Clear Outside v1.0 - International Weather Forecasts For Astronomers

Thursday 18

Waning Crescent 6%

03:46

18:18

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
10 Bad
11 Bad

Sun - Rise: 06:49, Set: 19:13, Transit: 13:00. Moon - Rise: 03:46, Set: 18:18. Civil Dark: 19:46 - 06:16. Nautical Dark: 20:26 - 05:36. Astro Dark: 21:08 - 04:55

Total Clouds (% Sky Obscured)

99
92
82
76
96
64
100
78
98
99
100
100
100
100
99
98
88
88
72
82
71
74
61
62

Low Clouds (% Sky Obscured)

94
71
76
73
52
53
64
67
71
74
74
71
80
77
72
69
67
72
69
81
70
73
61
56

Medium Clouds (% Sky Obscured)

1
2
0
0
0
0
1
27
54
0
0
3
53
53
33
47
1
1
25
4
3
7
35
10

High Clouds (% Sky Obscured)

30
24
29
76
95
64
100
68
94
97
100
100
100
98
97
94
88
88
70
66
71
70
61
62

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
5
9
3
5
3
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
16
15
14
16
16
14
13
12
11
11
11
11
11
11
10
9
7
7
6
7
9
10
11

Chance of Frost

Temperature (°C)

19
20
21
20
20
19
18
17
17
16
16
16
15
15
15
15
15
15
15
15
15
17
18
19

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

77
76
69
69
72
73
80
86
93
95
96
95
96
96
96
96
96
96
95
96
93
83
77
70

Pressure (mb)

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

Ozone (du)

260
261
262
263
263
262
260
259
260
259
259
258
257
258
258
258
259
260
261
260
259
259
259
260

Friday 19

Waning Crescent 2%

05:04

18:32

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
10 Bad
11 Bad

Sun - Rise: 06:51, Set: 19:11, Transit: 13:00. Moon - Rise: 05:04, Set: 18:32. Civil Dark: 19:44 - 06:17. Nautical Dark: 20:24 - 05:38. Astro Dark: 21:05 - 04:57

Total Clouds (% Sky Obscured)

90
100
100
96
100
100
100
100
100
100
100
100
97
100
100
83
97
97
99
100
100
100
100
98

Low Clouds (% Sky Obscured)

49
62
53
52
55
74
68
62
57
42
69
44
38
41
41
51
65
71
72
65
68
77
73
78

Medium Clouds (% Sky Obscured)

6
1
1
0
0
0
37
19
0
0
21
9
2
2
2
17
0
43
40
26
23
45
31
33

High Clouds (% Sky Obscured)

89
95
85
49
74
57
93
100
100
82
76
59
96
100
100
59
91
83
94
100
100
100
100
76

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
3
21
38
81
92
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
15
16
17
21
4
0
0
0
0
0
0
3
14

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

12
10
9
9
9
9
9
10
10
10
10
10
11
12
11
12
11
11
11
11
11
10
11
11

Relative Humidity (%)

60
51
45
44
45
48
55
66
70
73
76
80
86
90
89
90
87
86
84
83
79
73
72
67

Pressure (mb)

1017
1017
1016
1016
1015
1015
1015
1015
1015
1015
1015
1015
1015
1014
1014
1013
1013
1012
1012
1011
1011
1011
1011
1010

Ozone (du)

260
259
261
264
265
265
265
266
266
266
266
265
265
265
266
266
267
266
265
264
265
263
262
262

Saturday 20

Waning Crescent 2%

06:19

18:43

12 Bad
13 Bad
14 Bad
15 Bad
16 Bad
17 Bad
18 Bad
19 Bad
20 OK
21 OK
22 Bad
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

Sun - Rise: 06:52, Set: 19:09, Transit: 13:00. Moon - Rise: 06:19, Set: 18:43. Civil Dark: 19:42 - 06:19. Nautical Dark: 20:21 - 05:40. Astro Dark: 21:02 - 04:59

Total Clouds (% Sky Obscured)

100
100
100
100
88
80
90
60
33
40
86
81
71
63
47
85
78
78
92
72
70
60
75
70

Low Clouds (% Sky Obscured)

88
100
57
74
75
67
90
57
33
40
81
77
71
60
45
85
74
69
86
57
60
52
68
68

Medium Clouds (% Sky Obscured)

28
46
32
75
88
63
0
3
0
0
0
0
0
9
9
0
3
16
27
22
15
9
8
8

High Clouds (% Sky Obscured)

100
100
99
86
1
1
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 (%)

8
23
18
23
13
12
12
15
0
0
3
5
15
1
2
4
3
9
14
3
4
4
22
11

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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

15
15
15
14
14
14
14
14
10
8
6
5
4
5
5
7
5
5
5
4
5
6
7
7

Dew Point (°C)

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

Relative Humidity (%)

63
55
51
49
50
57
64
72
75
72
80
77
73
75
76
81
72
76
77
67
67
68
66
63

Pressure (mb)

1009
1009
1008
1007
1006
1005
1005
1005
1006
1006
1006
1006
1006
1006
1006
1006
1006
1006
1006
1007
1008
1009
1010
1010

Ozone (du)

262
263
264
264
265
265
266
272
276
278
280
281
281
282
286
289
290
291
293
296
298
302
303
302

Sunday 21

New Moon 0%

07:32

18:54

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
10 Bad
11 Bad

Sun - Rise: 06:54, Set: 19:06, Transit: 12:59. Moon - Rise: 07:32, Set: 18:54. Civil Dark: 19:39 - 06:21. Nautical Dark: 20:19 - 05:41. Astro Dark: 21:00 - 05:01

Total Clouds (% Sky Obscured)

92
95
73
80
76
91
77
97
97
97
94
91
87
82
76
70
61
54
49
53
57
61
61
60

Low Clouds (% Sky Obscured)

84
86
73
80
76
78
71
62
56
53
45
38
33
39
45
47
48
52
49
50
49
47
54
55

Medium Clouds (% Sky Obscured)

7
20
31
42
46
42
45
96
96
85
90
52
47
42
35
55
52
41
30
52
57
21
9
7

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
5
5
5
4
3
5
8
20
17
1
3
6
1
1
7
14

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
1
9
9
9
6
9
9
9
9
9
9
9
6
9
9
6

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
Light Rain
Light Rain
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

18
8
5
5
10
15
40
80
80
47
35
31
28
30
27
29
30
34
28
29
45
35
32
35

Precipitation Amount (mm)

0
0
0
0
0
0
0
0.8
0.7
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

17
16
16
17
16
14
14
12
11
10
8
7
7
8
9
9
9
8
10
10
11
12
14
14

Chance of Frost

Temperature (°C)

13
13
13
13
13
13
12
11
10
10
10
10
9
9
9
8
8
8
8
8
9
9
10
11

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

59
59
54
52
55
61
68
78
90
93
93
95
95
95
95
95
95
95
90
91
93
95
91
88

Pressure (mb)

1010
1011
1011
1011
1011
1011
1011
1012
1012
1013
1013
1013
1013
1014
1014
1014
1015
1015
1016
1017
1018
1018
1019
1019

Ozone (du)

303
302
304
305
306
306
309
309
309
311
312
311
311
312
313
312
313
313
314
315
315
316
318
317

Monday 22

Waxing Crescent 1%

08:44

19:04

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

Sun - Rise: 06:55, Set: 19:04, Transit: 12:59. Moon - Rise: 08:44, Set: 19:04. Civil Dark: 19:37 - 06:22. Nautical Dark: 20:16 - 05:43. Astro Dark: 20:57 - 05:02

Total Clouds (% Sky Obscured)

60
57
54
53
37
25
14
11
8
0
3
6
10
16
21
27
51
76
100
95
95
91
84
82

Low Clouds (% Sky Obscured)

56
52
49
43
31
19
14
6
3
0
2
4
5
13
20
26
24
21
18
29
40
52
53
54

Medium Clouds (% Sky Obscured)

30
23
10
13
7
4
2
0
0
0
0
0
0
0
0
0
12
24
22
12
8
8
7
10

High Clouds (% Sky Obscured)

14
4
1
0
0
0
0
0
0
0
1
3
4
3
2
2
18
24
34
28
31
40
48
29

ISS Passover

Visibility (miles)

6
4
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 (%)

39
31
20
7
5
4
1
1
0
0
0
0
0
0
0
0
0
0
0
1
1
0
3
2

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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

79
74
81
76
76
75
77
75
77
77
78
79
84
85
85
85
86
85
83
82
76
69
63
61

Pressure (mb)

1019
1020
1020
1020
1020
1020
1021
1021
1022
1022
1022
1023
1023
1023
1023
1023
1023
1023
1023
1023
1023
1024
1024
1024

Ozone (du)

316
315
312
311
310
309
308
307
307
307
307
306
306
305
304
304
303
303
302
302
302
301
301
300

Tuesday 23

Waxing Crescent 3%

09:57

19:14

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
10 Bad
11 Bad

Sun - Rise: 06:57, Set: 19:02, Transit: 12:59. Moon - Rise: 09:57, Set: 19:14. Civil Dark: 19:35 - 06:24. Nautical Dark: 20:14 - 05:45. Astro Dark: 20:55 - 05:04

Total Clouds (% Sky Obscured)

89
90
92
93
99
99
99
99
99
100
97
93
89
76
79
72
70
77
75
82
83
90
95
95

Low Clouds (% Sky Obscured)

53
63
70
75
72
74
73
79
87
94
94
93
89
76
79
72
70
77
75
82
83
90
95
95

Medium Clouds (% Sky Obscured)

17
22
23
29
24
25
25
14
13
15
18
24
27
27
31
41
34
31
29
19
14
10
11
18

High Clouds (% Sky Obscured)

4
5
6
6
29
51
73
79
89
90
90
93
89
76
79
72
65
41
13
9
6
3
22
41

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
Very Light Rain
Very Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Very Light Rain
None
None
None
None

Precipitation Probability (%)

1
23
25
23
27
30
34
31
30
30
43
52
56
64
74
85
79
74
71
59
45
27
26
21

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0.2
0.3
0.4
0.6
0.5
0.4
0.4
0.3
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

11
12
12
13
13
12
11
10
10
10
10
9
9
9
9
9
9
8
8
8
9
9
10
11

Feels Like (°C)

6
6
10
10
10
10
10
11
7
8
8
9
9
9
8
8
8
8
8
9
7
7
6
7

Dew Point (°C)

3
4
4
4
3
3
3
3
3
3
4
4
4
4
5
5
5
6
6
6
5
5
4
3

Relative Humidity (%)

58
57
55
54
52
54
56
59
61
63
66
68
70
73
75
77
80
82
84
85
78
72
65
58

Pressure (mb)

1023
1023
1023
1023
1022
1023
1023
1023
1023
1023
1024
1024
1023
1023
1023
1024
1024
1024
1024
1024
1024
1024
1025
1025

Ozone (du)

300
300
300
299
299
299
299
300
300
300
299
300
300
300
300
300
300
300
300
301
300
299
299
298

Wednesday 24

Waxing Crescent 7%

11:10

19:27

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: 06:59, Set: 18:59, Transit: 12:58. Moon - Rise: 11:10, Set: 19:27. Civil Dark: 19:32 - 06:26. Nautical Dark: 20:12 - 05:47. Astro Dark: 20:52 - 05:06

Total Clouds (% Sky Obscured)

95
95
95
96
96
96
96
96
97
90
81
75
68
67
62
56
53
54
55

Low Clouds (% Sky Obscured)

92
85
78
71
75
78
79
72
66
60
62
65
68
67
62
56
53
54
55

Medium Clouds (% Sky Obscured)

25
25
30
30
23
21
15
12
9
15
20
25
35
35
40
55
53
54
45

High Clouds (% Sky Obscured)

61
63
75
81
88
87
66
66
61
52
51
51
65
67
62
56
53
54
55

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
Very Light Rain

Precipitation Probability (%)

10
20
25
28
24
21
12
19
16
10
17
17
9
21
28
32
42
50
58

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

8
8
14
14
13
13
14
14
10
10
10
10
11
10
9
9
9
9
9

Dew Point (°C)

3
3
4
4
4
4
5
5
5
5
5
4
4
4
4
4
5
5
5

Relative Humidity (%)

54
50
49
50
49
53
58
64
65
66
67
68
70
70
73
74
77
78
79

Pressure (mb)

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

Ozone (du)

298
298
298
298
298
298
297
297
297
296
296
294
293
292
292
292
292
292
292

Forecast for Marlborough, Wiltshire, United Kingdom (51.42,-1.73)

Generated: 18/09/25 12:40:03. Forecast: 18/09/25 to 24/09/25. Timezone: UTC+1.00