Clear Outside v1.0 - International Weather Forecasts For Astronomers

Saturday 20

New Moon 0%

09:56

15:39

12 Bad
13 Bad
14 OK
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: 08:14, Set: 15:55, Transit: 12:05. Moon - Rise: 09:56, Set: 15:39. Civil Dark: 16:37 - 07:33. Nautical Dark: 17:21 - 06:49. Astro Dark: 18:02 - 06:07

Total Clouds (% Sky Obscured)

52
44
42
55
43
100
96
100
91
82
98
96
96
100
100
100
100
100
99
94
99
99
99
98

Low Clouds (% Sky Obscured)

39
38
42
55
43
57
58
59
61
62
68
75
80
82
73
72
71
76
79
74
79
80
83
74

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
2
64
45
31
41
52
83
35
90
97
55
60
34
25
49
53
40
35

High Clouds (% Sky Obscured)

0
0
0
3
6
97
77
95
80
61
46
3
2
9
46
100
99
100
95
78
69
89
86
76

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
28
30
28

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
1
4
28
27
23
15
6
5
11
2
1
0
2
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

87
84
85
88
88
91
91
91
90
91
91
91
91
94
93
94
93
94
96
98
98
96
94
91

Pressure (mb)

1010
1010
1009
1008
1008
1007
1007
1007
1007
1007
1006
1006
1006
1006
1006
1006
1006
1006
1006
1007
1007
1008
1008
1008

Ozone (du)

287
291
291
295
297
300
299
299
301
303
302
303
315
315
311
312
310
312
316
319
321
326
331
336

Sunday 21

Waxing Crescent 2%

10:24

16:47

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: 08:15, Set: 15:56, Transit: 12:05. Moon - Rise: 10:24, Set: 16:47. Civil Dark: 16:37 - 07:33. Nautical Dark: 17:21 - 06:49. Astro Dark: 18:03 - 06:08

Total Clouds (% Sky Obscured)

97
97
94
100
100
100
100
100
100
100
100
100
100
100
100
100
100
86
95
100
99
100
100
100

Low Clouds (% Sky Obscured)

84
89
58
57
67
75
76
82
97
98
98
89
98
96
77
69
70
59
55
55
53
53
52
50

Medium Clouds (% Sky Obscured)

91
92
80
100
100
100
99
100
100
100
100
100
100
100
100
84
72
29
34
39
39
32
30
72

High Clouds (% Sky Obscured)

68
81
80
98
100
87
100
100
100
100
100
100
100
100
100
100
95
55
75
100
70
65
100
92

ISS Passover

Visibility (miles)

9
9
9
9
3
5
2
5
3
1
5
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
Light Rain
Very Light Rain
Light Rain
Light Rain
Very 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 (%)

1
2
14
63
66
92
88
80
95
95
95
95
95
94
58
24
10
4
0
0
0
0
0
0

Precipitation Amount (mm)

0
0
0
0.4
0.2
0.6
0.5
0.3
0.9
1.2
1.3
0.8
0.7
0.7
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

90
87
88
91
96
95
96
96
96
98
96
95
96
95
91
91
95
96
96
96
96
96
93
90

Pressure (mb)

1008
1007
1007
1007
1007
1006
1006
1006
1006
1006
1006
1005
1005
1005
1005
1004
1004
1004
1005
1005
1006
1007
1007
1007

Ozone (du)

343
345
347
348
349
354
356
358
359
361
365
367
369
369
370
372
372
372
369
370
370
369
371
374

Monday 22

Waxing Crescent 6%

10:45

18:02

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 Bad
04 Bad
05 Bad
06 Bad
07 Bad
08 Bad
09 Bad
10 Bad
11 Bad

Sun - Rise: 08:15, Set: 15:56, Transit: 12:06. Moon - Rise: 10:45, Set: 18:02. Civil Dark: 16:38 - 07:34. Nautical Dark: 17:22 - 06:50. Astro Dark: 18:03 - 06:08

Total Clouds (% Sky Obscured)

100
96
76
100
84
81
89
88
89
97
99
99
99
96
94
91
97
95
92
99
100
100
92
86

Low Clouds (% Sky Obscured)

78
74
54
53
48
55
66
73
76
89
83
88
88
83
85
91
90
90
90
85
80
75
76
75

Medium Clouds (% Sky Obscured)

69
58
6
7
65
70
47
16
7
5
17
15
23
24
33
11
14
17
16
13
12
15
22
26

High Clouds (% Sky Obscured)

100
73
49
100
66
45
43
38
59
62
97
99
98
90
87
63
45
33
19
29
20
15
11
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
52
72
83
91
97
100
100
100
100
100
100
100
100
100
100
100
100
100

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
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

87
85
87
91
93
94
94
94
94
93
94
94
94
96
94
94
96
94
94
94
96
96
94
91

Pressure (mb)

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

Ozone (du)

376
378
381
382
379
376
374
372
369
366
365
362
357
351
349
347
347
346
345
343
341
340
342
341

Tuesday 23

Waxing Crescent 12%

11:01

19:21

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 OK
11 OK

Sun - Rise: 08:15, Set: 15:57, Transit: 12:06. Moon - Rise: 11:01, Set: 19:21. Civil Dark: 16:38 - 07:34. Nautical Dark: 17:22 - 06:50. Astro Dark: 18:04 - 06:09

Total Clouds (% Sky Obscured)

66
90
97
100
100
100
100
100
100
99
97
93
91
90
90
83
77
70
61
57
48
47
38
20

Low Clouds (% Sky Obscured)

66
84
96
100
100
100
98
97
95
93
91
90
90
89
90
83
77
70
61
44
41
37
30
15

Medium Clouds (% Sky Obscured)

27
34
34
39
39
68
88
88
89
76
63
35
30
25
25
25
25
30
30
12
0
0
0
0

High Clouds (% Sky Obscured)

1
3
2
8
15
17
28
26
30
40
45
50
45
45
45
45
45
45
45
45
19
5
4
12

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 (%)

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

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
2
4
5
3
2
2
1
3
3
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)

8
9
9
10
11
11
11
12
11
10
10
10
11
11
11
11
12
13
14
15
15
16
17
16

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

88
88
90
91
86
86
86
82
81
82
83
85
85
86
86
88
88
86
82
83
86
85
79
79

Pressure (mb)

1018
1019
1019
1019
1020
1021
1021
1021
1022
1022
1023
1023
1023
1024
1024
1025
1025
1025
1026
1027
1028
1029
1029
1030

Ozone (du)

339
336
332
334
340
341
340
338
336
336
337
338
338
336
335
333
332
330
330
330
333
336
338
337

Wednesday 24

Waxing Crescent 19%

11:13

20:40

12 OK
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: 08:16, Set: 15:58, Transit: 12:07. Moon - Rise: 11:13, Set: 20:40. Civil Dark: 16:39 - 07:35. Nautical Dark: 17:23 - 06:50. Astro Dark: 18:04 - 06:09

Total Clouds (% Sky Obscured)

40
58
61
59
60
56
55
53
57
56
54
49
60
78
91
86
86
77
78
76
81
84
86
91

Low Clouds (% Sky Obscured)

31
47
61
59
57
56
55
53
57
54
48
43
54
65
76
81
83
77
78
76
81
84
86
91

Medium Clouds (% Sky Obscured)

0
2
1
0
0
0
0
0
0
6
12
18
29
46
55
50
50
50
29
28
37
38
49
50

High Clouds (% Sky Obscured)

24
35
4
6
6
2
3
1
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 (%)

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

Precipitation Type

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

Precipitation Probability (%)

1
1
1
3
3
2
3
3
1
2
2
0
14
18
14
29
36
38
41
46
54
47
39
29

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.2
0
0
0

Wind Speed/Direction (mph)

17
16
16
15
15
15
15
15
15
14
14
14
14
14
14
14
14
13
14
14
14
15
15
15

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

80
78
78
76
75
76
74
73
76
77
77
77
77
76
77
77
80
81
84
86
86
88
82
74

Pressure (mb)

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

Ozone (du)

338
338
338
336
332
331
329
334
339
342
344
344
343
343
343
342
343
343
344
344
345
346
346
347

Thursday 25

Waxing Crescent 28%

11:24

21:59

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: 08:16, Set: 15:58, Transit: 12:07. Moon - Rise: 11:24, Set: 21:59. Civil Dark: 16:40 - 07:35. Nautical Dark: 17:24 - 06:51. Astro Dark: 18:05 - 06:09

Total Clouds (% Sky Obscured)

96
96
96
97
98
99
99
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

96
96
96
97
98
99
99
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100

Medium Clouds (% Sky Obscured)

43
28
17
17
24
34
37
39
34
27
20
16
21
25
28
18
10
1
1
1
1
17
34
47

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
2
3
17
30
44

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
6
3
0
3
6
9
9
9
9
9
9
9
9
9
9
9
9

Fog (%)

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

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 (%)

27
23
19
19
19
18
25
28
30
26
26
29
27
24
20
20
19
17
17
15
10
11
12
12

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

Chance of Frost

Temperature (°C)

4
3
3
3
3
3
3
3
2
2
2
2
2
2
2
2
2
2
2
2
2
2
3
3

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

71
69
69
69
70
72
73
80
88
96
93
86
83
83
83
83
81
80
80
80
79
79
80
82

Pressure (mb)

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

Ozone (du)

348
353
359
365
364
362
360
357
353
350
348
347
346
346
346
346
346
345
345
345
346
347
347
347

Friday 26

Waxing Crescent 39%

11:34

23:19

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 OK
05 Good

Sun - Rise: 08:16, Set: 15:59, Transit: 12:08. Moon - Rise: 11:34, Set: 23:19. Civil Dark: 16:40 - 07:35. Nautical Dark: 17:24 - 06:51. Astro Dark: 18:06 - 06:09

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
97
95
91
81
65
55
41
25
3

Low Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
96
92
88
78
65
55
38
22
3

Medium Clouds (% Sky Obscured)

57
64
75
54
32
11
7
4
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

29
21
9
5
3
0
0
0
0
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 (%)

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

Precipitation Type

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

Precipitation Probability (%)

12
10
7
7
6
3
4
5
1
1
3
2
1
1
0
1
1
0

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)

11
11
11
12
12
13
13
13
14
14
14
14
14
13
13
12
12
11

Chance of Frost

Temperature (°C)

4
4
4
4
4
4
4
4
4
4
4
4
3
3
3
3
3
2

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

82
82
83
83
83
82
82
79
77
76
77
80
82
85
86
89
89
91

Pressure (mb)

1030
1030
1031
1031
1031
1031
1032
1032
1033
1033
1034
1034
1034
1034
1035
1035
1035
1035

Ozone (du)

347
347
346
346
346
346
346
346
346
347
345
344
343
341
340
338
335
332

Forecast for Henley in Arden, Warwickshire, United Kingdom (52.29,-1.78)

Generated: 20/12/25 12:05:43. Forecast: 20/12/25 to 26/12/25. Timezone: UTC+0.00