Clear Outside v1.0 - International Weather Forecasts For Astronomers

Thursday 18

Waning Crescent 6%

03:46

18:32

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

Sun - Rise: 06:49, Set: 19:11, Transit: 13:00. Moon - Rise: 03:46, Set: 18:32. Civil Dark: 19:44 - 06:16. Nautical Dark: 20:24 - 05:36. Astro Dark: 21:05 - 04:55

Total Clouds (% Sky Obscured)

88
91
93
95
84
71
75
69
79
62
77
47
42
56
51
52
95
95
100
100
98
95
82
57

Low Clouds (% Sky Obscured)

68
68
69
74
66
67
75
69
79
62
77
47
37
42
49
46
59
67
63
69
67
39
48
49

Medium Clouds (% Sky Obscured)

7
30
29
21
24
21
1
14
1
2
1
3
1
1
1
1
0
0
0
0
0
0
5
0

High Clouds (% Sky Obscured)

88
91
93
81
77
68
70
60
55
27
22
47
42
56
43
52
89
92
100
100
66
25
20
12

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
27
98
34
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

95
95
95
95
98
96
96
95
95
95
83
76
68
58
50
45
43
45
51
57
69
78
79
83

Pressure (mb)

1020
1020
1020
1020
1019
1019
1018
1018
1018
1018
1018
1018
1018
1017
1016
1016
1016
1015
1015
1015
1015
1015
1015
1015

Ozone (du)

258
257
257
258
257
258
257
257
256
256
255
254
255
255
254
255
259
261
261
260
261
262
263
263

Friday 19

Waning Crescent 2%

05:04

18:43

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

Sun - Rise: 06:51, Set: 19:09, Transit: 13:00. Moon - Rise: 05:04, Set: 18:43. Civil Dark: 19:42 - 06:17. Nautical Dark: 20:21 - 05:38. Astro Dark: 21:02 - 04:57

Total Clouds (% Sky Obscured)

87
84
65
62
61
98
100
100
100
100
100
100
100
97
100
100
100
95
84
45
49
0
0
31

Low Clouds (% Sky Obscured)

42
49
62
62
61
62
77
71
81
71
77
67
96
87
89
100
100
91
56
45
49
0
0
31

Medium Clouds (% Sky Obscured)

0
3
5
30
33
39
2
21
9
39
64
69
86
77
79
94
92
77
74
0
0
0
0
0

High Clouds (% Sky Obscured)

21
72
65
62
61
96
99
100
100
100
100
100
100
34
71
89
100
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
5
5
5
2
1
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
Light Rain
None
Very Light Rain
Light Rain
Light Rain
Light Rain
None
None
None
None
None
None
None

Precipitation Probability (%)

0
0
0
0
0
0
0
0
0
3
8
60
31
71
93
86
81
61
54
30
6
1
0
0

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0.4
0
0.3
0.7
0.6
0.4
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

5
4
4
5
5
6
6
6
7
8
10
13
11
14
13
13
15
15
16
16
14
12
10
9

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

15
15
13
12
12
12
12
12
12
13
12
13
13
14
13
13
12
11
10
7
7
7
8
8

Dew Point (°C)

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

Relative Humidity (%)

86
87
87
87
89
90
92
95
95
95
87
82
78
74
72
75
68
80
82
86
90
90
88
88

Pressure (mb)

1015
1014
1014
1013
1013
1012
1011
1011
1011
1010
1010
1010
1009
1009
1008
1008
1007
1007
1007
1007
1008
1010
1010
1011

Ozone (du)

263
263
263
264
265
265
265
264
265
264
265
265
265
265
265
267
269
269
279
282
284
288
289
292

Saturday 20

Waning Crescent 0%

06:19

18:54

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

Sun - Rise: 06:52, Set: 19:06, Transit: 12:59. Moon - Rise: 06:19, Set: 18:54. Civil Dark: 19:39 - 06:19. Nautical Dark: 20:19 - 05:40. Astro Dark: 21:00 - 04:59

Total Clouds (% Sky Obscured)

39
54
57
53
59
61
90
92
74
95
89
91
93
94
98
77
69
65
25
25
30
43
55
51

Low Clouds (% Sky Obscured)

39
54
57
50
59
61
89
92
74
95
83
80
79
79
96
70
58
65
25
25
30
43
52
44

Medium Clouds (% Sky Obscured)

0
0
0
1
0
0
6
13
16
74
83
73
33
26
24
73
69
65
25
25
30
43
55
51

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
13
13
18
18
1

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
Very Light Rain
Very Light Rain
None

Precipitation Probability (%)

0
0
1
6
11
10
25
32
17
20
14
14
18
15
10
13
13
13
14
33
32
54
61
52

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.2
0.3
0

Wind Speed/Direction (mph)

7
7
7
6
6
5
3
3
5
8
10
12
13
13
13
14
14
13
14
13
11
10
10
10

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

93
95
93
91
93
95
95
96
96
95
85
76
69
64
59
58
56
59
62
59
60
61
66
64

Pressure (mb)

1011
1012
1012
1012
1013
1013
1013
1014
1014
1015
1016
1017
1017
1018
1018
1018
1018
1018
1019
1020
1020
1021
1022
1022

Ozone (du)

296
299
299
297
297
299
302
304
306
307
307
308
310
310
311
312
312
313
313
315
315
316
316
316

Sunday 21

New Moon 1%

07:32

19:04

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

Sun - Rise: 06:54, Set: 19:04, Transit: 12:59. Moon - Rise: 07:32, Set: 19:04. Civil Dark: 19:37 - 06:21. Nautical Dark: 20:16 - 05:41. Astro Dark: 20:57 - 05:01

Total Clouds (% Sky Obscured)

47
27
34
22
4
12
22
31
31
29
26
23
21
31
35
38
35
34
33
32
21
11
1
3

Low Clouds (% Sky Obscured)

33
13
8
3
0
12
22
31
31
29
26
23
21
31
35
38
35
34
33
31
20
11
1
3

Medium Clouds (% Sky Obscured)

33
16
6
3
3
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

0
1
0
0
0
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 (%)

38
14
4
1
0
0
0
0
0
0
0
0
2
1
0
0
0
0
0
0
1
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

3
4
4
5
4
3
2
1
1
1
1
1
1
1
1
1
1
1
0
1
2
3
3
3

Relative Humidity (%)

66
72
75
82
78
73
71
70
70
67
60
55
50
46
45
43
42
40
40
46
54
66
68
69

Pressure (mb)

1023
1023
1023
1024
1024
1024
1025
1025
1025
1026
1027
1027
1027
1027
1027
1027
1026
1026
1027
1027
1027
1028
1028
1029

Ozone (du)

316
316
317
318
317
317
319
320
318
317
317
317
316
314
313
311
310
309
308
308
307
306
305
304

Monday 22

Waxing Crescent 3%

08:44

19:14

23 Good
00 Good
01 OK
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

Sun - Rise: 06:55, Set: 19:02, Transit: 12:59. Moon - Rise: 08:44, Set: 19:14. Civil Dark: 19:35 - 06:22. Nautical Dark: 20:14 - 05:43. Astro Dark: 20:55 - 05:02

Total Clouds (% Sky Obscured)

6
8
27
46
64
83
91
100
100
100
100
100
98
95
99
99
100
100
100
100
97
96
92
92

Low Clouds (% Sky Obscured)

6
8
27
45
64
66
66
60
60
57
54
48
42
36
42
49
53
55
55
54
62
70
78
77

Medium Clouds (% Sky Obscured)

0
0
2
2
3
30
37
37
49
68
80
89
82
61
56
58
67
61
55
37
24
15
10
8

High Clouds (% Sky Obscured)

0
0
1
1
2
25
51
72
67
67
76
57
35
12
19
28
31
29
25
30
25
30
40
70

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
1
1
0
8
9
5
20
25
24
35
42
50
50

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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

3
3
4
5
5
5
5
4
4
3
3
3
2
2
1
1
1
1
2
2
3
4
5
6

Relative Humidity (%)

71
77
84
88
91
93
91
88
83
77
68
60
53
48
43
43
43
41
47
52
58
63
68
74

Pressure (mb)

1029
1028
1028
1028
1028
1028
1028
1028
1028
1028
1028
1028
1027
1027
1026
1026
1026
1025
1025
1025
1025
1025
1025
1026

Ozone (du)

303
302
302
303
302
302
302
302
302
302
302
303
302
302
301
301
302
302
302
302
303
302
302
302

Tuesday 23

Waxing Crescent 7%

09:57

19:27

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

Sun - Rise: 06:57, Set: 18:59, Transit: 12:58. Moon - Rise: 09:57, Set: 19:27. Civil Dark: 19:32 - 06:24. Nautical Dark: 20:12 - 05:45. Astro Dark: 20:52 - 05:04

Total Clouds (% Sky Obscured)

96
100
99
99
98
100
100
95
91
86
82
82
88
100
95
94
91
94
98
100
100
100
100
99

Low Clouds (% Sky Obscured)

75
75
73
71
68
65
64
62
58
51
44
56
72
88
88
89
90
90
88
86
88
89
91
92

Medium Clouds (% Sky Obscured)

11
20
23
21
23
21
23
25
15
15
20
20
25
25
24
28
37
33
33
34
24
20
15
15

High Clouds (% Sky Obscured)

80
80
85
90
90
90
90
90
90
86
82
82
88
95
95
94
91
90
90
75
73
72
72
68

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 (%)

52
56
49
35
8
11
12
1
13
16
15
27
29
25
24
22
19
21
20
10
32
31
24
23

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

9
8
7
8
8
8
8
8
8
6
6
6
6
6
7
7
7
6
7
8
9
6
7
7

Dew Point (°C)

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

Relative Humidity (%)

76
77
78
83
87
91
88
88
87
76
65
56
59
63
66
58
52
46
50
53
57
62
69
76

Pressure (mb)

1025
1025
1025
1025
1025
1025
1025
1025
1025
1025
1025
1025
1025
1025
1025
1025
1024
1024
1024
1025
1025
1025
1025
1025

Ozone (du)

302
302
302
302
303
304
304
305
305
305
305
305
305
306
306
306
306
307
306
305
305
304
304
304

Wednesday 24

Waxing Crescent 13%

11:10

19:42

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

Sun - Rise: 06:59, Set: 18:57, Transit: 12:58. Moon - Rise: 11:10, Set: 19:42. Civil Dark: 19:30 - 06:26. Nautical Dark: 20:09 - 05:47. Astro Dark: 20:50 - 05:06

Total Clouds (% Sky Obscured)

98
97
97
96
95
96
96
96
96
95
85
75
70
65
66
62
58
56
59
61

Low Clouds (% Sky Obscured)

93
94
93
91
90
90
90
86
81
75
70
55
45
35
46
59
58
56
59
61

Medium Clouds (% Sky Obscured)

20
25
25
30
30
25
25
20
15
10
15
20
25
35
35
40
55
55
55
45

High Clouds (% Sky Obscured)

64
60
65
80
90
95
92
73
70
63
50
50
50
65
66
62
58
56
59
61

ISS Passover

Visibility (miles)

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

Precipitation Type

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

Precipitation Probability (%)

24
28
29
30
26
34
38
40
36
32
29
20
21
33
32
42
56
52
51
46

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.3
0.2
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

8
9
9
6
7
8
7
7
7
6
7
7
8
9
9
14
13
12
13
14

Dew Point (°C)

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

Relative Humidity (%)

81
87
91
93
93
93
95
93
94
84
76
69
61
55
48
47
45
43
48
56

Pressure (mb)

1025
1026
1026
1026
1026
1026
1026
1025
1025
1026
1026
1026
1025
1025
1025
1025
1024
1024
1024
1024

Ozone (du)

304
304
304
304
303
303
302
301
300
300
299
299
299
298
298
298
298
298
297
296

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

Generated: 18/09/25 23:55:01. Forecast: 18/09/25 to 24/09/25. Timezone: UTC+1.00