Clear Outside v1.0 - International Weather Forecasts For Astronomers

Tuesday 16

Waning Crescent 7%

05:56

13:36

21 Bad
22 Bad
23 Bad
00 OK
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
15 Bad
16 Bad
17 Bad
18 Bad
19 Bad
20 Bad

Sun - Rise: 08:03, Set: 15:54, Transit: 11:59. Moon - Rise: 05:56, Set: 13:36. Civil Dark: 16:34 - 07:23. Nautical Dark: 17:17 - 06:40. Astro Dark: 17:58 - 05:59

Total Clouds (% Sky Obscured)

69
48
46
35
70
56
63
65
100
100
100
100
100
100
100
100
100
100
100
97
100
100
97
100

Low Clouds (% Sky Obscured)

14
22
29
35
43
56
63
65
51
32
26
35
21
0
24
20
61
66
88
92
100
100
95
100

Medium Clouds (% Sky Obscured)

2
0
0
0
0
0
0
1
6
22
6
61
100
100
100
100
99
75
98
97
93
72
96
95

High Clouds (% Sky Obscured)

1
1
8
6
33
25
7
14
52
61
100
100
100
100
100
100
100
100
100
55
59
55
55
37

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
52
100
100
97
98
85
40
4
2
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
1
7
18
21
20
28
37
38
26
40
37

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
4
4
4
3
3
3
4
4
4
5
5
5
6
9
11
13
13
14
14
15
17
18
19

Chance of Frost

Temperature (°C)

6
5
4
3
3
2
2
2
2
1
2
2
3
4
6
7
9
9
9
9
9
9
10
10

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

91
91
89
91
91
91
91
91
89
88
88
91
89
86
81
79
77
78
81
82
84
85
87
87

Pressure (mb)

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

Ozone (du)

337
337
332
327
325
321
318
312
308
305
305
304
304
302
301
301
299
298
301
299
297
299
299
300

Wednesday 17

Waning Crescent 3%

07:07

14:05

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
15 Bad
16 Bad
17 Bad
18 Bad
19 Bad
20 Bad

Sun - Rise: 08:04, Set: 15:54, Transit: 11:59. Moon - Rise: 07:07, Set: 14:05. Civil Dark: 16:35 - 07:24. Nautical Dark: 17:18 - 06:41. Astro Dark: 17:58 - 06:00

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)

100
92
100
100
100
70
56
32
39
49
47
69
82
100
100
98
92
88
90
99
94
72
64
70

Medium Clouds (% Sky Obscured)

83
95
100
99
97
31
59
97
48
92
100
100
100
100
100
100
100
100
100
100
98
100
94
96

High Clouds (% Sky Obscured)

19
37
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100

ISS Passover

Visibility (miles)

9
9
9
4
9
9
9
9
9
9
9
9
6
2
3
2
9
3
2
3
4
8
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
Light Rain
Light Rain
Light Rain
Very Light Rain
None
None
None
None
None
None
Light Rain
Light Rain
Moderate Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Very Light Rain
None
None

Precipitation Probability (%)

66
95
95
95
68
36
21
16
3
4
28
80
95
95
95
95
95
95
95
95
95
59
33
11

Precipitation Amount (mm)

0.2
0.5
0.6
0.7
0.3
0
0
0
0
0
0
0.6
1
2.8
2.1
1.5
1.1
2.3
2.4
1.7
0.6
0.2
0
0

Wind Speed/Direction (mph)

19
18
19
19
19
18
15
12
8
8
6
5
10
10
13
16
20
22
22
25
26
25
15
13

Chance of Frost

Temperature (°C)

10
10
11
11
11
12
12
11
11
10
10
10
10
10
10
11
11
11
11
11
11
12
12
11

Feels Like (°C)

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

Dew Point (°C)

8
9
9
10
10
10
10
10
10
9
9
9
10
10
10
9
9
9
9
9
9
10
10
9

Relative Humidity (%)

87
88
90
91
91
90
92
95
93
93
95
96
95
95
95
91
88
83
87
86
84
86
86
86

Pressure (mb)

1010
1009
1009
1009
1009
1009
1008
1009
1008
1009
1009
1009
1008
1007
1006
1004
1002
1001
1001
1000
1000
1000
1002
1003

Ozone (du)

299
301
302
307
307
309
309
308
305
303
302
297
288
281
286
293
294
291
289
289
289
293
307
325

Thursday 18

Waning Crescent 1%

08:11

14:46

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
12 OK
13 Bad
14 OK
15 OK
16 OK
17 OK
18 OK
19 OK
20 OK

Sun - Rise: 08:05, Set: 15:55, Transit: 12:00. Moon - Rise: 08:11, Set: 14:46. Civil Dark: 16:35 - 07:25. Nautical Dark: 17:18 - 06:41. Astro Dark: 17:59 - 06:01

Total Clouds (% Sky Obscured)

100
99
100
100
100
95
95
90
90
85
75
76
75
52
20
29
44
42
33
32
9
9
9
9

Low Clouds (% Sky Obscured)

63
67
64
25
0
11
7
0
0
0
0
0
0
0
20
29
44
42
33
32
8
9
9
8

Medium Clouds (% Sky Obscured)

63
57
45
40
35
30
25
30
30
25
25
25
0
0
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

100
89
39
73
100
62
60
65
75
60
70
75
75
52
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 (%)

20
9
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)

15
17
15
11
12
11
11
11
11
11
11
11
11
11
11
11
12
11
10
8
6
6
6
6

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

84
78
78
82
82
81
81
81
79
81
82
83
85
84
82
82
81
80
81
85
91
91
91
91

Pressure (mb)

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

Ozone (du)

338
346
354
357
357
351
351
355
353
370
376
372
369
360
344
323
311
305
311
309
306
301
298
295

Friday 19

Waning Crescent 0%

09:05

15:41

21 OK
22 OK
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
15 Bad
16 Bad
17 Bad
18 Bad
19 Bad
20 Bad

Sun - Rise: 08:05, Set: 15:55, Transit: 12:00. Moon - Rise: 09:05, Set: 15:41. Civil Dark: 16:35 - 07:25. Nautical Dark: 17:19 - 06:42. Astro Dark: 17:59 - 06:01

Total Clouds (% Sky Obscured)

17
28
38
44
44
57
54
54
61
59
57
55
52
51
61
64
60
54
71
85
97
100
95
94

Low Clouds (% Sky Obscured)

16
26
36
44
44
55
54
54
61
59
57
54
52
51
53
52
47
44
45
45
45
54
64
66

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
54
53
51
13
23
31
44

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
7
30
35
40
60
47
86
81
53
30

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
1
3
3
2
1
1
2
3
3
0
1
2
0
0
0
0
0
0
0
6
12
20

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
4
5
5
6
6
6
7
8
8
8
9
10
12
12
11
11
10
10
10
10
11

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

93
93
93
93
93
93
91
91
93
93
91
91
91
88
84
80
78
78
78
79
84
86
85
85

Pressure (mb)

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

Ozone (du)

294
292
292
292
291
289
292
293
294
293
294
298
302
304
307
312
315
314
315
319
317
317
315
319

Saturday 20

New Moon 2%

09:46

16:48

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
15 Bad
16 Bad
17 Bad
18 Bad
19 Bad
20 Bad

Sun - Rise: 08:06, Set: 15:56, Transit: 12:01. Moon - Rise: 09:46, Set: 16:48. Civil Dark: 16:36 - 07:26. Nautical Dark: 17:19 - 06:42. Astro Dark: 18:00 - 06:02

Total Clouds (% Sky Obscured)

99
99
99
99
98
98
98
99
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

78
87
89
92
91
89
84
80
75
79
86
91
91
90
89
93
96
100
95
90
85
76
66
57

Medium Clouds (% Sky Obscured)

67
70
62
77
96
92
96
98
87
98
97
94
91
92
96
96
95
92
89
88
86
90
95
99

High Clouds (% Sky Obscured)

25
23
21
34
52
71
77
82
87
91
96
100
100
100
100
100
100
100
100
100
100
100
100
100

ISS Passover

Visibility (miles)

9
9
9
9
9
7
5
4
8
9
9
9
9
9
9
8
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
Very Light Rain
Light Rain
Very Light Rain
None
None
None
None
Very Light Rain
None
None
Very Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Very Light Rain
None

Precipitation Probability (%)

31
38
44
50
61
74
65
47
33
39
46
51
49
49
52
83
89
95
90
89
89
71
53
19

Precipitation Amount (mm)

0
0
0
0
0.2
0.4
0.3
0
0
0
0
0.2
0
0
0.2
0.5
0.7
0.9
0.7
0.7
0.6
0.4
0.2
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

85
84
85
85
85
87
90
93
91
93
91
91
91
90
87
85
84
85
87
87
90
91
91
90

Pressure (mb)

1004
1003
1003
1002
1002
1002
1001
1001
1001
1001
1002
1002
1003
1003
1003
1003
1003
1003
1003
1003
1004
1004
1004
1005

Ozone (du)

320
324
323
323
320
322
323
328
329
327
328
337
350
356
368
374
376
378
379
382
384
386
386
386

Sunday 21

Waxing Crescent 6%

10:15

18:02

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
15 Bad
16 Bad
17 Bad
18 Bad
19 Bad
20 Bad

Sun - Rise: 08:06, Set: 15:56, Transit: 12:01. Moon - Rise: 10:15, Set: 18:02. Civil Dark: 16:36 - 07:26. Nautical Dark: 17:20 - 06:43. Astro Dark: 18:00 - 06:02

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
98
97
93
93
91
90
84
76
71
85
92
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

63
69
75
75
75
74
78
80
82
79
76
72
64
58
58
71
85
100
97
94
91
90
89
89

Medium Clouds (% Sky Obscured)

99
99
99
99
100
100
88
76
60
38
20
0
0
0
0
5
45
50
57
57
45
30
17
14

High Clouds (% Sky Obscured)

100
100
100
100
100
100
68
36
4
35
68
90
80
68
52
68
84
100
100
100
100
99
98
97

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

Precipitation Probability (%)

23
24
23
43
57
69
73
73
69
57
43
21
18
13
1
27
33
33
59
69
77
64
47
7

Precipitation Amount (mm)

0
0
0
0
0.2
0.3
0.4
0.4
0.4
0.3
0
0
0
0
0
0
0
0
0.2
0.3
0.4
0.3
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

90
93
93
94
93
93
91
91
90
90
88
87
85
84
81
81
82
85
88
88
90
91
93
93

Pressure (mb)

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

Ozone (du)

386
387
389
391
395
400
404
407
410
412
412
413
413
410
408
405
404
402
401
400
399
398
398
398

Monday 22

Waxing Crescent 12%

10:37

19:20

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
15 Bad
16 Bad
17 Bad

Sun - Rise: 08:07, Set: 15:57, Transit: 12:02. Moon - Rise: 10:37, Set: 19:20. Civil Dark: 16:37 - 07:26. Nautical Dark: 17:20 - 06:43. Astro Dark: 18:01 - 06:03

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

Low Clouds (% Sky Obscured)

87
86
85
80
75
71
53
34
33
50
66
76
79
82
85
75
65
53
61
68
76

Medium Clouds (% Sky Obscured)

45
71
100
100
100
100
99
97
96
86
75
64
43
22
2
6
15
24
24
43
42

High Clouds (% Sky Obscured)

98
99
100
100
100
100
74
54
51
63
65
66
73
80
87
90
95
98
98
98
98

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

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
None
None
None
None
None
None
None
None

Precipitation Probability (%)

10
10
8
13
16
19
23
23
19
18
15
9
13
14
13
13
13
12
16
19
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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

91
91
91
91
88
87
87
84
82
82
81
79
79
78
79
79
81
82
84
82
84

Pressure (mb)

1007
1008
1008
1008
1008
1008
1009
1009
1009
1009
1010
1010
1011
1011
1011
1011
1012
1012
1012
1013
1013

Ozone (du)

398
398
397
397
396
396
395
398
400
402
403
403
404
404
403
402
402
402
403
404
405

Forecast for Bray Court, Windsor and Maidenhead, United Kingdom (51.50,-0.70)

Generated: 16/12/25 21:24:41. Forecast: 16/12/25 to 22/12/25. Timezone: UTC+0.00