Clear Outside v1.0 - International Weather Forecasts For Astronomers

Saturday 27

First Quarter 50%

11:39

00:41

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 OK
00 Good
01 OK
02 OK
03 Bad
04 Bad
05 Bad
06 Bad
07 Bad

Sun - Rise: 08:05, Set: 16:17, Transit: 12:11. Moon - Rise: 11:39, Set: 00:41. Civil Dark: 16:54 - 07:28. Nautical Dark: 17:35 - 06:47. Astro Dark: 18:14 - 06:08

Total Clouds (% Sky Obscured)

66
72
75
78
60
44
42
62
66
61
45
59
63
61
53
21
5
36
27
68
80
88
90
97

Low Clouds (% Sky Obscured)

66
70
75
78
60
44
42
62
66
61
45
59
63
61
53
21
5
36
27
68
80
88
90
90

Medium Clouds (% Sky Obscured)

66
65
8
32
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
0
1
61

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
1
1
1
1
2
4
4
3
4
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)

19
21
23
23
25
25
25
24
25
24
24
24
24
23
23
23
22
21
22
22
22
23
24
25

Chance of Frost

Temperature (°C)

9
9
9
9
9
9
9
9
8
8
8
8
8
8
8
8
8
8
8
8
8
8
9
9

Feels Like (°C)

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

Dew Point (°C)

5
5
5
4
3
3
2
1
1
1
1
2
2
2
2
2
3
4
5
5
6
5
5
5

Relative Humidity (%)

73
73
73
72
67
63
61
59
61
62
63
65
65
63
63
64
69
74
79
82
84
81
80
78

Pressure (mb)

1029
1029
1030
1030
1030
1029
1029
1029
1029
1029
1029
1030
1030
1031
1031
1030
1030
1030
1030
1030
1030
1030
1029
1029

Ozone (du)

355
355
355
359
363
371
370
362
359
354
349
346
345
346
345
346
347
348
348
349
350
349
348
349

Sunday 28

Waxing Gibbous 61%

11:53

02:02

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
03 Bad
04 Bad
05 Bad
06 Bad
07 Bad

Sun - Rise: 08:05, Set: 16:18, Transit: 12:12. Moon - Rise: 11:53, Set: 02:02. Civil Dark: 16:55 - 07:28. Nautical Dark: 17:36 - 06:47. Astro Dark: 18:15 - 06:08

Total Clouds (% Sky Obscured)

100
100
99
86
84
90
81
81
78
80
79
84
79
79
84
89
83
84
80
69
80
71
67
70

Low Clouds (% Sky Obscured)

86
86
83
83
81
78
79
81
78
80
79
84
78
79
84
89
83
84
80
69
80
71
67
70

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)

90
81
76
17
33
66
11
1
1
1
0
1
1
7
1
1
1
2
3
3
2
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
2
1
1
1
2
2
3
3
4
4
14
5
6
16
6
3
3
1
1
2
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)

24
24
23
23
22
22
22
22
23
22
22
21
20
19
18
16
16
15
15
15
15
15
15
15

Chance of Frost

Temperature (°C)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
8
8
8
7
7
7
8
8
8
8

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

80
77
75
75
75
75
74
74
74
75
73
73
74
74
74
71
70
70
69
70
69
69
73
73

Pressure (mb)

1030
1030
1030
1029
1029
1028
1028
1027
1027
1027
1027
1027
1027
1026
1026
1026
1026
1025
1025
1025
1025
1025
1025
1025

Ozone (du)

349
349
350
350
348
347
347
346
343
339
332
327
328
326
323
319
316
315
315
314
314
314
314
314

Monday 29

Waxing Gibbous 72%

12:11

03:28

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

Sun - Rise: 08:05, Set: 16:19, Transit: 12:12. Moon - Rise: 12:11, Set: 03:28. Civil Dark: 16:56 - 07:28. Nautical Dark: 17:37 - 06:47. Astro Dark: 18:16 - 06:08

Total Clouds (% Sky Obscured)

63
63
66
67
59
58
37
23
12
0
0
0
7
45
67
46
57
68
80
86
92
97
98
99

Low Clouds (% Sky Obscured)

63
63
66
67
59
58
37
23
12
0
0
0
7
45
67
37
49
62
75
81
88
95
96
98

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
0
0
0
0
0
0
2
3
4
6
35
30

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
1
2
4
4
5
7
12
9
13
18
19
23
26

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

Chance of Frost

Temperature (°C)

8
8
8
8
8
8
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

74
70
69
70
68
65
64
61
60
60
61
67
73
75
77
77
73
70
68
69
69
68
68
73

Pressure (mb)

1025
1025
1026
1025
1025
1025
1025
1025
1025
1025
1026
1026
1027
1027
1027
1028
1028
1028
1028
1029
1029
1029
1029
1029

Ozone (du)

312
311
309
309
308
308
308
308
307
306
307
307
305
303
301
297
292
286
284
283
281
280
277
279

Tuesday 30

Waxing Gibbous 82%

12:33

04:57

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
03 Bad
04 Bad
05 Bad
06 Bad
07 Bad

Sun - Rise: 08:06, Set: 16:19, Transit: 12:12. Moon - Rise: 12:33, Set: 04:57. Civil Dark: 16:57 - 07:28. Nautical Dark: 17:38 - 06:47. Astro Dark: 18:17 - 06:08

Total Clouds (% Sky Obscured)

100
97
95
92
90
89
86
87
89
91
94
97
100
93
85
80
79
81
80
76
71
63
45
53

Low Clouds (% Sky Obscured)

100
95
90
85
83
81
79
80
82
85
90
95
100
88
78
69
70
71
73
64
55
45
45
48

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)

35
24
15
8
9
6
24
41
53
60
50
63
52
48
30
20
10
14
19
27
30
30
5
3

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 (%)

29
22
17
15
21
18
5
12
13
11
11
8
9
11
7
11
6
11
3
3
2
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)

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

Chance of Frost

Temperature (°C)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
8
8
8
8
8
8
8
8
8

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

72
72
68
68
69
67
68
64
65
68
67
64
64
63
63
63
62
61
60
61
60
57
61
63

Pressure (mb)

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

Ozone (du)

280
279
279
280
283
284
287
289
293
295
295
296
296
298
297
297
297
297
298
300
302
306
309
310

Wednesday 31

Waxing Gibbous 91%

13:04

06:25

08 OK
09 OK
10 OK
11 Bad
12 OK
13 OK
14 OK
15 OK
16 OK
17 OK
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

Sun - Rise: 08:06, Set: 16:20, Transit: 12:13. Moon - Rise: 13:04, Set: 06:25. Civil Dark: 16:58 - 07:28. Nautical Dark: 17:39 - 06:47. Astro Dark: 18:18 - 06:08

Total Clouds (% Sky Obscured)

38
40
39
44
42
41
40
40
39
40
63
77
85
92
95
99
96
93
89
86
80
72
83
92

Low Clouds (% Sky Obscured)

38
40
39
44
42
41
40
40
39
40
55
60
67
73
78
83
88
93
89
86
80
72
83
84

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
27
32
44
37
30
24
17
9
0
15
26
29
25
15

High Clouds (% Sky Obscured)

1
2
2
2
1
1
1
0
0
0
63
64
68
71
69
71
77
84
89
86
80
72
83
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
None

Precipitation Probability (%)

0
0
0
0
0
0
0
0
0
0
5
8
9
12
13
12
12
11
10
12
12
12
15
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)

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

Chance of Frost

Temperature (°C)

8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
9
9

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

63
64
64
65
68
70
71
70
69
69
68
68
67
65
64
63
62
64
65
67
65
64
63
63

Pressure (mb)

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

Ozone (du)

309
312
313
314
315
314
316
318
321
325
326
324
321
319
319
318
318
320
322
323
322
321
320
319

Thursday 1

Waxing Gibbous 97%

13:49

07:41

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
03 Bad
04 Bad
05 Bad
06 Bad
07 Bad

Sun - Rise: 08:05, Set: 16:21, Transit: 12:13. Moon - Rise: 13:49, Set: 07:41. Civil Dark: 16:59 - 07:28. Nautical Dark: 17:40 - 06:47. Astro Dark: 18:18 - 06:09

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
94
88
85
79
72
66
71
76
81
80
80
78
85
92

Low Clouds (% Sky Obscured)

83
82
83
84
79
74
69
62
56
49
54
59
64
65
65
64
67
66
68
64
65
57
66
75

Medium Clouds (% Sky Obscured)

10
10
10
25
43
62
80
86
86
86
67
45
27
19
10
2
3
5
5
6
6
11
21
34

High Clouds (% Sky Obscured)

93
93
96
98
93
86
80
57
37
14
10
7
1
1
0
1
1
1
1
6
15
22
44
73

ISS Passover

Visibility (miles)

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

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 (%)

20
20
19
14
17
21
27
33
34
31
30
28
26
23
21
18
28
34
39
41
42
44
37
34

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)

14
15
16
17
18
18
18
19
19
20
21
20
19
19
19
19
20
20
21
22
22
21
20
19

Chance of Frost

Temperature (°C)

9
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
9
9
9
9
9
9

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

63
63
61
60
59
62
66
69
69
70
70
70
69
69
69
69
69
72
73
74
77
78
80
76

Pressure (mb)

1028
1027
1027
1027
1026
1026
1025
1024
1024
1024
1023
1023
1024
1024
1023
1023
1023
1023
1023
1023
1023
1023
1023
1023

Ozone (du)

317
315
318
321
324
326
327
329
330
332
333
330
327
324
323
322
321
319
316
314
309
303
298
295

Friday 2

Waxing Gibbous 100%

14:52

No Set

Sun - Rise: 08:05, Set: 16:22, Transit: 12:14. Moon - Rise: 14:52, Set: No Set. Civil Dark: 17:00 - 07:28. Nautical Dark: 17:40 - 06:47. Astro Dark: 18:19 - 06:09

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 Salerie, Guernsey (49.46,-2.53)

Generated: 27/12/25 08:25:07. Forecast: 27/12/25 to 02/01/26. Timezone: UTC+0.00