Clear Outside v1.0 - International Weather Forecasts For Astronomers

Friday 28

First Quarter 55%

13:00

00:09

03 Bad
04 Bad
05 Bad
06 Bad
07 Bad
08 Bad
09 OK
10 OK
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

Sun - Rise: 07:42, Set: 15:59, Transit: 11:51. Moon - Rise: 13:00, Set: 00:09. Civil Dark: 16:37 - 07:04. Nautical Dark: 17:19 - 06:22. Astro Dark: 17:59 - 05:42

Total Clouds (% Sky Obscured)

62
71
77
100
100
100
38
41
47
58
46
49
73
67
73
61
91
61
100
100
100
100
100
98

Low Clouds (% Sky Obscured)

45
44
26
34
35
33
38
41
47
58
46
49
62
63
71
52
50
0
21
49
68
86
85
86

Medium Clouds (% Sky Obscured)

62
71
77
100
100
47
0
0
0
0
0
0
14
5
3
61
91
61
100
100
100
94
97
90

High Clouds (% Sky Obscured)

62
71
77
99
100
100
20
0
0
0
14
16
61
61
69
61
57
61
100
100
86
57
66
60

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
0
1
6
16
11
0
10
0
0
0
3
9
32
48

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
7
9
10
10
10
11
13
15
18
17
16
16
14
12
10
9
10
9
8
10
10
12

Chance of Frost

Temperature (°C)

8
8
8
8
8
8
8
9
10
11
12
12
11
11
11
10
9
9
8
8
8
8
8
9

Feels Like (°C)

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

Dew Point (°C)

7
7
7
7
7
7
7
6
7
7
6
6
7
7
7
7
7
7
6
6
6
7
6
7

Relative Humidity (%)

91
93
93
91
93
93
90
82
77
75
67
67
76
78
80
83
87
90
85
87
90
91
87
85

Pressure (mb)

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

Ozone (du)

265
266
264
266
267
265
267
267
270
270
272
273
274
275
276
279
281
283
283
285
288
289
291
291

Saturday 29

Waxing Gibbous 66%

13:12

01:30

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
21 Bad
22 Bad
23 Bad
00 Bad
01 Bad
02 Bad

Sun - Rise: 07:44, Set: 15:58, Transit: 11:51. Moon - Rise: 13:12, Set: 01:30. Civil Dark: 16:37 - 07:05. Nautical Dark: 17:19 - 06:23. Astro Dark: 17:59 - 05:43

Total Clouds (% Sky Obscured)

98
98
98
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
97
91
96
91
92

Low Clouds (% Sky Obscured)

86
90
98
100
100
100
100
100
100
100
100
89
83
88
95
98
98
100
96
87
83
89
84
92

Medium Clouds (% Sky Obscured)

97
92
91
99
100
100
100
100
100
100
100
100
100
97
44
62
30
24
95
97
91
94
72
49

High Clouds (% Sky Obscured)

57
24
60
3
100
100
100
100
100
100
100
100
100
100
100
83
56
60
0
0
0
0
0
0

ISS Passover

Visibility (miles)

9
9
9
9
9
6
2
1
2
4
5
9
9
9
9
9
9
9
5
0
0
0
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
Very Light Rain
Light Rain
Light Rain
Light Rain
Moderate Rain
Moderate Rain
Moderate Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
None
None
None
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
None
None

Precipitation Probability (%)

56
67
80
95
95
95
95
95
95
95
95
95
95
91
40
25
47
80
95
95
95
82
41
41

Precipitation Amount (mm)

0
0
0.3
0.8
1
1.7
2.9
3.5
3.2
1.7
1.4
1.2
0.8
0.7
0
0
0
0.5
0.7
1.7
1.9
0.4
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

9
10
10
10
10
10
10
10
10
10
10
10
10
9
9
8
7
7
6
5
4
5
5
5

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

87
84
85
87
88
88
91
95
96
93
91
91
90
90
90
87
87
85
91
94
94
96
88
89

Pressure (mb)

1006
1005
1004
1003
1003
1002
1002
1002
1001
1000
1000
999
999
999
999
1000
1001
1002
1002
1003
1004
1005
1006
1006

Ozone (du)

291
291
294
295
298
301
300
302
306
309
314
322
328
328
328
333
339
342
345
349
344
341
345
343

Sunday 30

Waxing Gibbous 77%

13:24

02:55

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

Sun - Rise: 07:45, Set: 15:57, Transit: 11:51. Moon - Rise: 13:24, Set: 02:55. Civil Dark: 16:36 - 07:06. Nautical Dark: 17:18 - 06:24. Astro Dark: 17:58 - 05:44

Total Clouds (% Sky Obscured)

96
98
36
48
38
44
42
50
57
56
49
35
2
2
4
11
70
81
82
88
100
100
100
100

Low Clouds (% Sky Obscured)

96
50
36
46
34
41
39
45
53
52
49
32
0
0
0
0
0
0
0
19
23
44
64
87

Medium Clouds (% Sky Obscured)

70
82
2
3
3
3
2
0
0
0
0
0
0
0
0
2
21
81
82
88
100
85
40
100

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
1
4
4
18
25
19
15
91
94
97
100

ISS Passover

Visibility (miles)

9
9
9
8
0
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 (%)

50
33
11
17
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
6
12
19

Precipitation Amount (mm)

0.2
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
13
12
11
11
10
10
10
10
10
7
6
4
5
4
4
5
5
5
5
7
7

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

83
85
83
86
96
93
88
85
83
82
80
82
85
88
86
88
89
91
91
93
91
89
89
89

Pressure (mb)

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

Ozone (du)

341
341
341
341
344
344
345
343
340
337
333
327
322
319
316
311
307
307
304
300
296
292
290
288

Monday 1

Waxing Gibbous 86%

13:38

02:55

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
21 Bad
22 Bad
23 Bad
00 Bad
01 Bad
02 Bad

Sun - Rise: 07:47, Set: 15:57, Transit: 11:52. Moon - Rise: 13:38, Set: 02:55. Civil Dark: 16:36 - 07:08. Nautical Dark: 17:18 - 06:25. Astro Dark: 17:58 - 05:45

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
92
84
75
71
66
61
53
46
44

Low Clouds (% Sky Obscured)

88
87
87
87
89
91
90
90
90
90
89
90
79
71
63
66
69
69
65
63
61
53
45
44

Medium Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
89
74
62
45
39
45
31
0
0

High Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
77
57
40
40
30
30
12
0
0

ISS Passover

Visibility (miles)

9
9
9
9
9
8
5
3
3
7
7
9
9
9
9
9
9
9
9
7
7
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
Very Light Rain
Very Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Very Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Very Light Rain
Very Light Rain
None
None
None
None
None

Precipitation Probability (%)

38
62
69
91
95
95
95
95
95
92
63
74
95
95
95
95
95
68
63
51
38
36
14
4

Precipitation Amount (mm)

0
0.3
0.3
0.5
1.1
0.9
1.3
1.7
0.7
0.5
0.2
0.5
0.8
1.2
2.2
1.7
1.2
0.2
0.3
0
0
0
0
0

Wind Speed/Direction (mph)

8
13
16
18
19
20
20
21
22
21
21
21
20
19
19
20
20
19
20
19
20
18
16
18

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

91
82
82
84
88
90
91
91
91
90
90
90
92
92
92
92
90
90
87
88
87
85
78
78

Pressure (mb)

1010
1008
1007
1006
1005
1004
1003
1002
1001
1000
999
998
997
997
996
996
996
996
995
995
995
995
995
995

Ozone (du)

284
281
278
275
272
270
268
266
265
264
262
263
263
264
266
264
264
265
267
267
267
269
277
281

Tuesday 2

Waxing Gibbous 94%

13:55

04:25

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
21 Bad
22 Bad
23 Bad
00 Bad
01 Bad
02 Bad

Sun - Rise: 07:48, Set: 15:56, Transit: 11:52. Moon - Rise: 13:55, Set: 04:25. Civil Dark: 16:35 - 07:09. Nautical Dark: 17:17 - 06:26. Astro Dark: 17:58 - 05:46

Total Clouds (% Sky Obscured)

38
69
80
86
79
99
94
99
97
83
66
50
65
77
92
57
59
69
78
89
96
99
97
96

Low Clouds (% Sky Obscured)

31
60
67
61
47
45
53
59
65
57
51
42
47
51
56
57
59
63
68
73
79
77
74
73

Medium Clouds (% Sky Obscured)

7
18
29
40
52
96
76
92
78
82
64
37
52
51
66
30
20
16
19
23
31
38
44
49

High Clouds (% Sky Obscured)

0
0
0
30
60
94
80
80
80
53
27
0
1
3
4
0
0
0
20
43
68
68
67
66

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
8

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

Precipitation Probability (%)

11
5
9
4
8
12
49
73
90
77
52
33
12
4
1
44
36
4
7
6
1
3
7
14

Precipitation Amount (mm)

0
0
0
0
0
0
0
0.4
0.7
0.6
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

19
18
19
15
13
11
12
11
12
12
11
11
10
8
7
6
6
5
4
4
3
3
3
4

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

81
87
81
79
78
82
84
82
80
78
77
77
80
85
90
91
90
90
88
85
83
80
82
80

Pressure (mb)

995
995
996
998
999
1001
1001
1002
1002
1002
1002
1003
1003
1004
1004
1005
1005
1005
1006
1006
1007
1007
1007
1008

Ozone (du)

288
295
300
305
307
309
307
306
305
305
305
307
309
311
315
314
312
311
309
309
310
310
313
315

Wednesday 3

Waxing Gibbous 98%

14:19

06:00

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

Sun - Rise: 07:49, Set: 15:56, Transit: 11:52. Moon - Rise: 14:19, Set: 06:00. Civil Dark: 16:35 - 07:10. Nautical Dark: 17:17 - 06:28. Astro Dark: 17:57 - 05:47

Total Clouds (% Sky Obscured)

88
81
74
76
77
79
81
85
84
63
46
29
50
70
91
77
63
53
57
66
77
85
93
100

Low Clouds (% Sky Obscured)

74
75
74
76
76
75
69
63
58
47
39
26
25
22
18
26
34
41
53
64
76
74
73
71

Medium Clouds (% Sky Obscured)

61
73
74
76
77
70
51
29
6
4
3
0
18
36
22
20
25
34
50
66
77
85
86
93

High Clouds (% Sky Obscured)

47
23
0
3
6
10
6
3
0
0
0
0
0
2
10
31
40
50
45
35
30
51
77
100

ISS Passover

Visibility (miles)

7
8
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 (%)

28
36
35
36
27
3
9
10
4
21
23
11
7
2
0
1
1
2
5
8
10
12
11
6

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
3
3
3
3
3
4
4
5
6
6
5
5
4
4
4
4
4
5
6
7
9
10
9

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

82
85
88
88
89
89
89
85
82
78
81
82
84
85
88
89
88
88
85
85
85
85
84
84

Pressure (mb)

1008
1008
1009
1009
1009
1010
1010
1010
1010
1010
1010
1010
1010
1010
1010
1010
1010
1010
1009
1008
1007
1006
1005
1004

Ozone (du)

318
320
322
324
323
323
322
319
316
313
312
312
311
309
307
305
304
304
303
303
303
303
302
301

Thursday 4

Full Moon 100%

14:54

07:35

Sun - Rise: 07:51, Set: 15:55, Transit: 11:53. Moon - Rise: 14:54, Set: 07:35. Civil Dark: 16:34 - 07:11. Nautical Dark: 17:17 - 06:29. Astro Dark: 17:57 - 05:48

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

Generated: 28/11/25 03:14:00. Forecast: 28/11/25 to 04/12/25. Timezone: UTC+0.00