Clear Outside v1.0 - International Weather Forecasts For Astronomers

Wednesday 17

Waning Crescent 3%

07:12

14:09

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
12 Bad
13 Bad
14 Bad

Sun - Rise: 08:09, Set: 15:58, Transit: 12:03. Moon - Rise: 07:12, Set: 14:09. Civil Dark: 16:38 - 07:28. Nautical Dark: 17:21 - 06:45. Astro Dark: 18:02 - 06:04

Total Clouds (% Sky Obscured)

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

Low Clouds (% Sky Obscured)

83
100
100
100
100
100
86
93
100
100
96
95
67
46
59
65
62
79
90
100
100
100
88
77

Medium Clouds (% Sky Obscured)

95
82
59
56
63
68
100
100
83
97
100
100
100
97
100
100
100
100
100
100
100
100
100
100

High Clouds (% Sky Obscured)

59
69
3
4
27
62
65
72
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
5
7
9
0
1
9
9
9
9
9
2
1
0
0
2
2
4

Fog (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
15
0
0
0
0

Precipitation Type

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

Precipitation Probability (%)

13
7
4
12
15
57
95
95
95
40
48
28
19
3
2
4
13
84
95
95
95
95
95
95

Precipitation Amount (mm)

0
0
0
0
0
0
0.7
2.1
0.7
0
0.3
0
0
0
0
0
0
0.4
1.8
3.5
2.4
2.6
1.9
1.1

Wind Speed/Direction (mph)

15
18
19
22
23
24
24
23
24
23
22
17
15
12
9
8
8
8
9
10
11
9
10
12

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

90
90
91
91
93
91
93
93
93
95
96
98
91
93
95
95
96
96
98
98
98
95
93
93

Pressure (mb)

1011
1010
1009
1009
1008
1008
1007
1006
1006
1005
1005
1005
1006
1006
1006
1006
1006
1006
1006
1005
1003
1002
1000
999

Ozone (du)

299
296
295
294
291
295
297
304
307
308
312
311
308
308
304
301
297
294
295
292
294
293
291
286

Thursday 18

Waning Crescent 1%

08:16

14:50

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 Bad
05 Bad
06 Bad
07 Bad
08 Bad
09 OK
10 OK
11 Bad
12 Bad
13 Bad
14 Bad

Sun - Rise: 08:09, Set: 15:58, Transit: 12:04. Moon - Rise: 08:16, Set: 14:50. Civil Dark: 16:39 - 07:29. Nautical Dark: 17:22 - 06:46. Astro Dark: 18:03 - 06:05

Total Clouds (% Sky Obscured)

100
100
100
100
100
82
100
100
100
100
100
100
35
100
100
100
100
100
6
29
52
56
51
51

Low Clouds (% Sky Obscured)

84
67
69
70
67
71
75
43
39
22
0
0
0
0
0
0
0
0
6
29
52
56
51
51

Medium Clouds (% Sky Obscured)

98
97
85
63
67
61
62
96
12
39
36
1
0
0
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

100
100
100
100
100
62
100
100
98
100
100
100
35
66
45
45
60
85
0
0
0
0
0
0

ISS Passover

Visibility (miles)

4
9
9
9
9
6
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

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

Precipitation Probability (%)

59
10
2
4
31
46
19
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

11
13
13
15
17
18
18
16
13
11
10
10
10
10
11
11
12
12
12
12
14
14
14
13

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

95
88
91
91
91
90
88
90
90
88
88
88
86
85
85
85
86
86
88
87
85
84
85
85

Pressure (mb)

1000
1001
1001
1002
1003
1003
1004
1006
1007
1009
1010
1010
1011
1011
1012
1013
1013
1014
1015
1016
1016
1016
1016
1016

Ozone (du)

285
287
296
315
320
331
345
351
352
350
350
347
352
359
372
373
377
374
369
362
352
342
323
314

Friday 19

Waning Crescent 0%

09:10

No Set

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

Sun - Rise: 08:10, Set: 15:59, Transit: 12:04. Moon - Rise: 09:10, Set: No Set. Civil Dark: 16:39 - 07:30. Nautical Dark: 17:22 - 06:46. Astro Dark: 18:03 - 06:05

Total Clouds (% Sky Obscured)

53
67
69
53
48
42
29
24
31
42
49
31
37
41
33
37
46
46
63
58
50
46
42
39

Low Clouds (% Sky Obscured)

53
67
69
53
48
42
29
24
31
42
48
31
37
41
33
37
46
46
51
50
48
41
38
37

Medium Clouds (% Sky Obscured)

0
0
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)

0
0
0
0
0
0
0
0
0
0
0
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
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
1
0
1
4
13
6
0
0
0
0
0
0
0
0
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

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

Pressure (mb)

1017
1017
1017
1018
1018
1018
1018
1018
1017
1017
1016
1016
1015
1015
1014
1014
1013
1013
1013
1012
1012
1011
1010
1010

Ozone (du)

302
299
296
294
290
288
289
290
291
293
294
295
298
299
299
298
299
299
300
303
307
306
305
304

Saturday 20

New Moon 2%

09:50

15:45

15 OK
16 Bad
17 OK
18 OK
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

Sun - Rise: 08:10, Set: 15:59, Transit: 12:05. Moon - Rise: 09:50, Set: 15:45. Civil Dark: 16:39 - 07:30. Nautical Dark: 17:23 - 06:47. Astro Dark: 18:03 - 06:06

Total Clouds (% Sky Obscured)

34
64
36
32
68
90
93
97
100
100
100
100
100
100
100
100
99
98
97
95
94
94
94
94

Low Clouds (% Sky Obscured)

33
31
28
32
40
44
50
54
58
51
42
32
42
54
84
82
90
93
92
91
90
88
87
87

Medium Clouds (% Sky Obscured)

0
0
0
0
0
52
63
74
97
69
57
32
44
38
49
49
46
45
41
48
31
68
64
56

High Clouds (% Sky Obscured)

1
10
6
20
46
70
80
90
100
100
100
100
100
100
100
90
81
73
58
38
15
10
10
5

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
6
0
0
9
9
9
9
0
1

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
1
0
1
1
0
0
0
0
0
0
0
3
6
9
13
13
15
20
20
11

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

85
88
88
86
88
89
91
91
91
93
93
94
94
96
96
98
98
98
96
94
96
96
98
96

Pressure (mb)

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

Ozone (du)

307
310
312
311
310
310
309
312
311
310
308
309
312
313
316
322
328
333
339
344
347
348
355
360

Sunday 21

Waxing Crescent 6%

10:20

16:52

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
12 Bad
13 Bad
14 Bad

Sun - Rise: 08:11, Set: 16:00, Transit: 12:05. Moon - Rise: 10:20, Set: 16:52. Civil Dark: 16:40 - 07:31. Nautical Dark: 17:23 - 06:47. Astro Dark: 18:04 - 06:06

Total Clouds (% Sky Obscured)

93
92
92
94
97
100
99
97
96
97
99
100
100
100
100
100
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

85
83
80
86
93
96
89
86
78
86
93
100
100
100
100
100
100
100
100
100
100
100
100
99

Medium Clouds (% Sky Obscured)

48
78
70
58
84
100
96
92
80
82
78
44
71
71
68
99
99
98
77
56
36
56
73
90

High Clouds (% Sky Obscured)

8
19
21
47
74
100
77
50
30
56
78
99
99
100
100
100
100
100
78
55
33
46
59
73

ISS Passover

Visibility (miles)

1
9
9
9
9
9
9
9
9
9
9
9
9
8
9
3
3
2
2
2
1
1
4
7

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

Precipitation Probability (%)

6
13
6
11
16
12
23
24
21
15
13
24
34
54
83
95
95
95
95
81
36
35
28
3

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.4
0.7
0.8
0.9
0.7
0.4
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

96
94
94
94
94
93
91
93
94
94
96
96
94
96
98
98
98
96
98
96
94
94
93
90

Pressure (mb)

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

Ozone (du)

367
373
373
376
381
385
389
391
393
396
397
399
400
405
410
413
416
420
423
422
421
421
421
421

Monday 22

Waxing Crescent 12%

10:42

18:06

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
12 Bad
13 Bad
14 Bad

Sun - Rise: 08:11, Set: 16:00, Transit: 12:06. Moon - Rise: 10:42, Set: 18:06. Civil Dark: 16:40 - 07:31. Nautical Dark: 17:24 - 06:48. Astro Dark: 18:04 - 06:07

Total Clouds (% Sky Obscured)

100
100
100
98
96
94
85
77
71
71
75
75
79
81
82
90
95
98
98
99
100
100
100
100

Low Clouds (% Sky Obscured)

98
100
96
94
87
80
61
51
42
34
34
33
37
41
42
43
47
53
61
63
62
42
21
0

Medium Clouds (% Sky Obscured)

81
72
64
68
79
85
85
77
71
71
72
57
49
26
4
3
3
2
30
58
86
72
63
54

High Clouds (% Sky Obscured)

59
61
50
35
20
10
10
5
0
0
0
0
0
0
10
53
72
88
93
96
100
100
100
100

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 (%)

3
2
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)

4
4
4
4
4
4
5
5
5
5
4
4
4
4
4
4
4
4
4
4
4
4
4
4

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

88
90
91
94
94
94
94
94
94
96
94
96
94
96
96
96
98
98
98
94
91
90
91
91

Pressure (mb)

1007
1008
1008
1009
1009
1009
1010
1010
1010
1010
1010
1010
1011
1011
1011
1011
1011
1012
1012
1012
1012
1012
1012
1012

Ozone (du)

421
420
419
418
418
418
417
417
416
416
416
417
418
417
415
414
413
412
410
411
412
413
415
417

Tuesday 23

Waxing Crescent 12%

10:58

19:24

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: 08:12, Set: 16:01, Transit: 12:06. Moon - Rise: 10:58, Set: 19:24. Civil Dark: 16:41 - 07:31. Nautical Dark: 17:24 - 06:48. Astro Dark: 18:05 - 06:07

Total Clouds (% Sky Obscured)

94
88
80
81
82
82
76
69
65
64
75
92
94
97
99
99
98
95
96
97
98

Low Clouds (% Sky Obscured)

0
0
0
23
44
66
70
69
65
64
75
81
78
80
85
88
93
89
88
89
93

Medium Clouds (% Sky Obscured)

44
35
22
22
22
27
26
16
5
10
16
22
31
40
51
53
56
59
59
56
52

High Clouds (% Sky Obscured)

83
66
52
63
72
81
57
32
8
16
22
28
44
61
76
52
31
12
15
16
16

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
6
3
1
1
2

Fog (%)

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

Precipitation Probability (%)

0
0
0
0
0
0
1
2
1
7
8
5
44
54
51
66
76
86
72
57
42

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0.3
0.2
0.4
0.5
0.7
0.4
0.2
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

2
1
2
1
-1
-1
-1
-1
-1
-1
-1
-2
-2
-1
-2
-2
-1
-1
-1
-1
-1

Dew Point (°C)

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

Relative Humidity (%)

91
91
93
93
93
94
94
93
94
94
94
93
93
94
96
96
98
98
98
98
96

Pressure (mb)

1012
1012
1012
1012
1013
1013
1013
1013
1013
1014
1014
1014
1014
1014
1014
1015
1015
1016
1016
1016
1017

Ozone (du)

419
421
423
425
426
426
426
424
423
421
420
419
418
418
418
419
418
417
417
417
417

Forecast for Stratton Saint Margaret, Swindon, United Kingdom (51.57,-1.76)

Generated: 17/12/25 15:15:29. Forecast: 17/12/25 to 23/12/25. Timezone: UTC+0.00