Clear Outside v1.0 - International Weather Forecasts For Astronomers

Tuesday 23

Waxing Crescent 12%

10:50

19:42

05 OK
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
03 Bad
04 Bad

Sun - Rise: 08:19, Set: 16:19, Transit: 12:19. Moon - Rise: 10:50, Set: 19:42. Civil Dark: 16:58 - 07:40. Nautical Dark: 17:40 - 06:58. Astro Dark: 18:20 - 06:18

Total Clouds (% Sky Obscured)

31
55
69
100
95
100
100
97
70
74
88
81
72
85
90
93
94
90
79
73
59
59
54
53

Low Clouds (% Sky Obscured)

0
3
61
88
90
100
100
63
37
56
61
57
52
71
70
82
94
89
79
73
59
59
54
53

Medium Clouds (% Sky Obscured)

31
55
61
67
53
56
56
46
28
20
49
27
21
23
30
23
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

31
26
69
45
10
0
27
41
4
4
16
54
72
85
80
31
70
54
6
3
3
4
7
6

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
16
16
8
7
19
16
3
0
0
0
0
0
1
1
1
2
1
1
1
1
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
11
10
11
11
10
9
11
13
13
12
10
10
11
10
11
10
11
11
12
11
11
11
11

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

7
6
6
7
7
8
8
8
9
8
7
7
6
5
5
4
4
3
3
3
4
3
3
3

Relative Humidity (%)

85
84
84
85
85
85
87
88
93
90
87
87
88
88
88
88
86
82
81
81
85
85
85
85

Pressure (mb)

1010
1010
1011
1012
1014
1015
1016
1016
1016
1017
1018
1019
1020
1021
1022
1023
1023
1024
1024
1025
1025
1026
1027
1027

Ozone (du)

371
365
363
363
363
358
358
356
355
355
353
348
344
342
343
342
343
342
337
334
332
328
326
323

Wednesday 24

Waxing Crescent 19%

11:08

20:59

05 Bad
06 Bad
07 Bad
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 Good
21 Good
22 Good
23 Good
00 Good
01 Good
02 Good
03 Good
04 Good

Sun - Rise: 08:19, Set: 16:20, Transit: 12:20. Moon - Rise: 11:08, Set: 20:59. Civil Dark: 16:59 - 07:40. Nautical Dark: 17:41 - 06:58. Astro Dark: 18:21 - 06:18

Total Clouds (% Sky Obscured)

56
57
59
59
53
57
74
63
95
27
14
1
0
0
0
0
0
0
5
0
0
0
1
1

Low Clouds (% Sky Obscured)

56
57
59
59
53
57
65
33
27
16
12
0
0
0
0
0
0
0
5
0
0
0
0
0

Medium Clouds (% Sky Obscured)

0
0
0
0
2
12
35
23
3
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

5
3
3
3
2
5
12
52
85
27
9
1
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
1
1
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)

11
11
12
12
14
15
17
18
18
17
16
16
14
13
13
15
15
14
15
14
14
15
16
16

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

85
85
85
85
80
82
79
76
75
74
72
73
77
79
79
77
80
80
79
77
77
76
76
76

Pressure (mb)

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

Ozone (du)

321
319
319
321
321
320
320
321
320
318
319
320
322
321
322
325
329
331
334
335
336
339
341
346

Thursday 25

Waxing Crescent 28%

11:23

22:16

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

Sun - Rise: 08:19, Set: 16:21, Transit: 12:20. Moon - Rise: 11:23, Set: 22:16. Civil Dark: 16:59 - 07:41. Nautical Dark: 17:41 - 06:59. Astro Dark: 18:21 - 06:19

Total Clouds (% Sky Obscured)

1
10
17
8
78
73
51
24
35
49
67
69
72
79
76
65
52
22
23
26
27
27
27
27

Low Clouds (% Sky Obscured)

0
10
14
0
0
0
0
23
35
49
67
69
72
79
76
65
52
22
23
26
27
27
27
27

Medium Clouds (% Sky Obscured)

0
0
10
8
78
73
48
8
3
0
1
0
0
1
1
0
0
0
1
3
3
1
0
0

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
23
9
0
0
0
0
0
1
1
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
2
3
6
10
10
10
12
11
11
7
4
4
6
6
3
2
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

73
73
73
70
70
68
66
63
64
66
67
68
70
71
72
75
75
75
76
76
76
76
77
77

Pressure (mb)

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

Ozone (du)

353
358
358
357
360
364
367
367
366
366
365
364
365
364
364
363
362
362
364
364
365
365
364
363

Friday 26

Waxing Crescent 39%

11:36

23:33

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

Sun - Rise: 08:20, Set: 16:21, Transit: 12:21. Moon - Rise: 11:36, Set: 23:33. Civil Dark: 17:00 - 07:41. Nautical Dark: 17:42 - 06:59. Astro Dark: 18:22 - 06:19

Total Clouds (% Sky Obscured)

26
28
29
37
36
41
87
46
42
91
90
87
85
50
22
17
15
14
11
15
20
73
51
67

Low Clouds (% Sky Obscured)

26
28
29
37
36
41
78
46
42
67
59
52
45
36
22
17
15
14
11
15
20
27
26
24

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
3
0
65
70
75
80
31
2
0
0
0
0
0
0
0
0
1

High Clouds (% Sky Obscured)

0
0
0
0
0
1
23
1
1
60
65
65
0
0
0
0
0
0
0
4
6
52
28
43

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

13
12
11
10
8
9
11
11
12
11
12
12
11
11
11
11
11
11
10
10
10
10
10
10

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

79
77
78
80
80
79
76
75
73
76
76
77
77
77
79
80
80
80
82
83
82
83
85
85

Pressure (mb)

1027
1027
1027
1028
1028
1028
1028
1028
1028
1027
1027
1028
1028
1028
1029
1029
1030
1030
1030
1030
1030
1031
1031
1031

Ozone (du)

360
358
362
361
361
361
362
364
361
359
359
359
363
362
363
366
365
362
355
349
344
341
340
336

Saturday 27

First Quarter 50%

11:48

00:52

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

Sun - Rise: 08:20, Set: 16:22, Transit: 12:21. Moon - Rise: 11:48, Set: 00:52. Civil Dark: 17:01 - 07:41. Nautical Dark: 17:43 - 06:59. Astro Dark: 18:23 - 06:19

Total Clouds (% Sky Obscured)

61
88
77
70
33
32
42
45
51
58
44
34
24
28
23
19
23
36
44
37
39
40
37
43

Low Clouds (% Sky Obscured)

25
23
23
22
19
18
14
19
26
28
31
32
24
28
20
14
13
14
15
18
24
29
35
38

Medium Clouds (% Sky Obscured)

27
50
45
47
14
5
4
5
4
3
1
3
0
0
0
0
0
0
0
13
19
24
11
8

High Clouds (% Sky Obscured)

43
33
23
2
22
32
42
45
51
58
44
30
4
2
2
2
19
36
44
29
16
2
4
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 (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
0
2
2
1
4
5
4
6
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
8
8
9
9
9
10
11
11
11
12
12
15
15
16
16
15
14
14
14
14
13

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

83
79
75
73
73
73
72
72
72
78
81
82
85
86
83
83
82
82
82
82
83
82
82
82

Pressure (mb)

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

Ozone (du)

331
328
325
322
321
320
316
313
311
309
309
309
310
311
311
311
311
311
310
309
308
306
305
305

Sunday 28

Waxing Gibbous 61%

12:02

02:15

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

Sun - Rise: 08:20, Set: 16:23, Transit: 12:22. Moon - Rise: 12:02, Set: 02:15. Civil Dark: 17:02 - 07:41. Nautical Dark: 17:44 - 06:59. Astro Dark: 18:23 - 06:20

Total Clouds (% Sky Obscured)

40
33
29
36
34
29
21
30
38
47
53
57
60
45
33
23
33
34
36
36
43
54
49
41

Low Clouds (% Sky Obscured)

38
33
29
27
19
18
18
26
36
45
50
55
60
45
33
23
32
33
33
29
40
54
49
41

Medium Clouds (% Sky Obscured)

3
3
4
7
9
6
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

5
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
8
17
25
18
10
1
16
26

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
1
1
0
1
1
0
1
1
1
2
2
1
2
3
2
3
2
1
1
1
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
12
11
11
12
12
13
12
12
11
11
10
9
9
9
9
8
8
8
7
7
7
6

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

83
83
83
83
85
82
80
79
79
79
79
79
79
80
82
82
83
83
85
85
85
86
86
86

Pressure (mb)

1033
1033
1034
1034
1034
1034
1033
1033
1033
1032
1032
1032
1032
1032
1032
1032
1032
1032
1032
1032
1032
1032
1032
1032

Ozone (du)

305
305
304
304
304
304
303
303
303
303
304
304
304
304
305
305
306
307
307
308
307
306
306
306

Monday 29

Waxing Gibbous 72%

12:18

03:43

Sun - Rise: 08:20, Set: 16:24, Transit: 12:22. Moon - Rise: 12:18, Set: 03:43. Civil Dark: 17:03 - 07:41. Nautical Dark: 17:44 - 07:00. Astro Dark: 18:24 - 06:20

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 Mawgan Porth, Cornwall, United Kingdom (50.46,-5.03)

Generated: 23/12/25 05:12:15. Forecast: 23/12/25 to 29/12/25. Timezone: UTC+0.00