Clear Outside v1.0 - International Weather Forecasts For Astronomers

Monday 31

Waning Gibbous 83%

20:32

No Set

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

Sun - Rise: 06:13, Set: 19:50, Transit: 13:01. Moon - Rise: 20:32, Set: No Set. Civil Dark: 20:26 - 05:38. Nautical Dark: 21:09 - 04:55. Astro Dark: 21:58 - 04:06

Total Clouds (% Sky Obscured)

61
63
75
57
36
40
46
79
100
100
97
100
75
83
33
42
28
23
26
34
48
36
56
52

Low Clouds (% Sky Obscured)

58
52
75
34
15
37
41
57
59
64
13
0
0
0
0
0
0
0
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

14
16
22
15
7
0
0
0
0
38
45
74
75
83
32
35
15
12
12
16
23
11
12
12

High Clouds (% Sky Obscured)

0
0
0
0
0
0
6
66
100
100
94
100
53
27
1
1
1
1
2
2
2
14
33
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 (%)

3
10
1
11
2
11
1
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)

12
12
12
14
16
16
14
12
11
10
9
9
7
5
5
6
6
5
5
5
5
6
8
9

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

12
12
12
15
13
13
13
13
13
13
12
11
10
10
9
9
9
9
9
9
9
9
9
9

Relative Humidity (%)

66
61
60
67
59
58
61
63
67
70
68
69
71
75
76
79
81
81
83
83
81
75
66
58

Pressure (mb)

1009
1010
1010
1011
1012
1013
1013
1014
1015
1016
1017
1018
1018
1018
1019
1018
1019
1019
1019
1019
1020
1020
1020
1020

Ozone (du)

337
336
332
329
326
324
323
321
318
316
317
319
319
319
318
317
316
315
314
315
314
314
314
316

Tuesday 1

Waning Gibbous 74%

20:48

11:37

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

Sun - Rise: 06:15, Set: 19:48, Transit: 13:01. Moon - Rise: 20:48, Set: 11:37. Civil Dark: 20:23 - 05:40. Nautical Dark: 21:07 - 04:57. Astro Dark: 21:55 - 04:09

Total Clouds (% Sky Obscured)

52
40
52
50
61
83
100
100
100
100
84
95
41
25
15
15
37
67
57
100
96
100
100
100

Low Clouds (% Sky Obscured)

14
31
1
20
9
4
69
49
35
35
2
2
2
2
2
9
13
18
18
18
17
63
59
64

Medium Clouds (% Sky Obscured)

4
14
13
13
9
17
11
14
24
37
33
17
15
25
15
7
4
5
14
12
13
100
51
64

High Clouds (% Sky Obscured)

20
1
28
3
37
78
100
100
100
29
20
87
20
20
9
1
23
67
32
100
87
100
100
89

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
1
28
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

53
49
46
44
40
39
41
58
61
62
64
72
73
74
76
82
86
87
90
92
89
84
85
78

Pressure (mb)

1020
1020
1020
1019
1019
1019
1018
1019
1019
1019
1019
1019
1020
1020
1019
1020
1019
1019
1019
1019
1019
1020
1020
1020

Ozone (du)

317
318
318
317
317
316
317
320
320
318
318
319
318
320
322
322
318
312
308
306
305
304
304
301

Wednesday 2

Waning Gibbous 63%

21:09

13:04

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
06 Bad
07 Bad
08 Bad
09 Bad
10 Bad

Sun - Rise: 06:17, Set: 19:46, Transit: 13:00. Moon - Rise: 21:09, Set: 13:04. Civil Dark: 20:21 - 05:42. Nautical Dark: 21:04 - 04:58. Astro Dark: 21:52 - 04:11

Total Clouds (% Sky Obscured)

97
100
100
100
100
98
99
97
62
66
77
99
97
91
100
99
100
99
100
100
99
99
98
99

Low Clouds (% Sky Obscured)

67
67
66
64
100
83
87
96
62
60
63
73
75
51
39
49
64
54
51
64
61
55
56
61

Medium Clouds (% Sky Obscured)

97
62
99
96
100
98
91
11
9
14
18
15
16
9
17
47
17
68
19
57
97
95
97
93

High Clouds (% Sky Obscured)

21
78
89
75
100
68
52
65
62
66
77
99
45
48
100
98
90
93
100
100
96
89
87
82

ISS Passover

Visibility (miles)

9
9
9
9
9
9
7
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 (%)

32
5
9
30
22
22
6
0
0
0
0
2
4
0
0
0
3
2
0
2
10
15
7
16

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)

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

Chance of Frost

Temperature (°C)

17
17
19
19
19
19
19
19
19
19
18
18
18
18
18
18
18
18
18
18
18
18
19
20

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

72
73
70
66
62
70
73
77
68
80
83
86
90
92
93
95
95
93
93
92
90
89
88
85

Pressure (mb)

1020
1020
1020
1019
1019
1018
1018
1017
1017
1017
1017
1017
1017
1017
1017
1017
1017
1017
1016
1016
1017
1017
1017
1017

Ozone (du)

298
297
296
295
295
297
296
296
295
294
295
294
293
293
293
292
291
291
289
288
287
288
287
287

Thursday 3

Waning Gibbous 51%

21:41

14:31

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
06 Bad
07 Bad
08 Bad
09 Bad
10 Bad

Sun - Rise: 06:18, Set: 19:43, Transit: 13:00. Moon - Rise: 21:41, Set: 14:31. Civil Dark: 20:18 - 05:43. Nautical Dark: 21:01 - 05:00. Astro Dark: 21:49 - 04:14

Total Clouds (% Sky Obscured)

99
100
99
98
96
95
93
90
90
91
90
92
96
100
100
100
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

61
58
55
75
78
83
75
74
77
79
81
78
77
77
78
79
80
80
77
69
73
65
58
56

Medium Clouds (% Sky Obscured)

32
52
87
54
96
61
36
25
15
72
90
92
93
93
94
96
97
96
94
90
92
95
100
100

High Clouds (% Sky Obscured)

93
97
76
55
28
27
22
19
20
21
21
36
72
100
100
99
99
99
100
100
92
86
81
76

ISS Passover

Visibility (miles)

9
9
9
6
5
4
3
7
9
9
8
7
9
9
9
9
9
8
8
7
7
9
7
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
Light Rain
Light Rain
Light Rain
Light Rain
None
None
None
Light Rain
Light Rain
None
None
None
None
None
None
None
None
Very Light Rain
None
None
None

Precipitation Probability (%)

15
10
43
73
78
91
84
55
49
48
79
82
42
33
18
16
38
36
40
45
48
37
43
35

Precipitation Amount (mm)

0
0
0
0.4
0.4
0.7
0.5
0
0
0
0.6
0.7
0
0
0
0
0
0
0
0
0.2
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

20
21
21
22
21
21
21
21
22
21
20
20
19
19
19
18
18
18
18
18
18
18
19
20

Feels Like (°C)

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

Dew Point (°C)

17
17
16
15
16
16
17
18
19
18
17
17
17
17
17
16
16
16
16
16
16
17
16
16

Relative Humidity (%)

82
76
72
66
69
71
77
81
85
85
81
84
88
89
90
86
88
89
89
88
89
89
85
78

Pressure (mb)

1017
1017
1017
1016
1016
1015
1015
1015
1014
1015
1015
1015
1014
1014
1014
1013
1013
1012
1012
1012
1012
1012
1012
1012

Ozone (du)

287
287
288
288
288
287
286
288
288
287
288
288
288
289
292
295
298
303
305
306
307
310
313
315

Friday 4

Third Quarter 39%

22:28

15:51

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 OK
00 OK
01 OK
02 Bad
03 Bad
04 Bad
05 Bad
06 Bad
07 Bad
08 Bad
09 Bad
10 Bad

Sun - Rise: 06:20, Set: 19:41, Transit: 13:00. Moon - Rise: 22:28, Set: 15:51. Civil Dark: 20:16 - 05:45. Nautical Dark: 20:59 - 05:02. Astro Dark: 21:46 - 04:16

Total Clouds (% Sky Obscured)

100
100
88
80
100
100
100
100
65
60
61
55
48
39
47
54
66
70
65
59
61
62
62
66

Low Clouds (% Sky Obscured)

45
55
34
25
18
13
8
5
7
8
11
7
3
0
3
5
7
4
2
1
23
40
57
59

Medium Clouds (% Sky Obscured)

27
20
15
10
5
5
5
0
3
2
0
0
0
0
0
0
0
0
0
0
2
2
3
1

High Clouds (% Sky Obscured)

74
70
60
62
98
98
99
100
65
60
61
55
48
39
47
54
66
70
65
59
47
36
24
19

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

Precipitation Probability (%)

34
41
24
14
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Amount (mm)

0
0.2
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

15
13
12
9
8
9
9
10
10
10
10
10
10
10
10
10
10
10
10
10
9
9
9
9

Relative Humidity (%)

71
62
56
46
42
44
46
52
56
61
65
67
70
74
78
79
82
83
81
83
81
75
69
64

Pressure (mb)

1012
1012
1012
1012
1012
1012
1013
1013
1014
1015
1015
1016
1016
1017
1017
1017
1018
1018
1019
1020
1020
1021
1022
1022

Ozone (du)

320
320
322
323
323
326
333
335
336
334
334
335
337
340
340
336
333
329
327
325
323
320
317
314

Saturday 5

Waning Crescent 28%

23:34

16:56

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
06 OK
07 OK
08 OK
09 Good
10 Good

Sun - Rise: 06:21, Set: 19:39, Transit: 12:59. Moon - Rise: 23:34, Set: 16:56. Civil Dark: 20:14 - 05:47. Nautical Dark: 20:56 - 05:04. Astro Dark: 21:43 - 04:18

Total Clouds (% Sky Obscured)

68
67
66
60
55
66
79
84
74
63
51
58
65
72
77
81
86
75
63
46
34
24
16
15

Low Clouds (% Sky Obscured)

61
62
52
39
23
22
21
17
5
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

0
0
0
1
0
0
0
0
0
0
3
6
10
14
22
30
34
35
33
25
18
9
2
5

High Clouds (% Sky Obscured)

15
11
11
11
8
15
11
10
11
11
12
10
9
7
8
18
49
65
49
30
23
14
5
10

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)

12
12
13
13
13
13
11
9
7
6
5
4
4
4
3
3
3
3
3
3
3
4
6
7

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

12
12
13
15
15
15
16
16
17
14
14
15
14
13
13
11
11
12
12
11
11
13
13
13

Dew Point (°C)

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

Relative Humidity (%)

59
54
50
46
43
40
44
47
52
56
62
67
68
71
74
75
76
77
77
76
76
67
60
55

Pressure (mb)

1023
1023
1024
1024
1024
1024
1024
1025
1025
1025
1026
1026
1026
1026
1026
1026
1026
1026
1026
1026
1026
1026
1026
1026

Ozone (du)

312
311
309
309
309
308
308
307
307
306
305
305
303
301
299
298
298
297
296
295
295
293
291
289

Sunday 6

Waning Crescent 18%

00:56

17:43

11 OK
12 OK
13 OK
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
03 Bad
04 Bad
05 Bad
06 Bad

Sun - Rise: 06:23, Set: 19:36, Transit: 12:59. Moon - Rise: 00:56, Set: 17:43. Civil Dark: 20:11 - 05:48. Nautical Dark: 20:54 - 05:06. Astro Dark: 21:40 - 04:21

Total Clouds (% Sky Obscured)

24
29
34
40
50
52
68
70
82
91
95
89
78
68
78
83
87
79
80
87

Low Clouds (% Sky Obscured)

0
0
1
2
3
7
12
16
13
7
0
4
9
13
9
4
0
0
0
0

Medium Clouds (% Sky Obscured)

5
7
4
4
5
6
8
9
9
3
7
6
5
12
10
5
0
0
0
0

High Clouds (% Sky Obscured)

13
27
33
39
50
52
67
68
82
76
70
54
30
0
33
67
87
79
80
87

ISS Passover

Visibility (miles)

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

Precipitation Type

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
7
9
10
22
30
32
23
19
7
4
2
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

Wind Speed/Direction (mph)

8
8
10
10
11
11
9
8
6
6
6
6
6
5
5
4
3
3
3
3

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

50
45
41
39
37
36
40
44
50
55
58
63
66
70
73
75
76
80
80
82

Pressure (mb)

1025
1025
1024
1024
1023
1023
1022
1022
1022
1022
1022
1022
1022
1022
1022
1021
1021
1021
1021
1021

Ozone (du)

290
290
291
291
292
292
292
291
291
291
291
291
290
288
287
288
289
290
290
291

Forecast for Blunham, Central Bedfordshire, United Kingdom (52.15,-0.32)

Generated: 31/08/26 11:09:41. Forecast: 31/08/26 to 06/09/26. Timezone: UTC+1.00