Clear Outside v1.0 - International Weather Forecasts For Astronomers

Thursday 30

Waning Gibbous 98%

21:25

05:55

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

Sun - Rise: 05:20, Set: 20:54, Transit: 13:06. Moon - Rise: 21:25, Set: 05:55. Civil Dark: 21:35 - 04:39. Nautical Dark: 22:33 - 03:42. Astro Dark: 23:59 - 02:18

Total Clouds (% Sky Obscured)

22
39
36
45
98
99
99
100
100
99
95
81
46
39
87
64
84
100
95
100
100
100
88
73

Low Clouds (% Sky Obscured)

0
4
14
23
26
20
19
80
82
71
75
79
17
22
77
56
56
82
75
82
81
85
88
73

Medium Clouds (% Sky Obscured)

0
0
0
0
39
30
43
47
52
66
87
35
34
28
44
25
22
21
20
18
15
12
12
0

High Clouds (% Sky Obscured)

22
7
36
45
72
92
90
94
100
70
0
0
0
0
3
7
53
76
81
85
66
75
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
2
0
0
0
0
0
0
0
1
1
6
1
3
2
14
0
0
1
1
1
1
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)

4
4
6
9
11
10
10
11
12
11
9
9
8
6
3
4
6
12
13
13
11
9
9
8

Chance of Frost

Temperature (°C)

16
18
20
21
22
23
24
25
24
24
24
25
25
24
24
22
21
20
18
17
17
16
15
14

Feels Like (°C)

16
16
20
19
20
20
22
22
21
21
22
23
23
25
26
22
21
15
13
12
12
12
11
11

Dew Point (°C)

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

Relative Humidity (%)

85
77
67
52
44
38
38
39
46
47
48
48
44
41
44
50
50
40
44
43
44
47
48
50

Pressure (mb)

1014
1014
1014
1015
1015
1015
1014
1015
1015
1015
1015
1015
1015
1015
1015
1016
1016
1017
1017
1017
1017
1018
1018
1018

Ozone (du)

330
330
329
331
333
331
330
334
336
337
339
342
342
341
339
339
341
343
345
347
349
353
354
356

Friday 31

Waning Gibbous 94%

21:37

07:12

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

Sun - Rise: 05:22, Set: 20:52, Transit: 13:06. Moon - Rise: 21:37, Set: 07:12. Civil Dark: 21:34 - 04:40. Nautical Dark: 22:30 - 03:44. Astro Dark: 23:54 - 02:23

Total Clouds (% Sky Obscured)

22
3
0
0
2
5
18
24
65
69
64
69
73
55
42
84
25
36
41
29
33
37
38
41

Low Clouds (% Sky Obscured)

22
3
0
0
2
4
14
16
21
2
2
2
3
3
3
65
4
3
3
0
2
1
0
12

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
24
20
50
73
27
33
36
17
28
28
21
23
23
21
17

High Clouds (% Sky Obscured)

0
0
0
0
0
0
1
2
50
55
55
50
45
25
0
0
0
0
0
2
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 (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
2
4
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
9
9
9
9
9
8
7
7
7
6
7
7
6
8
9
7
7
8
7
6
6
5

Chance of Frost

Temperature (°C)

14
14
15
17
19
21
22
23
24
24
24
24
24
23
23
20
19
18
17
16
15
14
14
13

Feels Like (°C)

10
11
14
16
17
19
20
21
22
21
21
21
21
20
20
18
15
16
15
14
13
13
13
12

Dew Point (°C)

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

Relative Humidity (%)

53
55
50
43
35
28
25
23
21
21
20
20
20
20
25
31
38
45
47
52
54
58
62
68

Pressure (mb)

1018
1019
1019
1019
1019
1018
1018
1017
1017
1017
1017
1016
1016
1016
1016
1017
1018
1018
1018
1018
1018
1018
1018
1019

Ozone (du)

357
358
359
358
358
358
358
356
356
356
354
353
352
352
354
356
356
357
359
361
366
372
375
374

Saturday 1

Waning Gibbous 88%

21:48

08:28

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

Sun - Rise: 05:23, Set: 20:50, Transit: 13:06. Moon - Rise: 21:48, Set: 08:28. Civil Dark: 21:32 - 04:42. Nautical Dark: 22:28 - 03:47. Astro Dark: 23:49 - 02:28

Total Clouds (% Sky Obscured)

35
28
10
0
0
0
20
6
6
3
13
48
77
76
77
75
65
59
59
68
71
80
86
92

Low Clouds (% Sky Obscured)

13
0
0
0
0
0
16
6
5
3
2
2
2
7
3
3
3
0
0
0
0
0
1
3

Medium Clouds (% Sky Obscured)

13
11
4
0
0
0
0
0
0
0
2
17
24
19
11
7
4
2
4
9
13
71
86
91

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
1
0
7
12
40
48
57
65
58
59
59
64
68
68
73
85

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

Chance of Frost

Temperature (°C)

13
14
16
18
20
22
23
24
25
25
26
25
25
24
23
21
19
18
16
15
14
14
13
13

Feels Like (°C)

12
14
16
17
19
20
22
22
23
23
24
23
23
21
20
17
15
14
13
11
11
11
11
11

Dew Point (°C)

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

Relative Humidity (%)

69
60
50
44
37
34
31
29
26
24
23
22
23
22
27
33
43
50
51
53
57
60
61
62

Pressure (mb)

1019
1019
1020
1020
1019
1019
1019
1019
1018
1018
1018
1017
1017
1017
1017
1018
1018
1018
1018
1018
1018
1018
1018
1018

Ozone (du)

374
370
364
362
363
362
356
348
344
342
340
338
335
334
333
331
330
327
328
326
326
327
329
329

Sunday 2

Waning Gibbous 80%

21:58

09:45

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
03 Bad
04 Bad
05 Bad

Sun - Rise: 05:25, Set: 20:49, Transit: 13:06. Moon - Rise: 21:58, Set: 09:45. Civil Dark: 21:30 - 04:44. Nautical Dark: 22:25 - 03:49. Astro Dark: 23:44 - 02:32

Total Clouds (% Sky Obscured)

100
98
96
100
100
100
100
100
84
100
98
97
96
96
97
97
98
99
100
100
89
57
59
73

Low Clouds (% Sky Obscured)

4
8
11
15
15
15
12
12
13
12
17
9
0
0
0
0
1
27
37
15
4
6
5
3

Medium Clouds (% Sky Obscured)

59
19
56
74
56
96
99
97
41
53
40
41
96
96
66
90
95
92
77
84
67
17
18
26

High Clouds (% Sky Obscured)

100
92
73
100
100
100
88
78
74
100
86
75
67
63
69
66
80
90
100
100
59
52
55
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
2
3
3
5
5
3
2
2
0
0
0
0
1
1
1
2
2
2
2
1

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)

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

Chance of Frost

Temperature (°C)

14
14
16
18
20
21
23
24
25
25
25
24
24
23
22
20
19
18
18
17
17
16
16
16

Feels Like (°C)

11
11
13
16
18
19
20
22
22
23
22
19
20
19
17
17
16
16
15
14
14
14
15
15

Dew Point (°C)

7
7
7
7
8
7
6
5
4
3
4
7
6
6
8
10
11
12
12
11
12
13
13
13

Relative Humidity (%)

63
63
56
49
44
39
34
29
26
23
24
33
30
31
42
50
59
66
68
69
73
79
83
85

Pressure (mb)

1018
1018
1018
1018
1018
1017
1017
1016
1016
1015
1015
1015
1015
1014
1015
1015
1015
1015
1015
1015
1014
1014
1013
1013

Ozone (du)

330
329
329
329
329
329
329
328
327
327
326
325
326
326
327
328
329
330
332
332
333
332
331
327

Monday 3

Waning Gibbous 71%

22:09

11:03

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
03 Bad
04 Bad
05 Bad

Sun - Rise: 05:26, Set: 20:47, Transit: 13:06. Moon - Rise: 22:09, Set: 11:03. Civil Dark: 21:28 - 04:46. Nautical Dark: 22:23 - 03:52. Astro Dark: 23:39 - 02:37

Total Clouds (% Sky Obscured)

79
77
82
92
99
100
100
100
100
100
100
100
100
100
100
100
96
91
86
81
78
73
82
92

Low Clouds (% Sky Obscured)

0
8
15
21
22
18
18
13
10
7
4
4
9
12
13
14
13
9
5
27
48
71
79
85

Medium Clouds (% Sky Obscured)

30
26
28
32
37
45
44
46
52
58
71
84
100
97
93
88
82
77
69
58
49
36
59
79

High Clouds (% Sky Obscured)

64
59
55
73
92
96
100
100
100
100
100
100
100
100
100
100
71
43
11
4
0
0
9
18

ISS Passover

Visibility (miles)

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

Precipitation Probability (%)

0
0
1
1
11
16
19
44
39
26
26
25
23
48
64
78
69
58
41
38
33
22
40
55

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.4
0.6
0.5
0.3
0
0
0
0
0
0

Wind Speed/Direction (mph)

10
11
13
14
15
14
14
15
15
15
16
14
13
12
11
10
10
10
11
11
10
8
7
8

Chance of Frost

Temperature (°C)

16
17
19
22
24
25
26
27
27
27
26
25
24
23
22
20
18
18
18
18
18
18
18
17

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

85
77
63
47
39
34
31
29
30
31
33
38
43
50
58
67
80
81
83
88
88
88
89
90

Pressure (mb)

1012
1012
1012
1011
1011
1010
1010
1009
1009
1008
1008
1007
1007
1006
1007
1007
1007
1007
1007
1006
1006
1006
1005
1005

Ozone (du)

325
324
323
321
322
323
323
323
323
323
323
324
325
326
327
328
328
329
330
331
331
332
332
331

Tuesday 4

Waning Gibbous 60%

22:23

12:24

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
03 Bad
04 Bad
05 Bad

Sun - Rise: 05:28, Set: 20:45, Transit: 13:06. Moon - Rise: 22:23, Set: 12:24. Civil Dark: 21:26 - 04:48. Nautical Dark: 22:20 - 03:54. Astro Dark: 23:35 - 02:41

Total Clouds (% Sky Obscured)

100
96
92
88
92
96
100
100
100
100
97
97
95
96
94
92
83
70
52
64
78
93
94
95

Low Clouds (% Sky Obscured)

93
92
90
86
85
85
85
85
87
88
81
77
72
72
70
68
53
37
23
43
64
85
80
68

Medium Clouds (% Sky Obscured)

100
94
86
80
79
79
81
69
47
26
23
11
8
12
15
14
9
9
11
14
8
7
11
16

High Clouds (% Sky Obscured)

26
23
23
24
55
77
100
98
98
98
97
97
95
83
72
57
36
16
0
16
18
23
20
15

ISS Passover

Visibility (miles)

6
4
4
3
3
4
5
6
7
8
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
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
Very Light Rain
None
None
None
None
None
None
None
None

Precipitation Probability (%)

71
87
95
95
95
95
79
95
95
95
95
95
95
87
66
56
44
31
8
17
18
15
16
16

Precipitation Amount (mm)

0.3
0.6
0.7
0.8
0.8
0.7
0.2
0.5
0.9
1.3
2
2.1
1.5
0.3
0.3
0.3
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

17
17
18
19
19
20
21
21
21
21
20
19
18
17
16
15
15
14
14
14
13
13
12
12

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

92
93
90
89
88
86
86
84
80
75
70
69
66
65
71
79
86
89
95
98
95
92
89
89

Pressure (mb)

1005
1005
1005
1005
1005
1005
1005
1005
1005
1005
1005
1006
1007
1007
1008
1009
1010
1011
1012
1012
1013
1013
1014
1014

Ozone (du)

330
329
330
330
331
333
334
336
337
338
339
341
342
344
344
344
344
345
345
346
343
341
338
336

Wednesday 5

Waning Gibbous 60%

22:40

13:49

Sun - Rise: 05:30, Set: 20:43, Transit: 13:06. Moon - Rise: 22:40, Set: 13:49. Civil Dark: 21:24 - 04:50. Nautical Dark: 22:17 - 03:56. Astro Dark: 23:30 - 02:45

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

Generated: 30/07/26 06:59:26. Forecast: 30/07/26 to 05/08/26. Timezone: UTC+1.00