Clear Outside v1.0 - International Weather Forecasts For Astronomers

Tuesday 25

Waxing Gibbous 95%

19:32

03:38

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
19 Bad
20 Bad
21 Bad
22 Bad

Sun - Rise: 06:02, Set: 20:01, Transit: 13:01. Moon - Rise: 19:32, Set: 03:38. Civil Dark: 20:37 - 05:26. Nautical Dark: 21:22 - 04:41. Astro Dark: 22:13 - 03:50

Total Clouds (% Sky Obscured)

20
39
63
100
100
99
100
100
100
100
100
100
82
79
84
70
79
75
100
100
81
100
100
100

Low Clouds (% Sky Obscured)

0
0
0
0
0
4
23
46
82
93
96
90
69
66
69
70
75
75
84
75
40
15
13
19

Medium Clouds (% Sky Obscured)

12
7
12
24
48
99
99
100
100
100
100
70
18
20
17
4
10
2
11
7
19
0
19
60

High Clouds (% Sky Obscured)

20
39
63
100
100
65
100
100
72
80
68
76
70
10
6
16
18
24
100
100
15
100
100
100

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
6
3
9
9
9
9
9
7
6
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
Light Rain
Moderate Rain
Moderate Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Very Light Rain
None
None
Very Light Rain
Light Rain
None
None
None
None

Precipitation Probability (%)

0
0
0
1
18
22
36
95
95
95
95
91
77
72
64
54
38
29
50
72
38
22
2
6

Precipitation Amount (mm)

0
0
0
0
0
0
0
1.8
3
2.6
1.3
0.6
0.4
0.5
0.4
0.2
0
0
0.3
0.6
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

16
15
15
15
16
16
17
17
17
18
18
19
19
21
22
23
23
23
23
23
22
21
20
19

Feels Like (°C)

15
14
14
14
15
16
16
16
17
17
18
19
19
21
22
22
22
23
23
22
20
20
19
18

Dew Point (°C)

12
13
13
12
14
15
15
16
16
16
16
17
17
14
13
13
14
14
14
14
15
16
16
17

Relative Humidity (%)

80
87
87
84
87
89
92
93
92
89
88
88
86
67
58
55
57
57
56
58
64
74
81
86

Pressure (mb)

1013
1013
1013
1013
1013
1013
1012
1013
1013
1013
1013
1013
1013
1013
1013
1013
1012
1012
1012
1012
1012
1012
1013
1012

Ozone (du)

320
319
319
319
320
320
320
321
321
322
323
324
324
323
321
319
318
319
319
318
317
316
316
317

Wednesday 26

Waxing Gibbous 99%

19:45

04:56

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
21 Bad
22 Bad

Sun - Rise: 06:04, Set: 19:58, Transit: 13:01. Moon - Rise: 19:45, Set: 04:56. Civil Dark: 20:34 - 05:28. Nautical Dark: 21:19 - 04:43. Astro Dark: 22:10 - 03:52

Total Clouds (% Sky Obscured)

92
100
90
92
100
100
100
100
100
100
100
100
100
100
70
97
100
54
100
100
100
100
100
71

Low Clouds (% Sky Obscured)

17
21
27
30
51
53
63
57
67
71
80
76
77
75
51
48
64
44
30
17
25
11
10
0

Medium Clouds (% Sky Obscured)

75
100
64
15
95
100
99
80
99
84
100
98
88
70
8
32
26
5
90
6
4
0
1
2

High Clouds (% Sky Obscured)

75
99
25
46
100
100
81
100
100
100
100
100
100
100
35
92
100
5
100
100
100
100
100
62

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
7
7
9
5
4
9
9
7
9
9
6
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
Very Light Rain
Very Light Rain
Light Rain
Moderate Rain
Light Rain
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

13
3
0
3
24
18
42
67
78
95
95
95
95
73
42
21
31
20
4
5
0
0
0
0

Precipitation Amount (mm)

0
0
0
0
0
0
0
0.3
0.3
0.8
3.7
1.7
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

7
6
6
5
4
5
5
5
5
6
7
7
6
8
10
11
12
14
14
13
12
11
9
9

Chance of Frost

Temperature (°C)

18
18
17
17
17
17
17
17
18
18
19
19
19
21
22
24
25
24
24
24
23
21
19
18

Feels Like (°C)

18
18
18
17
17
17
17
17
18
19
19
20
20
21
21
22
23
21
22
21
20
19
18
17

Dew Point (°C)

16
16
16
16
15
15
15
15
16
16
16
17
17
18
18
17
16
16
16
15
14
15
15
15

Relative Humidity (%)

89
90
90
92
89
89
87
88
90
86
81
85
86
81
78
66
57
60
58
57
56
68
75
78

Pressure (mb)

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

Ozone (du)

318
318
317
316
315
316
315
315
313
313
313
315
319
322
325
325
328
333
337
337
338
336
335
334

Thursday 27

Waxing Gibbous 100%

19:56

06:14

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

Sun - Rise: 06:06, Set: 19:56, Transit: 13:01. Moon - Rise: 19:56, Set: 06:14. Civil Dark: 20:32 - 05:30. Nautical Dark: 21:17 - 04:45. Astro Dark: 22:07 - 03:55

Total Clouds (% Sky Obscured)

56
50
60
75
74
63
31
94
89
89
75
70
41
53
62
100
100
100
87
94
84
64
47
41

Low Clouds (% Sky Obscured)

0
6
19
40
42
43
31
31
27
27
33
33
15
13
13
17
55
16
50
70
63
52
38
32

Medium Clouds (% Sky Obscured)

41
50
8
0
0
0
0
7
9
9
0
0
0
4
62
89
99
90
87
94
21
18
13
8

High Clouds (% Sky Obscured)

37
40
40
33
37
20
2
51
61
20
20
10
10
19
22
100
100
100
20
25
25
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
1
3
10
12
13
10
3
0
3
5
5
4

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)

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

Chance of Frost

Temperature (°C)

17
17
16
15
15
15
15
14
15
16
18
19
21
22
23
24
24
22
22
21
19
18
18
17

Feels Like (°C)

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

Dew Point (°C)

14
13
12
11
12
12
12
12
13
13
12
10
10
9
10
10
11
12
13
13
13
14
14
14

Relative Humidity (%)

79
81
78
77
80
84
86
87
86
79
67
54
49
44
43
41
45
52
58
62
69
75
81
82

Pressure (mb)

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

Ozone (du)

334
335
337
338
339
341
341
338
339
338
338
337
338
335
333
331
330
328
327
327
324
321
320
322

Friday 28

Full Moon 99%

20:07

07:32

23 OK
00 OK
01 OK
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
21 Bad
22 Bad

Sun - Rise: 06:07, Set: 19:54, Transit: 13:00. Moon - Rise: 20:07, Set: 07:32. Civil Dark: 20:30 - 05:31. Nautical Dark: 21:14 - 04:47. Astro Dark: 22:04 - 03:57

Total Clouds (% Sky Obscured)

37
29
25
69
77
83
91
100
100
99
99
99
100
100
100
100
100
100
86
84
79
75
74
81

Low Clouds (% Sky Obscured)

29
23
23
34
44
44
48
52
49
72
70
75
84
92
91
91
91
94
76
80
68
68
70
47

Medium Clouds (% Sky Obscured)

11
8
8
9
4
5
34
88
93
95
97
83
85
51
10
15
10
20
29
28
26
24
18
16

High Clouds (% Sky Obscured)

0
0
3
23
25
53
75
100
97
91
72
80
97
80
57
27
0
0
0
0
0
0
0
43

ISS Passover

Visibility (miles)

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

Precipitation Probability (%)

2
0
0
0
0
0
0
0
22
38
36
57
39
52
75
95
95
95
87
57
41
34
20
7

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0.2
0
0
0.4
0.8
1.4
0.8
0.6
0
0
0
0
0

Wind Speed/Direction (mph)

11
11
11
11
10
10
10
9
9
11
10
11
11
13
14
11
10
10
8
7
9
9
9
9

Chance of Frost

Temperature (°C)

17
16
16
16
15
15
15
15
16
16
17
18
18
18
18
18
18
18
18
18
18
17
16
16

Feels Like (°C)

15
14
14
14
13
13
13
13
14
13
15
15
15
14
15
15
15
15
15
16
15
15
14
14

Dew Point (°C)

14
13
13
13
12
12
13
13
13
13
14
15
15
15
16
16
14
13
13
12
12
12
13
13

Relative Humidity (%)

81
81
81
82
83
83
86
89
86
79
85
85
86
85
86
86
78
73
72
67
67
72
78
82

Pressure (mb)

1006
1006
1007
1007
1007
1006
1006
1006
1006
1006
1007
1007
1006
1005
1005
1004
1004
1004
1003
1003
1003
1003
1004
1004

Ozone (du)

322
319
314
311
308
305
303
301
301
301
302
301
302
304
307
310
312
314
314
314
315
313
312
312

Saturday 29

Waning Gibbous 96%

20:18

08:50

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
21 Bad
22 Bad

Sun - Rise: 06:09, Set: 19:52, Transit: 13:00. Moon - Rise: 20:18, Set: 08:50. Civil Dark: 20:27 - 05:33. Nautical Dark: 21:11 - 04:49. Astro Dark: 22:00 - 04:00

Total Clouds (% Sky Obscured)

59
62
73
78
84
76
70
63
66
69
72
74
78
83
89
94
99
100
100
100
100
100
100
92

Low Clouds (% Sky Obscured)

28
20
43
54
70
62
65
38
52
33
41
35
24
37
44
54
70
80
91
96
88
87
82
71

Medium Clouds (% Sky Obscured)

14
12
8
7
3
5
69
12
5
20
72
55
78
83
88
83
81
91
95
100
100
100
100
81

High Clouds (% Sky Obscured)

14
25
16
10
30
17
20
25
25
30
35
39
43
47
56
69
91
97
98
97
98
99
100
90

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
8
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
None
None
None
None
None
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain

Precipitation Probability (%)

2
2
13
24
26
4
0
0
0
0
0
0
0
0
3
8
15
25
40
69
78
86
95
92

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.4
0.4
0.5
0.7
0.6

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

15
15
15
15
15
14
14
14
13
15
16
18
19
20
22
22
22
22
21
20
19
18
17
16

Feels Like (°C)

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

Dew Point (°C)

13
13
12
11
12
12
11
10
10
10
11
11
10
10
10
10
10
10
10
10
10
11
13
14

Relative Humidity (%)

85
89
80
79
82
83
83
78
78
71
71
64
55
51
47
47
47
47
51
54
57
65
76
86

Pressure (mb)

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

Ozone (du)

311
311
311
311
311
311
311
313
314
314
315
315
315
314
314
315
316
316
318
319
320
324
329
333

Sunday 30

Waning Gibbous 91%

20:31

10:11

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
21 Bad
22 Bad

Sun - Rise: 06:10, Set: 19:49, Transit: 13:00. Moon - Rise: 20:31, Set: 10:11. Civil Dark: 20:25 - 05:35. Nautical Dark: 21:09 - 04:51. Astro Dark: 21:57 - 04:02

Total Clouds (% Sky Obscured)

84
75
66
54
45
54
64
73
78
82
87
81
74
66
68
71
72
67
59
63
78
80
80
66

Low Clouds (% Sky Obscured)

61
51
44
37
26
39
56
73
78
82
87
74
58
43
29
15
1
3
5
7
7
6
5
6

Medium Clouds (% Sky Obscured)

63
44
29
15
2
2
2
2
1
1
7
13
18
22
36
50
63
61
59
63
61
54
50
39

High Clouds (% Sky Obscured)

75
62
41
28
9
10
11
16
12
9
5
4
4
3
7
26
59
67
59
63
78
77
72
54

ISS Passover

Visibility (miles)

8
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

Light Rain
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 (%)

79
50
45
35
6
14
14
11
12
13
14
14
12
3
1
0
0
0
0
0
0
0
0
0

Precipitation Amount (mm)

0.4
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
8
8
9
9
11
10
10
10
11
11
12
13
13
14
14
13
13
12
10
9
7
6
5

Chance of Frost

Temperature (°C)

16
16
15
15
15
15
15
14
14
15
16
17
18
19
21
21
21
22
21
21
20
18
17
16

Feels Like (°C)

15
15
14
14
14
14
14
13
13
12
13
13
14
15
15
18
17
16
17
16
17
15
15
14

Dew Point (°C)

14
14
13
14
13
13
13
12
12
12
12
12
11
10
8
8
8
8
8
8
8
8
9
9

Relative Humidity (%)

87
87
87
89
89
89
87
84
83
79
74
71
61
53
45
43
41
40
41
43
45
51
57
65

Pressure (mb)

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

Ozone (du)

334
336
337
338
338
339
335
331
328
326
324
322
322
321
321
321
320
320
321
322
323
323
324
324

Monday 31

Waning Gibbous 83%

20:47

11:36

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

Sun - Rise: 06:12, Set: 19:47, Transit: 13:00. Moon - Rise: 20:47, Set: 11:36. Civil Dark: 20:22 - 05:37. Nautical Dark: 21:06 - 04:53. Astro Dark: 21:54 - 04:05

Total Clouds (% Sky Obscured)

56
47
71
85
100
100
100
100
99
98
96
93
90
87
81
76
72
80
90
95

Low Clouds (% Sky Obscured)

7
7
7
10
13
20
30
35
44
49
55
57
58
59
59
61
67
76
87
87

Medium Clouds (% Sky Obscured)

25
13
8
7
6
33
60
86
87
87
88
81
73
65
73
76
72
80
90
95

High Clouds (% Sky Obscured)

40
33
58
79
100
100
100
100
84
68
51
43
34
20
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
8
6

Fog (%)

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
Very Light Rain
Very Light Rain
Light Rain

Precipitation Probability (%)

0
0
0
0
0
0
0
0
1
1
0
3
3
3
30
38
44
55
64
71

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

15
15
14
14
14
14
14
14
14
15
16
17
18
19
21
21
21
21
20
20

Feels Like (°C)

14
14
13
12
12
12
11
11
11
11
11
12
12
12
13
18
18
17
17
16

Dew Point (°C)

10
10
11
11
11
11
11
11
11
11
11
11
11
11
12
13
15
16
16
16

Relative Humidity (%)

69
74
80
82
83
84
83
82
82
76
73
69
64
59
56
61
68
75
77
78

Pressure (mb)

1017
1018
1018
1018
1018
1018
1018
1018
1018
1018
1018
1018
1018
1018
1017
1017
1017
1017
1017
1017

Ozone (du)

321
318
314
314
314
314
316
317
318
319
320
320
319
319
318
319
320
321
322
324

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

Generated: 25/08/26 23:10:00. Forecast: 25/08/26 to 31/08/26. Timezone: UTC+1.00