Clear Outside v1.0 - International Weather Forecasts For Astronomers

Friday 29

Waxing Crescent 45%

14:41

22:00

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: 06:17, Set: 19:57, Transit: 13:07. Moon - Rise: 14:41, Set: 22:00. Civil Dark: 20:32 - 05:42. Nautical Dark: 21:15 - 04:59. Astro Dark: 22:03 - 04:11

Total Clouds (% Sky Obscured)

25
34
65
100
87
71
56
71
85
99
100
100
100
100
100
100
100
100
100
99
97
97
82
55

Low Clouds (% Sky Obscured)

25
34
51
50
60
69
55
64
79
63
51
70
56
64
96
100
89
89
100
97
88
95
70
55

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
2
10
9
29
41
97
100
89
90
83
100
100
100
72
64
40
16
0

High Clouds (% Sky Obscured)

25
27
25
28
87
58
56
41
8
97
74
41
45
54
79
100
97
97
4
7
11
9
4
4

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
2
1
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
Very Light Rain
Light Rain
Light Rain
None
None
Very Light Rain
Very Light Rain
None

Precipitation Probability (%)

0
0
0
0
0
0
0
0
0
0
0
2
8
25
29
32
70
86
76
39
34
51
59
22

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.3
0.5
0.4
0
0
0.2
0.3
0

Wind Speed/Direction (mph)

9
8
9
8
8
7
7
7
7
9
12
12
14
15
16
17
16
17
17
17
17
15
15
14

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

13
13
12
12
12
12
12
12
12
12
12
10
9
11
10
10
12
15
15
16
16
16
16
15

Relative Humidity (%)

92
95
95
95
96
95
95
96
95
89
82
69
59
63
59
62
73
90
93
93
92
96
96
92

Pressure (mb)

1002
1002
1002
1002
1003
1003
1003
1003
1003
1004
1004
1004
1003
1003
1002
1002
1001
1001
1000
1000
999
999
999
1000

Ozone (du)

326
321
317
313
310
309
305
303
302
300
298
298
299
298
297
296
294
295
294
294
296
298
299
300

Saturday 30

Waxing Crescent 55%

15:51

22:32

23 Bad
00 Bad
01 Bad
02 Bad
03 Bad
04 OK
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: 06:19, Set: 19:55, Transit: 13:07. Moon - Rise: 15:51, Set: 22:32. Civil Dark: 20:29 - 05:44. Nautical Dark: 21:12 - 05:01. Astro Dark: 22:00 - 04:14

Total Clouds (% Sky Obscured)

58
48
49
42
41
31
41
49
52
71
67
80
78
81
83
60
46
45
50
44
55
64
70
71

Low Clouds (% Sky Obscured)

58
48
49
42
41
31
41
49
52
71
67
39
57
65
67
60
46
45
50
44
55
64
70
70

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
41
40
28
33
0
0
2
3
26
4
0
0
0

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
1
0
4
0
0
1
7

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
2
1
0
0
0
1
0
0
3
22
39
43
45
27
18
5
4
3
2
1
1
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)

11
12
12
12
11
10
10
9
9
10
15
16
18
19
19
18
18
19
18
17
16
14
13
12

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

89
90
93
93
92
92
92
93
92
86
79
70
63
58
54
45
44
46
51
57
63
71
79
84

Pressure (mb)

1001
1001
1002
1002
1002
1002
1002
1002
1003
1003
1003
1003
1003
1003
1003
1002
1002
1002
1002
1002
1002
1002
1002
1002

Ozone (du)

304
307
309
310
310
309
311
311
314
315
318
318
320
323
327
330
332
332
332
333
333
335
337
339

Sunday 31

First Quarter 65%

16:54

No Set

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: 06:21, Set: 19:52, Transit: 13:06. Moon - Rise: 16:54, Set: No Set. Civil Dark: 20:27 - 05:46. Nautical Dark: 21:10 - 05:03. Astro Dark: 21:57 - 04:16

Total Clouds (% Sky Obscured)

72
79
78
74
74
75
76
93
98
97
90
96
83
68
96
73
87
88
93
72
67
70
72
74

Low Clouds (% Sky Obscured)

72
71
69
74
74
75
74
66
68
77
60
90
61
66
81
62
78
72
47
72
45
70
71
70

Medium Clouds (% Sky Obscured)

0
4
9
74
74
39
75
61
79
21
72
65
20
11
6
12
17
14
74
65
49
9
4
73

High Clouds (% Sky Obscured)

0
0
8
15
15
2
18
18
19
18
15
9
11
18
58
43
0
56
69
6
8
21
22
6

ISS Passover

Visibility (miles)

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

Precipitation Probability (%)

1
2
3
6
5
2
3
6
8
32
48
55
78
67
61
61
59
69
79
39
17
9
2
16

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

87
87
89
87
86
86
89
90
90
84
82
74
72
71
66
71
58
67
74
83
86
84
83
86

Pressure (mb)

1002
1002
1001
1001
1000
1000
1000
1000
1000
1000
1000
1000
1000
1001
1001
1001
1001
1001
1001
1002
1002
1003
1003
1004

Ozone (du)

341
342
337
332
332
333
331
329
327
325
323
322
322
322
322
323
321
318
315
314
315
319
321
323

Monday 1

Waxing Gibbous 74%

17:44

23:19

23 Bad
00 Bad
01 Bad
02 Bad
03 Bad
04 Bad
05 OK
06 OK
07 OK
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: 06:22, Set: 19:50, Transit: 13:06. Moon - Rise: 17:44, Set: 23:19. Civil Dark: 20:25 - 05:47. Nautical Dark: 21:07 - 05:05. Astro Dark: 21:54 - 04:18

Total Clouds (% Sky Obscured)

75
50
39
44
51
45
41
36
40
58
44
61
84
84
87
93
100
100
100
100
81
63
44
60

Low Clouds (% Sky Obscured)

66
50
39
44
49
45
41
36
40
53
44
35
36
32
45
59
54
65
66
63
56
52
44
59

Medium Clouds (% Sky Obscured)

70
1
5
10
15
11
5
0
2
3
3
33
66
75
83
92
100
89
78
67
60
56
5
7

High Clouds (% Sky Obscured)

15
6
4
3
1
0
0
1
1
3
0
6
15
28
28
27
30
57
77
95
60
30
0
19

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
5
5
9
7
3
3
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
None
None
None
None
None
None
None
Very Light Rain
Light Rain
Light Rain
Light Rain
Very Light Rain
None
None
None

Precipitation Probability (%)

7
2
1
1
0
1
1
0
1
2
1
10
31
43
41
44
65
83
83
80
60
45
13
12

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.3
0.7
0.6
0.5
0.2
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

10
10
10
11
11
10
11
11
11
12
12
14
14
14
15
16
16
15
14
15
15
14
14
14

Dew Point (°C)

11
11
11
11
10
10
10
10
10
11
10
10
10
10
13
15
14
13
14
14
14
14
13
13

Relative Humidity (%)

89
90
95
96
95
95
95
96
95
89
79
70
64
63
76
87
85
81
89
95
95
96
95
95

Pressure (mb)

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

Ozone (du)

323
323
322
321
320
320
319
319
320
320
319
319
320
320
321
322
322
323
325
326
328
323
317
314

Tuesday 2

Waxing Gibbous 83%

18:22

00:20

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: 06:24, Set: 19:48, Transit: 13:06. Moon - Rise: 18:22, Set: 00:20. Civil Dark: 20:22 - 05:49. Nautical Dark: 21:05 - 05:07. Astro Dark: 21:51 - 04:21

Total Clouds (% Sky Obscured)

71
86
90
95
92
97
100
100
100
100
100
100
100
100
100
100
100
100
99
99
92
85
79
82

Low Clouds (% Sky Obscured)

65
77
74
64
62
66
69
66
69
69
69
65
60
56
68
79
91
87
83
79
74
70
65
62

Medium Clouds (% Sky Obscured)

0
0
0
0
12
19
67
77
83
86
88
89
91
92
90
84
79
73
67
63
72
83
79
82

High Clouds (% Sky Obscured)

35
53
74
89
76
79
93
96
100
100
100
100
100
100
100
100
100
98
98
97
90
79
60
28

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
8
7
6
5
4
6
8
9
7
4
1

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
Light Rain
Light Rain
None
None
None
None
Very Light Rain

Precipitation Probability (%)

11
0
1
1
0
0
0
0
1
3
6
21
34
43
88
95
95
95
85
46
43
43
39
56

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.6
0.9
1.4
0.9
0.5
0
0
0
0
0.3

Wind Speed/Direction (mph)

4
3
4
3
2
3
3
4
4
7
8
11
12
14
15
15
15
15
14
14
15
14
14
13

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

95
95
95
95
95
96
95
96
96
93
93
92
90
86
87
89
90
93
92
90
89
92
93
96

Pressure (mb)

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

Ozone (du)

313
312
310
309
306
304
302
302
300
297
295
293
292
290
289
290
291
293
292
291
290
290
290
290

Wednesday 3

Waxing Gibbous 90%

18:49

01:35

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: 06:25, Set: 19:46, Transit: 13:05. Moon - Rise: 18:49, Set: 01:35. Civil Dark: 20:20 - 05:51. Nautical Dark: 21:02 - 05:09. Astro Dark: 21:48 - 04:23

Total Clouds (% Sky Obscured)

84
84
86
87
88
91
94
98
98
99
99
99
99
99
99
100
100
100
100
100
94
88
83
63

Low Clouds (% Sky Obscured)

59
59
46
36
27
37
41
47
45
45
45
52
60
68
71
76
78
75
71
64
59
54
49
38

Medium Clouds (% Sky Obscured)

83
78
69
62
56
67
81
94
96
98
99
98
97
96
97
98
99
99
100
100
73
43
12
8

High Clouds (% Sky Obscured)

17
15
10
5
4
8
13
17
37
57
76
83
91
99
83
68
52
70
85
100
70
41
13
13

ISS Passover

Visibility (miles)

4
6
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
Light Rain
Very Light Rain
None
None
None
None
None
None
None
None
None
None
None
None
Very Light Rain
Light Rain
Light Rain
Very Light Rain
None
Very Light Rain
Light Rain
Light Rain
None

Precipitation Probability (%)

62
65
56
54
42
44
46
50
60
60
48
43
36
33
52
64
73
72
74
69
76
76
65
38

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

14
14
15
14
14
14
13
12
12
11
10
9
9
8
7
5
5
7
7
6
6
6
6
7

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

14
14
13
13
13
13
13
12
13
12
12
12
12
11
11
14
13
13
14
14
15
12
13
13

Dew Point (°C)

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

Relative Humidity (%)

96
96
96
95
96
95
95
93
93
87
82
78
70
64
58
59
58
59
65
69
75
79
83
87

Pressure (mb)

1005
1005
1005
1006
1006
1006
1006
1006
1006
1007
1007
1008
1008
1008
1008
1008
1007
1007
1008
1008
1008
1008
1009
1009

Ozone (du)

290
290
290
290
290
290
290
289
288
289
290
292
292
293
294
294
294
295
298
301
305
307
310
313

Thursday 4

Waxing Gibbous 87%

19:08

02:57

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: 06:27, Set: 19:43, Transit: 13:05. Moon - Rise: 19:08, Set: 02:57. Civil Dark: 20:18 - 05:53. Nautical Dark: 20:59 - 05:11. Astro Dark: 21:45 - 04:25

Total Clouds (% Sky Obscured)

41
19
38
57
77
79
81
83
80
77
68
70
77
87
87
88
89
78
65
53

Low Clouds (% Sky Obscured)

27
16
33
50
67
65
62
57
58
58
58
56
58
59
63
67
70
49
28
7

Medium Clouds (% Sky Obscured)

5
0
3
8
11
12
14
13
7
3
1
15
30
48
54
58
56
51
47
52

High Clouds (% Sky Obscured)

12
12
10
6
3
1
1
0
1
2
3
17
31
32
19
14
15
10
10
15

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 (%)

20
1
1
0
0
0
0
0
0
1
0
14
22
31
39
44
46
37
27
19

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)

7
7
8
8
8
8
8
8
9
11
13
16
16
16
17
16
16
17
14
12

Chance of Frost

Temperature (°C)

13
13
12
12
12
11
11
11
11
13
15
17
18
19
19
19
19
19
18
17

Feels Like (°C)

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

Dew Point (°C)

11
11
11
11
11
11
11
11
10
11
11
12
12
11
11
11
12
12
12
12

Relative Humidity (%)

89
92
93
93
95
95
96
96
95
86
78
71
66
62
58
60
62
64
66
71

Pressure (mb)

1010
1010
1011
1011
1011
1012
1012
1012
1013
1013
1013
1013
1013
1013
1013
1013
1013
1013
1013
1014

Ozone (du)

315
318
320
318
315
312
311
310
308
307
306
304
303
302
301
301
300
300
300
300

Forecast for Swindon, Swindon, United Kingdom (51.56,-1.79)

Generated: 29/08/25 23:02:55. Forecast: 29/08/25 to 04/09/25. Timezone: UTC+1.00