Clear Outside v1.0 - International Weather Forecasts For Astronomers

Thursday 18

Waning Crescent 6%

03:43

18:21

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: 19:14, Transit: 13:00. Moon - Rise: 03:43, Set: 18:21. Civil Dark: 19:48 - 06:15. Nautical Dark: 20:28 - 05:35. Astro Dark: 21:11 - 04:52

Total Clouds (% Sky Obscured)

99
98
91
88
81
68
63
89
92
99
100
100
100
100
100
100
100
98
87
95
92
82
90
100

Low Clouds (% Sky Obscured)

65
50
67
52
69
59
54
55
60
68
53
45
47
54
48
59
54
47
41
63
64
69
73
66

Medium Clouds (% Sky Obscured)

15
20
13
9
4
0
21
40
21
36
48
64
65
48
25
65
15
53
53
46
64
54
55
60

High Clouds (% Sky Obscured)

76
89
70
55
65
68
55
55
85
96
100
100
100
100
100
100
100
96
85
89
83
69
83
100

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
7
18
3
5
2
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)

15
16
17
17
17
16
15
12
11
9
10
11
12
11
11
10
9
8
8
7
8
10
10
11

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

86
86
86
85
75
75
77
82
88
92
93
93
93
93
93
95
95
95
96
95
92
85
76
70

Pressure (mb)

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

Ozone (du)

260
260
260
260
260
259
258
260
258
259
259
259
259
259
260
262
263
264
262
261
262
261
261
260

Friday 19

Waning Crescent 2%

05:02

18:34

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: 05:02, Set: 18:34. Civil Dark: 19:45 - 06:17. Nautical Dark: 20:26 - 05:36. Astro Dark: 21:08 - 04:54

Total Clouds (% Sky Obscured)

100
99
100
91
84
80
92
100
100
96
91
95
97
100
100
100
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

65
52
42
46
49
39
40
0
0
10
29
45
49
42
37
47
55
64
48
41
79
77
85
89

Medium Clouds (% Sky Obscured)

59
4
6
19
4
24
35
0
0
0
2
0
55
64
17
46
58
81
74
97
86
88
62
54

High Clouds (% Sky Obscured)

100
96
50
52
32
31
54
100
100
68
60
67
78
100
100
100
100
100
100
100
99
100
100
100

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
2
1
0
0
0
28
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
3
1
2
1
0
0
0
0
0
1
1
3

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
12
13
14
13
12
10
7
6
6
5
5
4
4
4
3
3
3
2
3
4
6
7
10

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

64
58
51
46
44
48
55
66
72
77
82
86
87
89
89
90
90
92
92
93
87
79
71
59

Pressure (mb)

1017
1016
1016
1015
1014
1014
1014
1014
1015
1015
1014
1014
1014
1014
1013
1013
1012
1012
1011
1011
1010
1011
1010
1009

Ozone (du)

261
260
260
260
260
261
263
263
263
265
266
265
266
265
265
267
267
265
264
264
265
266
265
265

Saturday 20

Waning Crescent 2%

06:18

18:45

12 Bad
13 Bad
14 Bad
15 Bad
16 Bad
17 Bad
18 Bad
19 Bad
20 Bad
21 OK
22 OK
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: 06:18, Set: 18:45. Civil Dark: 19:43 - 06:18. Nautical Dark: 20:23 - 05:38. Astro Dark: 21:05 - 04:56

Total Clouds (% Sky Obscured)

100
100
100
96
94
86
66
82
82
28
35
47
81
99
85
73
77
92
97
96
95
93
96
96

Low Clouds (% Sky Obscured)

70
47
56
73
65
58
60
55
78
28
15
47
66
84
71
62
58
82
93
84
77
70
80
87

Medium Clouds (% Sky Obscured)

49
53
43
80
84
80
18
72
5
0
0
0
3
30
11
3
10
24
15
20
23
27
26
29

High Clouds (% Sky Obscured)

100
100
100
58
32
0
14
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
Light Rain
None
Very Light Rain
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

10
33
60
22
49
50
42
13
2
0
1
3
24
5
12
7
4
21
20
10
21
22
15
23

Precipitation Amount (mm)

0
0
0.4
0
0.2
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
12
11
13
12
14
13
14
13
16
15
16
17
17
16
17
17
17
17
17
16
17
16

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

17
16
17
17
17
16
15
15
12
12
11
8
8
6
7
7
6
7
6
6
6
5
7
7

Dew Point (°C)

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

Relative Humidity (%)

52
50
50
47
45
49
53
60
67
70
69
76
79
72
72
66
73
71
70
71
71
70
67
66

Pressure (mb)

1009
1008
1007
1006
1005
1004
1003
1003
1004
1004
1004
1004
1004
1004
1004
1004
1004
1004
1005
1006
1007
1008
1009
1010

Ozone (du)

265
265
265
266
266
268
270
276
277
282
284
285
287
289
293
296
299
300
301
303
305
308
309
307

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: 19:07, Transit: 12:59. Moon - Rise: 07:32, Set: 18:54. Civil Dark: 19:40 - 06:20. Nautical Dark: 20:21 - 05:40. Astro Dark: 21:03 - 04:58

Total Clouds (% Sky Obscured)

98
99
100
100
98
95
95
86
76
66
67
58
39
33
30
40
42
44
45
39
40
39
47
47

Low Clouds (% Sky Obscured)

96
91
86
79
63
42
21
15
5
0
2
4
11
9
2
10
19
19
20
26
33
31
36
41

Medium Clouds (% Sky Obscured)

28
32
45
50
53
83
88
76
60
50
51
51
17
33
30
40
42
44
45
39
38
35
30
30

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
23
25
27
35
45
39
33
30
3
27
12
43
39
27
14
2
1

ISS Passover

Visibility (miles)

9
9
9
9
9
9
3
3
2
2
4
4
6
4
3
3
5
7
5
5
4
4
8
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
Light Rain
Light Rain
Light Rain
Light Rain
Very Light Rain
None
None
Light Rain
Light Rain
Very Light Rain
None
None
Very Light Rain
Light Rain
Light Rain
Very Light Rain
None
None

Precipitation Probability (%)

5
8
11
15
29
44
79
77
84
78
63
49
46
62
65
61
52
57
62
70
65
46
18
5

Precipitation Amount (mm)

0
0
0
0
0
0
0.6
0.6
0.9
0.6
0.3
0
0
0.4
0.5
0.3
0
0
0.2
0.4
0.4
0.2
0
0

Wind Speed/Direction (mph)

16
17
13
11
10
8
7
6
6
8
7
7
7
8
9
11
12
14
14
16
17
17
17
17

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

8
9
10
11
11
10
9
10
9
7
7
7
7
6
5
4
4
2
2
2
3
3
4
5

Dew Point (°C)

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

Relative Humidity (%)

63
58
55
53
56
73
86
93
93
93
93
91
93
93
93
93
91
90
90
90
90
88
84
80

Pressure (mb)

1010
1010
1011
1011
1011
1011
1012
1012
1013
1014
1014
1015
1015
1016
1016
1016
1016
1017
1018
1018
1019
1020
1021
1021

Ozone (du)

307
309
309
310
311
311
309
309
309
309
309
309
308
308
309
309
310
311
312
311
311
312
313
313

Monday 22

Waxing Crescent 1%

08:46

19:03

12 Bad
13 OK
14 OK
15 OK
16 OK
17 OK
18 Bad
19 Bad
20 Bad
21 Bad
22 OK
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: 06:56, Set: 19:04, Transit: 12:59. Moon - Rise: 08:46, Set: 19:03. Civil Dark: 19:38 - 06:22. Nautical Dark: 20:18 - 05:42. Astro Dark: 21:00 - 05:00

Total Clouds (% Sky Obscured)

52
38
35
22
32
37
52
54
49
52
34
18
3
12
21
30
49
68
79
82
82
89
89
89

Low Clouds (% Sky Obscured)

49
35
27
17
28
37
49
51
49
52
34
17
0
10
19
28
29
29
29
19
11
3
30
57

Medium Clouds (% Sky Obscured)

12
4
2
1
0
0
0
0
0
0
0
0
0
0
1
1
12
23
34
25
28
41
34
34

High Clouds (% Sky Obscured)

0
0
0
0
0
0
1
2
1
0
2
2
2
6
9
13
30
46
52
52
56
55
43
29

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 (%)

3
2
1
2
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
0
3
3

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)

15
15
16
14
13
12
12
10
8
6
5
5
5
4
4
3
3
3
3
3
4
4
5
7

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

77
76
64
67
63
63
65
63
65
72
74
71
70
70
72
72
74
76
79
80
78
74
69
64

Pressure (mb)

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

Ozone (du)

311
309
308
307
307
307
308
308
308
307
305
305
304
304
303
302
301
301
301
301
301
301
301
301

Tuesday 23

Waxing Crescent 3%

10:00

19:12

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: 10:00, Set: 19:12. Civil Dark: 19:36 - 06:24. Nautical Dark: 20:16 - 05:44. Astro Dark: 20:57 - 05:02

Total Clouds (% Sky Obscured)

90
93
94
95
96
97
98
97
99
94
90
80
72
67
57
57
57
57
57
67
67
67
72
86

Low Clouds (% Sky Obscured)

83
70
57
44
62
79
97
93
90
85
87
80
72
67
57
57
56
56
56
55
57
59
57
60

Medium Clouds (% Sky Obscured)

26
37
42
50
33
9
4
5
10
40
40
45
50
50
50
45
40
40
40
35
35
35
35
30

High Clouds (% Sky Obscured)

9
7
4
0
0
0
0
32
63
94
90
80
72
57
28
2
1
1
0
22
27
35
21
18

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

Precipitation Probability (%)

2
17
21
17
41
49
52
48
42
33
48
58
66
70
75
81
72
62
51
46
40
31
30
27

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

59
54
52
51
49
49
50
49
55
65
73
73
76
77
78
80
81
82
84
84
77
69
63
58

Pressure (mb)

1024
1024
1023
1023
1023
1023
1023
1023
1024
1024
1024
1024
1024
1024
1024
1024
1024
1024
1024
1024
1025
1025
1025
1025

Ozone (du)

300
300
300
299
299
299
298
298
297
297
297
297
297
297
298
298
298
297
297
296
296
296
296
295

Wednesday 24

Waxing Crescent 7%

11:14

19:24

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: 19:00, Transit: 12:58. Moon - Rise: 11:14, Set: 19:24. Civil Dark: 19:33 - 06:25. Nautical Dark: 20:13 - 05:45. Astro Dark: 20:55 - 05:04

Total Clouds (% Sky Obscured)

86
83
80
85
89
93
97
99
99
100
100
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

66
66
71
71
71
74
79
83
87
90
90
90
89
91
93
95
96
96
96

Medium Clouds (% Sky Obscured)

35
30
30
25
24
22
21
22
23
24
29
39
45
50
55
60
65
70
70

High Clouds (% Sky Obscured)

14
25
34
61
69
68
71
76
71
71
66
65
60
66
67
73
69
71
76

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
Very Light Rain
Very Light Rain

Precipitation Probability (%)

21
28
35
40
38
40
43
42
36
30
31
31
28
36
40
40
50
58
65

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

13
14
14
15
15
14
14
13
13
13
12
12
12
11
11
11
11
11
11

Feels Like (°C)

10
10
15
15
14
14
15
14
11
11
12
11
12
11
9
9
9
9
9

Dew Point (°C)

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

Relative Humidity (%)

54
49
47
46
46
47
50
52
55
57
59
60
62
62
63
63
63
63
65

Pressure (mb)

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

Ozone (du)

295
295
295
295
294
294
294
294
293
292
292
291
291
291
291
291
292
292
291

Forecast for Henley in Arden, Warwickshire, United Kingdom (52.29,-1.78)

Generated: 18/09/25 12:42:00. Forecast: 18/09/25 to 24/09/25. Timezone: UTC+1.00