Clear Outside v1.0 - International Weather Forecasts For Astronomers

Monday 27

Waxing Gibbous 97%

20:26

02:29

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

Sun - Rise: 05:24, Set: 21:03, Transit: 13:13. Moon - Rise: 20:26, Set: 02:29. Civil Dark: 21:44 - 04:42. Nautical Dark: 22:41 - 03:45. Astro Dark: 00:08 - 02:18

Total Clouds (% Sky Obscured)

78
62
49
44
0
0
6
28
29
21
20
26
25
23
29
46
37
56
29
18
20
8
29
48

Low Clouds (% Sky Obscured)

2
7
0
2
0
0
5
24
24
14
16
17
17
15
22
37
24
51
26
6
4
0
0
32

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
4
17
19
4
4
2
0
0
11

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
2
0
0
0
2
2
7
4
7
13
8
29
9

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

12
13
12
12
12
11
11
10
9
9
8
7
6
6
6
7
8
10
12
12
14
15
16
16

Relative Humidity (%)

74
78
82
87
93
93
83
69
60
52
45
40
35
34
33
34
38
44
53
57
73
86
95
98

Pressure (mb)

1014
1015
1015
1016
1016
1017
1017
1018
1018
1019
1019
1019
1019
1019
1018
1018
1018
1019
1019
1019
1020
1020
1021
1021

Ozone (du)

331
330
329
328
328
329
330
329
329
329
329
329
330
329
330
331
330
330
330
329
329
328
327
326

Tuesday 28

Waxing Gibbous 100%

20:53

03:36

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 OK
21 OK
22 OK
23 Good
00 Good

Sun - Rise: 05:25, Set: 21:01, Transit: 13:13. Moon - Rise: 20:53, Set: 03:36. Civil Dark: 21:42 - 04:44. Nautical Dark: 22:39 - 03:47. Astro Dark: 00:03 - 02:23

Total Clouds (% Sky Obscured)

51
60
65
65
74
71
68
84
94
91
92
82
64
71
88
77
75
67
59
44
45
28
6
0

Low Clouds (% Sky Obscured)

47
43
36
31
27
20
15
16
19
27
25
15
14
12
16
8
0
0
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

6
20
26
22
27
31
40
79
90
85
81
63
42
47
44
65
39
33
28
36
35
20
3
0

High Clouds (% Sky Obscured)

2
4
7
33
32
15
44
27
26
24
5
43
27
52
71
39
57
38
22
4
2
2
2
0

ISS Passover

Visibility (miles)

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

Chance of Frost

Temperature (°C)

16
16
16
16
15
15
17
18
20
22
23
25
26
27
28
28
27
26
25
23
21
20
19
18

Feels Like (°C)

17
17
17
17
17
16
18
18
19
21
22
24
25
27
27
26
25
24
23
21
22
21
20
19

Dew Point (°C)

16
16
15
15
15
15
15
15
14
13
12
11
10
9
8
7
6
5
5
7
10
12
11
11

Relative Humidity (%)

98
98
96
98
96
96
89
78
67
57
47
41
35
31
28
26
26
26
27
33
50
59
61
65

Pressure (mb)

1021
1020
1020
1020
1019
1020
1020
1020
1020
1020
1019
1019
1018
1018
1017
1017
1016
1016
1016
1016
1016
1016
1016
1016

Ozone (du)

324
324
323
323
322
320
320
319
318
318
318
319
319
319
319
319
318
320
321
321
321
322
324
325

Wednesday 29

Full Moon 100%

21:14

04:49

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

Sun - Rise: 05:27, Set: 21:00, Transit: 13:13. Moon - Rise: 21:14, Set: 04:49. Civil Dark: 21:41 - 04:46. Nautical Dark: 22:37 - 03:50. Astro Dark: 23:58 - 02:28

Total Clouds (% Sky Obscured)

0
0
7
6
2
1
0
0
15
20
35
37
34
57
56
41
57
33
24
16
8
21
61
68

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
10
12
22
22
19
21
25
17
38
22
17
11
3
13
21
30

Medium Clouds (% Sky Obscured)

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

High Clouds (% Sky Obscured)

0
0
7
5
2
1
0
0
0
0
0
0
2
16
10
7
2
1
1
3
5
6
25
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
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)

3
3
3
2
2
2
1
2
3
4
6
8
10
10
11
13
13
13
13
11
11
9
8
8

Chance of Frost

Temperature (°C)

16
15
15
15
14
14
16
19
22
25
26
28
29
29
30
30
29
28
26
24
21
19
18
17

Feels Like (°C)

18
17
17
17
16
16
18
21
25
27
27
28
28
28
26
25
25
25
24
23
20
19
18
16

Dew Point (°C)

10
10
10
10
10
9
8
9
8
8
7
7
6
4
3
1
2
4
7
9
11
12
13
14

Relative Humidity (%)

66
69
71
74
74
74
61
49
41
33
29
26
23
19
17
16
17
21
29
37
51
62
72
79

Pressure (mb)

1016
1016
1015
1015
1014
1014
1014
1014
1014
1014
1013
1013
1013
1012
1011
1011
1011
1011
1011
1011
1012
1012
1012
1013

Ozone (du)

327
328
329
329
329
327
326
325
326
325
326
329
327
325
324
324
327
328
329
328
328
329
326
327

Thursday 30

Waning Gibbous 100%

21:30

06:05

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 OK
22 OK
23 OK
00 OK

Sun - Rise: 05:28, Set: 20:58, Transit: 13:13. Moon - Rise: 21:30, Set: 06:05. Civil Dark: 21:39 - 04:47. Nautical Dark: 22:34 - 03:52. Astro Dark: 23:54 - 02:32

Total Clouds (% Sky Obscured)

78
88
82
78
78
89
96
97
98
94
90
86
89
95
100
100
100
100
75
50
25
25
20
15

Low Clouds (% Sky Obscured)

37
38
38
42
47
51
60
69
70
58
51
59
78
72
18
14
5
0
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

0
0
0
7
13
20
22
17
11
64
80
85
17
12
3
3
0
3
3
0
0
0
0
0

High Clouds (% Sky Obscured)

57
78
77
52
34
42
51
43
45
38
35
29
47
78
100
100
100
100
75
50
25
25
20
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
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
3
8
9
14
15
13
9
6
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
7
7
7
8
8
9
11
12
13
14
15
16
17
17
18
17
16
15
13
12
11
9
7

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

14
15
16
16
16
16
15
15
15
13
11
10
10
12
10
10
9
7
5
5
7
10
11
11

Relative Humidity (%)

87
89
95
96
98
98
90
83
72
61
51
43
43
49
43
42
42
39
37
42
55
70
80
90

Pressure (mb)

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

Ozone (du)

327
326
328
329
331
331
328
327
326
326
328
333
336
337
337
337
337
337
335
335
337
341
342
344

Friday 31

Waning Gibbous 98%

21:43

07:21

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

Sun - Rise: 05:30, Set: 20:56, Transit: 13:13. Moon - Rise: 21:43, Set: 07:21. Civil Dark: 21:37 - 04:49. Nautical Dark: 22:32 - 03:54. Astro Dark: 23:49 - 02:37

Total Clouds (% Sky Obscured)

10
10
5
7
18
21
26
33
38
45
59
60
53
45
32
29
27
26
24
20
17
11
6
0

Low Clouds (% Sky Obscured)

0
0
0
4
6
10
12
15
18
18
46
26
21
14
8
4
2
0
0
2
3
2
1
0

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
2
3
5
9
11
12
6
3
2
1
1
2
2
1
0
0
0
0

High Clouds (% Sky Obscured)

10
10
5
7
17
0
0
0
0
0
0
0
0
0
0
0
0
0
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)

5
5
4
3
3
3
3
4
5
6
7
8
8
9
11
12
13
14
15
13
11
9
8
6

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

11
10
10
10
10
11
14
15
17
18
19
19
21
21
21
21
22
22
22
16
16
16
15
14

Dew Point (°C)

11
11
10
10
10
10
10
9
8
8
7
6
5
3
2
1
2
3
4
5
6
7
8
8

Relative Humidity (%)

92
93
93
91
91
92
83
68
57
49
43
37
31
27
25
22
25
29
33
40
48
57
63
70

Pressure (mb)

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

Ozone (du)

344
345
347
348
348
348
349
355
356
356
356
358
359
358
357
357
357
356
356
354
352
351
350
350

Saturday 1

Waning Gibbous 94%

21:54

08:37

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

Sun - Rise: 05:31, Set: 20:55, Transit: 13:13. Moon - Rise: 21:54, Set: 08:37. Civil Dark: 21:35 - 04:51. Nautical Dark: 22:29 - 03:56. Astro Dark: 23:45 - 02:41

Total Clouds (% Sky Obscured)

1
1
2
15
29
34
44
49
57
53
48
48
52
52
49
46
39
39
32
24
26
26
26
26

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
8
19
37
27
18
9
13
17
21
22
20
18
15
9
0
0
0
0

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
3
6
5
4
2
0
13
28
38
30
20
6
17
24
26
26
26
26

High Clouds (% Sky Obscured)

0
1
1
9
14
21
14
3
2
3
4
15
30
30
35
29
14
9
5
9
14
21
26
26

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)

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

Chance of Frost

Temperature (°C)

12
11
10
10
10
11
11
14
16
18
20
21
22
22
23
23
23
22
22
20
18
16
15
14

Feels Like (°C)

14
9
10
10
10
9
9
11
12
13
14
15
16
20
20
18
18
19
19
18
17
17
16
14

Dew Point (°C)

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

Relative Humidity (%)

77
80
83
85
83
80
77
63
51
41
36
32
28
27
26
26
26
27
28
36
46
58
52
45

Pressure (mb)

1020
1020
1020
1020
1021
1021
1021
1021
1021
1021
1021
1021
1020
1020
1020
1020
1020
1019
1019
1020
1020
1021
1021
1021

Ozone (du)

349
346
344
341
339
336
334
331
327
323
322
320
318
318
318
317
318
318
319
321
323
325
330
334

Sunday 2

Waning Gibbous 88%

22:05

09:52

Sun - Rise: 05:33, Set: 20:53, Transit: 13:13. Moon - Rise: 22:05, Set: 09:52. Civil Dark: 21:33 - 04:52. Nautical Dark: 22:27 - 03:59. Astro Dark: 23:41 - 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 Swindon, Swindon, United Kingdom (51.56,-1.78)

Generated: 27/07/26 01:42:35. Forecast: 27/07/26 to 02/08/26. Timezone: UTC+1.00