Clear Outside v1.0 - International Weather Forecasts For Astronomers

Thursday 27

Waxing Crescent 55%

12:59

22:45

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 OK
11 OK
12 OK
13 Bad
14 Bad
15 Bad
16 Bad
17 OK
18 Good

Sun - Rise: 07:43, Set: 15:53, Transit: 11:48. Moon - Rise: 12:59, Set: 22:45. Civil Dark: 16:32 - 07:04. Nautical Dark: 17:15 - 06:21. Astro Dark: 17:56 - 05:40

Total Clouds (% Sky Obscured)

86
90
93
100
80
87
100
100
100
100
100
100
100
100
100
35
21
39
75
97
100
32
38
0

Low Clouds (% Sky Obscured)

79
90
90
90
63
61
42
9
7
29
29
11
28
33
30
35
21
30
53
87
92
32
38
0

Medium Clouds (% Sky Obscured)

34
60
17
3
0
12
55
89
92
100
100
100
100
100
1
0
0
6
33
61
70
0
0
0

High Clouds (% Sky Obscured)

30
5
64
76
61
62
100
100
92
100
86
100
100
100
100
2
0
0
3
3
3
32
3
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
6
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
Light Rain
None
None
None

Precipitation Probability (%)

0
0
6
5
1
0
0
0
0
0
0
0
0
0
0
0
0
0
9
56
95
41
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
0.9
0
0
0

Wind Speed/Direction (mph)

15
15
15
16
15
14
14
13
12
11
11
11
12
13
13
15
17
18
19
20
19
20
19
17

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

92
89
89
83
81
84
85
87
88
88
90
90
90
88
85
80
76
72
67
72
73
84
74
75

Pressure (mb)

1011
1011
1011
1011
1011
1012
1012
1012
1012
1011
1011
1011
1011
1011
1011
1011
1010
1009
1008
1007
1006
1007
1008
1008

Ozone (du)

253
254
254
257
258
259
260
262
265
264
264
266
266
266
268
271
274
275
277
279
282
284
286
288

Friday 28

First Quarter 52%

13:10

00:05

19 Good
20 Good
21 OK
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

Sun - Rise: 07:44, Set: 15:52, Transit: 11:48. Moon - Rise: 13:10, Set: 00:05. Civil Dark: 16:32 - 07:05. Nautical Dark: 17:15 - 06:22. Astro Dark: 17:55 - 05:41

Total Clouds (% Sky Obscured)

0
0
29
91
91
90
91
100
100
90
100
100
99
99
96
95
96
96
98
97
97
98
100
100

Low Clouds (% Sky Obscured)

0
0
8
0
0
7
0
0
84
77
75
88
78
83
83
85
77
85
93
85
92
86
89
87

Medium Clouds (% Sky Obscured)

0
0
0
4
48
61
63
92
95
89
90
100
97
97
92
89
91
93
93
93
93
95
92
93

High Clouds (% Sky Obscured)

0
0
14
42
42
45
57
55
48
18
93
41
41
32
55
40
31
40
56
53
38
52
100
100

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
8
3
3
1
1
1
1
2
2
2
4
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
Light Rain
Light Rain
Moderate Rain
Moderate Rain
Moderate Rain
Moderate Rain
Moderate Rain
Moderate Rain
Light Rain
Light Rain
Very Light Rain
None
Very Light Rain
None
None

Precipitation Probability (%)

0
0
0
0
0
0
0
2
48
95
95
95
95
95
95
95
95
95
95
88
56
58
54
53

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0.9
1.7
2.8
3.4
2.9
2.9
3.7
2.5
2.4
1.2
0.3
0
0.2
0
0

Wind Speed/Direction (mph)

17
16
16
15
14
13
12
11
9
7
6
6
9
12
14
14
13
12
11
11
13
14
13
11

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

4
3
3
2
2
3
3
3
4
4
5
6
6
6
7
8
9
9
9
9
9
8
8
8

Relative Humidity (%)

77
77
75
76
76
81
83
85
85
88
93
98
98
96
96
96
96
96
98
96
95
93
95
96

Pressure (mb)

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

Ozone (du)

291
293
292
292
295
296
297
297
297
299
301
305
306
308
311
314
317
321
323
326
332
333
334
340

Saturday 29

Waxing Gibbous 66%

13:21

01:28

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
15 OK
16 OK
17 OK
18 OK

Sun - Rise: 07:46, Set: 15:51, Transit: 11:49. Moon - Rise: 13:21, Set: 01:28. Civil Dark: 16:31 - 07:06. Nautical Dark: 17:14 - 06:23. Astro Dark: 17:55 - 05:42

Total Clouds (% Sky Obscured)

100
99
79
100
100
100
100
100
100
100
100
98
79
64
58
57
59
64
56
47
36
28
20
14

Low Clouds (% Sky Obscured)

94
51
51
56
63
61
69
67
100
100
100
90
79
64
58
57
59
63
54
40
31
25
19
13

Medium Clouds (% Sky Obscured)

91
83
66
100
100
100
100
100
67
89
84
89
51
21
18
21
14
11
13
7
5
2
0
0

High Clouds (% Sky Obscured)

100
95
50
88
100
100
50
50
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

ISS Passover

Visibility (miles)

8
4
8
8
9
9
9
9
9
6
4
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

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

Precipitation Probability (%)

76
79
68
45
13
5
4
8
47
80
60
22
24
22
21
20
18
9
8
3
2
0
0
0

Precipitation Amount (mm)

0.6
0.6
0.4
0
0
0
0
0
0
0.7
0.3
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

12
14
15
14
14
15
15
15
14
14
15
16
16
16
17
18
19
18
17
15
14
11
9
9

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

95
90
88
88
86
83
85
88
91
91
90
75
73
80
82
79
76
75
74
75
76
82
86
89

Pressure (mb)

1000
1000
1001
1001
1001
1002
1002
1002
1002
1003
1003
1004
1005
1006
1007
1008
1008
1009
1010
1011
1011
1012
1013
1013

Ozone (du)

343
343
338
336
335
339
341
344
345
343
345
347
349
348
349
352
353
349
342
338
334
331
328
323

Sunday 30

Waxing Gibbous 77%

13:34

02:53

19 Good
20 Good
21 Good
22 OK
23 OK
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

Sun - Rise: 07:47, Set: 15:51, Transit: 11:49. Moon - Rise: 13:34, Set: 02:53. Civil Dark: 16:31 - 07:07. Nautical Dark: 17:14 - 06:24. Astro Dark: 17:54 - 05:44

Total Clouds (% Sky Obscured)

8
3
8
14
21
35
47
95
70
99
100
100
100
100
100
100
100
100
100
100
100
100
100
93

Low Clouds (% Sky Obscured)

7
1
0
0
0
0
0
0
26
54
85
85
85
85
84
85
86
88
90
92
93
95
98
91

Medium Clouds (% Sky Obscured)

0
0
6
12
17
28
39
51
44
43
79
93
96
100
99
98
98
99
99
100
100
100
100
82

High Clouds (% Sky Obscured)

0
1
1
0
1
2
3
22
37
73
100
100
100
100
86
74
58
70
85
100
100
100
100
75

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
4
5
3
3
5
6
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
Very Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain

Precipitation Probability (%)

0
0
0
0
0
0
0
0
0
2
8
22
31
35
68
89
95
95
95
95
94
93
90
80

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.3
0.6
0.9
0.8
0.6
0.6
0.6
0.6
0.5
0.4

Wind Speed/Direction (mph)

9
8
7
7
7
7
7
7
8
8
10
10
13
16
19
20
21
22
23
23
23
23
23
23

Chance of Frost

Temperature (°C)

2
2
2
1
1
1
1
1
1
2
2
3
4
5
7
7
8
8
9
9
10
10
10
10

Feels Like (°C)

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

Dew Point (°C)

1
1
0
0
-0
-1
-0
-0
-0
0
0
1
2
3
4
6
7
7
8
8
8
9
9
9

Relative Humidity (%)

91
91
91
91
91
91
93
91
89
88
86
85
85
85
84
90
91
93
93
91
91
91
95
93

Pressure (mb)

1014
1014
1014
1014
1013
1013
1012
1012
1011
1010
1009
1008
1007
1006
1005
1004
1002
1001
1000
998
997
997
996
995

Ozone (du)

319
316
314
313
311
308
304
299
294
290
287
281
277
277
275
273
271
268
266
266
265
267
270
271

Monday 1

Waxing Gibbous 86%

13:50

04:24

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
15 Bad
16 Bad
17 Bad
18 Bad

Sun - Rise: 07:49, Set: 15:50, Transit: 11:49. Moon - Rise: 13:50, Set: 04:24. Civil Dark: 16:30 - 07:09. Nautical Dark: 17:13 - 06:26. Astro Dark: 17:54 - 05:45

Total Clouds (% Sky Obscured)

86
80
76
71
65
60
57
54
53
48
46
66
80
98
98
97
95
96
96
97
98
97
99
92

Low Clouds (% Sky Obscured)

84
75
66
60
53
49
46
42
40
38
33
24
36
48
61
75
88
81
75
65
57
50
44
47

Medium Clouds (% Sky Obscured)

57
40
13
22
40
21
45
45
53
48
46
52
77
95
80
65
51
61
70
81
92
93
90
78

High Clouds (% Sky Obscured)

50
30
11
0
0
0
0
17
0
0
0
29
56
84
83
72
55
49
44
42
52
63
74
58

ISS Passover

Visibility (miles)

9
9
9
5
5
8
3
2
8
5
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
Very Light Rain
None
None
Light Rain
Light Rain
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

68
31
42
62
35
42
95
73
38
18
0
0
0
0
0
0
0
10
9
7
14
13
0
1

Precipitation Amount (mm)

0.3
0
0
0.3
0
0
1.1
0.5
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

21
19
18
19
21
22
22
17
15
11
9
9
8
9
10
11
12
13
12
11
10
9
9
8

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

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

Pressure (mb)

995
995
995
995
995
995
995
997
998
999
999
1000
1000
1000
1001
1001
1001
1001
1001
1001
1001
1002
1002
1002

Ozone (du)

273
274
274
274
274
278
282
286
295
301
305
307
310
314
317
317
316
316
316
316
317
319
320
322

Tuesday 2

Waxing Gibbous 94%

14:13

06:00

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 OK
08 OK
09 OK
10 Bad
11 Bad
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad
17 Bad
18 Bad

Sun - Rise: 07:50, Set: 15:50, Transit: 11:50. Moon - Rise: 14:13, Set: 06:00. Civil Dark: 16:30 - 07:10. Nautical Dark: 17:13 - 06:27. Astro Dark: 17:54 - 05:46

Total Clouds (% Sky Obscured)

89
80
80
77
82
78
72
64
60
52
45
40
33
18
34
49
64
64
65
61
70
80
91
74

Low Clouds (% Sky Obscured)

51
58
67
72
78
78
72
64
60
52
45
30
26
18
23
27
32
36
42
46
47
47
48
41

Medium Clouds (% Sky Obscured)

60
46
41
45
45
40
42
62
47
34
16
9
5
4
10
18
22
23
23
21
27
32
31
27

High Clouds (% Sky Obscured)

42
27
19
10
1
28
51
64
49
25
5
4
3
2
2
2
2
11
16
21
27
34
37
31

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 (%)

2
0
0
0
0
3
8
13
18
17
15
13
6
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

90
90
93
93
91
91
91
89
91
91
89
91
91
91
89
86
83
79
82
84
87
90
90
91

Pressure (mb)

1003
1003
1003
1004
1004
1004
1005
1005
1005
1006
1006
1007
1007
1008
1009
1009
1009
1009
1009
1009
1009
1009
1009
1010

Ozone (du)

320
318
316
316
316
316
318
320
322
323
324
326
327
328
329
329
330
330
329
328
328
327
327
326

Wednesday 3

Waxing Gibbous 98%

14:47

07:37

19 Bad
20 OK
21 OK
22 OK
23 OK
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: 07:51, Set: 15:49, Transit: 11:50. Moon - Rise: 14:47, Set: 07:37. Civil Dark: 16:29 - 07:11. Nautical Dark: 17:13 - 06:28. Astro Dark: 17:54 - 05:47

Total Clouds (% Sky Obscured)

56
32
32
32
32
39
50
70
88
91
100
98
95
93
94
96
99

Low Clouds (% Sky Obscured)

37
32
32
31
32
35
38
40
44
44
38
38
48
66
77
87
98

Medium Clouds (% Sky Obscured)

14
0
0
1
1
1
1
1
32
63
94
87
78
67
74
80
89

High Clouds (% Sky Obscured)

17
0
3
4
6
22
45
55
57
75
100
85
70
55
56
60
65

ISS Passover

Visibility (miles)

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

Precipitation Type

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

Precipitation Probability (%)

0
0
0
0
0
0
0
0
0
0
0
9
15
21
49
64
73

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

8
8
8
8
9
9
10
11
12
13
15
17
18
19
21
20
20

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

93
93
93
93
93
91
91
91
89
88
88
88
86
87
85
87
90

Pressure (mb)

1009
1009
1009
1009
1008
1008
1007
1006
1005
1004
1003
1001
1000
999
998
997
995

Ozone (du)

325
323
321
319
316
314
313
312
311
312
313
314
318
322
325
330
335

Forecast for Bourn, Cambridgeshire, United Kingdom (52.20,-0.05)

Generated: 27/11/25 19:01:20. Forecast: 27/11/25 to 03/12/25. Timezone: UTC+0.00