Clear Outside v1.0 - International Weather Forecasts For Astronomers

Tuesday 16

Waning Crescent 20%

01:25

18:09

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

Sun - Rise: 07:02, Set: 19:30, Transit: 13:16. Moon - Rise: 01:25, Set: 18:09. Civil Dark: 20:05 - 06:29. Nautical Dark: 20:43 - 05:51. Astro Dark: 21:24 - 05:10

Total Clouds (% Sky Obscured)

68
75
81
99
100
96
96
94
85
93
100
99
99
97
96
97
97
92
84
93
79
75
81
83

Low Clouds (% Sky Obscured)

68
35
48
94
86
82
87
88
75
83
100
99
99
91
94
95
90
87
75
84
78
74
80
82

Medium Clouds (% Sky Obscured)

68
75
81
96
89
89
86
77
24
34
37
45
53
50
48
40
54
40
20
23
0
0
1
0

High Clouds (% Sky Obscured)

68
75
81
95
100
45
6
4
7
3
0
0
0
0
0
0
0
0
0
0
0
0
0
0

ISS Passover

Visibility (miles)

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

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

Precipitation Probability (%)

66
73
87
73
73
52
20
6
7
16
16
14
16
16
9
10
10
1
11
9
4
17
9
2

Precipitation Amount (mm)

0.7
0.4
0.6
0.5
0.5
0.3
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

11
12
14
20
24
27
29
30
30
29
28
27
26
25
24
22
22
22
23
22
22
22
21
21

Chance of Frost

Temperature (°C)

15
15
15
15
15
15
15
16
16
16
16
16
16
17
17
17
17
17
17
17
17
17
17
17

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

90
89
90
92
93
93
93
90
90
92
93
93
95
93
93
93
89
90
92
90
92
90
92
93

Pressure (mb)

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

Ozone (du)

265
265
265
264
263
262
262
261
262
263
264
266
267
268
269
271
272
270
270
270
269
269
268
269

Wednesday 17

Waning Crescent 12%

02:46

18:29

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

Sun - Rise: 07:03, Set: 19:28, Transit: 13:16. Moon - Rise: 02:46, Set: 18:29. Civil Dark: 20:02 - 06:31. Nautical Dark: 20:41 - 05:52. Astro Dark: 21:22 - 05:12

Total Clouds (% Sky Obscured)

81
61
58
86
88
60
66
66
75
70
71
76
60
81
92
97
92
85
96
100
88
83
98
100

Low Clouds (% Sky Obscured)

81
61
58
83
84
56
61
64
75
70
71
76
60
80
82
86
81
76
82
68
63
61
55
66

Medium Clouds (% Sky Obscured)

0
0
0
4
5
0
1
1
0
0
0
0
0
12
32
56
42
29
66
18
25
33
38
10

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
1
22
55
50
60
65
65
65
65
100
88
83
98
99

ISS Passover

Visibility (miles)

9
9
9
9
9
9
7
8
9
9
9
9
9
9
8
7
7
7
7
7
7
7
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
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

15
2
3
12
18
15
16
2
1
0
0
0
4
3
3
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)

20
20
20
20
22
20
21
21
21
21
21
20
20
20
20
21
22
22
22
21
21
18
17
16

Chance of Frost

Temperature (°C)

17
17
17
17
17
17
17
17
17
16
16
16
16
17
17
17
18
18
18
18
18
17
17
17

Feels Like (°C)

14
14
14
14
13
14
14
13
13
14
14
13
12
13
13
13
13
14
14
14
14
14
14
14

Dew Point (°C)

16
16
16
16
16
16
15
16
15
16
16
16
16
16
16
16
15
15
15
16
16
16
16
15

Relative Humidity (%)

93
93
93
95
93
93
92
93
90
95
95
96
95
93
93
89
86
85
85
86
86
89
90
92

Pressure (mb)

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

Ozone (du)

269
269
269
269
268
267
266
266
266
266
265
265
265
266
266
268
268
268
268
267
267
266
265
266

Thursday 18

Waning Crescent 6%

04:06

18:44

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

Sun - Rise: 07:05, Set: 19:26, Transit: 13:15. Moon - Rise: 04:06, Set: 18:44. Civil Dark: 19:58 - 06:32. Nautical Dark: 20:39 - 05:54. Astro Dark: 21:19 - 05:14

Total Clouds (% Sky Obscured)

100
96
85
95
86
93
94
96
100
100
98
99
99
97
100
100
100
87
80
69
81
90
96
86

Low Clouds (% Sky Obscured)

77
77
84
89
86
82
80
83
83
88
86
81
83
83
77
62
0
12
25
37
43
52
60
63

Medium Clouds (% Sky Obscured)

50
20
2
28
2
2
2
2
2
1
1
19
26
7
30
41
29
31
27
23
31
43
53
48

High Clouds (% Sky Obscured)

100
95
52
22
29
67
56
47
65
44
72
61
54
68
95
98
100
66
75
66
80
66
72
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

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
1
1
4
6
3
10

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

95
95
93
93
92
93
93
95
95
93
95
95
95
90
86
82
81
78
77
78
79
83
85
86

Pressure (mb)

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

Ozone (du)

266
265
264
263
263
263
263
264
264
265
265
266
266
267
267
266
266
268
269
271
272
271
272
273

Friday 19

Waning Crescent 2%

05:22

18:57

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

Sun - Rise: 07:06, Set: 19:23, Transit: 13:15. Moon - Rise: 05:22, Set: 18:57. Civil Dark: 19:56 - 06:34. Nautical Dark: 20:36 - 05:56. Astro Dark: 21:16 - 05:16

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
100
100
100
100
83
68
56
62
65
65
73
81
86
40

Low Clouds (% Sky Obscured)

66
69
69
73
78
81
90
86
90
90
90
81
72
63
59
54
49
34
53
57
64
70
46
35

Medium Clouds (% Sky Obscured)

51
50
58
74
71
79
76
79
98
100
100
94
89
83
77
68
56
62
65
60
63
64
70
21

High Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
100
100
100
100
83
31
50
55
55
36
0
0
0
0

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
8
9
8
4
7
5
3
2
0
3
9
9
7
2
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
Very Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Moderate Rain
Light Rain
Light Rain
Light Rain
Light Rain
Very Light Rain
Very Light Rain
None
Light Rain
Light Rain
Very Light Rain
None
None
None

Precipitation Probability (%)

19
29
58
86
95
95
95
95
95
95
95
95
95
95
95
80
66
61
79
91
70
32
16
15

Precipitation Amount (mm)

0
0
0.3
0.6
0.8
1.2
1.5
1.9
1.8
2.3
3.1
2.4
1.3
1
0.7
0.3
0.2
0
0.4
0.7
0.3
0
0
0

Wind Speed/Direction (mph)

13
13
13
13
13
13
13
14
14
7
9
15
14
14
14
17
17
19
19
20
19
18
18
17

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

92
92
92
93
95
95
96
95
96
98
96
98
98
96
98
96
93
93
93
93
90
90
86
83

Pressure (mb)

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

Ozone (du)

272
272
272
272
273
273
274
273
275
273
273
273
274
275
276
275
276
277
278
280
285
293
298
300

Saturday 20

Waning Crescent 0%

06:35

19:09

20 OK
21 OK
22 OK
23 OK
00 Bad
01 OK
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

Sun - Rise: 07:08, Set: 19:21, Transit: 13:14. Moon - Rise: 06:35, Set: 19:09. Civil Dark: 19:53 - 06:35. Nautical Dark: 20:34 - 05:57. Astro Dark: 21:14 - 05:18

Total Clouds (% Sky Obscured)

22
4
8
12
19
32
63
81
77
71
64
55
62
71
62
48
32
38
48
62
70
75
82
82

Low Clouds (% Sky Obscured)

19
4
8
12
19
29
55
68
68
63
58
49
57
65
56
44
32
36
39
40
43
50
58
53

Medium Clouds (% Sky Obscured)

11
0
0
0
0
8
13
21
12
7
4
9
11
13
10
7
5
3
3
3
7
11
15
37

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
6
11
16
14

ISS Passover

Visibility (miles)

9
9
9
9
5
9
9
9
9
9
9
9
9
9
9
9
8
8
8
9
9
9
9
8

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
Light Rain
Very Light Rain
Very Light Rain
Very Light Rain
Very Light Rain
Very Light Rain
Very Light Rain
Very Light Rain
Very Light Rain
Light Rain
Light Rain

Precipitation Probability (%)

20
22
15
33
21
16
21
30
42
42
34
47
55
64
64
64
63
65
66
64
69
73
78
71

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0.4
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.4
0.4

Wind Speed/Direction (mph)

16
16
16
16
19
19
19
18
18
17
18
20
10
12
13
13
14
17
16
16
17
16
15
14

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

84
84
83
83
80
78
77
74
75
75
71
75
77
79
82
80
79
78
79
80
83
81
79
79

Pressure (mb)

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

Ozone (du)

302
307
310
312
313
318
319
322
323
323
323
324
324
325
325
325
325
325
325
326
326
326
325
325

Sunday 21

New Moon 1%

07:47

19:20

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

Sun - Rise: 07:09, Set: 19:19, Transit: 13:14. Moon - Rise: 07:47, Set: 19:20. Civil Dark: 19:51 - 06:37. Nautical Dark: 20:32 - 05:59. Astro Dark: 21:11 - 05:19

Total Clouds (% Sky Obscured)

78
77
75
74
73
76
79
78
60
44
30
29
24
19
29
38
48
47
46
46
40
29
28
25

Low Clouds (% Sky Obscured)

48
47
48
42
41
35
28
22
17
12
8
8
8
9
11
11
11
21
31
42
36
29
27
25

Medium Clouds (% Sky Obscured)

57
63
59
45
40
40
41
41
36
35
24
20
14
8
12
17
29
36
46
46
40
29
28
25

High Clouds (% Sky Obscured)

12
8
4
0
0
14
27
41
29
18
9
10
7
3
2
1
1
24
46
46
40
29
28
25

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
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 (%)

58
37
42
41
31
40
37
14
18
16
3
3
3
0
2
3
1
19
22
19
40
44
34
49

Precipitation Amount (mm)

0.2
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
13
13
14
15
16
17
17
18
18
18
18
19
20
21
20
21
21
21
21
21
20
19
18

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

79
77
77
76
75
73
73
71
71
72
72
73
71
68
67
65
65
63
62
61
61
60
58
58

Pressure (mb)

1019
1020
1021
1021
1021
1021
1021
1021
1022
1022
1022
1023
1023
1023
1024
1024
1024
1023
1023
1023
1023
1023
1023
1023

Ozone (du)

326
326
327
327
327
327
327
327
327
326
326
326
326
326
326
326
327
327
327
326
325
323
321
319

Monday 22

Waxing Crescent 3%

08:58

19:32

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
12 Bad

Sun - Rise: 07:11, Set: 19:17, Transit: 13:14. Moon - Rise: 08:58, Set: 19:32. Civil Dark: 19:49 - 06:39. Nautical Dark: 20:29 - 06:00. Astro Dark: 21:09 - 05:21

Total Clouds (% Sky Obscured)

32
38
57
78
100
95
89
84
74
65
58
49
40
35
32
29
26

Low Clouds (% Sky Obscured)

32
31
54
77
100
95
89
84
74
65
58
49
40
35
32
29
26

Medium Clouds (% Sky Obscured)

32
38
44
45
41
40
30
30
30
35
40
46
40
35
32
29
26

High Clouds (% Sky Obscured)

32
37
28
19
1
4
8
12
35
58
58
43
28
23
23
18
23

ISS Passover

Visibility (miles)

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

Precipitation Type

None
None
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

55
57
92
95
95
95
95
58
52
43
25
45
53
58
51
45
40

Precipitation Amount (mm)

0
0
0.6
1.1
2
1.3
0.7
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

19
19
19
20
20
21
20
19
16
15
14
14
15
15
15
14
12

Chance of Frost

Temperature (°C)

12
12
12
12
12
12
12
12
12
12
12
11
11
12
13
13
13

Feels Like (°C)

8
8
8
8
8
8
7
8
8
8
8
8
8
8
8
9
9

Dew Point (°C)

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

Relative Humidity (%)

58
60
61
62
62
64
65
67
67
68
70
71
67
64
61
64
70

Pressure (mb)

1023
1023
1023
1023
1023
1022
1022
1022
1021
1021
1021
1021
1021
1022
1022
1022
1021

Ozone (du)

318
316
314
313
312
311
311
310
310
309
309
308
308
308
309
309
310

Forecast for Penzance, Cornwall, United Kingdom (50.12,-5.54)

Generated: 16/09/25 20:25:03. Forecast: 16/09/25 to 22/09/25. Timezone: UTC+1.00