95
99
99
100
100
96
90
76
64
56
48
40
31
27

Low Clouds (% Sky Obscured)

91
86
90
94
99
99
100
100
94
87
76
64
56
48
40
31
27

Medium Clouds (% Sky Obscured)

1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

3
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

Fog (%)

91
91
91
91
91
91
91
91
91
91
91
91
91
91
91
91
91

Precipitation Type

None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

18
17
13
13
17
16
12
10
10
8
0
1
2
0
0
0
0

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4

Feels Like (°C)

-2
-3
-3
-2
-3
-2
-2
-2
-2
-2
-2
-3
-2
-2
-2
-2
-2

Dew Point (°C)

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

Relative Humidity (%)

76
76
77
77
77
76
76
76
76
76
76
76
75
73
71
66
60

Pressure (mb)

1028
1028
1028
1028
1029
1029
1030
1030
1031
1031
1031
1031
1032
1032
1032
1032
1032

Ozone (du)

354
354
354
353
352
350
351
351
351
352
353
354
351
348
346
340
334

Forecast for Dover, Kent, United Kingdom (51.13,1.31)

Generated: 20/12/25 13:02:21. Forecast: 20/12/25 to 26/12/25. Timezone: UTC+0.00