Clear Outside v1.0 - International Weather Forecasts For Astronomers

Monday 15

Waning Crescent 30%

23:40

16:55

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

Sun - Rise: 06:44, Set: 19:20, Transit: 13:02. Moon - Rise: 23:40, Set: 16:55. Civil Dark: 19:54 - 06:11. Nautical Dark: 20:34 - 05:31. Astro Dark: 21:17 - 04:49

Total Clouds (% Sky Obscured)

98
40
94
100
96
100
97
97
80
78
70
60
37
35
36
44
46
55
41
45
90
67
64
74

Low Clouds (% Sky Obscured)

43
39
42
43
44
47
60
49
66
60
50
35
37
35
36
44
46
55
41
41
58
61
56
60

Medium Clouds (% Sky Obscured)

0
32
0
13
0
26
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
2

High Clouds (% Sky Obscured)

0
0
0
2
0
2
0
0
0
0
0
0
0
0
0
0
0
2
0
9
86
67
64
74

ISS Passover

Visibility (miles)

-
-
-
-
-
-
-
-
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

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
1
1
1
1
1
1
1
0
1
1
0
1
3
1

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)

22
25
25
24
24
19
18
18
16
16
16
16
18
16
16
15
14
13
13
12
12
14
16
16

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

73
70
67
67
69
71
75
76
78
78
76
77
77
79
79
81
83
81
83
77
68
71
68
62

Pressure (mb)

1005
1005
1006
1006
1007
1007
1008
1008
1009
1010
1011
1012
1013
1013
1014
1014
1015
1015
1016
1016
1017
1017
1018
1018

Ozone (du)

310
311
309
309
309
309
310
309
308
309
304
306
303
302
302
300
300
299
298
297
295
293
290
288

Tuesday 16

Waning Crescent 20%

01:00

17:34

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: 06:46, Set: 19:18, Transit: 13:01. Moon - Rise: 01:00, Set: 17:34. Civil Dark: 19:52 - 06:13. Nautical Dark: 20:32 - 05:33. Astro Dark: 21:14 - 04:51

Total Clouds (% Sky Obscured)

96
99
94
100
100
100
100
100
100
100
100
100
100
100
100
100
100
99
98
100
100
100
97
88

Low Clouds (% Sky Obscured)

52
49
51
27
3
22
57
42
47
53
83
83
81
82
90
96
98
86
88
100
100
100
91
85

Medium Clouds (% Sky Obscured)

48
67
44
43
45
31
43
53
48
76
100
100
100
100
100
100
100
98
96
100
86
52
63
52

High Clouds (% Sky Obscured)

95
78
89
100
100
100
100
71
100
100
100
100
100
100
100
100
94
12
5
3
0
0
0
0

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
5
4
8
7
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
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
None
None
None
None
None

Precipitation Probability (%)

6
2
16
14
4
2
0
14
22
33
79
95
94
95
95
95
95
95
95
27
9
5
8
7

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0.5
1
0.6
0.7
0.4
0.8
1
1.5
0.7
0
0
0
0
0

Wind Speed/Direction (mph)

16
15
16
15
14
12
11
10
8
8
8
8
9
9
11
12
13
15
16
17
17
17
18
18

Chance of Frost

Temperature (°C)

15
16
15
15
15
14
14
13
13
12
12
12
12
12
13
13
13
14
14
15
15
15
16
16

Feels Like (°C)

10
11
10
11
10
10
10
10
11
10
10
10
10
10
10
11
11
11
11
11
11
11
12
12

Dew Point (°C)

7
7
6
7
7
7
8
9
10
11
11
10
10
10
11
11
12
13
13
13
14
14
15
15

Relative Humidity (%)

58
55
54
58
60
62
69
75
83
89
90
86
84
86
87
89
95
93
95
92
93
92
93
92

Pressure (mb)

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

Ozone (du)

286
282
277
274
272
271
269
267
265
265
263
261
261
259
258
257
256
257
258
259
260
261
261
262

Wednesday 17

Waning Crescent 12%

02:24

18:00

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: 06:48, Set: 19:16, Transit: 13:01. Moon - Rise: 02:24, Set: 18:00. Civil Dark: 19:49 - 06:14. Nautical Dark: 20:29 - 05:34. Astro Dark: 21:11 - 04:53

Total Clouds (% Sky Obscured)

81
69
63
81
69
70
72
88
65
58
56
72
75
83
93
97
100
100
100
97
95
89
79
96

Low Clouds (% Sky Obscured)

70
69
63
65
54
54
41
48
47
52
39
50
55
68
74
77
100
100
100
90
79
82
70
65

Medium Clouds (% Sky Obscured)

49
40
45
25
12
70
18
25
13
3
15
10
9
9
11
17
17
10
12
15
17
10
10
9

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
41
0
0
0
0
0
0
0
0
0
0
0
0
2
13
20
83

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 (%)

2
7
8
1
3
18
0
0
0
2
15
0
0
10
0
0
0
0
1
2
0
2
5
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

16
17
17
17
16
16
16
15
14
14
14
13
13
13
13
13
13
12
12
13
13
15
15
14

Relative Humidity (%)

92
90
89
88
88
89
92
93
93
95
95
95
95
95
95
95
92
89
87
87
87
87
82
75

Pressure (mb)

1013
1013
1013
1013
1013
1014
1014
1014
1015
1015
1016
1016
1016
1016
1016
1016
1016
1016
1016
1016
1017
1017
1017
1017

Ozone (du)

263
264
266
266
264
263
263
263
262
261
260
261
261
261
261
262
262
263
262
263
261
260
260
260

Thursday 18

Waning Crescent 6%

03:46

18:19

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: 18:19. Civil Dark: 19:47 - 06:16. Nautical Dark: 20:27 - 05:36. Astro Dark: 21:08 - 04:55

Total Clouds (% Sky Obscured)

84
98
99
100
92
84
75
78
77
76
83
83
86
97
96
97
92
56
63
91
92
87
84
81

Low Clouds (% Sky Obscured)

59
51
45
41
40
42
45
54
61
65
71
74
77
76
72
64
61
56
57
50
43
40
45
49

Medium Clouds (% Sky Obscured)

8
5
6
4
4
4
5
6
6
32
55
44
51
70
42
43
21
11
2
2
2
2
0
3

High Clouds (% Sky Obscured)

71
88
95
100
76
49
27
24
24
25
43
58
71
86
94
97
92
56
63
86
77
69
68
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 (%)

2
1
1
0
1
1
1
3
4
0
0
0
0
2
4
5
7
6
1
1
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)

18
19
19
18
17
15
14
12
12
11
11
11
10
10
10
10
9
9
8
8
9
10
11
12

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

13
13
13
13
14
14
15
15
15
15
15
14
15
15
14
15
14
14
14
14
14
14
14
14

Relative Humidity (%)

67
62
63
64
66
71
77
86
92
93
93
90
93
95
93
95
95
95
95
95
90
82
75
69

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
259
258
257
258
258
258
259
260
260
260
260
261
261
262
263
263
262
262
262
263
263
264
264

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 OK
22 OK
23 OK
00 OK
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: 21:06 - 04:56

Total Clouds (% Sky Obscured)

79
73
68
62
63
62
63
50
50
44
39
25
15
42
72
100
100
100
100
99
99
100
96
91

Low Clouds (% Sky Obscured)

55
55
51
48
46
49
50
48
43
43
34
23
11
22
33
45
47
50
52
58
65
73
61
50

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
4
2
14
2
1
3
4
27
42
61
56
66
28
7
9
11
40
69

High Clouds (% Sky Obscured)

56
43
33
19
19
19
15
4
1
4
30
15
15
30
72
100
100
100
100
90
92
100
79
59

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
0
0
0
14
15
8
10
5
11
10
4
10
12

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
12
12
11
10
8
6
6
5
5
5
4
4
4
4
4
5
4
4
5
6
6
6

Chance of Frost

Temperature (°C)

21
22
22
22
22
21
20
18
17
17
16
15
15
14
14
13
13
13
13
13
15
16
18
18

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

63
58
55
53
53
58
65
76
85
86
87
87
89
89
92
92
92
93
95
93
85
79
72
71

Pressure (mb)

1017
1017
1017
1017
1016
1016
1016
1016
1017
1017
1017
1017
1017
1017
1016
1016
1015
1015
1014
1014
1015
1015
1015
1014

Ozone (du)

264
264
265
266
266
266
267
267
267
267
268
269
269
269
269
269
268
268
269
270
270
270
270
269

Saturday 20

Waning Crescent 2%

06:19

18:44

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: 06:52, Set: 19:09, Transit: 13:00. Moon - Rise: 06:19, Set: 18:44. Civil Dark: 19:42 - 06:19. Nautical Dark: 20:22 - 05:40. Astro Dark: 21:03 - 04:58

Total Clouds (% Sky Obscured)

86
72
58
43
58
72
86
91
95
100
100
100
96
92
78
71
70
77
87
89
93
100
100
100

Low Clouds (% Sky Obscured)

39
38
36
36
36
34
36
25
15
4
17
24
28
28
33
38
55
70
82
86
90
92
91
92

Medium Clouds (% Sky Obscured)

86
72
58
43
58
68
70
72
75
74
62
50
38
33
29
35
23
24
20
15
10
10
10
9

High Clouds (% Sky Obscured)

38
30
21
17
41
70
79
75
80
94
92
96
96
92
78
71
70
77
87
65
60
60
55
65

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
Very Light Rain
Light Rain
Light Rain
Light Rain
Moderate Rain
Light Rain
Light Rain

Precipitation Probability (%)

14
15
17
14
25
28
26
21
17
18
20
20
14
19
23
24
43
64
87
95
95
95
95
89

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.3
0.6
1.2
1.9
3.1
0.8
0.4

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

19
19
20
20
20
20
19
18
16
15
14
13
12
12
11
11
11
12
12
12
13
13
13
13

Feels Like (°C)

16
16
18
18
18
18
18
18
14
13
13
13
12
11
10
10
10
10
10
9
10
10
10
10

Dew Point (°C)

13
14
15
16
17
17
16
15
15
14
13
12
11
11
10
10
10
10
10
10
10
9
9
9

Relative Humidity (%)

70
69
74
78
82
84
85
86
89
92
95
93
93
93
93
92
93
90
89
86
81
77
75
72

Pressure (mb)

1014
1013
1013
1012
1012
1012
1012
1012
1012
1012
1012
1012
1011
1011
1010
1010
1009
1008
1008
1008
1008
1008
1008
1008

Ozone (du)

268
267
268
269
269
270
272
273
274
275
276
280
284
288
294
300
307
307
307
307
309
311
314
314

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: 19:40 - 06:21. Nautical Dark: 20:19 - 05:41. Astro Dark: 21:00 - 05:00

Total Clouds (% Sky Obscured)

100
99
99
98
98
97
94
94
95
97
85
72
60
50
50
52
42
28
22
18
18
23
40
58

Low Clouds (% Sky Obscured)

93
84
76
67
78
89
94
94
95
97
85
72
60
50
50
52
42
28
22
18
18
23
40
58

Medium Clouds (% Sky Obscured)

9
13
12
12
12
13
9
9
9
13
21
21
24
26
33
36
34
28
22
18
18
23
20
27

High Clouds (% Sky Obscured)

65
65
70
72
76
79
69
66
63
65
65
65
60
50
50
52
42
28
22
18
18
23
40
58

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

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

Precipitation Probability (%)

72
72
68
48
54
57
63
51
40
26
25
22
15
28
28
18
36
42
42
55
57
52
69
81

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

8
7
7
7
7
7
7
7
7
8
8
8
8
8
8
7
8
7
7
7
7
7
7
8

Relative Humidity (%)

69
65
64
62
61
63
65
69
73
79
85
85
85
87
87
87
88
90
91
93
85
78
72
73

Pressure (mb)

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

Ozone (du)

314
315
317
319
321
322
324
326
327
327
327
326
324
322
323
324
325
325
325
324
323
321
319
318

Forecast for Swindon, Swindon, United Kingdom (51.56,-1.78)

Generated: 15/09/25 20:28:33. Forecast: 15/09/25 to 21/09/25. Timezone: UTC+1.00