Clear Outside v1.0 - International Weather Forecasts For Astronomers

Thursday 31

Waxing Crescent 43%

13:18

23:00

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

Sun - Rise: 05:32, Set: 20:56, Transit: 13:13. Moon - Rise: 13:18, Set: 23:00. Civil Dark: 21:37 - 04:51. Nautical Dark: 22:31 - 03:57. Astro Dark: 23:48 - 02:42

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
58
60
28
0
0
0
0
35
7
32
91
55
48
42
59
67

Low Clouds (% Sky Obscured)

66
70
70
71
67
65
71
65
58
48
0
0
0
0
0
13
6
32
34
54
48
42
59
67

Medium Clouds (% Sky Obscured)

87
75
71
76
32
46
31
36
1
21
22
0
0
0
0
1
1
1
1
1
1
2
0
0

High Clouds (% Sky Obscured)

100
56
98
95
66
100
81
30
0
0
0
0
0
0
0
11
7
1
30
8
0
0
0
0

ISS Passover

Visibility (miles)

1
4
2
3
2
9
4
5
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
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

1
3
95
95
95
95
95
95
80
26
4
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Amount (mm)

0
0
1.7
1.2
0.9
1.1
0.9
0.9
0.5
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

9
8
10
9
8
7
8
9
9
10
9
9
9
10
10
10
10
9
9
9
9
9
11
12

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

18
18
16
16
15
14
13
12
13
12
11
11
11
10
10
10
10
9
9
9
9
8
8
7

Relative Humidity (%)

93
91
80
76
72
67
64
60
66
63
58
65
69
73
75
79
83
86
87
88
90
81
72
64

Pressure (mb)

1017
1017
1016
1016
1016
1016
1015
1015
1015
1015
1015
1016
1016
1017
1017
1018
1018
1018
1017
1017
1018
1018
1018
1018

Ozone (du)

321
324
322
323
326
331
332
335
337
335
331
328
326
327
327
326
325
325
324
327
328
331
332
333

Friday 1

First Quarter 52%

14:31

23:14

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

Sun - Rise: 05:33, Set: 20:54, Transit: 13:13. Moon - Rise: 14:31, Set: 23:14. Civil Dark: 21:35 - 04:53. Nautical Dark: 22:29 - 03:59. Astro Dark: 23:44 - 02:46

Total Clouds (% Sky Obscured)

67
62
59
58
70
53
63
52
48
18
0
0
16
57
49
42
58
52
100
100
100
100
86
82

Low Clouds (% Sky Obscured)

67
62
59
58
57
42
42
42
30
9
0
0
4
25
15
22
29
23
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

0
0
0
0
21
24
27
17
19
5
0
0
9
28
23
7
9
10
2
0
19
56
47
38

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
3
10
16
35
100
91
91
91
72
45

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
1
2
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)

13
12
12
12
13
14
13
13
13
13
11
8
8
7
7
6
5
4
4
4
4
4
5
6

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

58
52
46
40
39
41
40
39
42
45
52
61
64
70
71
77
83
87
88
90
90
81
71
62

Pressure (mb)

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

Ozone (du)

334
334
333
331
333
336
337
336
333
330
326
323
321
320
318
317
316
315
314
315
315
315
316
317

Saturday 2

Waxing Gibbous 62%

15:45

23:34

10 Bad
11 Bad
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad
17 Bad
18 OK
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

Sun - Rise: 05:35, Set: 20:53, Transit: 13:13. Moon - Rise: 15:45, Set: 23:34. Civil Dark: 21:33 - 04:55. Nautical Dark: 22:26 - 04:02. Astro Dark: 23:40 - 02:50

Total Clouds (% Sky Obscured)

100
100
100
91
75
92
69
53
36
55
44
56
98
100
100
97
88
100
100
99
100
100
99
99

Low Clouds (% Sky Obscured)

6
30
53
91
75
84
69
53
33
22
11
23
29
38
48
49
60
56
53
75
72
86
92
95

Medium Clouds (% Sky Obscured)

40
40
35
0
0
11
8
4
4
15
12
19
21
17
19
52
66
87
75
36
42
85
99
98

High Clouds (% Sky Obscured)

92
83
82
8
2
3
10
1
5
1
1
56
98
100
100
27
13
100
100
51
100
72
47
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
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
Light Rain
None
None
None

Precipitation Probability (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
7
5
1
1
31
66
37
37
40

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.4
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

7
6
5
4
3
2
2
2
4
9
11
12
12
12
13
13
13
13
13
14
15
14
14
15

Relative Humidity (%)

55
48
43
38
33
30
29
30
34
51
62
73
77
84
87
89
87
89
92
96
98
90
85
85

Pressure (mb)

1019
1019
1019
1019
1019
1018
1018
1018
1018
1018
1018
1018
1018
1019
1019
1018
1018
1018
1017
1017
1017
1017
1017
1017

Ozone (du)

317
315
314
313
314
312
312
310
308
308
306
305
304
304
303
302
301
301
302
301
302
301
302
304

Sunday 3

Waxing Gibbous 71%

16:58

00:01

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
06 Bad
07 Bad
08 Bad
09 Bad

Sun - Rise: 05:36, Set: 20:51, Transit: 13:13. Moon - Rise: 16:58, Set: 00:01. Civil Dark: 21:31 - 04:56. Nautical Dark: 22:24 - 04:04. Astro Dark: 23:35 - 02:54

Total Clouds (% Sky Obscured)

99
100
100
100
100
100
100
95
100
100
100
100
92
85
75
77
82
88
90
92
95
96
98
100

Low Clouds (% Sky Obscured)

91
86
81
74
68
64
41
21
0
0
0
0
0
0
0
0
0
0
0
0
15
18
26
34

Medium Clouds (% Sky Obscured)

42
66
18
49
6
5
17
30
45
40
34
27
33
58
43
68
72
85
79
77
82
92
98
100

High Clouds (% Sky Obscured)

43
70
99
99
93
98
92
94
100
100
100
100
76
52
35
43
51
61
70
75
80
87
85
100

ISS Passover

Visibility (miles)

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

Precipitation Probability (%)

44
41
32
45
37
32
53
50
34
2
9
2
0
0
0
0
1
1
0
1
0
3
5
2

Precipitation Amount (mm)

0
0
0
0
0
0
0.3
0.3
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

13
14
15
15
16
15
16
15
14
11
9
7
6
5
4
4
3
4
4
5
6
6
8
11

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

88
83
86
85
86
91
88
84
81
81
85
90
90
89
87
92
93
93
93
93
95
92
90
87

Pressure (mb)

1017
1017
1017
1017
1017
1017
1017
1017
1017
1018
1018
1019
1019
1019
1019
1019
1019
1019
1018
1018
1018
1018
1017
1017

Ozone (du)

305
305
307
308
310
312
311
310
310
308
308
309
307
306
303
300
299
296
295
293
292
291
292
292

Monday 4

Waxing Gibbous 80%

18:06

00:39

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 Good
01 Good
02 OK
03 OK
04 OK
05 OK
06 OK
07 Bad
08 Bad
09 Bad

Sun - Rise: 05:38, Set: 20:49, Transit: 13:13. Moon - Rise: 18:06, Set: 00:39. Civil Dark: 21:29 - 04:58. Nautical Dark: 22:22 - 04:06. Astro Dark: 23:31 - 02:58

Total Clouds (% Sky Obscured)

100
100
100
100
99
100
99
98
95
73
54
37
26
14
4
12
20
28
30
32
33
45
58
71

Low Clouds (% Sky Obscured)

44
44
44
65
76
87
80
73
66
57
47
37
26
14
4
12
20
27
30
32
33
45
58
71

Medium Clouds (% Sky Obscured)

100
100
98
98
72
71
90
60
58
41
19
0
0
0
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

98
97
87
86
85
70
47
25
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
6
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
Very Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

4
4
0
10
17
26
69
92
95
88
70
6
8
6
0
0
0
0
0
0
0
0
0
0

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

13
14
16
20
20
25
26
25
25
23
20
16
15
16
15
15
15
15
14
14
13
12
13
14

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

83
77
63
38
41
40
67
82
78
64
62
68
69
71
74
76
77
77
79
79
79
79
72
67

Pressure (mb)

1016
1015
1014
1013
1012
1010
1010
1010
1010
1010
1012
1013
1015
1016
1016
1017
1018
1019
1019
1020
1021
1021
1022
1023

Ozone (du)

291
293
294
294
295
297
297
300
301
302
303
304
308
312
315
314
314
314
313
313
313
313
313
312

Tuesday 5

Waxing Gibbous 87%

19:05

01:32

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

Sun - Rise: 05:39, Set: 20:48, Transit: 13:13. Moon - Rise: 19:05, Set: 01:32. Civil Dark: 21:27 - 05:00. Nautical Dark: 22:19 - 04:08. Astro Dark: 23:27 - 03:01

Total Clouds (% Sky Obscured)

68
65
57
58
58
59
42
22
3
3
2
1
3
5
6
11
11
14
13
11
11
16
22
25

Low Clouds (% Sky Obscured)

66
60
57
57
57
52
34
19
2
2
1
0
0
0
0
0
0
0
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
7
11
14
10
6
1
1
1
1

High Clouds (% Sky Obscured)

0
0
0
1
1
2
2
2
2
1
0
1
1
0
1
2
4
6
8
9
11
16
22
25

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)

16
16
16
16
16
16
17
15
13
12
10
7
5
4
3
2
2
2
2
1
1
1
2
3

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

10
10
11
11
15
14
14
15
15
16
15
16
16
15
15
14
10
11
11
11
10
10
13
14

Dew Point (°C)

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

Relative Humidity (%)

60
55
50
45
41
37
34
35
37
39
46
53
64
69
72
77
79
83
84
81
77
76
64
55

Pressure (mb)

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

Ozone (du)

312
311
311
310
309
307
306
305
305
305
304
303
302
300
299
297
297
296
295
295
295
295
296
297

Wednesday 6

Waxing Gibbous 94%

19:50

02:41

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 Bad
23 Bad
00 Bad
01 Bad
02 Bad
03 Bad
04 Bad
05 Bad
06 Bad

Sun - Rise: 05:41, Set: 20:46, Transit: 13:12. Moon - Rise: 19:50, Set: 02:41. Civil Dark: 21:25 - 05:02. Nautical Dark: 22:17 - 04:11. Astro Dark: 23:24 - 03:05

Total Clouds (% Sky Obscured)

48
73
99
100
100
100
100
100
100
97
95
92
87
79
68
70
69
69
60
56
51

Low Clouds (% Sky Obscured)

19
37
56
59
62
65
43
22
0
0
0
0
5
11
16
33
51
68
60
56
51

Medium Clouds (% Sky Obscured)

3
5
9
19
32
42
48
57
64
61
58
59
49
41
39
38
43
56
56
56
46

High Clouds (% Sky Obscured)

48
73
98
99
99
100
100
100
100
73
49
30
20
11
1
2
3
4
2
1
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

Fog (%)

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
Light Rain
Very Light Rain
Very Light Rain
Very Light Rain

Precipitation Probability (%)

0
0
0
0
0
0
0
0
0
1
2
2
3
1
0
20
37
60
55
54
57

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

6
6
5
5
4
4
4
4
4
4
5
6
7
7
7
7
7
7
7
6
6

Relative Humidity (%)

47
43
40
37
34
32
29
30
31
31
38
46
56
58
60
63
64
64
65
62
60

Pressure (mb)

1026
1026
1025
1025
1024
1024
1023
1023
1023
1022
1022
1022
1022
1022
1021
1021
1021
1021
1020
1020
1020

Ozone (du)

297
297
297
297
297
296
295
296
296
296
296
297
297
298
298
299
300
302
304
304
304

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

Generated: 31/07/25 10:00:15. Forecast: 31/07/25 to 06/08/25. Timezone: UTC+1.00