Clear Outside v1.0 - International Weather Forecasts For Astronomers

Monday 15

Waning Crescent 30%

23:40

17:34

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

Sun - Rise: 06:44, Set: 19:18, Transit: 13:01. Moon - Rise: 23:40, Set: 17:34. Civil Dark: 19:52 - 06:11. Nautical Dark: 20:32 - 05:31. Astro Dark: 21:17 - 04:49

Total Clouds (% Sky Obscured)

57
56
50
46
45
46
54
59
55
47
71
100
59
75
100
100
100
100
100
100
100
99
100
100

Low Clouds (% Sky Obscured)

52
43
39
44
43
44
53
59
55
47
39
51
55
58
31
72
60
61
34
4
28
43
48
5

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
40
63
76
70
72
74
89
89
95

High Clouds (% Sky Obscured)

0
0
0
0
0
0
3
0
0
0
18
59
45
69
100
100
100
100
100
100
96
86
99
84

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
0
1
1
1
2
2
1
2
2
0
0
1
3
0
1
3
15
2
12
2
1
4
16

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)

16
16
16
14
16
16
15
14
14
14
13
13
13
16
16
15
15
15
14
14
13
11
9
8

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

78
76
76
77
77
77
80
81
80
77
67
65
64
65
62
59
55
55
60
58
60
68
76
83

Pressure (mb)

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

Ozone (du)

311
310
307
307
304
304
303
302
304
304
303
299
295
292
290
286
281
277
273
269
267
265
264
263

Tuesday 16

Waning Crescent 20%

01:00

18:00

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

Sun - Rise: 06:46, Set: 19:16, Transit: 13:01. Moon - Rise: 01:00, Set: 18:00. Civil Dark: 19:49 - 06:13. Nautical Dark: 20:29 - 05:33. Astro Dark: 21:14 - 04:51

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
99
96
95
99
100
100
95
95
76
62
73
65
100
86
71
74
76

Low Clouds (% Sky Obscured)

37
61
61
85
85
84
100
96
88
83
94
100
100
94
95
76
62
63
58
50
56
53
54
54

Medium Clouds (% Sky Obscured)

85
99
100
99
100
100
97
96
86
87
98
100
75
6
23
18
14
10
9
8
14
23
8
31

High Clouds (% Sky Obscured)

100
100
100
100
100
100
88
61
19
0
2
1
0
0
0
0
0
0
0
90
56
0
31
0

ISS Passover

Visibility (miles)

9
9
9
9
6
9
9
4
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
Light Rain
Light Rain
Light Rain
Very Light Rain
Light Rain
Light Rain
None
None
None
Light Rain
Very Light Rain
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

38
70
90
91
85
95
95
61
45
30
56
40
8
11
8
10
4
2
0
4
4
4
3
1

Precipitation Amount (mm)

0
0.4
0.7
0.6
0.3
1
0.5
0
0
0
0.4
0.2
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

7
7
9
9
10
10
11
15
17
19
20
19
20
19
19
19
20
19
18
17
16
15
15
14

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

10
10
9
10
11
11
12
13
13
13
14
14
14
15
15
16
18
19
18
17
16
16
15
14

Relative Humidity (%)

86
87
84
86
90
92
92
95
93
92
92
93
92
92
93
93
93
93
92
92
92
92
93
93

Pressure (mb)

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

Ozone (du)

262
262
260
259
256
256
254
253
255
257
258
259
260
260
261
262
266
266
266
265
264
262
261
261

Wednesday 17

Waning Crescent 12%

02:24

18:19

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

Sun - Rise: 06:48, Set: 19:13, Transit: 13:00. Moon - Rise: 02:24, Set: 18:19. Civil Dark: 19:47 - 06:14. Nautical Dark: 20:27 - 05:34. Astro Dark: 21:11 - 04:53

Total Clouds (% Sky Obscured)

74
88
86
89
92
77
94
94
87
89
89
93
88
86
63
49
38
45
49
81
100
100
100
100

Low Clouds (% Sky Obscured)

56
78
72
78
59
57
55
67
60
81
84
92
86
81
62
49
38
41
38
48
37
43
43
45

Medium Clouds (% Sky Obscured)

14
11
12
15
31
12
21
11
13
5
2
0
0
0
0
0
0
0
4
3
12
15
23
27

High Clouds (% Sky Obscured)

13
11
17
2
1
5
11
56
11
0
0
0
0
0
0
0
1
2
3
56
100
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
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
2
0
0
1
0
0
0
0
0
0
3
2
0
0
0
0
0
0
1
2
2

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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

93
93
93
93
93
92
95
92
86
87
90
92
86
81
75
69
65
62
62
64
68
75
83
92

Pressure (mb)

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

Ozone (du)

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

Thursday 18

Waning Crescent 6%

03:46

18:32

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
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad
17 Bad
18 Bad
19 Bad
20 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: 21:08 - 04:55

Total Clouds (% Sky Obscured)

100
100
100
100
97
93
87
91
91
92
85
81
77
77
54
77
53
65
89
98
96
96
96
99

Low Clouds (% Sky Obscured)

47
48
54
60
66
67
65
70
70
71
67
59
49
45
41
37
37
36
37
28
17
5
14
22

Medium Clouds (% Sky Obscured)

29
27
36
34
27
17
5
3
3
0
3
6
31
3
9
5
3
4
2
2
2
3
2
12

High Clouds (% Sky Obscured)

100
100
100
100
86
71
56
63
68
74
52
27
5
5
2
15
28
53
83
94
83
87
92
96

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
1
1
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
10
10
9
8
8
7
6
7
7
7
8
10
11
12
12
13
13
13
12
11
10
9
9

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

93
93
93
92
93
93
93
96
95
95
95
92
83
73
61
55
50
47
45
47
58
68
77
85

Pressure (mb)

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

Ozone (du)

264
264
264
264
265
265
265
265
265
264
263
262
262
261
262
263
263
264
265
265
265
266
267
267

Friday 19

Waning Crescent 2%

05:04

18:44

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

Sun - Rise: 06:51, Set: 19:09, Transit: 13:00. Moon - Rise: 05:04, Set: 18:44. Civil Dark: 19:42 - 06:17. Nautical Dark: 20:22 - 05:38. Astro Dark: 21:06 - 04:56

Total Clouds (% Sky Obscured)

100
79
59
41
49
55
64
73
87
100
100
100
100
99
97
96
97
99
100
94
89
83
73
66

Low Clouds (% Sky Obscured)

30
29
32
38
43
46
57
58
65
72
68
65
62
71
81
91
84
78
70
56
40
24
24
23

Medium Clouds (% Sky Obscured)

32
32
25
35
2
20
16
14
25
39
39
38
52
59
67
73
81
81
79
53
26
0
0
0

High Clouds (% Sky Obscured)

100
70
43
15
17
8
32
57
68
72
100
100
100
87
75
62
68
70
72
57
36
20
15
15

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
3
18
12
9
3
0
15
12
6
10
11
2
4
18
27
36
35
27
24
18
8
13
11

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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

86
87
90
95
93
90
93
89
92
89
90
89
83
74
69
66
67
63
59
55
62
69
79
81

Pressure (mb)

1014
1015
1014
1014
1014
1014
1014
1013
1013
1013
1013
1013
1013
1013
1013
1012
1012
1012
1012
1012
1012
1012
1012
1013

Ozone (du)

266
267
268
268
268
268
268
270
272
273
273
274
275
277
277
277
279
284
290
296
300
304
307
310

Saturday 20

Waning Crescent 0%

06:19

18:54

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

Sun - Rise: 06:52, Set: 19:06, Transit: 12:59. Moon - Rise: 06:19, Set: 18:54. Civil Dark: 19:40 - 06:19. Nautical Dark: 20:19 - 05:40. Astro Dark: 21:03 - 04:58

Total Clouds (% Sky Obscured)

56
66
78
97
97
97
98
100
100
97
80
66
57
65
72
74
72
50
40
41
34
35
42
53

Low Clouds (% Sky Obscured)

23
36
49
60
53
45
39
40
40
41
45
48
52
60
63
66
52
36
23
20
17
19
32
44

Medium Clouds (% Sky Obscured)

0
2
8
22
26
26
30
24
23
22
10
6
3
28
49
72
72
50
40
41
34
35
42
53

High Clouds (% Sky Obscured)

17
44
65
80
85
90
90
90
90
90
60
32
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
7
5
3
4
4
5
5
6
7
8
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
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Very Light Rain
Very Light Rain
None
None
None
None

Precipitation Probability (%)

1
7
9
9
10
9
0
4
5
7
29
44
60
67
74
85
86
78
65
61
53
36
25
15

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0.4
0.4
0.5
0.7
0.7
0.5
0.3
0.3
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

10
10
10
9
8
8
7
7
6
6
5
6
8
10
11
11
12
13
13
12
12
11
10
10

Relative Humidity (%)

87
93
88
86
81
81
83
82
81
78
75
81
87
93
93
92
92
89
86
83
83
82
80
81

Pressure (mb)

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

Ozone (du)

312
315
317
320
322
321
320
319
320
321
322
323
324
325
327
328
330
330
331
332
333
334
335
335

Sunday 21

New Moon 1%

07:32

19:04

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

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: 20:17 - 05:41. Astro Dark: 20:58 - 05:00

Total Clouds (% Sky Obscured)

61
56
53
50
55
61
66
73
79
86
83
80
70
70
76
83
75
66
57
66
77
87

Low Clouds (% Sky Obscured)

57
52
47
41
50
59
66
73
79
86
79
72
67
66
70
73
64
56
47
58
68
78

Medium Clouds (% Sky Obscured)

61
56
53
50
43
21
1
1
0
0
0
0
0
3
8
17
16
18
25
26
27
23

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
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

Fog (%)

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

Precipitation Probability (%)

6
9
7
3
5
5
0
0
1
0
1
3
4
11
13
16
21
28
34
34
38
44

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

Wind Speed/Direction (mph)

3
3
3
3
4
4
4
5
5
6
6
7
8
9
10
11
12
12
12
13
12
11

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

81
83
82
85
85
87
90
90
91
93
93
86
81
75
72
68
65
61
58
54
61
67

Pressure (mb)

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

Ozone (du)

336
336
336
335
335
335
335
336
336
336
337
336
335
334
333
332
331
330
329
327
326
325

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

Generated: 15/09/25 21:34:29. Forecast: 15/09/25 to 21/09/25. Timezone: UTC+1.00