Clear Outside v1.0 - International Weather Forecasts For Astronomers

Thursday 18

Waning Crescent 3%

07:08

14:04

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
04 Bad
05 Bad
06 Bad

Sun - Rise: 08:05, Set: 15:53, Transit: 11:59. Moon - Rise: 07:08, Set: 14:04. Civil Dark: 16:34 - 07:25. Nautical Dark: 17:17 - 06:42. Astro Dark: 17:58 - 06:01

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
100
100
100
100
98
100
100
100
100
100
89
96
100
100

Low Clouds (% Sky Obscured)

79
78
72
100
100
90
95
98
79
98
66
78
76
75
73
78
75
48
0
29
27
11
17
18

Medium Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
100
66
48
95
98
99
100
86
97
77
89
81
100
100

High Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
100
90
88
100
56
75
100
100
100
100
89
96
88
100

ISS Passover

Visibility (miles)

9
9
8
0
2
2
3
2
3
3
9
9
9
9
9
6
9
9
9
9
9
9
9
9

Fog (%)

0
1
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
Moderate Rain
Moderate Rain
Moderate Rain
Light Rain
Light Rain
Very Light Rain
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

4
6
3
95
95
95
95
95
95
75
22
3
3
35
49
35
22
4
0
0
0
0
0
0

Precipitation Amount (mm)

0
0
0
1.9
3.5
2.8
2.8
1.7
1
0.3
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

8
8
7
8
11
11
15
20
20
19
16
14
16
16
16
14
13
13
11
8
9
10
10
10

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

8
8
7
7
6
6
4
4
2
2
3
5
4
4
5
5
5
5
3
3
2
2
1
0

Dew Point (°C)

10
10
10
10
10
10
9
9
9
8
9
9
8
8
8
8
8
7
5
5
4
4
3
3

Relative Humidity (%)

95
96
96
98
96
96
93
91
88
88
90
90
85
88
88
90
87
90
85
87
85
88
86
85

Pressure (mb)

1007
1007
1006
1006
1004
1003
1001
1000
1000
1000
1000
1000
1002
1003
1004
1004
1005
1007
1008
1009
1010
1011
1011
1012

Ozone (du)

296
293
289
286
286
288
288
288
286
288
291
300
315
325
334
337
343
343
338
340
343
352
355
355

Friday 19

Waning Crescent 1%

08:13

14:45

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

100
100
90
25
34
39
56
53
64
38
22
26
20
0
23
41
44
50
55
53
60
64
69
63

Low Clouds (% Sky Obscured)

0
8
21
25
34
39
56
53
64
38
22
26
20
0
23
41
44
50
55
53
60
64
69
63

Medium Clouds (% Sky Obscured)

100
30
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

100
100
31
2
0
0
0
0
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 (%)

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
1
4
4
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)

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

Chance of Frost

Temperature (°C)

5
5
6
6
7
8
9
9
8
8
7
6
6
6
5
4
3
3
3
3
3
3
3
3

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

83
83
85
85
84
81
81
82
84
88
93
93
93
93
93
94
93
94
96
96
96
96
96
94

Pressure (mb)

1013
1014
1015
1015
1016
1016
1016
1016
1017
1017
1017
1018
1018
1018
1018
1018
1017
1017
1016
1016
1015
1015
1014
1014

Ozone (du)

360
362
370
369
364
357
350
334
307
306
298
289
286
284
283
284
286
289
292
291
287
285
283
282

Saturday 20

New Moon 0%

09:06

15:39

07 Bad
08 Bad
09 Bad
10 Bad
11 Bad
12 Bad
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

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 - 06:43. Astro Dark: 17:59 - 06:02

Total Clouds (% Sky Obscured)

63
59
58
52
72
51
37
45
56
98
97
96
98
100
92
90
88
80
85
93
95
95
96
97

Low Clouds (% Sky Obscured)

63
59
58
52
72
51
37
45
56
62
75
82
86
82
65
75
68
60
54
51
58
67
79
81

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
35
93
91
76
76
75
61
54
15
55
69
26
30
27
33

High Clouds (% Sky Obscured)

0
0
0
0
0
2
2
2
13
53
75
83
92
100
84
56
51
35
34
44
49
53
63
75

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
3
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
None
None
None
None
None
None
None

Precipitation Probability (%)

0
0
0
0
0
0
0
1
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
7
8
8
9
11
11
10
10
9
9
9
9
9
9
9
8
7
7
7
7
7
8
8

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

94
94
94
91
88
84
81
82
85
86
86
86
85
88
88
93
94
94
94
96
96
98
96
98

Pressure (mb)

1014
1014
1014
1013
1013
1012
1011
1010
1010
1010
1010
1010
1009
1009
1009
1009
1009
1008
1008
1008
1008
1008
1008
1008

Ozone (du)

285
289
298
301
303
302
301
303
307
309
304
301
299
299
297
298
299
302
305
308
315
326
339
344

Sunday 21

Waxing Crescent 2%

09:47

16:46

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
04 Bad
05 Bad
06 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)

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

Low Clouds (% Sky Obscured)

81
87
84
82
80
82
86
90
93
97
100
95
95
96
92
93
100
100
80
71
70
77
76
87

Medium Clouds (% Sky Obscured)

49
63
79
82
90
56
87
83
77
20
52
41
39
48
37
35
18
25
33
35
84
63
69
65

High Clouds (% Sky Obscured)

87
100
78
58
40
55
70
86
68
43
29
47
49
51
49
49
52
42
30
24
25
33
34
30

ISS Passover

Visibility (miles)

6
0
0
0
0
0
0
0
0
0
0
0
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
7
16
30
41
23
22
19
15
5
2
3
3
2
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)

8
9
9
8
9
9
9
9
9
9
8
8
8
9
9
9
9
10
10
9
9
8
8
7

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

96
96
96
98
96
96
98
98
98
98
98
96
96
96
96
96
98
93
90
90
91
91
93
93

Pressure (mb)

1009
1009
1009
1009
1009
1009
1008
1008
1008
1008
1009
1009
1009
1009
1010
1010
1010
1010
1010
1010
1010
1011
1011
1011

Ozone (du)

353
357
361
361
361
363
366
371
375
382
387
389
392
391
390
388
388
388
389
390
391
392
393
392

Monday 22

Waxing Crescent 6%

10:17

18:01

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
04 Bad
05 Bad
06 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 - 06:44. Astro Dark: 18:00 - 06:03

Total Clouds (% Sky Obscured)

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

Low Clouds (% Sky Obscured)

94
100
98
95
92
82
83
78
82
82
82
83
86
90
92
94
96
96
96
96
97
94
91
93

Medium Clouds (% Sky Obscured)

67
72
68
67
58
31
34
43
41
46
40
23
12
10
28
46
64
44
26
9
24
39
49
44

High Clouds (% Sky Obscured)

20
15
16
17
16
41
62
81
65
50
29
94
90
87
91
93
94
84
74
64
77
87
97
88

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
2
14
4
2
8
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
6
6
6
7
6
7
7
7
7
7
7
10
10
12
12
12
12
12
12
11
12
11
11

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

93
93
93
91
90
85
82
87
90
91
91
90
93
93
94
94
93
93
94
94
94
94
96
96

Pressure (mb)

1011
1012
1012
1012
1012
1012
1012
1012
1012
1013
1013
1013
1013
1014
1014
1014
1014
1014
1015
1015
1015
1015
1015
1016

Ozone (du)

395
396
397
399
404
407
409
411
411
412
411
409
406
404
401
399
397
394
394
393
392
392
392
392

Tuesday 23

Waxing Crescent 12%

10:38

19:19

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 OK
03 Bad
04 Bad
05 Bad
06 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
97
94
90
87
83
79
79
80
81
74
67
60
61
61
64
52
43
31
48
67
84
76

Low Clouds (% Sky Obscured)

95
98
95
93
90
87
83
79
79
80
81
74
67
60
61
61
64
52
40
28
42
54
72
67

Medium Clouds (% Sky Obscured)

44
49
37
23
7
7
5
4
2
2
1
1
1
0
0
0
0
0
0
0
1
3
4
2

High Clouds (% Sky Obscured)

77
66
50
37
20
17
17
13
13
17
21
27
38
40
35
35
40
45
43
31
48
49
59
43

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
7
10
12
12
11
10
9
7
3
5
4
2
7
9
8
8
6
1
3
2
0
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

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

Pressure (mb)

1016
1017
1017
1017
1017
1017
1018
1018
1018
1018
1019
1019
1019
1019
1020
1020
1020
1020
1020
1020
1020
1020
1020
1020

Ozone (du)

392
393
393
393
392
391
388
386
383
379
376
372
372
371
370
370
370
370
369
367
366
365
364
362

Wednesday 24

Waxing Crescent 19%

10:54

20:37

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 - 06:45. Astro Dark: 18:01 - 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: 18/12/25 07:58:04. Forecast: 18/12/25 to 24/12/25. Timezone: UTC+0.00