Clear Outside v1.0 - International Weather Forecasts For Astronomers

Tuesday 30

Waxing Gibbous 82%

12:37

05:11

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

Sun - Rise: 08:18, Set: 16:22, Transit: 12:20. Moon - Rise: 12:37, Set: 05:11. Civil Dark: 17:01 - 07:39. Nautical Dark: 17:43 - 06:57. Astro Dark: 18:22 - 06:18

Total Clouds (% Sky Obscured)

93
87
76
60
66
67
63
61
52
44
16
17
19
5
0
0
2
1
1
4
2
2
2
3

Low Clouds (% Sky Obscured)

56
40
47
58
57
61
63
58
44
36
0
0
0
0
0
0
0
0
0
0
0
0
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)

91
74
59
60
66
52
44
61
52
44
16
17
19
5
0
0
2
1
1
4
2
2
2
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 (%)

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

12
12
11
13
13
14
13
13
12
10
8
7
7
6
6
6
6
6
6
5
5
5
4
4

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

72
71
76
76
73
71
68
67
68
72
77
77
78
78
81
83
86
86
87
87
87
87
89
89

Pressure (mb)

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

Ozone (du)

285
285
289
289
290
291
293
294
296
300
303
303
301
299
299
298
296
298
302
302
304
302
305
306

Wednesday 31

Waxing Gibbous 91%

13:06

06:40

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

Sun - Rise: 08:18, Set: 16:23, Transit: 12:21. Moon - Rise: 13:06, Set: 06:40. Civil Dark: 17:02 - 07:39. Nautical Dark: 17:44 - 06:58. Astro Dark: 18:23 - 06:18

Total Clouds (% Sky Obscured)

2
7
1
1
0
2
1
1
4
9
7
3
3
14
55
76
93
86
95
89
97
86
95
87

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
14
73
78
85
87
97
76
91
84

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)

2
7
1
1
0
2
1
1
4
7
6
3
3
14
25
29
52
64
91
72
83
77
64
57

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
1
6
7
5
4
3
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
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
1
6
13
32
19

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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

89
89
86
77
72
68
66
67
73
79
83
84
84
84
84
84
83
83
86
86
88
88
82
83

Pressure (mb)

1033
1033
1033
1033
1032
1031
1030
1030
1029
1029
1029
1028
1028
1027
1027
1026
1025
1024
1023
1023
1022
1021
1020
1019

Ozone (du)

309
310
310
307
306
305
306
305
304
304
304
303
304
308
309
311
313
314
314
316
316
316
317
320

Thursday 1

Waxing Gibbous 97%

13:50

No Set

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
05 Bad
06 Bad

Sun - Rise: 08:18, Set: 16:24, Transit: 12:21. Moon - Rise: 13:50, Set: No Set. Civil Dark: 17:03 - 07:39. Nautical Dark: 17:44 - 06:57. Astro Dark: 18:24 - 06:18

Total Clouds (% Sky Obscured)

59
68
68
64
75
91
100
98
76
63
39
53
45
49
60
65
60
67
73
76
76
78
77
77

Low Clouds (% Sky Obscured)

57
65
60
62
74
90
100
96
73
63
39
53
45
49
60
65
60
67
72
74
74
73
70
70

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
5
6
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

35
2
2
1
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 (%)

10
5
3
3
4
4
14
7
18
18
6
5
4
3
1
2
2
2
2
1
3
3
5
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)

6
7
8
8
9
10
10
11
11
9
7
7
6
6
7
6
7
8
7
7
6
6
5
5

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

86
91
83
77
75
72
74
72
76
85
89
89
89
88
86
83
82
82
80
79
77
76
76
76

Pressure (mb)

1018
1018
1018
1017
1017
1016
1015
1014
1014
1014
1014
1014
1014
1015
1015
1014
1014
1014
1013
1013
1013
1012
1012
1012

Ozone (du)

321
318
314
311
314
315
315
314
310
307
304
304
304
304
306
308
307
309
310
307
305
303
301
298

Friday 2

Waxing Gibbous 100%

14:52

07:56

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 OK
01 Bad
02 OK
03 Bad
04 Bad
05 Bad
06 Bad

Sun - Rise: 08:18, Set: 16:25, Transit: 12:21. Moon - Rise: 14:52, Set: 07:56. Civil Dark: 17:04 - 07:39. Nautical Dark: 17:45 - 06:57. Astro Dark: 18:25 - 06:18

Total Clouds (% Sky Obscured)

77
79
76
72
49
54
61
68
74
74
94
92
78
69
60
49
75
29
32
31
49
81
95
93

Low Clouds (% Sky Obscured)

69
69
68
65
49
54
61
68
71
74
89
85
75
67
60
49
68
29
32
31
49
73
82
74

Medium Clouds (% Sky Obscured)

0
0
0
0
0
8
15
23
24
24
21
12
5
0
0
0
0
6
13
20
22
50
74
58

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
5
9
9
9
9
9
9
9
9
9
9
9
0

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

Precipitation Probability (%)

8
6
7
6
5
7
8
6
23
34
52
41
31
20
21
18
4
13
18
20
33
40
46
42

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

77
77
77
76
73
68
70
72
75
80
83
94
85
84
89
88
86
84
86
81
75
72
75
89

Pressure (mb)

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

Ozone (du)

295
287
282
281
281
280
278
279
282
283
285
291
305
316
321
324
321
325
323
330
336
349
366
366

Saturday 3

Full Moon 99%

16:12

08:53

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

Sun - Rise: 08:18, Set: 16:26, Transit: 12:22. Moon - Rise: 16:12, Set: 08:53. Civil Dark: 17:05 - 07:39. Nautical Dark: 17:46 - 06:57. Astro Dark: 18:26 - 06:18

Total Clouds (% Sky Obscured)

90
85
78
76
72
66
37
29
38
65
50
78
80
81
74
58
55
35
18
6
19
31
44
31

Low Clouds (% Sky Obscured)

72
68
66
61
65
53
37
29
38
51
50
47
39
37
32
32
30
28
15
0
6
9
16
18

Medium Clouds (% Sky Obscured)

49
40
35
30
35
30
3
0
3
51
9
14
18
38
37
39
34
29
16
4
5
7
8
5

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
8
9
6
7
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
Snow
None
None
None
None
None
None
None

Precipitation Probability (%)

34
23
22
25
21
13
11
8
18
21
20
15
17
13
33
38
37
35
29
11
19
20
17
22

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.1
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

91
87
84
80
74
77
66
65
65
74
78
84
83
81
79
78
78
78
78
76
76
78
79
81

Pressure (mb)

1009
1009
1010
1010
1010
1010
1010
1010
1011
1011
1012
1012
1008
1008
1009
1009
1010
1010
1011
1011
1012
1012
1013
1013

Ozone (du)

365
372
368
372
383
391
396
404
409
414
411
409
401
392
384
378
372
367
361
355
349
349
349
349

Sunday 4

Waning Gibbous 96%

17:41

09:32

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
03 Bad
04 Bad
05 Bad
06 Bad

Sun - Rise: 08:17, Set: 16:27, Transit: 12:22. Moon - Rise: 17:41, Set: 09:32. Civil Dark: 17:06 - 07:39. Nautical Dark: 17:47 - 06:57. Astro Dark: 18:27 - 06:18

Total Clouds (% Sky Obscured)

21
11
23
38
54
53
50
47
41
39
38
43
50
54
60
65
70
65
60
54
58
61
68
77

Low Clouds (% Sky Obscured)

16
8
19
29
42
43
43
42
41
39
38
43
49
54
60
65
70
65
60
54
58
61
65
71

Medium Clouds (% Sky Obscured)

3
0
4
9
16
13
7
0
1
1
2
3
3
3
8
12
15
12
10
7
19
28
41
45

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
2
2
2
1
1
1
1
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
7
4
2

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

Precipitation Probability (%)

21
10
20
23
22
34
39
42
41
36
26
25
23
15
22
26
28
28
27
26
35
41
48
71

Precipitation Amount (mm)

0
0
0
0
0
0
0.1
0.1
0.1
0
0
0
0
0
0
0
0.1
0
0
0
0
0
0
0.4

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

80
80
77
75
71
69
73
76
79
79
78
78
78
80
80
77
77
75
73
73
72
79
85
93

Pressure (mb)

1014
1014
1015
1015
1016
1016
1016
1016
1016
1017
1017
1017
1017
1018
1018
1018
1017
1017
1017
1017
1016
1016
1016
1016

Ozone (du)

350
351
353
351
349
348
348
348
347
348
348
348
348
347
347
348
350
351
351
350
350
350
350
350

Monday 5

Waning Gibbous 90%

19:09

09:59

Sun - Rise: 08:17, Set: 16:29, Transit: 12:23. Moon - Rise: 19:09, Set: 09:59. Civil Dark: 17:07 - 07:39. Nautical Dark: 17:48 - 06:57. Astro Dark: 18:28 - 06:17

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 Upton, Cornwall, United Kingdom (50.54,-4.42)

Generated: 30/12/25 07:12:27. Forecast: 30/12/25 to 05/01/26. Timezone: UTC+0.00