Clear Outside v1.0 - International Weather Forecasts For Astronomers

Thursday 18

Waning Crescent 12%

03:44

18:15

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
23 Bad
00 Bad
01 Bad
02 Bad
03 Bad

Sun - Rise: 06:45, Set: 19:11, Transit: 12:58. Moon - Rise: 03:44, Set: 18:15. Civil Dark: 19:44 - 06:12. Nautical Dark: 20:23 - 05:32. Astro Dark: 21:05 - 04:51

Total Clouds (% Sky Obscured)

98
97
100
98
76
94
85
94
93
87
100
100
100
98
88
100
100
100
100
100
100
98
100
68

Low Clouds (% Sky Obscured)

87
97
87
77
76
89
85
94
93
80
64
59
59
53
59
51
67
67
76
77
75
66
69
64

Medium Clouds (% Sky Obscured)

16
13
33
16
0
8
0
2
2
2
0
1
1
22
46
2
48
24
0
3
2
2
3
3

High Clouds (% Sky Obscured)

0
0
0
0
0
3
3
4
20
52
65
84
83
96
51
100
100
100
100
100
100
95
100
56

ISS Passover

Visibility (miles)

1
0
2
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
1
0
0
2
1
0
1
1
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
15
14
15
15
16
17
18
18
17
17
17
16
15
13
12
10
10
10
10
10
9
8
7

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

16
16
16
16
16
15
16
15
14
14
14
15
14
14
15
15
15
16
16
16
16
15
15
15

Relative Humidity (%)

95
96
96
95
92
85
82
72
68
67
65
68
68
69
76
83
89
93
95
96
96
95
96
96

Pressure (mb)

1017
1017
1017
1018
1018
1019
1019
1019
1019
1019
1019
1019
1019
1019
1019
1020
1020
1021
1021
1021
1021
1021
1020
1020

Ozone (du)

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

Friday 19

Waning Crescent 6%

No Rise

18:29

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

Sun - Rise: 06:47, Set: 19:08, Transit: 12:57. Moon - Rise: No Rise, Set: 18:29. Civil Dark: 19:41 - 06:13. Nautical Dark: 20:21 - 05:34. Astro Dark: 21:02 - 04:53

Total Clouds (% Sky Obscured)

57
67
55
58
55
48
45
39
24
0
24
18
12
7
24
21
66
84
63
97
95
73
82
71

Low Clouds (% Sky Obscured)

57
67
55
58
55
46
44
32
24
0
11
18
8
7
24
21
55
63
34
32
18
15
22
32

Medium Clouds (% Sky Obscured)

3
40
43
58
46
16
15
3
4
0
4
3
0
0
0
0
4
18
22
13
0
4
2
3

High Clouds (% Sky Obscured)

51
50
52
32
12
48
31
37
24
0
24
18
12
3
3
2
42
36
23
86
81
65
69
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
2
0
0
0
0
0
0
0
0
0
0
0
0
1
0
22
39
48

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
2
9

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)

6
5
4
5
4
8
7
9
10
11
11
11
12
10
9
7
7
6
5
4
4
3
3
3

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

96
95
96
96
93
82
76
67
60
52
45
45
44
46
53
65
72
70
70
69
70
69
67
65

Pressure (mb)

1020
1019
1019
1019
1019
1019
1019
1019
1018
1017
1017
1016
1016
1016
1016
1016
1016
1016
1016
1016
1015
1015
1014
1013

Ozone (du)

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

Saturday 20

Waning Crescent 2%

05:01

18:41

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 OK
21 Bad
22 Bad
23 Bad
00 Bad
01 Bad
02 OK
03 OK

Sun - Rise: 06:48, Set: 19:06, Transit: 12:57. Moon - Rise: 05:01, Set: 18:41. Civil Dark: 19:39 - 06:15. Nautical Dark: 20:18 - 05:36. Astro Dark: 20:59 - 04:55

Total Clouds (% Sky Obscured)

51
74
78
84
91
98
100
100
87
98
100
97
68
77
54
58
25
24
44
52
56
47
42
33

Low Clouds (% Sky Obscured)

37
41
48
68
74
74
78
53
54
79
82
43
41
51
26
33
6
24
44
49
39
47
42
33

Medium Clouds (% Sky Obscured)

9
64
77
82
76
92
90
92
87
60
38
4
4
70
54
40
7
5
3
51
56
47
42
33

High Clouds (% Sky Obscured)

23
52
20
19
20
82
100
100
25
27
100
90
24
25
30
35
25
13
0
0
15
10
9
10

ISS Passover

Visibility (miles)

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

Fog (%)

52
51
35
1
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
Very Light Rain
Very Light Rain
None
None
None
None
None

Precipitation Probability (%)

3
0
0
0
7
17
12
21
11
5
6
1
1
4
1
1
25
59
59
35
37
32
4
2

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

3
3
2
2
2
5
9
9
10
11
14
14
17
15
12
10
9
9
9
11
12
12
9
8

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

68
66
65
65
65
61
55
58
60
59
53
51
49
53
63
73
83
89
92
92
89
89
84
86

Pressure (mb)

1013
1012
1012
1011
1011
1011
1011
1011
1011
1010
1009
1009
1009
1009
1009
1010
1011
1011
1011
1010
1010
1010
1010
1010

Ozone (du)

262
263
264
264
264
261
259
259
260
262
261
261
262
263
263
264
266
267
267
269
268
269
270
270

Sunday 21

New Moon 0%

06:16

18:51

04 OK
05 Bad
06 Bad
07 Bad
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

Sun - Rise: 06:50, Set: 19:04, Transit: 12:57. Moon - Rise: 06:16, Set: 18:51. Civil Dark: 19:37 - 06:17. Nautical Dark: 20:16 - 05:37. Astro Dark: 20:57 - 04:57

Total Clouds (% Sky Obscured)

38
43
44
49
44
41
52
62
72
84
71
63
62
54
55
64
64
94
87
75
69
65
72
72

Low Clouds (% Sky Obscured)

36
37
44
43
43
41
49
57
64
77
71
63
62
53
41
34
30
64
63
55
59
38
34
39

Medium Clouds (% Sky Obscured)

28
30
0
15
3
4
12
20
24
25
23
24
27
31
39
51
53
50
51
59
61
41
52
31

High Clouds (% Sky Obscured)

10
0
0
5
0
0
0
0
0
0
0
0
0
0
0
1
1
2
2
2
2
3
4
5

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
8
9
9
9
9
8
9
9
9
9
3
9
9
3
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
Very Light Rain
Very Light Rain
None
Very Light Rain
None
None

Precipitation Probability (%)

4
1
1
3
1
4
6
25
26
30
22
16
16
28
26
21
14
26
51
54
31
52
40
20

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

87
90
91
93
88
80
70
61
56
56
56
53
52
54
67
80
81
83
80
87
90
88
93
96

Pressure (mb)

1010
1011
1011
1011
1011
1012
1012
1012
1012
1012
1012
1012
1012
1012
1012
1013
1013
1014
1014
1014
1014
1014
1014
1015

Ozone (du)

272
273
274
274
277
278
278
278
279
279
280
281
283
285
289
294
295
294
294
293
293
295
301
304

Monday 22

Waxing Crescent 1%

07:29

19:01

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 OK
22 OK
23 OK
00 OK
01 OK
02 OK
03 OK

Sun - Rise: 06:51, Set: 19:01, Transit: 12:56. Moon - Rise: 07:29, Set: 19:01. Civil Dark: 19:34 - 06:18. Nautical Dark: 20:14 - 05:39. Astro Dark: 20:54 - 04:58

Total Clouds (% Sky Obscured)

79
82
80
77
76
73
76
79
83
81
78
74
71
68
66
77
62
48
43
39
38
39
40
41

Low Clouds (% Sky Obscured)

41
55
64
62
66
71
64
59
55
54
52
51
52
53
53
6
11
17
24
31
38
39
34
25

Medium Clouds (% Sky Obscured)

57
71
63
51
47
36
33
30
41
70
75
71
40
54
35
34
15
7
4
2
0
0
1
3

High Clouds (% Sky Obscured)

5
6
6
4
2
0
0
4
1
0
1
1
5
15
13
54
49
25
14
7
1
1
1
0

ISS Passover

Visibility (miles)

9
9
1
8
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 (%)

16
19
22
16
16
11
10
10
16
19
20
24
9
4
1
2
2
0
1
1
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

96
98
98
96
93
87
83
75
67
60
56
58
62
70
71
68
67
68
67
72
76
78
82
85

Pressure (mb)

1015
1015
1016
1016
1017
1017
1018
1018
1018
1017
1017
1017
1017
1018
1018
1018
1020
1021
1021
1021
1021
1021
1020
1020

Ozone (du)

304
304
302
303
304
303
303
303
305
305
305
306
306
306
307
308
308
309
309
310
310
311
311
312

Tuesday 23

Waxing Crescent 3%

08:41

19:12

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
23 Bad
00 Bad
01 Bad
02 Bad
03 Bad

Sun - Rise: 06:53, Set: 18:59, Transit: 12:56. Moon - Rise: 08:41, Set: 19:12. Civil Dark: 19:32 - 06:20. Nautical Dark: 20:11 - 05:41. Astro Dark: 20:52 - 05:00

Total Clouds (% Sky Obscured)

61
80
100
100
100
100
100
99
100
99
98
97
97
92
86
84
82
82
90
95
100
93
85
82

Low Clouds (% Sky Obscured)

31
37
44
44
44
41
43
48
53
47
51
55
49
40
34
39
49
57
61
64
66
69
73
76

Medium Clouds (% Sky Obscured)

10
25
35
15
10
5
13
22
30
33
39
66
65
60
50
30
15
15
15
10
10
10
15
15

High Clouds (% Sky Obscured)

32
64
85
80
74
72
81
91
100
99
98
97
97
92
86
75
65
50
34
18
1
18
35
48

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
Very Light Rain
None
None
Very Light Rain
Very Light Rain

Precipitation Probability (%)

11
9
6
24
32
35
37
38
39
42
44
43
38
34
30
34
37
40
47
54
54
51
57
54

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

88
88
88
87
77
68
59
55
52
48
47
45
44
49
54
59
60
62
64
65
68
69
76
81

Pressure (mb)

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

Ozone (du)

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

Wednesday 24

Waxing Crescent 7%

09:54

19:25

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

Sun - Rise: 06:54, Set: 18:57, Transit: 12:56. Moon - Rise: 09:54, Set: 19:25. Civil Dark: 19:30 - 06:21. Nautical Dark: 20:09 - 05:43. Astro Dark: 20:49 - 05:02

Total Clouds (% Sky Obscured)

85
84
85
81
72
63
56
45
43
42
36
27
25
20
25
21
20
20
18
17
21

Low Clouds (% Sky Obscured)

73
71
69
69
59
52
51
45
43
42
36
27
25
15
5
11
14
17
18
17
21

Medium Clouds (% Sky Obscured)

10
10
10
5
10
10
8
9
9
16
19
25
25
20
25
21
20
20
18
17
21

High Clouds (% Sky Obscured)

55
69
70
49
29
10
7
5
2
1
0
0
0
0
0
21
20
20
18
17
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
Light Rain
Light Rain
Very Light Rain
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
Very Light Rain
Light Rain

Precipitation Probability (%)

47
56
65
53
40
36
27
16
4
4
3
1
4
5
4
16
27
39
52
63
69

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

8
8
8
7
5
6
6
7
8
8
14
14
14
14
14
14
10
10
10
10
10

Dew Point (°C)

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

Relative Humidity (%)

88
88
90
93
82
73
65
59
52
46
45
43
41
45
51
56
58
60
62
64
64

Pressure (mb)

1020
1020
1020
1020
1021
1021
1021
1021
1021
1021
1021
1021
1021
1021
1021
1021
1021
1022
1022
1021
1021

Ozone (du)

308
307
306
305
304
302
301
300
300
299
299
298
298
299
299
300
299
298
298
298
298

Forecast for Basingstoke, Hampshire, United Kingdom (51.26,-1.09)

Generated: 18/09/25 04:30:49. Forecast: 18/09/25 to 24/09/25. Timezone: UTC+1.00