Clear Outside v1.0 - International Weather Forecasts For Astronomers

Friday 19

Waning Crescent 1%

08:13

14:45

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

Sun - Rise: 08:06, Set: 15:54, Transit: 12:00. Moon - Rise: 08:13, Set: 14:45. Civil Dark: 16:34 - 07:25. Nautical Dark: 17:18 - 06:42. Astro Dark: 17:59 - 06:01

Total Clouds (% Sky Obscured)

96
97
98
96
98
77
20
33
43
47
59
43
33
23
24
33
27
40
48
51
54
71
64
61

Low Clouds (% Sky Obscured)

0
0
4
9
6
12
19
32
43
47
59
43
33
23
24
33
27
40
48
51
54
71
64
61

Medium Clouds (% Sky Obscured)

79
72
62
55
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
3

High Clouds (% Sky Obscured)

91
84
90
61
74
28
1
0
0
0
0
0
0
0
0
0
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
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
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

3
2
0
0
1
1
3
3
4
4
6
5
5
5
4
4
5
4
4
3
3
4
4
4

Dew Point (°C)

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

Relative Humidity (%)

87
87
85
86
86
88
88
85
84
82
84
85
90
93
93
94
94
94
94
93
94
96
96
94

Pressure (mb)

1010
1011
1011
1013
1013
1014
1015
1016
1016
1016
1016
1016
1017
1017
1017
1018
1018
1018
1018
1017
1017
1016
1016
1015

Ozone (du)

356
351
351
356
355
357
358
362
358
354
343
315
308
297
290
284
283
277
278
283
288
292
300
295

Saturday 20

New Moon 0%

09:06

15:39

04 Bad
05 Bad
06 Bad
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 Bad
02 Bad
03 Bad

Sun - Rise: 08:06, Set: 15:54, Transit: 12:00. Moon - Rise: 09:06, Set: 15:39. Civil Dark: 16:35 - 07:26. Nautical Dark: 17:18 - 06:42. Astro Dark: 17:59 - 06:01

Total Clouds (% Sky Obscured)

73
81
81
77
79
70
68
59
49
36
42
55
78
64
76
75
69
82
82
90
95
94
94
93

Low Clouds (% Sky Obscured)

69
77
78
77
79
70
68
59
49
36
42
55
75
60
72
70
64
69
70
69
76
77
88
77

Medium Clouds (% Sky Obscured)

44
65
65
45
0
0
0
0
0
0
0
0
0
1
55
60
60
57
66
83
81
83
66
87

High Clouds (% Sky Obscured)

73
70
70
10
0
0
0
0
0
0
0
2
35
55
60
60
50
50
40
61
76
26
27
35

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
1
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
1
5
7
3
0
0
6
13
0
0
1
0
0
0
2
3
10
29
19
39
39
37
22

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

94
96
96
96
96
96
94
90
85
82
81
84
90
91
91
91
91
85
86
90
91
94
96
96

Pressure (mb)

1015
1014
1013
1013
1013
1013
1012
1011
1010
1009
1009
1008
1008
1008
1007
1007
1007
1006
1006
1006
1005
1005
1005
1005

Ozone (du)

291
287
289
292
291
285
280
280
281
287
291
293
296
300
302
302
304
303
303
307
304
305
300
303

Sunday 21

Waxing Crescent 2%

09:47

16:46

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

Sun - Rise: 08:07, Set: 15:55, Transit: 12:01. Moon - Rise: 09:47, Set: 16:46. Civil Dark: 16:35 - 07:26. Nautical Dark: 17:19 - 06:43. Astro Dark: 17:59 - 06:02

Total Clouds (% Sky Obscured)

100
100
93
99
100
93
97
94
97
99
100
99
100
100
100
100
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

92
100
87
97
99
84
80
78
86
95
68
69
74
81
84
94
86
91
84
87
88
89
90
92

Medium Clouds (% Sky Obscured)

100
100
86
77
72
51
33
71
86
89
84
91
100
100
100
100
100
100
100
100
97
94
92
95

High Clouds (% Sky Obscured)

33
35
55
59
55
42
61
61
81
86
100
95
100
93
100
100
92
100
98
100
100
100
100
100

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
8
9
9
9
4
9
9
9
9
9
9
9
9
9
9
9

Fog (%)

0
0
15
95
73
32
8
3
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1

Precipitation Type

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

Precipitation Probability (%)

40
62
47
33
22
8
14
42
43
33
36
63
64
33
34
9
8
35
51
48
32
42
45
45

Precipitation Amount (mm)

0
0.3
0
0
0
0
0
0
0
0
0
0.4
0.4
0
0
0
0
0
0.3
0.3
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

96
94
94
94
93
93
91
93
95
88
90
93
95
95
95
93
90
91
91
90
91
90
90
91

Pressure (mb)

1005
1004
1004
1004
1004
1005
1005
1004
1004
1004
1003
1003
1004
1004
1004
1004
1004
1004
1004
1004
1004
1004
1004
1003

Ozone (du)

312
316
318
319
320
330
341
352
366
379
383
386
387
387
389
391
391
391
389
389
389
391
393
395

Monday 22

Waxing Crescent 6%

10:17

18:01

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

Sun - Rise: 08:07, Set: 15:55, Transit: 12:01. Moon - Rise: 10:17, Set: 18:01. Civil Dark: 16:36 - 07:27. Nautical Dark: 17:19 - 06:43. Astro Dark: 18:00 - 06:02

Total Clouds (% Sky Obscured)

100
100
100
100
100
95
91
86
90
94
98
99
99
100
97
94
91
93
96
96
94
98
100
100

Low Clouds (% Sky Obscured)

93
94
89
83
74
76
62
72
78
87
89
94
90
91
77
71
66
61
61
62
64
70
82
90

Medium Clouds (% Sky Obscured)

97
100
90
77
65
56
24
2
4
55
55
31
8
14
59
60
19
46
74
77
53
70
84
76

High Clouds (% Sky Obscured)

100
100
100
100
100
74
51
30
45
59
74
72
64
63
61
54
46
45
45
19
25
22
31
25

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 (%)

1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1

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 (%)

36
27
30
15
10
10
9
0
0
0
0
0
0
0
1
2
3
2
2
0
1
1
0
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

93
93
93
94
93
91
90
87
84
84
84
90
91
93
93
91
91
89
91
89
91
91
91
93

Pressure (mb)

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

Ozone (du)

395
395
396
398
398
397
398
400
399
398
396
396
397
398
400
399
400
400
400
400
399
398
398
399

Tuesday 23

Waxing Crescent 12%

10:38

19:19

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

Sun - Rise: 08:08, Set: 15:56, Transit: 12:02. Moon - Rise: 10:38, Set: 19:19. Civil Dark: 16:36 - 07:27. Nautical Dark: 17:20 - 06:44. Astro Dark: 18:01 - 06:03

Total Clouds (% Sky Obscured)

100
100
100
100
99
99
100
100
95
91
85
89
93
98
96
96
96
95
94
93
93
93
93
95

Low Clouds (% Sky Obscured)

98
99
98
97
95
94
93
91
89
87
85
87
90
93
94
95
96
95
94
93
93
93
93
95

Medium Clouds (% Sky Obscured)

65
57
39
52
57
61
47
60
39
18
0
0
0
0
0
0
0
1
1
2
23
41
53
42

High Clouds (% Sky Obscured)

17
0
18
38
58
43
29
14
9
5
0
16
33
51
0
0
0
3
5
10
14
17
21
22

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 (%)

1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1

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 (%)

12
14
15
23
29
31
27
23
24
22
20
17
16
13
12
14
14
13
15
16
14
11
9
10

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
7
8
8
8
8
9
10
11
12
12
12
12
13
13
11
11
11
11
12
12
13
13
13

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

94
94
94
96
98
98
98
98
96
94
93
91
90
89
89
88
88
88
88
88
86
88
86
86

Pressure (mb)

1008
1009
1009
1009
1009
1010
1010
1010
1010
1010
1010
1011
1011
1012
1013
1017
1017
1018
1018
1018
1019
1019
1020
1020

Ozone (du)

397
396
396
395
398
396
396
393
392
390
389
390
391
393
391
393
394
395
395
396
396
393
390
386

Wednesday 24

Waxing Crescent 19%

10:54

20:37

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

Sun - Rise: 08:08, Set: 15:56, Transit: 12:02. Moon - Rise: 10:54, Set: 20:37. Civil Dark: 16:37 - 07:28. Nautical Dark: 17:20 - 06:44. Astro Dark: 18:01 - 06:03

Total Clouds (% Sky Obscured)

98
100
100
100
100
99
99
98
94
89
84
81
78
75
78
81
84
82
80
76
77
75
77
79

Low Clouds (% Sky Obscured)

98
100
100
100
100
99
99
98
94
89
84
81
78
75
78
81
84
82
80
75
77
75
77
79

Medium Clouds (% Sky Obscured)

35
30
22
13
0
0
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

20
17
12
6
1
1
1
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 (%)

1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1

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 (%)

11
12
11
10
4
9
11
13
12
10
7
6
4
0
0
0
0
1
1
0
0
2
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)

14
15
15
15
16
16
16
16
16
16
17
17
17
18
18
17
17
17
16
16
15
15
15
14

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

86
86
86
86
86
86
85
86
85
83
79
77
75
72
70
73
77
80
80
81
84
81
80
78

Pressure (mb)

1021
1021
1022
1022
1023
1024
1024
1024
1025
1025
1025
1025
1025
1026
1026
1026
1027
1027
1027
1027
1027
1027
1027
1027

Ozone (du)

386
386
386
382
379
375
376
377
378
375
372
369
367
365
362
360
358
356
355
353
352
350
348
347

Thursday 25

Waxing Crescent 28%

11:07

21:56

Sun - Rise: 08:08, Set: 15:57, Transit: 12:03. Moon - Rise: 11:07, Set: 21:56. Civil Dark: 16:38 - 07:28. Nautical Dark: 17:21 - 06:45. Astro Dark: 18:02 - 06:04

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 Great Missenden, Buckinghamshire, United Kingdom (51.70,-0.70)

Generated: 19/12/25 04:14:36. Forecast: 19/12/25 to 25/12/25. Timezone: UTC+0.00