Clear Outside v1.0 - International Weather Forecasts For Astronomers

Sunday 21

Waxing Crescent 2%

10:28

17:17

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
07 Bad
08 Bad
09 Bad
10 Bad
11 Bad

Sun - Rise: 08:19, Set: 16:22, Transit: 12:20. Moon - Rise: 10:28, Set: 17:17. Civil Dark: 17:00 - 07:40. Nautical Dark: 17:42 - 06:59. Astro Dark: 18:22 - 06:19

Total Clouds (% Sky Obscured)

100
98
98
100
100
100
98
93
77
97
100
100
100
100
100
100
100
100
100
100
96
99
100
82

Low Clouds (% Sky Obscured)

95
87
76
78
84
78
62
80
63
59
71
100
95
72
65
47
65
22
7
5
2
75
77
63

Medium Clouds (% Sky Obscured)

72
95
88
99
100
100
96
93
76
95
100
100
100
70
100
67
100
96
42
42
24
18
36
35

High Clouds (% Sky Obscured)

23
98
98
100
59
100
82
65
60
54
100
100
73
100
54
100
100
100
100
100
39
27
100
81

ISS Passover

Visibility (miles)

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

Light Rain
None
None
None
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

78
34
22
47
61
76
95
95
95
95
95
95
92
77
51
41
35
15
34
21
11
19
42
31

Precipitation Amount (mm)

0.4
0
0
0
0.4
0.5
1.1
1.9
1.8
1.9
0.9
0.7
0.8
0.5
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

12
12
11
10
10
10
9
8
11
11
12
12
12
12
11
11
12
11
11
11
9
8
7
7

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

79
80
82
84
87
90
90
95
93
91
93
91
93
93
93
93
93
93
91
91
93
85
76
74

Pressure (mb)

1002
1002
1001
1001
1001
1001
1001
1001
1000
1000
1000
1000
1000
1000
1000
1000
1000
1000
1000
1001
1001
1002
1003
1003

Ozone (du)

410
410
410
410
409
408
409
410
412
413
413
414
416
417
418
418
421
422
420
420
418
417
417
417

Monday 22

Waxing Crescent 6%

10:51

18:30

12 Bad
13 Bad
14 Bad
15 Bad
16 OK
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
07 Bad
08 Bad
09 Bad
10 Bad
11 OK

Sun - Rise: 08:19, Set: 16:22, Transit: 12:21. Moon - Rise: 10:51, Set: 18:30. Civil Dark: 17:01 - 07:41. Nautical Dark: 17:43 - 06:59. Astro Dark: 18:22 - 06:20

Total Clouds (% Sky Obscured)

83
74
58
55
35
85
99
100
100
91
78
58
89
91
100
54
35
51
64
80
91
95
69
34

Low Clouds (% Sky Obscured)

68
57
53
50
35
51
13
26
45
43
30
13
19
23
38
4
0
7
49
66
75
79
53
18

Medium Clouds (% Sky Obscured)

24
21
1
1
3
30
10
30
98
86
48
33
45
49
17
23
18
41
38
32
56
50
18
10

High Clouds (% Sky Obscured)

80
71
58
55
3
83
99
100
100
65
57
55
83
77
100
54
35
46
64
65
65
65
59
34

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 (%)

16
5
2
10
12
13
16
6
2
10
19
18
14
19
7
18
11
24
10
4
14
1
2
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)

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

Chance of Frost

Temperature (°C)

11
11
11
11
10
10
10
10
10
10
10
9
9
10
10
10
10
10
10
10
10
10
10
11

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

76
73
73
76
80
84
82
82
82
81
85
88
91
91
91
93
93
93
95
95
93
91
87
83

Pressure (mb)

1004
1004
1004
1005
1005
1006
1007
1008
1008
1009
1009
1010
1010
1010
1011
1012
1012
1013
1013
1014
1015
1016
1017
1018

Ozone (du)

414
408
405
403
401
395
388
384
379
377
372
367
361
357
352
351
350
355
364
364
359
354
352
352

Tuesday 23

Waxing Crescent 12%

11:09

19:46

12 OK
13 OK
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
07 Bad
08 Bad
09 Bad
10 Bad
11 Bad

Sun - Rise: 08:20, Set: 16:23, Transit: 12:21. Moon - Rise: 11:09, Set: 19:46. Civil Dark: 17:01 - 07:41. Nautical Dark: 17:43 - 06:59. Astro Dark: 18:23 - 06:20

Total Clouds (% Sky Obscured)

33
41
54
75
78
72
94
95
86
93
78
61
91
91
82
85
80
57
64
76
95
96
97
96

Low Clouds (% Sky Obscured)

33
39
54
75
78
72
94
95
86
93
78
60
86
90
82
85
74
57
64
76
86
89
93
96

Medium Clouds (% Sky Obscured)

0
3
0
0
0
0
0
0
0
0
0
2
10
9
3
5
33
5
17
40
71
48
27
1

High Clouds (% Sky Obscured)

33
41
54
15
4
4
5
0
0
0
0
0
0
0
0
1
3
0
4
10
8
8
12
8

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
2
1
0
0
0
1
1
1
2
4
7
6
10
8
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

7
6
6
5
6
6
6
5
5
4
4
3
4
4
3
2
2
2
2
1
-0
0
0
1

Dew Point (°C)

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

Relative Humidity (%)

81
81
78
81
81
83
84
84
82
85
85
85
82
82
82
82
82
84
85
87
87
86
85
82

Pressure (mb)

1018
1018
1018
1019
1020
1020
1021
1022
1022
1023
1023
1024
1024
1024
1025
1025
1025
1025
1026
1026
1027
1028
1028
1028

Ozone (du)

350
352
351
348
344
342
342
343
343
340
337
332
332
330
328
328
324
321
318
321
318
320
319
316

Wednesday 24

Waxing Crescent 19%

11:24

21:02

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 OK
04 OK
05 Good
06 Good
07 Good
08 Good
09 Good
10 Good
11 Good

Sun - Rise: 08:20, Set: 16:24, Transit: 12:22. Moon - Rise: 11:24, Set: 21:02. Civil Dark: 17:02 - 07:41. Nautical Dark: 17:44 - 07:00. Astro Dark: 18:23 - 06:20

Total Clouds (% Sky Obscured)

96
94
92
74
68
79
81
84
87
86
71
64
60
56
52
36
19
4
3
2
1
1
2
2

Low Clouds (% Sky Obscured)

95
90
89
74
68
65
66
64
71
67
64
64
60
56
52
36
19
3
3
1
1
1
1
2

Medium Clouds (% Sky Obscured)

3
13
14
1
2
40
55
60
65
68
8
0
0
0
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

15
36
36
2
2
30
50
45
30
25
3
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
6
2
5
5
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

79
76
76
75
76
78
78
79
78
76
76
76
77
79
77
79
77
76
73
72
71
73
72
70

Pressure (mb)

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

Ozone (du)

314
314
314
314
314
314
315
317
320
323
323
324
321
321
322
322
323
324
324
325
327
329
334
341

Thursday 25

Waxing Crescent 28%

11:37

22:18

12 Good
13 Good
14 Good
15 OK
16 OK
17 OK
18 OK
19 OK
20 OK
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: 08:20, Set: 16:24, Transit: 12:22. Moon - Rise: 11:37, Set: 22:18. Civil Dark: 17:03 - 07:42. Nautical Dark: 17:44 - 07:00. Astro Dark: 18:24 - 06:21

Total Clouds (% Sky Obscured)

2
2
3
20
20
15
20
15
10
23
46
63
57
52
47
67
81
95
97
99
100
100
100
100

Low Clouds (% Sky Obscured)

1
1
1
2
15
15
15
12
10
22
41
57
51
45
39
57
75
93
96
98
100
100
100
100

Medium Clouds (% Sky Obscured)

0
0
2
20
20
15
20
15
10
1
0
5
4
3
2
1
1
0
1
2
4
3
2
0

High Clouds (% Sky Obscured)

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

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
8
8
7
7
7
8
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
Very Light Rain
Very Light Rain
Very Light Rain
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

0
0
0
1
4
6
11
15
14
20
26
35
48
48
45
44
40
38
35
31
28
27
24
23

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

26
27
27
28
28
28
28
27
27
26
25
24
23
23
22
22
22
21
20
20
20
19
19
18

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

68
67
66
67
67
67
68
70
70
68
71
73
76
77
77
77
79
82
83
83
85
85
85
85

Pressure (mb)

1028
1028
1027
1026
1026
1026
1026
1026
1026
1026
1026
1026
1026
1026
1026
1026
1026
1026
1026
1026
1026
1027
1027
1027

Ozone (du)

347
353
356
357
356
357
357
357
358
359
360
360
360
360
359
359
359
358
358
359
359
360
360
359

Friday 26

Waxing Crescent 39%

11:51

23:35

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
07 Bad
08 Bad
09 Bad
10 Bad
11 Bad

Sun - Rise: 08:20, Set: 16:25, Transit: 12:23. Moon - Rise: 11:51, Set: 23:35. Civil Dark: 17:03 - 07:42. Nautical Dark: 17:45 - 07:00. Astro Dark: 18:25 - 06:21

Total Clouds (% Sky Obscured)

97
94
91
91
92
94
96
97
97
95
93
92
91
91
88
87
86
85
86
88
90
91
97
98

Low Clouds (% Sky Obscured)

97
94
91
91
92
94
96
95
93
90
87
78
82
91
88
87
86
85
86
88
90
91
88
76

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
8
14
20
24
19
18
13
7
2
2
1
0
0
0
0

High Clouds (% Sky Obscured)

1
2
2
4
5
6
27
35
50
25
30
35
28
21
14
12
6
3
1
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 (%)

23
19
15
18
16
10
7
8
5
6
6
3
3
2
0
0
0
0
1
1
1
2
2
1

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

85
82
79
78
78
78
78
78
78
78
79
79
79
80
82
82
83
83
85
83
83
82
79
76

Pressure (mb)

1027
1026
1026
1026
1027
1027
1027
1028
1028
1029
1029
1029
1029
1029
1030
1030
1030
1030
1030
1030
1031
1031
1031
1031

Ozone (du)

359
358
358
358
359
360
360
360
359
359
358
357
356
356
355
355
353
352
350
350
349
349
350
351

Saturday 27

First Quarter 50%

12:05

00:54

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

Sun - Rise: 08:20, Set: 16:26, Transit: 12:23. Moon - Rise: 12:05, Set: 00:54. Civil Dark: 17:04 - 07:42. Nautical Dark: 17:46 - 07:01. Astro Dark: 18:25 - 06:21

Total Clouds (% Sky Obscured)

92
85
79
86
93
99
79
58
37
45
56
69
56
59
47
52
47
56

Low Clouds (% Sky Obscured)

77
77
79
86
92
99
79
58
37
45
56
69
56
59
47
52
47
56

Medium Clouds (% Sky Obscured)

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

High Clouds (% Sky Obscured)

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

ISS Passover

Visibility (miles)

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

Precipitation Type

None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

7
7
5
11
13
14
17
18
16
20
21
21
18
15
6
9
9
6

Precipitation Amount (mm)

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
20
18
19
20
19
18
17
17
18

Chance of Frost

Temperature (°C)

7
7
7
7
7
6
6
6
6
6
6
6
7
7
6
6
6
7

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

74
74
72
71
72
74
76
78
79
82
79
76
75
75
74
75
75
75

Pressure (mb)

1031
1031
1030
1030
1030
1030
1031
1031
1030
1030
1030
1030
1030
1030
1030
1030
1030
1030

Ozone (du)

352
352
351
351
350
349
349
348
348
347
347
346
345
344
342
340
339
338

Forecast for Penzance, Cornwall, United Kingdom (50.12,-5.54)

Generated: 21/12/25 12:11:51. Forecast: 21/12/25 to 27/12/25. Timezone: UTC+0.00