Clear Outside v1.0 - International Weather Forecasts For Astronomers

Thursday 18

Waning Crescent 1%

08:20

15:15

19 Bad
20 Bad
21 Bad
22 Bad
23 Bad
00 OK
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 OK
15 OK
16 OK
17 OK
18 OK

Sun - Rise: 08:16, Set: 16:19, Transit: 12:18. Moon - Rise: 08:20, Set: 15:15. Civil Dark: 16:58 - 07:37. Nautical Dark: 17:40 - 06:56. Astro Dark: 18:19 - 06:16

Total Clouds (% Sky Obscured)

100
100
96
60
48
33
44
40
40
37
46
49
54
47
42
53
40
36
40
31
13
27
39
35

Low Clouds (% Sky Obscured)

32
31
39
44
45
30
41
40
40
37
46
49
54
47
42
53
40
36
40
31
13
27
39
35

Medium Clouds (% Sky Obscured)

25
0
0
0
2
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

99
95
38
60
48
33
44
11
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

ISS Passover

Visibility (miles)

8
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
2
7
17
8
9
17
12
12
22
12
18
19
20
21
18
8
5
5
6
8

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)

18
14
15
13
14
14
15
15
16
16
16
15
15
14
14
13
14
15
15
14
12
10
9
9

Chance of Frost

Temperature (°C)

8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
9
10
10
10
10
10
9
9
8

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

88
77
75
73
70
69
71
73
73
77
77
77
77
77
77
76
76
74
76
76
76
77
81
82

Pressure (mb)

1002
1004
1006
1007
1008
1009
1010
1011
1011
1012
1013
1014
1014
1015
1016
1017
1017
1018
1018
1018
1018
1018
1018
1018

Ozone (du)

364
372
371
371
377
380
380
377
385
391
389
385
380
370
365
352
337
330
319
306
296
291
293
291

Friday 19

Waning Crescent 0%

09:13

16:10

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

Sun - Rise: 08:16, Set: 16:20, Transit: 12:18. Moon - Rise: 09:13, Set: 16:10. Civil Dark: 16:58 - 07:38. Nautical Dark: 17:40 - 06:56. Astro Dark: 18:20 - 06:17

Total Clouds (% Sky Obscured)

41
45
35
40
46
38
45
44
57
55
71
62
62
52
58
53
100
100
100
100
98
90
83
99

Low Clouds (% Sky Obscured)

41
45
35
40
44
38
43
44
54
53
69
60
60
49
56
47
57
84
80
73
55
48
55
75

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
2
25
20
20
20
20
76
81
99
92
95
90
80
90

High Clouds (% Sky Obscured)

0
1
2
3
46
21
6
13
50
50
50
50
50
45
50
50
100
97
99
100
88
70
70
97

ISS Passover

Visibility (miles)

9
9
8
9
9
9
9
9
9
9
9
9
9
9
9
7
4
5
6
9
9
7
4
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
Light Rain
Light Rain
Very Light Rain
None
None
None
Light Rain
None
None

Precipitation Probability (%)

12
25
26
10
17
18
22
9
21
28
16
20
18
11
42
83
93
80
54
56
48
81
55
31

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.5
0.5
0.3
0
0
0
0.5
0
0

Wind Speed/Direction (mph)

9
10
10
10
12
13
14
15
16
17
19
20
21
22
21
22
23
23
23
16
14
14
14
14

Chance of Frost

Temperature (°C)

8
8
8
8
8
9
8
9
8
8
9
9
9
9
9
9
10
10
10
10
9
9
9
9

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

84
82
82
84
81
81
82
81
75
75
75
70
69
72
74
74
84
87
88
85
81
84
88
87

Pressure (mb)

1017
1017
1016
1016
1015
1014
1013
1012
1011
1010
1009
1009
1008
1007
1007
1006
1005
1004
1003
1003
1003
1002
1002
1002

Ozone (du)

291
291
290
284
282
286
287
290
294
296
299
301
306
312
318
319
317
313
314
318
326
329
337
355

Saturday 20

New Moon 2%

09:55

17:15

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

Sun - Rise: 08:17, Set: 16:20, Transit: 12:19. Moon - Rise: 09:55, Set: 17:15. Civil Dark: 16:59 - 07:38. Nautical Dark: 17:41 - 06:57. Astro Dark: 18:20 - 06:17

Total Clouds (% Sky Obscured)

100
100
100
99
100
100
96
100
100
100
100
86
90
87
97
86
96
95
93
93
91
89
87
89

Low Clouds (% Sky Obscured)

94
86
50
55
69
58
58
42
46
42
49
65
55
66
56
70
63
59
56
49
48
44
40
55

Medium Clouds (% Sky Obscured)

97
87
100
70
57
47
86
93
81
100
100
85
88
85
91
82
91
47
53
79
53
62
77
77

High Clouds (% Sky Obscured)

100
100
57
64
90
100
87
100
100
100
100
65
50
50
89
42
53
9
16
21
13
6
0
0

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
4
2
3
8
9
9
4
5
8
2
4

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

Precipitation Probability (%)

35
32
23
36
42
30
23
29
34
51
45
45
78
95
95
95
63
48
55
72
86
92
80
70

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0.2
0
0
0.2
1.1
0.8
0.8
0
0
0
0.3
0.6
0.9
0.6
0.4

Wind Speed/Direction (mph)

14
14
13
13
10
9
7
6
5
6
6
6
7
8
9
10
11
10
10
11
14
13
12
10

Chance of Frost

Temperature (°C)

9
9
9
9
9
9
9
9
9
9
9
9
9
8
8
9
9
9
10
10
9
9
9
9

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

85
82
78
77
77
77
78
78
78
80
80
80
81
82
91
91
91
90
76
73
78
84
84
82

Pressure (mb)

1002
1002
1002
1001
1001
1001
1001
1001
1001
1001
1000
1000
1000
1000
1000
1000
1000
1000
999
998
998
997
997
997

Ozone (du)

365
346
341
344
352
368
393
419
420
424
429
429
431
431
430
433
439
447
453
453
455
455
454
455

Sunday 21

Waxing Crescent 6%

10:26

18:28

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

Sun - Rise: 08:17, Set: 16:21, Transit: 12:19. Moon - Rise: 10:26, Set: 18:28. Civil Dark: 16:59 - 07:39. Nautical Dark: 17:41 - 06:57. Astro Dark: 18:21 - 06:18

Total Clouds (% Sky Obscured)

90
90
96
98
100
85
99
99
99
100
100
99
97
94
71
73
66
73
80
80
87
93
96
96

Low Clouds (% Sky Obscured)

70
81
90
95
79
77
88
81
67
71
64
83
78
71
59
48
36
40
40
40
40
39
39
36

Medium Clouds (% Sky Obscured)

58
63
54
80
83
43
49
98
95
84
91
91
94
77
34
73
66
73
76
80
73
68
59
71

High Clouds (% Sky Obscured)

0
0
15
76
92
51
71
39
65
85
100
86
76
22
8
56
66
70
65
60
61
72
87
77

ISS Passover

Visibility (miles)

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

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

Precipitation Probability (%)

62
47
33
26
20
40
52
49
47
41
43
34
34
35
34
34
35
35
28
17
21
18
21
26

Precipitation Amount (mm)

0.2
0
0
0
0
0
0.3
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

11
15
16
16
15
15
15
14
14
15
15
16
15
13
13
11
11
11
11
11
10
10
9
10

Chance of Frost

Temperature (°C)

9
9
8
8
9
9
9
9
9
9
9
9
9
9
9
9
10
10
10
9
9
9
8
8

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

82
82
87
90
81
74
75
72
74
75
78
78
75
75
77
73
71
71
74
73
74
78
79
78

Pressure (mb)

998
1000
1001
1001
1001
1002
1002
1002
1002
1002
1003
1003
1004
1004
1005
1005
1006
1006
1006
1006
1007
1007
1007
1008

Ozone (du)

456
454
453
452
452
454
454
456
457
455
451
447
444
442
440
437
434
430
422
417
413
404
396
391

Monday 22

Waxing Crescent 12%

10:49

No Set

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

Sun - Rise: 08:18, Set: 16:21, Transit: 12:20. Moon - Rise: 10:49, Set: No Set. Civil Dark: 17:00 - 07:39. Nautical Dark: 17:42 - 06:58. Astro Dark: 18:21 - 06:18

Total Clouds (% Sky Obscured)

96
96
95
94
91
94
97
100
99
98
97
79
59
38
56
80
88
94
97
100
99
98
96
96

Low Clouds (% Sky Obscured)

35
33
43
54
68
74
89
100
97
94
91
38
38
38
50
60
70
77
86
95
87
82
78
76

Medium Clouds (% Sky Obscured)

78
94
89
87
56
87
19
84
84
80
80
75
59
38
49
52
55
65
81
90
96
97
96
96

High Clouds (% Sky Obscured)

64
54
39
27
20
20
20
25
31
50
69
79
57
35
35
31
44
56
59
63
51
38
28
29

ISS Passover

Visibility (miles)

6
8
9
9
9
9
9
8
9
8
9
7
8
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 (%)

21
16
19
10
2
13
23
23
28
24
32
36
29
20
20
18
15
15
14
12
12
10
4
14

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
10
11
12
12
13
14
14
14
14
13
18
18
19
20
20
20
20
19
19
19
18
19

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
8
7

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

77
77
78
77
74
75
77
74
74
73
75
77
77
74
74
73
73
73
71
71
70
71
71
71

Pressure (mb)

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

Ozone (du)

387
383
379
377
371
365
363
360
357
354
351
351
353
355
358
360
363
366
369
373
376
379
382
385

Tuesday 23

Waxing Crescent 19%

11:08

19:44

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

Sun - Rise: 08:18, Set: 16:22, Transit: 12:20. Moon - Rise: 11:08, Set: 19:44. Civil Dark: 17:01 - 07:40. Nautical Dark: 17:42 - 06:58. Astro Dark: 18:22 - 06:18

Total Clouds (% Sky Obscured)

96
96
95
94
94
95
97
99
97
95
93
91
89
87
85
84
82
86
88
91
86
83
81
86

Low Clouds (% Sky Obscured)

75
77
73
75
79
84
91
97
95
93
91
89
86
84
83
84
82
86
88
91
85
81
70
70

Medium Clouds (% Sky Obscured)

92
85
62
45
38
36
38
40
42
39
44
39
33
24
21
14
6
4
3
2
2
2
2
2

High Clouds (% Sky Obscured)

25
10
0
0
0
0
0
0
0
0
0
14
22
29
36
32
31
19
10
6
5
4
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
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 (%)

17
17
21
23
22
22
22
18
19
17
8
15
15
9
19
24
27
27
26
25
26
27
26
23

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
19
19
19
19
19
19
19
19
19
19
19
18
18
17
17
18
18
18
19
19
19
19
19

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

3
3
3
3
3
3
3
3
3
3
3
3
4
4
4
4
4
4
4
4
4
3
3
3

Relative Humidity (%)

75
78
79
81
81
80
80
82
83
83
85
88
88
86
85
85
85
85
82
82
81
79
81
80

Pressure (mb)

1013
1014
1014
1015
1015
1016
1016
1017
1017
1018
1018
1019
1019
1020
1021
1021
1021
1021
1021
1021
1021
1021
1021
1021

Ozone (du)

387
389
391
390
389
389
387
386
384
383
382
380
380
379
378
377
375
374
378
383
387
384
381
378

Wednesday 24

Waxing Crescent 28%

11:23

21:00

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
08 Bad
09 Bad
10 Bad
11 Bad

Sun - Rise: 08:18, Set: 16:23, Transit: 12:21. Moon - Rise: 11:23, Set: 21:00. Civil Dark: 17:01 - 07:40. Nautical Dark: 17:43 - 06:58. Astro Dark: 18:22 - 06:19

Total Clouds (% Sky Obscured)

91
91
78
61
44
53
62
70
76
82
88
76
65
54
48
41
34

Low Clouds (% Sky Obscured)

64
62
59
56
44
51
54
58
67
75
82
76
65
54
48
41
34

Medium Clouds (% Sky Obscured)

1
0
11
22
32
34
35
30
29
23
22
29
30
28
23
13
0

High Clouds (% Sky Obscured)

1
1
1
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

Fog (%)

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

Precipitation Probability (%)

20
10
16
16
9
26
30
20
26
26
21
34
39
42
40
33
18

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

19
19
18
18
19
19
18
18
17
16
16
15
15
15
16
16
17

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

78
75
72
73
74
77
76
76
76
77
77
77
77
77
77
74
72

Pressure (mb)

1021
1022
1022
1021
1021
1021
1020
1020
1019
1019
1019
1018
1018
1019
1019
1019
1019

Ozone (du)

377
376
375
372
369
366
364
362
360
359
358
357
355
353
351
350
350

Forecast for Constantine, Cornwall, United Kingdom (50.12,-5.17)

Generated: 18/12/25 19:49:09. Forecast: 18/12/25 to 24/12/25. Timezone: UTC+0.00