Clear Outside v1.0 - International Weather Forecasts For Astronomers

Thursday 18

Waning Crescent 12%

02:24

18:19

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
21 Bad
22 Bad
23 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: 21:08 - 04:53

Total Clouds (% Sky Obscured)

98
100
100
100
100
100
97
93
90
92
97
93
100
100
100
100
98
55
94
100
100
100
100
100

Low Clouds (% Sky Obscured)

98
98
100
99
100
92
93
88
84
86
95
93
77
78
74
73
60
55
71
66
65
68
72
70

Medium Clouds (% Sky Obscured)

57
68
81
52
25
48
50
23
19
30
33
1
1
1
0
11
11
1
1
8
0
7
37
0

High Clouds (% Sky Obscured)

13
0
0
0
0
3
26
10
7
11
32
68
43
46
59
82
97
55
92
100
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

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
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
2
1
1
1
0
16
4
2
7
15
1
3
2
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

92
93
93
95
93
95
95
95
93
89
85
84
78
70
68
70
68
71
77
86
92
93
95
93

Pressure (mb)

1016
1017
1017
1017
1016
1017
1016
1017
1017
1018
1018
1018
1019
1019
1019
1019
1018
1018
1019
1019
1019
1020
1020
1020

Ozone (du)

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

Friday 19

Waning Crescent 6%

03:46

18:32

00 Bad
01 Bad
02 Bad
03 Bad
04 Bad
05 Bad
06 Bad
07 Bad
08 Bad
09 Bad
10 OK
11 OK
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad
17 Bad
18 Bad
19 Bad
20 Bad
21 Bad
22 Bad
23 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: 21:06 - 04:55

Total Clouds (% Sky Obscured)

100
100
100
89
71
87
76
89
90
56
31
41
50
60
48
66
74
86
90
100
100
100
100
99

Low Clouds (% Sky Obscured)

80
71
68
73
71
74
76
89
90
56
31
41
44
41
47
52
51
53
67
72
40
47
32
31

Medium Clouds (% Sky Obscured)

0
2
2
2
0
3
3
2
2
2
3
6
6
40
4
3
2
1
0
0
0
4
17
13

High Clouds (% Sky Obscured)

100
100
100
88
71
87
74
55
55
55
31
41
37
50
21
28
33
38
35
72
98
92
100
92

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

95
95
95
96
96
95
95
95
93
85
77
68
63
57
52
48
48
51
57
71
78
79
82
83

Pressure (mb)

1020
1020
1020
1019
1019
1019
1019
1019
1019
1019
1018
1018
1017
1017
1016
1016
1015
1015
1015
1016
1016
1016
1016
1015

Ozone (du)

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

Saturday 20

Waning Crescent 2%

05:04

18:44

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
21 Bad
22 Bad
23 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: 21:03 - 04:56

Total Clouds (% Sky Obscured)

100
100
54
61
65
68
94
100
92
95
99
96
100
100
79
77
85
65
82
81
71
72
74
73

Low Clouds (% Sky Obscured)

31
49
54
61
65
68
78
72
65
68
72
93
86
75
43
38
40
18
31
32
68
72
46
73

Medium Clouds (% Sky Obscured)

0
0
0
0
0
59
61
98
92
92
93
96
100
24
13
8
43
5
20
75
71
70
70
70

High Clouds (% Sky Obscured)

93
100
25
15
15
20
56
100
26
69
88
75
29
100
15
12
15
17
15
15
2
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
8
9
9
9

Fog (%)

0
0
0
42
100
5
100
100
100
1
1
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
15
5
3
0
0
0
1
4
15
12
12
31
8
6
20
0
0
13
28
23
5
7

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)

4
5
4
4
4
4
4
4
3
5
8
10
11
11
12
14
14
14
11
9
10
10
11
12

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

84
83
83
83
79
79
78
76
74
69
67
61
64
64
56
52
48
51
60
69
69
75
81
89

Pressure (mb)

1015
1014
1014
1013
1012
1012
1012
1011
1011
1011
1011
1011
1010
1010
1009
1008
1008
1009
1009
1009
1010
1010
1010
1010

Ozone (du)

264
265
265
265
263
263
263
262
262
262
262
262
262
263
263
265
267
268
267
268
268
270
273
274

Sunday 21

New Moon 0%

06:19

18:54

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
21 Bad
22 Bad
23 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: 21:00 - 04:58

Total Clouds (% Sky Obscured)

72
71
74
77
47
46
53
48
53
59
58
67
75
83
89
95
68
54
53
63
70
84
82
81

Low Clouds (% Sky Obscured)

72
64
52
48
47
46
53
48
53
57
58
57
55
66
77
89
68
54
53
54
49
47
45
52

Medium Clouds (% Sky Obscured)

65
61
70
74
3
8
13
19
20
22
24
21
20
25
27
31
49
51
53
63
57
72
63
54

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
3
4
2
1

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
8
9
9
9
9
9
9
9
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

Light Rain
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 (%)

60
14
2
0
1
1
0
1
1
3
9
30
23
10
10
18
24
28
22
20
22
31
38
46

Precipitation Amount (mm)

0.4
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
14
10
10
9
7
6
5
5
7
8
8
9
9
9
9
9
9
8
8
8
9
9
8

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

11
10
9
9
9
10
9
9
10
9
9
8
6
6
5
5
6
5
6
8
8
8
8
9

Relative Humidity (%)

86
86
86
87
88
95
95
95
90
81
72
62
55
53
50
51
55
55
61
71
77
81
84
88

Pressure (mb)

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

Ozone (du)

273
274
275
274
276
277
279
280
280
282
283
284
284
287
289
291
293
295
298
300
302
302
301
300

Monday 22

Waxing Crescent 1%

07:32

19:04

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
21 Bad
22 OK
23 OK

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)

74
79
83
86
84
79
76
76
76
76
70
65
61
69
79
89
77
68
58
73
58
49
37
40

Low Clouds (% Sky Obscured)

43
48
48
46
56
56
59
61
64
63
58
56
55
63
73
82
55
27
0
32
30
27
32
37

Medium Clouds (% Sky Obscured)

51
44
34
29
80
72
64
54
51
52
43
43
38
27
38
77
47
41
37
7
5
3
2
1

High Clouds (% Sky Obscured)

0
0
0
0
9
1
0
0
0
0
3
5
7
8
5
4
4
3
3
22
20
18
9
8

ISS Passover

Visibility (miles)

8
3
4
9
2
9
3
5
5
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
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

48
48
42
19
16
25
38
36
26
14
6
2
6
7
11
11
14
2
0
2
2
0
1
1

Precipitation Amount (mm)

0.2
0.2
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

88
95
98
96
98
93
90
90
91
88
83
75
69
62
61
66
68
72
68
69
70
69
70
73

Pressure (mb)

1014
1015
1015
1015
1015
1015
1016
1017
1017
1018
1018
1018
1018
1018
1018
1018
1018
1018
1019
1019
1021
1021
1022
1022

Ozone (du)

299
300
307
309
310
309
308
306
306
306
306
306
307
308
309
309
309
310
310
311
311
312
312
312

Tuesday 23

Waxing Crescent 3%

08:44

19:14

00 OK
01 OK
02 OK
03 OK
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

Sun - Rise: 06:56, Set: 19:02, Transit: 12:59. Moon - Rise: 08:44, Set: 19:14. Civil Dark: 19:35 - 06:22. Nautical Dark: 20:14 - 05:43. Astro Dark: 20:55 - 05:02

Total Clouds (% Sky Obscured)

46
45
45
44
60
76
93
95
98
100
97
95
92
93
86
79
70
63
61
65
80
100
100
100

Low Clouds (% Sky Obscured)

42
39
37
33
32
33
31
36
38
41
36
36
35
27
24
21
24
27
29
43
57
65
55
51

Medium Clouds (% Sky Obscured)

1
3
6
8
12
19
20
20
13
15
23
30
38
40
43
54
37
31
20
15
10
10
10
10

High Clouds (% Sky Obscured)

7
5
3
0
18
24
36
61
82
97
68
36
0
4
8
12
42
63
61
65
60
60
56
66

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
11
12
9
18
21
20
22
22
23
21
17
6
15
18
21
31
35

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

77
78
81
82
85
87
90
90
79
70
63
57
52
47
47
46
46
50
55
61
63
64
65
66

Pressure (mb)

1022
1021
1021
1021
1021
1021
1021
1021
1021
1021
1021
1021
1021
1021
1020
1020
1020
1020
1019
1019
1020
1020
1020
1020

Ozone (du)

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

Wednesday 24

Waxing Crescent 7%

09:57

19:26

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 OK
15 Good
16 OK
17 OK
18 OK
19 OK
20 OK
21 Bad
22 Bad
23 Bad

Sun - Rise: 06:57, Set: 19:00, Transit: 12:58. Moon - Rise: 09:57, Set: 19:26. Civil Dark: 19:33 - 06:24. Nautical Dark: 20:12 - 05:45. Astro Dark: 20:53 - 05:04

Total Clouds (% Sky Obscured)

100
96
92
92
92
89
82
71
68
60
54
48
47
29
20
13
15
14
20
14
12
15
14
13

Low Clouds (% Sky Obscured)

50
53
56
59
66
72
79
71
67
60
54
48
47
29
20
13
15
14
15
14
12
15
14
13

Medium Clouds (% Sky Obscured)

10
15
15
15
15
15
10
9
9
12
19
18
20
21
20
13
15
14
20
14
12
15
14
13

High Clouds (% Sky Obscured)

66
62
61
55
68
80
80
66
51
41
27
14
1
0
0
0
15
14
20
14
12
15
14
10

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
Very Light Rain
Very Light Rain

Precipitation Probability (%)

33
34
31
24
39
47
41
37
35
20
23
19
8
7
5
1
4
5
5
17
30
43
54
63

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
0.2
0.3

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

9
9
7
7
7
7
7
6
5
6
6
7
8
8
14
14
13
14
14
15
9
10
10
10

Dew Point (°C)

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

Relative Humidity (%)

69
71
75
79
84
87
90
93
82
74
68
62
56
49
48
46
44
49
54
59
60
63
64
67

Pressure (mb)

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

Ozone (du)

308
308
307
307
306
305
304
302
301
300
300
299
299
298
298
299
299
299
298
298
298
298
298
297

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

Generated: 18/09/25 03:56:23. Forecast: 18/09/25 to 24/09/25. Timezone: UTC+1.00