Clear Outside v1.0 - International Weather Forecasts For Astronomers

Tuesday 21

First Quarter 53%

14:17

23:36

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

Sun - Rise: 05:15, Set: 21:11, Transit: 13:13. Moon - Rise: 14:17, Set: 23:36. Civil Dark: 21:54 - 04:32. Nautical Dark: 22:55 - 03:32. Astro Dark: N/A - 01:32

Total Clouds (% Sky Obscured)

11
8
6
3
2
4
2
0
1
4
23
53
61
63
68
56
75
73
61
73
62
62
48
54

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
3
15
44
51
49
37
21
28
30
29
19
35
31
15
22

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
15
51
30
47
47
33
32
26
29
29
25

High Clouds (% Sky Obscured)

0
0
0
3
2
4
2
0
1
0
7
3
3
0
0
0
3
6
3
49
62
24
5
38

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)

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

Chance of Frost

Temperature (°C)

16
15
15
14
13
12
12
14
16
18
20
21
23
23
24
25
25
25
25
25
24
22
21
19

Feels Like (°C)

15
14
14
14
13
13
12
14
15
17
19
21
22
23
23
24
24
24
24
24
24
20
18
17

Dew Point (°C)

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

Relative Humidity (%)

54
64
70
76
80
83
87
76
64
55
49
45
40
36
33
30
29
27
27
28
34
37
43
55

Pressure (mb)

1027
1027
1028
1028
1028
1029
1029
1029
1029
1029
1029
1029
1029
1028
1028
1028
1027
1027
1026
1026
1026
1026
1026
1027

Ozone (du)

332
332
332
332
332
331
333
333
331
331
330
330
328
324
322
321
322
322
322
322
323
324
327
327

Wednesday 22

Waxing Gibbous 63%

15:32

23:54

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

Sun - Rise: 05:17, Set: 21:10, Transit: 13:13. Moon - Rise: 15:32, Set: 23:54. Civil Dark: 21:52 - 04:34. Nautical Dark: 22:52 - 03:34. Astro Dark: 00:54 - 01:44

Total Clouds (% Sky Obscured)

35
28
35
41
44
44
38
48
42
49
98
100
100
100
100
74
52
32
32
32
63
68
67
51

Low Clouds (% Sky Obscured)

29
27
29
28
36
36
31
35
15
17
16
13
23
28
26
27
16
16
27
28
33
50
1
0

Medium Clouds (% Sky Obscured)

0
0
2
6
1
0
0
0
0
6
35
14
30
42
94
46
33
8
3
3
12
12
13
17

High Clouds (% Sky Obscured)

3
0
0
2
4
5
5
13
32
37
97
100
100
100
100
45
3
10
2
4
28
40
41
28

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)

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

Chance of Frost

Temperature (°C)

17
16
15
14
14
14
14
14
16
18
20
21
23
24
24
24
24
25
24
24
23
21
20
19

Feels Like (°C)

15
16
16
15
14
14
14
15
15
16
18
20
21
22
22
22
24
24
24
23
22
19
18
18

Dew Point (°C)

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

Relative Humidity (%)

64
75
82
86
90
93
93
80
69
62
53
47
41
39
34
31
29
29
30
31
36
50
52
65

Pressure (mb)

1027
1027
1027
1026
1026
1026
1026
1026
1026
1026
1026
1026
1025
1025
1024
1024
1023
1023
1023
1023
1023
1023
1023
1024

Ozone (du)

328
331
332
330
330
327
326
326
326
325
326
328
330
334
336
337
336
336
335
333
330
329
328
328

Thursday 23

Waxing Gibbous 72%

16:46

No Set

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 OK
23 Bad

Sun - Rise: 05:18, Set: 21:08, Transit: 13:13. Moon - Rise: 16:46, Set: No Set. Civil Dark: 21:51 - 04:35. Nautical Dark: 22:50 - 03:36. Astro Dark: 00:42 - 01:53

Total Clouds (% Sky Obscured)

77
86
94
88
100
99
100
100
78
98
76
95
87
92
89
96
86
61
87
93
89
62
44
64

Low Clouds (% Sky Obscured)

8
21
22
20
21
23
37
45
46
38
32
33
52
58
50
58
46
14
60
73
66
18
14
10

Medium Clouds (% Sky Obscured)

14
14
16
17
16
18
17
16
15
22
27
28
31
30
30
40
42
44
36
37
32
30
28
22

High Clouds (% Sky Obscured)

49
65
80
68
100
96
99
100
73
98
74
72
37
45
47
51
29
31
42
36
35
28
19
28

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

Chance of Frost

Temperature (°C)

18
17
16
15
14
14
14
15
17
19
21
22
23
24
25
25
26
26
26
25
24
22
21
20

Feels Like (°C)

18
16
15
14
14
14
14
15
17
19
20
22
21
22
23
23
24
23
25
24
22
19
19
18

Dew Point (°C)

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

Relative Humidity (%)

85
89
87
89
90
90
89
78
67
58
51
44
39
34
29
27
32
31
27
27
32
38
53
61

Pressure (mb)

1024
1024
1024
1024
1024
1024
1024
1024
1024
1024
1024
1024
1023
1023
1022
1022
1021
1021
1020
1020
1020
1020
1021
1021

Ozone (du)

325
323
322
321
321
320
320
318
318
317
317
316
315
315
314
314
313
313
313
313
313
314
315
315

Friday 24

Waxing Gibbous 81%

17:56

00:17

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

Sun - Rise: 05:19, Set: 21:07, Transit: 13:13. Moon - Rise: 17:56, Set: 00:17. Civil Dark: 21:49 - 04:37. Nautical Dark: 22:48 - 03:38. Astro Dark: 00:33 - 02:00

Total Clouds (% Sky Obscured)

59
43
85
100
100
88
70
43
44
48
43
45
50
51
55
53
43
41
38
48
53
100
94
52

Low Clouds (% Sky Obscured)

5
12
18
23
25
22
22
21
18
15
14
13
11
14
15
16
11
5
0
7
13
20
13
7

Medium Clouds (% Sky Obscured)

17
21
26
28
26
33
28
23
21
18
16
17
13
18
21
25
26
28
30
28
22
15
17
17

High Clouds (% Sky Obscured)

25
32
77
100
100
86
70
43
44
48
43
45
50
48
47
42
27
13
0
22
43
100
94
52

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)

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

Chance of Frost

Temperature (°C)

19
18
17
16
16
16
16
16
17
19
20
22
24
25
26
26
26
26
26
25
24
22
20
19

Feels Like (°C)

17
16
17
15
15
15
16
16
18
19
21
22
23
24
24
24
23
23
23
23
21
19
18
18

Dew Point (°C)

12
12
12
13
13
13
13
11
9
7
6
5
5
4
2
1
0
1
2
5
7
9
9
10

Relative Humidity (%)

63
68
73
78
81
83
82
72
58
46
38
33
29
24
21
19
18
19
21
26
33
43
47
56

Pressure (mb)

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

Ozone (du)

316
317
318
320
321
323
324
324
324
325
326
327
328
329
330
332
332
333
332
332
330
329
329
328

Saturday 25

Waxing Gibbous 88%

18:57

00:49

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
23 Bad

Sun - Rise: 05:21, Set: 21:06, Transit: 13:13. Moon - Rise: 18:57, Set: 00:49. Civil Dark: 21:48 - 04:39. Nautical Dark: 22:46 - 03:41. Astro Dark: 00:26 - 02:07

Total Clouds (% Sky Obscured)

55
90
80
74
85
92
100
100
100
100
100
100
100
100
100
100
100
99
98
99
100
100
100
100

Low Clouds (% Sky Obscured)

0
0
0
0
3
6
9
14
17
21
28
85
86
76
66
56
63
70
80
87
93
100
100
100

Medium Clouds (% Sky Obscured)

16
13
8
3
22
41
60
55
78
65
87
94
100
100
99
99
89
79
65
73
81
91
81
74

High Clouds (% Sky Obscured)

55
88
80
74
84
91
100
100
100
100
100
100
100
75
47
20
12
9
6
10
11
14
12
6

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
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain

Precipitation Probability (%)

0
0
0
0
0
0
0
0
0
0
10
14
18
33
30
21
18
16
13
69
95
95
94
72

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.4
0.7
0.9
0.6
0.4

Wind Speed/Direction (mph)

4
3
3
3
3
2
3
3
5
8
11
12
13
12
14
15
17
16
16
16
13
11
10
9

Chance of Frost

Temperature (°C)

18
17
16
15
14
14
15
16
17
19
20
20
19
19
19
19
18
18
17
17
17
16
16
16

Feels Like (°C)

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

Dew Point (°C)

10
9
9
9
9
10
10
9
8
6
5
8
9
9
7
5
3
4
6
7
10
13
15
15

Relative Humidity (%)

60
59
63
68
73
75
71
63
53
44
38
45
49
53
47
40
35
40
45
52
64
79
95
95

Pressure (mb)

1013
1013
1012
1012
1011
1011
1011
1010
1010
1009
1009
1008
1008
1008
1007
1007
1006
1006
1005
1005
1005
1004
1004
1004

Ozone (du)

331
331
330
330
330
331
332
333
338
337
335
335
337
338
339
340
341
340
339
338
341
343
346
347

Sunday 26

Waxing Gibbous 93%

19:48

01:33

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 OK
16 Bad
17 Bad
18 Bad
19 Bad
20 Bad
21 Bad
22 Bad
23 OK

Sun - Rise: 05:22, Set: 21:04, Transit: 13:13. Moon - Rise: 19:48, Set: 01:33. Civil Dark: 21:46 - 04:40. Nautical Dark: 22:44 - 03:43. Astro Dark: 00:20 - 02:13

Total Clouds (% Sky Obscured)

100
97
93
91
84
82
83
78
71
66
77
81
86
80
66
43
46
52
63
60
58
53
49
46

Low Clouds (% Sky Obscured)

100
97
93
91
84
82
83
74
66
57
45
36
28
24
20
20
20
20
22
28
38
44
36
28

Medium Clouds (% Sky Obscured)

69
66
62
59
44
30
24
31
30
25
27
28
35
27
23
18
20
19
18
16
11
7
8
8

High Clouds (% Sky Obscured)

0
0
3
1
4
8
16
14
10
0
0
0
0
0
0
0
12
30
47
34
16
6
8
10

ISS Passover

Visibility (miles)

9
9
8
6
4
6
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
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

37
33
30
28
29
28
27
20
13
0
1
1
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

96
96
96
96
95
95
93
93
79
69
59
50
42
36
34
32
32
33
34
35
42
50
60
64

Pressure (mb)

1003
1003
1003
1003
1002
1003
1004
1004
1005
1006
1007
1007
1007
1008
1008
1008
1009
1009
1010
1010
1011
1012
1013
1013

Ozone (du)

349
350
351
353
354
356
358
360
360
360
359
356
353
350
346
343
339
338
337
336
337
338
339
339

Monday 27

Waxing Gibbous 97%

20:26

02:29

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: 00:14 - 02:18

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: 21/07/26 00:22:35. Forecast: 21/07/26 to 27/07/26. Timezone: UTC+1.00