Clear Outside v1.0 - International Weather Forecasts For Astronomers

Monday 29

Waxing Gibbous 72%

12:21

02:16

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
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad

Sun - Rise: 08:20, Set: 16:27, Transit: 12:24. Moon - Rise: 12:21, Set: 02:16. Civil Dark: 17:05 - 07:42. Nautical Dark: 17:47 - 07:00. Astro Dark: 18:27 - 06:21

Total Clouds (% Sky Obscured)

99
96
96
100
100
100
89
94
94
92
89
85
76
75
77
80
98
100
100
100
100
100
100
91

Low Clouds (% Sky Obscured)

66
62
74
76
63
54
69
88
89
90
88
84
74
73
76
76
80
79
61
66
55
29
65
78

Medium Clouds (% Sky Obscured)

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

High Clouds (% Sky Obscured)

97
96
96
100
100
100
89
86
80
66
5
3
3
0
0
8
45
100
100
100
100
100
100
91

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
5
2
3
3
3
4
6
1
1
0
1
3
4
3
2
5
7
14
9
7
7

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
10
11
11
14
14
14
13
13
13
13
14
14
15
15
15
15
14
15
16
15
16
16
16

Chance of Frost

Temperature (°C)

5
5
5
5
6
5
5
5
5
5
6
6
6
6
6
6
6
6
6
6
6
6
6
6

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

78
79
76
79
82
86
88
86
80
78
74
76
76
75
71
71
72
74
75
76
75
74
75
75

Pressure (mb)

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

Ozone (du)

325
325
322
319
315
311
310
309
306
304
302
303
303
305
306
304
304
298
295
289
281
278
281
282

Tuesday 30

Waxing Gibbous 82%

12:42

03:43

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 OK
18 OK
19 Bad
20 Good
21 OK
22 OK
23 Good
00 OK

Sun - Rise: 08:20, Set: 16:28, Transit: 12:24. Moon - Rise: 12:42, Set: 03:43. Civil Dark: 17:06 - 07:42. Nautical Dark: 17:48 - 07:01. Astro Dark: 18:27 - 06:21

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
93
96
81
71
67
78
51
60
76
37
18
46
12
36
29
8
13

Low Clouds (% Sky Obscured)

58
64
37
60
84
81
77
69
84
40
37
47
24
0
29
32
24
0
0
0
30
22
0
0

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)

100
100
100
100
100
100
100
88
87
78
71
49
62
51
60
64
37
18
46
12
27
29
8
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 (%)

13
6
9
7
7
6
6
6
5
3
3
3
3
4
2
2
1
0
1
0
1
4
3
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

74
75
75
74
71
72
74
79
78
75
70
67
65
64
67
66
67
68
68
73
78
80
79
79

Pressure (mb)

1030
1030
1030
1030
1030
1031
1031
1032
1033
1033
1034
1033
1033
1033
1033
1033
1034
1034
1034
1034
1034
1034
1034
1034

Ozone (du)

281
283
286
284
287
289
291
293
294
296
297
296
297
299
299
297
295
295
298
300
304
307
307
310

Wednesday 31

Waxing Gibbous 91%

13:13

05:13

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

Sun - Rise: 08:20, Set: 16:29, Transit: 12:25. Moon - Rise: 13:13, Set: 05:13. Civil Dark: 17:07 - 07:42. Nautical Dark: 17:49 - 07:01. Astro Dark: 18:28 - 06:21

Total Clouds (% Sky Obscured)

18
12
6
6
5
7
6
4
4
4
4
7
13
19
35
41
38
72
85
90
100
99
100
100

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
19
37
56
62
68
74
73

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)

6
5
5
5
4
7
6
4
4
4
4
6
9
13
31
41
30
72
85
77
100
95
100
91

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

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)

11
11
10
9
9
8
8
8
7
7
6
6
4
4
4
3
3
2
1
1
2
2
3
4

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

2
1
1
1
1
1
1
1
1
1
1
1
1
1
2
2
2
2
2
2
2
2
2
2

Relative Humidity (%)

79
79
79
80
80
80
80
80
79
76
74
72
70
71
74
76
78
78
79
78
78
78
78
76

Pressure (mb)

1034
1034
1034
1034
1033
1033
1033
1033
1033
1033
1033
1032
1031
1031
1030
1030
1029
1029
1029
1028
1027
1027
1026
1025

Ozone (du)

313
314
315
315
315
316
318
319
318
318
319
317
315
315
313
313
313
316
316
320
319
321
320
320

Thursday 1

Waxing Gibbous 97%

13:57

06:41

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
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad

Sun - Rise: 08:20, Set: 16:30, Transit: 12:25. Moon - Rise: 13:57, Set: 06:41. Civil Dark: 17:08 - 07:42. Nautical Dark: 17:50 - 07:01. Astro Dark: 18:29 - 06:21

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
99
98
88
76
64
78
84
94
88
84
82
83
80
79
86
90
94
94

Low Clouds (% Sky Obscured)

73
72
72
72
73
80
87
95
83
72
59
66
69
72
70
68
66
66
63
62
69
73
77
78

Medium Clouds (% Sky Obscured)

0
0
0
0
0
10
21
27
16
6
0
8
15
19
19
14
9
9
7
5
12
22
33
28

High Clouds (% Sky Obscured)

100
80
75
57
54
36
23
2
12
3
1
13
4
3
3
4
17
55
51
37
26
26
25
15

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
Very Light Rain
None

Precipitation Probability (%)

1
1
7
9
15
21
29
40
33
26
9
11
21
19
25
26
29
30
33
34
41
46
49
44

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
0.2
0

Wind Speed/Direction (mph)

5
6
7
8
9
10
10
12
15
15
15
15
16
16
17
16
16
16
15
15
15
14
14
14

Chance of Frost

Temperature (°C)

6
7
7
7
7
7
7
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8

Feels Like (°C)

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

Dew Point (°C)

2
2
2
2
2
2
3
3
3
3
3
3
3
3
3
2
2
2
2
2
2
2
2
2

Relative Humidity (%)

72
71
69
67
68
69
73
73
73
70
69
68
70
71
70
69
65
65
65
66
66
65
68
66

Pressure (mb)

1024
1023
1023
1022
1021
1020
1020
1019
1019
1018
1018
1017
1016
1016
1015
1015
1014
1014
1014
1013
1013
1013
1012
1012

Ozone (du)

322
321
322
321
321
320
322
324
322
322
324
324
322
318
316
314
312
310
305
302
301
299
300
298

Friday 2

Waxing Gibbous 100%

14:59

07:57

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
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad

Sun - Rise: 08:20, Set: 16:31, Transit: 12:26. Moon - Rise: 14:59, Set: 07:57. Civil Dark: 17:09 - 07:42. Nautical Dark: 17:51 - 07:01. Astro Dark: 18:30 - 06:21

Total Clouds (% Sky Obscured)

93
91
83
72
60
63
64
67
67
68
67
68
69
72
70
68
72
77
76
78
79
78
74
75

Low Clouds (% Sky Obscured)

77
76
69
60
52
53
47
49
40
44
47
50
52
53
50
47
44
38
33
28
30
35
38
39

Medium Clouds (% Sky Obscured)

23
18
13
60
60
61
63
64
67
66
67
58
49
41
32
20
8
20
31
39
34
37
40
45

High Clouds (% Sky Obscured)

10
10
10
10
15
15
15
20
20
35
45
55
65
70
70
65
45
30
25
10
10
10
20
35

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 (%)

37
28
21
17
14
14
12
9
8
6
3
10
10
9
10
9
3
7
7
6
8
8
5
13

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
14
14
14
14
14
14
13
13
13
13
13
12
12
12
12
11
12
12
12
11
11
12
13

Chance of Frost

Temperature (°C)

8
8
7
7
7
7
7
7
7
7
7
7
7
7
6
6
6
6
6
6
6
6
6
7

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

66
66
66
66
66
65
66
65
66
67
66
64
63
64
64
65
67
68
68
68
70
69
69
67

Pressure (mb)

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

Ozone (du)

299
302
305
306
308
309
309
311
315
317
308
302
298
295
291
293
295
297
301
305
309
310
311
311

Saturday 3

Full Moon 99%

16:19

08:55

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
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad

Sun - Rise: 08:20, Set: 16:32, Transit: 12:26. Moon - Rise: 16:19, Set: 08:55. Civil Dark: 17:10 - 07:42. Nautical Dark: 17:52 - 07:01. Astro Dark: 18:31 - 06:21

Total Clouds (% Sky Obscured)

70
65
62
68
81
76
76
77
69
58
48
64
82
100
94
88
81
80
78
76
84
92
100
94

Low Clouds (% Sky Obscured)

40
39
49
61
72
72
70
71
61
50
37
46
59
70
70
70
70
66
61
57
58
54
42
35

Medium Clouds (% Sky Obscured)

55
65
62
68
75
75
75
65
60
58
48
64
82
100
94
88
81
80
78
76
84
92
100
94

High Clouds (% Sky Obscured)

40
45
50
65
75
75
70
55
30
25
15
10
15
15
30
40
35
25
15
5
0
0
0
0

ISS Passover

Visibility (miles)

8
7
7
7
8
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
Very Light Rain
Sleet
Sleet
Sleet
Very Light Rain
Very Light Rain
None
None
None

Precipitation Probability (%)

18
22
28
26
20
28
30
30
29
27
21
30
37
44
48
54
61
58
56
57
49
41
32
40

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

14
16
19
19
19
20
19
19
18
18
17
17
17
17
18
18
18
19
20
21
22
23
24
25

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

74
81
86
79
72
66
62
59
56
56
57
57
57
59
60
62
62
64
63
62
62
61
59
59

Pressure (mb)

1004
1004
1003
1003
1003
1002
1002
1002
1002
1002
1002
1002
1001
1001
1001
1001
1001
1001
1001
1001
1001
1001
1002
1002

Ozone (du)

319
326
333
340
347
354
354
354
354
354
354
354
351
349
347
347
347
347
348
350
352
353
355
357

Sunday 4

Waning Gibbous 99%

17:47

09:34

Sun - Rise: 08:20, Set: 16:33, Transit: 12:27. Moon - Rise: 17:47, Set: 09:34. Civil Dark: 17:11 - 07:42. Nautical Dark: 17:53 - 07:01. Astro Dark: 18:32 - 06:21

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 Marazion, Cornwall, United Kingdom (50.13,-5.46)

Generated: 29/12/25 01:40:15. Forecast: 29/12/25 to 04/01/26. Timezone: UTC+0.00