Clear Outside v1.0 - International Weather Forecasts For Astronomers

Monday 31

Waning Gibbous 83%

20:35

11:40

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

Sun - Rise: 06:16, Set: 19:53, Transit: 13:04. Moon - Rise: 20:35, Set: 11:40. Civil Dark: 20:29 - 05:41. Nautical Dark: 21:13 - 04:57. Astro Dark: 22:01 - 04:09

Total Clouds (% Sky Obscured)

84
77
80
60
60
91
42
85
93
89
70
44
49
58
37
54
64
54
39
20
47
53
42
44

Low Clouds (% Sky Obscured)

64
70
59
41
48
27
0
0
0
0
0
0
0
0
0
0
24
22
0
4
33
36
23
0

Medium Clouds (% Sky Obscured)

4
21
0
21
52
30
13
18
93
73
57
44
49
55
29
34
27
16
13
3
3
18
14
16

High Clouds (% Sky Obscured)

1
2
21
41
46
82
35
78
91
47
1
1
2
16
3
2
8
13
15
8
6
1
2
17

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 (%)

46
17
20
8
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

60
62
72
69
68
68
75
76
75
77
82
84
84
84
86
87
87
80
73
64
58
54
49
46

Pressure (mb)

1013
1013
1014
1014
1015
1016
1017
1018
1018
1019
1019
1019
1019
1019
1019
1019
1020
1020
1020
1020
1020
1020
1020
1019

Ozone (du)

328
324
322
319
317
319
319
319
320
319
319
316
315
314
314
314
314
315
317
318
318
318
318
318

Tuesday 1

Waning Gibbous 74%

20:50

13:07

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

Sun - Rise: 06:18, Set: 19:51, Transit: 13:03. Moon - Rise: 20:50, Set: 13:07. Civil Dark: 20:26 - 05:42. Nautical Dark: 21:10 - 04:59. Astro Dark: 21:58 - 04:11

Total Clouds (% Sky Obscured)

100
100
100
100
99
71
59
45
29
50
72
95
90
92
98
80
98
100
100
100
96
97
98
97

Low Clouds (% Sky Obscured)

60
59
57
2
5
3
3
4
1
1
1
2
15
21
23
22
32
56
51
85
70
80
69
73

Medium Clouds (% Sky Obscured)

29
34
30
25
24
21
59
41
29
50
72
50
35
39
59
52
42
40
36
33
60
44
71
83

High Clouds (% Sky Obscured)

100
100
100
100
81
6
20
20
20
20
36
80
74
92
96
21
43
100
100
58
26
4
77
73

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
1
3
34
53
30
20
4
14

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)

11
13
12
11
9
7
6
6
7
7
6
6
6
6
6
7
7
8
8
9
10
11
12
13

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

44
53
66
63
64
70
73
75
79
79
83
83
87
90
93
95
93
86
79
74
73
70
73
65

Pressure (mb)

1019
1019
1019
1019
1019
1019
1019
1019
1020
1020
1020
1019
1019
1019
1019
1019
1019
1020
1020
1020
1020
1020
1020
1019

Ozone (du)

318
319
319
320
320
321
319
317
319
321
322
317
313
309
306
305
304
301
301
299
298
296
295
294

Wednesday 2

Waning Gibbous 63%

21:12

14:34

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
11 Bad
12 Bad
13 Bad
14 Bad

Sun - Rise: 06:19, Set: 19:49, Transit: 13:03. Moon - Rise: 21:12, Set: 14:34. Civil Dark: 20:24 - 05:44. Nautical Dark: 21:07 - 05:01. Astro Dark: 21:55 - 04:14

Total Clouds (% Sky Obscured)

97
100
99
98
87
97
92
68
81
90
93
91
96
89
84
95
99
100
100
96
97
99
99
98

Low Clouds (% Sky Obscured)

70
87
89
78
51
42
57
68
78
87
74
61
70
67
71
73
73
69
71
69
86
61
78
67

Medium Clouds (% Sky Obscured)

21
44
23
13
14
8
10
12
16
9
9
12
33
59
13
28
12
43
16
20
33
30
76
78

High Clouds (% Sky Obscured)

71
97
74
65
53
81
40
40
31
50
55
60
78
48
31
43
72
79
100
75
52
31
24
22

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
8
9
9
5
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
None
None
None
None
None

Precipitation Probability (%)

0
1
6
1
0
1
2
0
0
0
1
3
8
2
6
2
3
9
14
16
12
23
35
34

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

12
10
12
13
13
15
16
17
17
17
17
16
16
16
17
16
17
17
17
17
16
17
16
16

Relative Humidity (%)

68
55
60
69
70
80
86
90
93
95
95
90
93
93
95
95
95
95
92
84
76
77
72
71

Pressure (mb)

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

Ozone (du)

294
295
294
293
292
292
291
290
291
290
292
290
290
288
287
285
285
285
285
286
287
287
287
288

Thursday 3

Waning Gibbous 51%

21:43

No Set

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
11 Bad
12 Bad
13 Bad
14 Bad

Sun - Rise: 06:21, Set: 19:46, Transit: 13:03. Moon - Rise: 21:43, Set: No Set. Civil Dark: 20:22 - 05:46. Nautical Dark: 21:05 - 05:03. Astro Dark: 21:52 - 04:16

Total Clouds (% Sky Obscured)

98
94
92
91
90
89
89
89
90
91
92
94
96
97
98
100
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

90
54
29
74
62
83
81
82
83
84
87
91
94
91
89
86
88
77
60
56
63
67
38
51

Medium Clouds (% Sky Obscured)

98
54
70
40
64
28
49
11
14
9
24
34
85
89
89
91
95
96
100
100
100
99
73
35

High Clouds (% Sky Obscured)

20
27
45
48
41
38
35
25
25
20
25
26
31
51
79
100
100
100
100
100
100
100
100
100

ISS Passover

Visibility (miles)

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

Precipitation Probability (%)

50
52
40
23
19
15
13
43
51
73
85
65
51
48
53
60
47
57
60
66
53
34
23
16

Precipitation Amount (mm)

0
0.2
0
0
0
0
0
0
0
0.4
0.7
0.2
0
0
0
0.2
0
0.2
0
0.3
0.2
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

15
16
16
18
19
19
18
18
18
18
18
17
17
17
17
17
17
17
17
16
16
16
16
13

Relative Humidity (%)

68
74
75
80
85
88
88
89
91
89
91
92
93
93
93
93
95
93
88
84
81
81
84
67

Pressure (mb)

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

Ozone (du)

287
287
287
286
287
288
289
288
287
289
290
291
292
292
296
298
302
304
305
307
308
311
313
314

Friday 4

Third Quarter 39%

22:30

15:55

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
11 Bad
12 Bad
13 Bad
14 Bad

Sun - Rise: 06:23, Set: 19:44, Transit: 13:02. Moon - Rise: 22:30, Set: 15:55. Civil Dark: 20:19 - 05:48. Nautical Dark: 21:02 - 05:05. Astro Dark: 21:49 - 04:18

Total Clouds (% Sky Obscured)

100
100
100
100
99
97
96
97
98
100
100
100
99
96
92
84
82
76
73
65
59
51
62
70

Low Clouds (% Sky Obscured)

32
19
10
2
10
19
26
24
24
26
19
11
3
2
1
0
26
26
28
33
26
14
10
12

Medium Clouds (% Sky Obscured)

30
25
20
20
12
5
0
0
0
0
0
0
0
4
8
22
2
4
4
3
3
2
4
7

High Clouds (% Sky Obscured)

100
100
100
100
97
94
92
94
97
100
100
99
98
91
84
76
70
63
53
35
21
5
3
2

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
1
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)

16
16
15
15
13
11
9
8
8
8
8
7
7
7
6
5
5
7
8
9
9
9
8
8

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

15
14
14
13
13
13
13
12
11
11
10
10
10
9
9
9
9
10
10
11
12
12
13
19

Dew Point (°C)

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

Relative Humidity (%)

64
53
50
51
58
63
68
73
75
79
81
84
86
87
89
90
90
82
74
68
62
57
52
50

Pressure (mb)

1014
1014
1015
1015
1016
1017
1018
1018
1019
1019
1020
1020
1020
1020
1021
1021
1022
1023
1023
1024
1024
1024
1024
1024

Ozone (du)

313
313
314
314
314
314
314
313
313
313
312
312
311
310
308
305
304
303
301
300
298
296
294
292

Saturday 5

Waning Crescent 28%

23:37

17:00

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

Sun - Rise: 06:24, Set: 19:42, Transit: 13:02. Moon - Rise: 23:37, Set: 17:00. Civil Dark: 20:17 - 05:49. Nautical Dark: 20:59 - 05:07. Astro Dark: 21:46 - 04:21

Total Clouds (% Sky Obscured)

77
59
59
65
68
71
74
71
69
68
55
44
34
35
42
48
49
51
52
58
65
62
66
71

Low Clouds (% Sky Obscured)

9
7
6
5
4
3
1
1
0
0
0
0
1
0
1
1
4
2
0
1
1
2
2
2

Medium Clouds (% Sky Obscured)

10
9
9
7
14
22
30
38
48
58
44
30
16
14
9
4
1
0
0
2
4
10
22
33

High Clouds (% Sky Obscured)

1
2
2
6
6
13
21
17
10
3
1
1
0
11
23
34
40
47
52
58
59
62
66
71

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
2

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

48
45
49
53
56
57
59
58
61
66
68
70
71
72
72
74
74
68
63
58
52
47
42
41

Pressure (mb)

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

Ozone (du)

291
289
289
289
289
290
290
290
290
291
292
293
295
296
296
297
297
296
294
293
292
291
289
289

Sunday 6

Waning Crescent 18%

00:59

17:46

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

Sun - Rise: 06:26, Set: 19:39, Transit: 13:02. Moon - Rise: 00:59, Set: 17:46. Civil Dark: 20:14 - 05:51. Nautical Dark: 20:57 - 05:09. Astro Dark: 21:43 - 04:23

Total Clouds (% Sky Obscured)

81
83
87
88
94
97
100
71
39
8
39
69
100
83
68
58
56
57
56
64
69
74

Low Clouds (% Sky Obscured)

1
11
24
35
25
13
0
0
0
1
8
22
32
33
33
32
27
24
26
26
25
22

Medium Clouds (% Sky Obscured)

40
45
51
56
57
57
57
54
39
8
39
59
62
63
68
58
56
57
56
64
69
74

High Clouds (% Sky Obscured)

81
83
86
88
94
97
100
68
37
5
37
68
100
71
43
24
19
19
19
13
8
3

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

Fog (%)

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

Precipitation Probability (%)

4
13
20
27
34
38
40
21
8
1
1
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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

21
20
21
21
23
18
18
18
18
17
16
12
12
13
12
13
13
14
14
15
16
17

Dew Point (°C)

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

Relative Humidity (%)

39
37
42
47
53
54
54
55
57
58
60
59
58
57
60
62
63
65
65
67
65
63

Pressure (mb)

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

Ozone (du)

288
288
288
288
289
289
289
289
289
289
289
289
290
290
292
294
297
298
300
301
300
298

Forecast for Nether Heyford, Northamptonshire, United Kingdom (52.22,-1.04)

Generated: 31/08/26 15:29:14. Forecast: 31/08/26 to 06/09/26. Timezone: UTC+1.00