Clear Outside v1.0 - International Weather Forecasts For Astronomers

Wednesday 17

Waning Crescent 3%

07:16

14:27

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
13 Bad
14 Bad
15 Bad
16 Bad
17 Bad
18 Bad
19 Bad

Sun - Rise: 08:14, Set: 16:14, Transit: 12:14. Moon - Rise: 07:16, Set: 14:27. Civil Dark: 16:53 - 07:35. Nautical Dark: 17:35 - 06:53. Astro Dark: 18:15 - 06:13

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

100
100
100
77
76
62
68
67
76
100
100
100
100
87
82
79
83
98
71
82
100
70
89
65

Medium Clouds (% Sky Obscured)

67
62
97
100
100
100
100
100
100
100
100
100
100
100
100
100
100
99
100
89
100
100
21
0

High Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
100
100
100
100
99
100
100
100
100
100
100
100
100
94

ISS Passover

Visibility (miles)

0
0
0
9
9
9
9
9
9
9
9
9
4
0
0
0
1
9
9
9
9
8
9
9

Fog (%)

0
0
1
2
0
0
0
0
0
20
54
6
23
0
0
0
0
0
0
0
0
0
0
0

Precipitation Type

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

Precipitation Probability (%)

95
95
95
20
5
1
2
9
50
95
95
95
95
95
95
95
80
21
18
27
79
65
39
7

Precipitation Amount (mm)

2.1
2.5
1.5
0
0
0
0
0
0.2
0.9
1.3
1.2
2.8
3.7
3.1
2
0.5
0
0
0
0.7
0.3
0
0

Wind Speed/Direction (mph)

28
26
23
16
12
11
8
7
7
6
7
7
7
9
9
10
9
9
12
16
18
20
15
16

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

96
96
96
91
91
93
93
96
96
96
98
95
95
98
100
98
96
95
90
93
91
90
88
82

Pressure (mb)

1006
1006
1006
1006
1007
1007
1007
1007
1006
1006
1005
1005
1004
1003
1002
1001
1000
1000
1000
1000
1001
1001
1002
1004

Ozone (du)

312
314
315
310
308
311
306
301
296
291
290
290
293
298
299
295
293
299
303
309
323
332
341
356

Thursday 18

Waning Crescent 1%

08:20

15:09

20 Bad
21 Bad
22 OK
23 OK
00 Bad
01 Bad
02 OK
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 OK

Sun - Rise: 08:15, Set: 16:14, Transit: 12:15. Moon - Rise: 08:20, Set: 15:09. Civil Dark: 16:53 - 07:36. Nautical Dark: 17:36 - 06:54. Astro Dark: 18:15 - 06:14

Total Clouds (% Sky Obscured)

100
54
40
32
47
47
29
48
50
65
54
69
61
66
76
59
60
67
70
65
69
49
51
41

Low Clouds (% Sky Obscured)

47
46
40
32
47
47
29
48
50
65
54
69
61
66
76
59
60
67
70
65
69
49
51
41

Medium Clouds (% Sky Obscured)

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

High Clouds (% Sky Obscured)

100
45
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
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 (%)

4
4
2
2
3
3
4
5
10
21
23
14
23
14
11
21
11
24
10
8
8
8
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)

13
11
13
11
12
11
10
10
11
11
10
10
9
9
10
12
14
13
13
10
7
6
7
7

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

82
84
79
76
75
75
79
80
82
82
83
86
86
86
87
84
80
80
81
82
87
88
88
86

Pressure (mb)

1006
1007
1008
1009
1010
1011
1012
1012
1013
1013
1014
1015
1015
1016
1017
1017
1017
1017
1017
1017
1018
1018
1018
1018

Ozone (du)

367
362
361
366
367
367
373
381
388
388
382
373
369
357
353
335
331
308
306
302
297
292
290
289

Friday 19

Waning Crescent 0%

09:13

16:04

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
13 Bad
14 Bad
15 Bad
16 Bad
17 Bad
18 Bad
19 Bad

Sun - Rise: 08:15, Set: 16:15, Transit: 12:15. Moon - Rise: 09:13, Set: 16:04. Civil Dark: 16:54 - 07:36. Nautical Dark: 17:36 - 06:54. Astro Dark: 18:16 - 06:14

Total Clouds (% Sky Obscured)

52
72
74
60
55
68
52
89
83
76
73
66
71
100
100
88
97
100
100
100
100
100
99
98

Low Clouds (% Sky Obscured)

52
72
74
60
55
66
52
86
75
59
59
56
49
54
45
55
67
73
63
74
82
82
83
85

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
1
4
19
0
0
15
35
37
38
27
86
74
61
92
96
95
94

High Clouds (% Sky Obscured)

0
3
3
3
11
2
7
31
11
30
50
60
60
100
100
86
94
59
51
53
47
96
72
62

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
8
9
9
9
9
9
9
9
9
9
5
4
3
2
1
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
None
None
None
None
None
None
None
None
None
None
None
Light Rain
Light Rain
Light Rain
Light Rain
Moderate Rain
Moderate Rain
Light Rain

Precipitation Probability (%)

11
8
7
6
21
24
25
31
31
15
8
17
9
18
15
21
33
72
95
95
95
95
95
95

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.4
0.8
1
2.1
3.1
3.5
0.9

Wind Speed/Direction (mph)

8
9
10
10
11
12
14
14
16
16
17
17
17
18
19
21
21
20
19
19
18
18
17
14

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

4
3
3
4
4
4
4
4
4
4
4
4
4
4
4
4
5
6
6
6
6
6
7
7

Relative Humidity (%)

86
82
81
83
82
84
81
82
82
81
79
78
77
77
75
77
81
84
88
88
88
93
96
94

Pressure (mb)

1017
1017
1016
1015
1015
1014
1013
1012
1011
1010
1010
1009
1009
1008
1008
1007
1006
1006
1005
1004
1004
1004
1003
1003

Ozone (du)

292
291
288
288
288
290
286
294
298
298
298
302
308
307
310
315
314
313
313
311
314
312
314
314

Saturday 20

New Moon 2%

09:54

17:10

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
13 Bad
14 Bad
15 Bad
16 Bad
17 Bad
18 Bad
19 Bad

Sun - Rise: 08:16, Set: 16:15, Transit: 12:16. Moon - Rise: 09:54, Set: 17:10. Civil Dark: 16:54 - 07:37. Nautical Dark: 17:36 - 06:55. Astro Dark: 18:16 - 06:15

Total Clouds (% Sky Obscured)

97
98
99
99
98
97
96
97
98
98
99
99
100
99
98
98
96
95
93
95
91
95
97
98

Low Clouds (% Sky Obscured)

85
82
79
80
81
81
81
85
87
90
88
85
82
76
79
77
77
78
73
79
60
79
83
82

Medium Clouds (% Sky Obscured)

94
94
95
95
85
76
67
68
67
71
79
89
100
96
93
91
91
91
46
24
78
34
88
33

High Clouds (% Sky Obscured)

45
52
64
70
63
75
80
80
76
77
63
62
51
49
52
75
76
82
3
4
18
49
75
68

ISS Passover

Visibility (miles)

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

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

Precipitation Probability (%)

50
30
17
18
26
33
56
85
95
95
94
91
74
81
95
95
70
51
55
52
42
33
41
40

Precipitation Amount (mm)

0
0
0
0
0
0
0.2
0.7
1
0.7
0.6
0.6
0.3
0.5
1.2
1.2
0.3
0
0.3
0.2
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

93
91
88
87
87
85
85
88
91
96
96
96
93
88
93
96
95
91
90
91
88
87
85
84

Pressure (mb)

1003
1004
1004
1003
1003
1003
1003
1003
1003
1003
1002
1002
1002
1003
1002
1002
1002
1002
1002
1002
1002
1002
1003
1004

Ozone (du)

317
320
321
324
329
335
346
353
366
373
381
389
395
398
400
404
411
415
418
419
419
422
428
432

Sunday 21

Waxing Crescent 6%

10:25

18:23

20 Bad
21 Bad
22 Bad
23 Bad
00 Bad
01 Bad
02 OK
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

Sun - Rise: 08:16, Set: 16:16, Transit: 12:16. Moon - Rise: 10:25, Set: 18:23. Civil Dark: 16:55 - 07:37. Nautical Dark: 17:37 - 06:55. Astro Dark: 18:17 - 06:15

Total Clouds (% Sky Obscured)

99
89
99
100
100
100
40
66
92
91
90
97
91
78
66
60
60
66
76
81
88
96
96
96

Low Clouds (% Sky Obscured)

65
78
93
85
92
94
40
61
62
57
54
52
44
37
33
27
39
50
62
62
63
64
58
53

Medium Clouds (% Sky Obscured)

40
35
27
20
29
37
40
50
58
64
71
90
79
55
33
25
26
27
34
55
75
96
92
75

High Clouds (% Sky Obscured)

83
52
62
63
69
89
40
62
58
38
51
76
91
61
30
2
16
32
51
60
62
51
31
31

ISS Passover

Visibility (miles)

9
6
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 (%)

20
18
13
6
7
8
6
12
11
7
13
13
11
9
7
1
3
3
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

88
94
93
88
88
86
84
83
83
86
86
88
88
88
87
82
81
82
85
87
88
90
91
91

Pressure (mb)

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

Ozone (du)

436
439
439
436
437
436
436
435
434
433
431
430
430
430
430
428
425
424
423
422
422
422
422
420

Monday 22

Waxing Crescent 12%

10:48

19:39

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
13 Bad
14 Bad
15 Bad
16 Bad
17 Bad
18 Bad
19 Bad

Sun - Rise: 08:17, Set: 16:16, Transit: 12:17. Moon - Rise: 10:48, Set: 19:39. Civil Dark: 16:55 - 07:38. Nautical Dark: 17:38 - 06:56. Astro Dark: 18:17 - 06:16

Total Clouds (% Sky Obscured)

96
96
96
90
92
96
100
100
100
100
100
100
100
99
97
96
97
99
100
97
95
92
80
68

Low Clouds (% Sky Obscured)

44
43
43
41
54
65
75
77
75
78
80
82
84
83
81
80
84
89
93
88
83
78
71
63

Medium Clouds (% Sky Obscured)

59
52
48
45
45
45
50
60
80
85
86
81
73
58
57
50
34
31
24
19
14
2
2
1

High Clouds (% Sky Obscured)

36
32
32
32
54
77
100
100
100
100
100
100
100
97
91
86
90
95
100
90
81
69
48
25

ISS Passover

Visibility (miles)

9
9
9
9
9
7
5
3
2
1
0
3
6
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
Very Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Very Light Rain
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

0
6
7
4
57
79
95
95
95
95
95
94
73
67
57
41
39
34
14
25
27
23
21
19

Precipitation Amount (mm)

0
0
0
0
0.3
0.5
0.8
0.8
0.9
1.1
0.9
0.6
0.2
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

7
7
6
6
6
6
6
6
6
6
7
9
10
12
13
14
15
16
16
17
16
15
14
13

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

91
93
91
93
93
94
94
96
98
98
98
96
94
93
94
93
91
91
93
93
94
94
93
93

Pressure (mb)

1011
1011
1011
1011
1011
1011
1011
1011
1011
1011
1011
1011
1012
1012
1013
1013
1013
1013
1013
1013
1013
1014
1014
1014

Ozone (du)

418
416
415
413
412
411
410
410
409
409
408
408
409
410
410
411
411
412
412
412
413
414
415
413

Tuesday 23

Waxing Crescent 19%

11:06

No Set

20 Bad
21 Bad
22 Bad
23 OK
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
13 Bad
14 Bad
15 Bad
16 Bad
17 Bad

Sun - Rise: 08:17, Set: 16:17, Transit: 12:17. Moon - Rise: 11:06, Set: No Set. Civil Dark: 16:56 - 07:38. Nautical Dark: 17:38 - 06:56. Astro Dark: 18:18 - 06:16

Total Clouds (% Sky Obscured)

56
46
35
25
37
49
61
48
41
36
44
54
66
71
68
65
62
61
60
63
70
84

Low Clouds (% Sky Obscured)

56
46
35
25
37
49
61
48
37
28
33
42
51
48
41
35
38
41
44
39
34
29

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
1
3
4
15
20
26
14
18
24
23
20
15

High Clouds (% Sky Obscured)

0
0
0
0
4
4
6
4
6
2
3
3
5
7
9
8
11
13
17
18
21
24

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

Fog (%)

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

Precipitation Probability (%)

15
17
17
15
15
16
13
13
12
7
10
10
5
7
6
2
4
4
2
4
4
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

Wind Speed/Direction (mph)

12
11
10
10
10
10
10
10
11
12
14
13
13
13
13
14
15
15
15
15
14
13

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

93
93
91
91
91
89
91
89
89
89
91
91
91
91
86
83
80
80
80
79
83
86

Pressure (mb)

1015
1015
1016
1016
1016
1016
1017
1017
1017
1017
1017
1018
1019
1019
1019
1019
1019
1019
1019
1019
1019
1019

Ozone (du)

412
411
408
405
402
400
397
394
391
389
386
383
381
379
382
384
387
389
391
394
393
393

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

Generated: 17/12/25 20:43:32. Forecast: 17/12/25 to 23/12/25. Timezone: UTC+0.00