Clear Outside v1.0 - International Weather Forecasts For Astronomers

Friday 31

Waning Gibbous 94%

21:43

07:21

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

Sun - Rise: 05:31, Set: 20:56, Transit: 13:13. Moon - Rise: 21:43, Set: 07:21. Civil Dark: 21:37 - 04:51. Nautical Dark: 22:32 - 03:56. Astro Dark: 23:49 - 02:41

Total Clouds (% Sky Obscured)

22
16
12
10
0
16
27
26
22
32
25
48
59
66
100
100
100
93
0
0
0
0
0
0

Low Clouds (% Sky Obscured)

0
0
0
0
0
15
25
24
19
10
16
3
7
17
7
2
10
8
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
23
14
48
23
55
60
95
97
79
0
0
0
0
0
0

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
59
64
100
100
100
60
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
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)

6
5
5
7
7
8
8
9
9
9
9
9
12
12
11
9
8
8
6
4
3
2
2
2

Chance of Frost

Temperature (°C)

12
13
15
17
19
20
22
22
23
23
23
23
23
21
20
18
17
16
15
14
13
12
11
11

Feels Like (°C)

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

Dew Point (°C)

8
7
6
5
4
4
3
2
2
2
1
1
3
5
4
3
4
7
9
9
9
9
9
9

Relative Humidity (%)

76
69
55
44
38
33
29
25
24
24
23
22
26
33
34
36
42
54
67
74
80
84
84
86

Pressure (mb)

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

Ozone (du)

362
363
361
360
360
360
361
362
362
361
360
358
356
353
351
350
351
352
356
359
363
367
370
367

Saturday 1

Waning Gibbous 88%

21:54

08:37

06 Good
07 Good
08 Good
09 Good
10 OK
11 Bad
12 OK
13 Bad
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

Sun - Rise: 05:33, Set: 20:55, Transit: 13:13. Moon - Rise: 21:54, Set: 08:37. Civil Dark: 21:35 - 04:52. Nautical Dark: 22:29 - 03:59. Astro Dark: 23:45 - 02:45

Total Clouds (% Sky Obscured)

0
0
0
0
35
58
36
51
47
49
52
56
67
63
68
95
82
75
86
66
62
99
100
100

Low Clouds (% Sky Obscured)

0
0
0
0
27
4
2
6
2
16
17
11
0
0
0
0
0
0
0
0
0
0
5
0

Medium Clouds (% Sky Obscured)

0
0
0
0
17
29
15
27
29
22
24
15
16
20
21
13
23
15
33
22
19
67
67
87

High Clouds (% Sky Obscured)

0
0
0
0
0
2
2
0
3
12
18
34
52
54
62
95
66
58
57
30
40
99
100
100

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)

2
2
3
5
6
7
7
9
9
9
10
10
9
8
7
6
5
4
4
4
5
5
5
5

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

11
12
15
17
19
20
21
21
20
21
21
21
20
20
19
17
14
12
12
11
11
11
10
11

Dew Point (°C)

8
7
7
7
7
6
5
4
2
2
2
2
3
3
5
7
8
6
7
8
9
9
7
8

Relative Humidity (%)

84
72
58
50
44
38
34
29
26
24
24
25
26
29
35
47
57
54
62
69
71
74
70
71

Pressure (mb)

1020
1021
1021
1021
1021
1021
1020
1020
1019
1019
1019
1018
1018
1019
1019
1019
1020
1020
1020
1020
1020
1019
1019
1019

Ozone (du)

364
360
359
356
354
352
347
344
342
340
337
336
335
334
332
331
332
330
331
332
333
332
332
333

Sunday 2

Waning Gibbous 80%

22:05

09:52

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: 05:34, Set: 20:53, Transit: 13:13. Moon - Rise: 22:05, Set: 09:52. Civil Dark: 21:33 - 04:54. Nautical Dark: 22:27 - 04:01. Astro Dark: 23:41 - 02:49

Total Clouds (% Sky Obscured)

97
65
59
66
66
100
81
91
92
88
98
100
100
90
92
95
100
78
75
82
91
100
94
72

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
16
0
0
14
15
0
0
0
0
0
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

67
22
19
20
18
28
33
27
33
88
77
78
68
31
28
16
21
36
75
82
91
71
35
32

High Clouds (% Sky Obscured)

83
42
24
42
40
100
60
81
70
60
90
100
100
72
75
86
98
15
15
14
2
20
20
13

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
2
0
0
0
0
0
0
0
0
0
0
0
1
1
1
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)

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

Chance of Frost

Temperature (°C)

13
14
15
17
20
22
24
25
26
27
27
26
26
25
24
22
20
18
17
17
16
16
15
15

Feels Like (°C)

10
12
13
14
16
19
21
22
23
24
24
24
24
23
20
18
18
16
14
14
14
13
13
13

Dew Point (°C)

7
7
6
5
5
5
5
4
4
4
3
3
2
2
4
5
6
6
6
7
7
8
9
11

Relative Humidity (%)

68
63
52
44
39
34
30
26
24
23
21
21
21
21
28
32
39
43
49
53
55
61
68
77

Pressure (mb)

1018
1018
1019
1019
1018
1018
1017
1016
1016
1015
1015
1014
1013
1013
1013
1014
1014
1014
1014
1014
1013
1013
1013
1012

Ozone (du)

332
333
331
330
330
329
330
330
329
329
329
329
330
330
331
332
332
332
333
333
331
330
329
330

Monday 3

Waning Gibbous 71%

22:17

11:10

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: 05:36, Set: 20:51, Transit: 13:13. Moon - Rise: 22:17, Set: 11:10. Civil Dark: 21:31 - 04:56. Nautical Dark: 22:25 - 04:03. Astro Dark: 23:36 - 02:53

Total Clouds (% Sky Obscured)

56
88
94
100
96
92
88
91
93
92
97
98
98
95
93
91
92
94
97
83
75
57
70
63

Low Clouds (% Sky Obscured)

0
0
0
0
0
4
2
2
1
0
8
15
22
13
6
0
0
0
0
0
0
0
0
1

Medium Clouds (% Sky Obscured)

29
74
76
95
94
92
88
87
84
72
57
35
28
64
33
36
32
28
27
74
72
33
70
63

High Clouds (% Sky Obscured)

6
55
78
100
88
71
68
71
42
48
87
86
84
71
65
56
60
67
74
46
19
16
32
35

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
2
2
1
4
6
6
6
4
0
2
3
2
4
4
4
6
8

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

Chance of Frost

Temperature (°C)

16
16
18
20
22
24
26
27
28
29
30
29
29
28
26
24
22
22
20
20
19
18
17
17

Feels Like (°C)

14
16
16
19
20
22
24
25
26
27
28
28
27
25
23
22
20
20
19
18
19
18
18
16

Dew Point (°C)

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

Relative Humidity (%)

83
75
65
57
52
45
35
28
25
23
21
21
21
23
28
35
37
41
50
61
71
73
74
76

Pressure (mb)

1012
1012
1012
1012
1012
1011
1011
1010
1010
1010
1009
1009
1009
1009
1009
1009
1010
1010
1010
1010
1010
1010
1010
1010

Ozone (du)

331
331
331
331
335
336
337
339
336
331
328
328
329
329
331
331
331
333
329
329
326
321
320
320

Tuesday 4

Waning Gibbous 60%

22:31

12:30

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: 05:37, Set: 20:50, Transit: 13:13. Moon - Rise: 22:31, Set: 12:30. Civil Dark: 21:29 - 04:58. Nautical Dark: 22:22 - 04:06. Astro Dark: 23:32 - 02:57

Total Clouds (% Sky Obscured)

55
66
79
92
94
97
100
99
98
88
92
88
93
96
89
79
80
80
81
85
86
91
92
92

Low Clouds (% Sky Obscured)

8
10
21
31
35
35
38
53
89
50
67
59
84
69
49
30
36
44
51
51
50
44
46
45

Medium Clouds (% Sky Obscured)

55
66
79
24
64
84
82
41
57
38
33
30
29
50
48
47
37
26
15
32
48
67
73
78

High Clouds (% Sky Obscured)

0
31
51
69
80
90
100
93
70
52
35
20
0
0
0
0
0
0
0
25
50
80
60
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
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Very Light Rain
None
None
None
None
None
None

Precipitation Probability (%)

4
10
8
10
15
18
22
26
25
26
24
26
59
74
75
76
63
45
14
17
21
25
25
23

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

5
4
5
6
7
8
9
10
11
11
12
14
14
11
7
5
3
3
3
4
4
4
4
4

Chance of Frost

Temperature (°C)

18
18
20
21
22
23
24
25
25
25
26
26
25
23
21
20
18
18
18
18
18
17
17
17

Feels Like (°C)

16
18
19
20
21
21
21
22
23
23
24
23
22
22
22
22
22
21
21
20
20
20
20
19

Dew Point (°C)

12
12
11
10
9
6
5
6
6
7
7
9
12
16
16
17
17
17
17
17
17
17
17
17

Relative Humidity (%)

70
65
58
50
42
33
30
29
29
30
29
33
43
65
74
82
92
93
93
95
96
96
96
95

Pressure (mb)

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

Ozone (du)

320
318
317
315
314
313
312
312
312
311
311
312
312
312
311
311
310
311
312
313
313
313
313
313

Wednesday 5

Waning Gibbous 60%

22:49

13:54

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 OK
22 OK
23 OK
00 Bad
01 Bad
02 Bad
03 Bad
04 Bad
05 Bad

Sun - Rise: 05:39, Set: 20:48, Transit: 13:13. Moon - Rise: 22:49, Set: 13:54. Civil Dark: 21:27 - 05:00. Nautical Dark: 22:20 - 04:08. Astro Dark: 23:28 - 03:00

Total Clouds (% Sky Obscured)

93
87
81
75
75
76
77
81
82
83
83
84
85
68
50
33
40
43
51
62
75
92
94
95

Low Clouds (% Sky Obscured)

43
45
45
47
50
53
57
64
71
76
74
74
69
60
47
33
40
43
51
53
56
57
64
72

Medium Clouds (% Sky Obscured)

83
64
47
31
29
25
24
30
33
32
25
21
18
14
9
4
3
2
1
2
4
5
17
24

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
1
2
3
12
20
28
22
13
4
6
8
11
27
42
67
66
57

ISS Passover

Visibility (miles)

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

Precipitation Probability (%)

31
38
44
50
44
43
50
43
39
44
34
31
21
16
13
4
7
6
0
1
1
1
1
1

Precipitation Amount (mm)

0
0
0
0.2
0
0
0.2
0
0
0.2
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

96
95
88
81
75
62
52
44
42
40
38
43
47
53
55
58
60
65
71
77
83
90
96
93

Pressure (mb)

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

Ozone (du)

313
313
313
313
313
314
314
315
314
314
314
314
314
314
314
314
314
315
317
318
318
319
319
319

Thursday 6

Third Quarter 48%

23:15

15:21

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

Sun - Rise: 05:40, Set: 20:46, Transit: 13:12. Moon - Rise: 23:15, Set: 15:21. Civil Dark: 21:25 - 05:01. Nautical Dark: 22:17 - 04:10. Astro Dark: 23:25 - 03:04

Total Clouds (% Sky Obscured)

96
95
97
100
100
100
99
97
95
95
97
98
99
99
100
100
98
96
93

Low Clouds (% Sky Obscured)

79
79
78
78
68
57
41
34
29
27
26
24
25
51
70
86
77
66
55

Medium Clouds (% Sky Obscured)

34
24
19
14
15
16
16
17
23
24
30
30
30
29
27
26
24
23
18

High Clouds (% Sky Obscured)

52
56
62
65
66
72
75
71
75
76
82
85
88
90
94
94
91
88
84

ISS Passover

Visibility (miles)

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

Precipitation Type

None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

0
3
6
5
8
8
5
11
13
10
22
28
24
48
49
42
44
41
31

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

17
17
18
19
19
19
20
20
24
23
22
23
23
23
21
20
20
20
20

Dew Point (°C)

15
14
15
15
16
16
16
16
14
12
10
10
9
9
10
11
12
14
15

Relative Humidity (%)

89
85
82
80
77
72
66
61
52
44
38
39
40
41
48
56
64
73
82

Pressure (mb)

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

Ozone (du)

319
318
319
319
320
319
318
318
318
318
318
318
318
318
318
318
317
317
317

Forecast for Swindon, Swindon, United Kingdom (51.56,-1.78)

Generated: 31/07/26 06:14:57. Forecast: 31/07/26 to 06/08/26. Timezone: UTC+1.00