Clear Outside v1.0 - International Weather Forecasts For Astronomers

Thursday 18

Waning Crescent 12%

03:41

18:15

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

Sun - Rise: 06:45, Set: 19:09, Transit: 12:56. Moon - Rise: 03:41, Set: 18:15. Civil Dark: 19:43 - 06:11. Nautical Dark: 20:23 - 05:32. Astro Dark: 21:05 - 04:50

Total Clouds (% Sky Obscured)

100
94
95
90
85
99
100
97
99
73
56
63
100
100
100
100
100
100
87
83
77
75
83
82

Low Clouds (% Sky Obscured)

82
77
86
83
84
76
66
64
63
65
44
62
55
59
67
75
78
84
76
75
70
70
70
80

Medium Clouds (% Sky Obscured)

3
3
2
12
3
4
4
0
2
4
9
56
38
14
20
18
5
4
19
4
24
19
50
65

High Clouds (% Sky Obscured)

12
10
3
7
60
56
43
37
38
71
56
63
100
100
100
100
100
100
84
82
77
75
83
54

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
3
11
0
13
3
2
1
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)

11
13
14
16
17
16
17
16
16
15
14
11
11
10
10
10
10
10
10
9
8
7
7
6

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

93
90
86
78
75
77
67
66
70
69
72
80
86
90
95
96
96
96
96
96
96
95
95
95

Pressure (mb)

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

Ozone (du)

264
262
260
258
257
257
256
257
260
260
259
259
259
260
259
259
258
258
258
259
259
259
259
261

Friday 19

Waning Crescent 6%

04:59

18:28

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

Sun - Rise: 06:46, Set: 19:07, Transit: 12:56. Moon - Rise: 04:59, Set: 18:28. Civil Dark: 19:40 - 06:13. Nautical Dark: 20:20 - 05:33. Astro Dark: 21:02 - 04:52

Total Clouds (% Sky Obscured)

78
67
34
52
45
37
49
35
38
22
2
30
50
49
71
94
91
91
100
66
43
45
62
80

Low Clouds (% Sky Obscured)

77
66
32
47
39
29
24
28
36
22
0
27
50
46
51
26
0
0
16
23
27
29
43
63

Medium Clouds (% Sky Obscured)

63
43
11
12
3
11
12
3
2
1
0
0
0
0
15
22
19
1
0
0
1
23
59
76

High Clouds (% Sky Obscured)

37
31
34
52
45
37
49
35
20
5
2
8
14
36
29
75
67
69
100
56
42
41
35
55

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
7
100
100
100
100
100
100

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
2
4
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)

7
10
10
10
11
11
12
12
11
11
9
7
7
7
6
5
4
4
4
4
3
3
3
3

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

92
85
74
68
62
56
48
43
43
48
54
63
66
71
75
78
80
78
76
75
75
74
70
69

Pressure (mb)

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

Ozone (du)

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

Saturday 20

Waning Crescent 2%

06:14

18:40

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

Sun - Rise: 06:48, Set: 19:04, Transit: 12:55. Moon - Rise: 06:14, Set: 18:40. Civil Dark: 19:38 - 06:15. Nautical Dark: 20:18 - 05:35. Astro Dark: 20:59 - 04:54

Total Clouds (% Sky Obscured)

94
93
89
100
100
96
100
98
76
76
51
57
55
55
56
68
64
67
71
75
75
75
73
73

Low Clouds (% Sky Obscured)

72
68
58
65
53
60
94
60
68
63
25
39
43
41
45
62
60
67
71
75
75
39
39
36

Medium Clouds (% Sky Obscured)

65
86
87
90
89
76
92
11
6
76
51
42
23
29
22
43
64
60
60
60
65
60
60
56

High Clouds (% Sky Obscured)

71
68
38
100
100
40
100
95
34
55
51
57
55
15
12
1
1
25
15
14
10
4
0
8

ISS Passover

Visibility (miles)

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

Fog (%)

100
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
Light Rain
None
Very Light Rain
Very Light Rain
None
None
None
None
None
None

Precipitation Probability (%)

0
4
22
24
11
3
1
1
1
7
2
0
19
39
59
53
61
64
35
7
2
0
0
0

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.4
0
0.2
0.2
0
0
0
0
0
0

Wind Speed/Direction (mph)

3
4
6
9
9
10
11
11
13
13
12
10
8
8
9
10
11
11
11
10
9
8
6
5

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

14
16
16
16
18
17
17
17
17
17
16
14
13
12
13
12
12
12
12
10
10
10
10
9

Dew Point (°C)

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

Relative Humidity (%)

68
62
59
57
57
58
56
53
48
51
59
65
71
82
87
90
93
95
93
89
87
90
91
95

Pressure (mb)

1011
1011
1011
1011
1011
1010
1009
1009
1008
1008
1009
1009
1010
1010
1011
1010
1010
1010
1010
1010
1010
1010
1010
1011

Ozone (du)

263
262
260
260
261
262
262
262
262
263
263
263
264
265
266
269
269
269
270
271
273
274
276
276

Sunday 21

New Moon 0%

07:28

18:49

08 Bad
09 OK
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

Sun - Rise: 06:50, Set: 19:02, Transit: 12:55. Moon - Rise: 07:28, Set: 18:49. Civil Dark: 19:36 - 06:16. Nautical Dark: 20:15 - 05:37. Astro Dark: 20:57 - 04:56

Total Clouds (% Sky Obscured)

42
40
53
59
67
76
87
77
72
66
60
61
66
54
58
60
74
73
74
74
78
79
79
76

Low Clouds (% Sky Obscured)

34
34
50
56
64
70
74
72
59
41
27
19
15
10
18
26
34
64
60
56
68
67
67
61

Medium Clouds (% Sky Obscured)

2
3
3
4
3
12
17
25
24
25
31
30
54
30
31
33
59
72
70
59
24
26
59
59

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
35
0
0
0
0
0
0
0

ISS Passover

Visibility (miles)

9
9
9
9
9
9
8
8
9
9
9
9
4
9
9
8
3
4
6
4
3
6
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
Very Light Rain
Very Light Rain
None
None
None
None
None
None
None

Precipitation Probability (%)

0
0
1
15
9
24
25
2
2
5
6
19
25
24
44
54
57
52
48
44
36
27
8
3

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

90
81
75
67
58
51
52
57
54
51
59
69
75
80
83
85
93
95
93
95
96
93
91
90

Pressure (mb)

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

Ozone (du)

278
278
278
278
278
279
281
282
283
286
290
293
294
294
294
294
292
293
295
300
303
304
303
304

Monday 22

Waxing Crescent 1%

No Rise

18:59

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

Sun - Rise: 06:51, Set: 19:00, Transit: 12:55. Moon - Rise: No Rise, Set: 18:59. Civil Dark: 19:33 - 06:18. Nautical Dark: 20:13 - 05:39. Astro Dark: 20:54 - 04:57

Total Clouds (% Sky Obscured)

72
68
73
77
83
86
88
89
79
68
58
38
45
54
44
39
33
42
51
60
73
87
100
99

Low Clouds (% Sky Obscured)

57
54
56
57
63
58
47
38
36
37
37
18
32
46
41
37
33
27
22
16
19
23
26
37

Medium Clouds (% Sky Obscured)

51
41
54
62
69
54
49
55
44
37
27
1
1
0
0
0
0
3
8
17
26
33
35
29

High Clouds (% Sky Obscured)

0
0
0
0
0
3
4
1
1
2
20
23
15
9
7
6
7
5
3
1
24
47
70
56

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 (%)

1
1
1
2
5
4
4
1
1
0
0
0
1
0
1
1
0
1
0
0
12
12
5
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

90
85
77
70
63
60
63
68
69
67
69
67
69
71
72
74
78
79
79
79
79
81
85
88

Pressure (mb)

1017
1018
1018
1018
1018
1018
1018
1018
1018
1018
1019
1019
1021
1021
1021
1021
1021
1021
1021
1021
1021
1021
1021
1021

Ozone (du)

303
303
302
301
302
303
304
305
306
306
307
308
308
308
309
309
310
310
312
313
315
313
311
309

Tuesday 23

Waxing Crescent 3%

08:40

19:09

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

Sun - Rise: 06:53, Set: 18:58, Transit: 12:54. Moon - Rise: 08:40, Set: 19:09. Civil Dark: 19:31 - 06:20. Nautical Dark: 20:10 - 05:40. Astro Dark: 20:51 - 04:59

Total Clouds (% Sky Obscured)

98
96
98
99
100
100
100
100
100
100
100
100
100
100
100
100
96
96
91
91
92
90
89
87

Low Clouds (% Sky Obscured)

47
58
48
42
35
41
41
45
44
43
38
59
80
100
94
89
80
75
69
64
74
89
89
87

Medium Clouds (% Sky Obscured)

14
13
20
31
46
36
47
49
54
55
50
40
30
25
20
10
15
20
25
25
19
17
16
12

High Clouds (% Sky Obscured)

42
23
45
70
97
94
88
85
85
80
75
70
60
60
43
22
0
1
2
3
9
15
25
13

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

Precipitation Probability (%)

29
29
30
31
30
31
31
27
31
30
21
40
53
63
63
67
71
62
54
45
45
37
29
36

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

4
4
5
6
6
6
10
10
10
10
11
12
9
9
9
9
9
9
6
6
6
6
6
6

Dew Point (°C)

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

Relative Humidity (%)

79
70
62
58
54
50
48
47
45
50
55
61
65
68
73
76
79
84
85
88
91
93
91
93

Pressure (mb)

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

Ozone (du)

309
308
308
308
309
310
310
311
312
312
312
312
312
311
311
310
310
310
310
309
309
308
306
305

Wednesday 24

Waxing Crescent 7%

09:53

19:21

08 Bad
09 Bad
10 Bad
11 Bad
12 Bad
13 Bad
14 Bad
15 Bad
16 OK
17 OK
18 OK
19 OK
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad

Sun - Rise: 06:55, Set: 18:55, Transit: 12:54. Moon - Rise: 09:53, Set: 19:21. Civil Dark: 19:29 - 06:21. Nautical Dark: 20:08 - 05:42. Astro Dark: 20:49 - 05:01

Total Clouds (% Sky Obscured)

88
86
86
85
89
90
73
46
37
40
42
45
63
57
62
62
58

Low Clouds (% Sky Obscured)

85
86
86
85
87
81
73
46
37
34
25
22
22
24
29
37
44

Medium Clouds (% Sky Obscured)

13
13
13
12
20
22
23
21
21
28
22
30
39
50
50
49
49

High Clouds (% Sky Obscured)

6
2
2
2
1
0
0
0
29
40
42
45
63
57
62
32
3

ISS Passover

Visibility (miles)

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

Precipitation Type

None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

33
17
23
23
19
21
18
11
10
8
3
4
6
10
23
32
41

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

7
7
8
8
8
8
8
7
7
6
4
4
3
3
3
2
2

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

82
73
66
60
53
48
45
44
41
46
52
57
59
60
61
63
64

Pressure (mb)

1021
1021
1021
1021
1021
1021
1021
1021
1021
1021
1021
1021
1021
1022
1022
1022
1021

Ozone (du)

304
302
301
300
299
299
298
298
297
298
298
299
298
298
298
298
297

Forecast for Great Missenden, Buckinghamshire, United Kingdom (51.70,-0.70)

Generated: 18/09/25 08:13:22. Forecast: 18/09/25 to 24/09/25. Timezone: UTC+1.00