Clear Outside v1.0 - International Weather Forecasts For Astronomers

Monday 15

Waning Crescent 30%

00:01

17:00

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 OK
00 Bad
01 Bad
02 Bad
03 Bad
04 Bad
05 Bad
06 Bad
07 Bad
08 Bad
09 Bad
10 Bad

Sun - Rise: 06:58, Set: 19:33, Transit: 13:15. Moon - Rise: 00:01, Set: 17:00. Civil Dark: 20:05 - 06:25. Nautical Dark: 20:45 - 05:46. Astro Dark: 21:26 - 05:05

Total Clouds (% Sky Obscured)

60
65
70
67
67
48
42
44
58
54
75
69
38
68
66
90
98
96
100
100
100
100
95
100

Low Clouds (% Sky Obscured)

60
65
58
56
58
48
42
44
58
54
54
49
38
50
49
58
55
52
49
56
45
49
61
82

Medium Clouds (% Sky Obscured)

27
26
21
16
12
0
0
0
0
0
23
20
0
0
16
20
22
17
39
36
66
33
67
56

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
2
68
20
79
96
93
100
100
100
100
71
99

ISS Passover

Visibility (miles)

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

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
None
None
None

Precipitation Probability (%)

71
69
60
45
37
31
19
5
11
13
15
17
8
18
6
17
21
16
11
9
18
19
27
25

Precipitation Amount (mm)

0.4
0.4
0.3
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)

24
23
25
25
26
25
24
23
22
20
20
19
18
17
16
16
15
15
14
13
11
10
10
12

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

79
79
79
77
77
78
79
79
79
80
80
80
80
78
79
78
78
76
75
75
76
79
78
73

Pressure (mb)

1010
1010
1010
1011
1012
1012
1013
1013
1014
1015
1016
1016
1017
1017
1018
1018
1018
1018
1019
1019
1019
1020
1020
1020

Ozone (du)

312
318
318
317
316
315
314
313
313
311
308
306
303
303
301
299
297
295
295
294
290
289
286
284

Tuesday 16

Waning Crescent 20%

01:21

17:40

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
04 Bad
05 Bad
06 Bad
07 Bad
08 Bad
09 Bad
10 Bad

Sun - Rise: 06:59, Set: 19:30, Transit: 13:14. Moon - Rise: 01:21, Set: 17:40. Civil Dark: 20:03 - 06:27. Nautical Dark: 20:42 - 05:48. Astro Dark: 21:23 - 05:07

Total Clouds (% Sky Obscured)

99
100
99
100
100
100
99
100
100
100
100
100
100
97
98
99
99
100
100
100
99
98
98
93

Low Clouds (% Sky Obscured)

65
70
66
88
73
72
51
49
52
51
69
56
74
82
76
70
93
100
100
100
99
95
87
76

Medium Clouds (% Sky Obscured)

67
67
64
65
61
90
64
98
90
98
99
95
94
92
91
96
95
100
97
96
85
40
35
39

High Clouds (% Sky Obscured)

96
100
92
100
92
100
97
86
100
100
100
96
95
54
65
75
67
53
3
0
0
0
0
1

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
7
7
8
9
8
9
5
7
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
Very Light Rain
Light Rain
Light Rain
Very Light Rain
None
Very Light Rain
Very Light Rain
Light Rain
None
None
None
None
None
None
None
None

Precipitation Probability (%)

14
19
33
43
32
32
43
38
57
79
95
64
44
68
67
75
40
15
30
44
26
22
23
13

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0.2
0.5
0.9
0.3
0
0.3
0.3
0.4
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

14
12
12
12
12
12
11
10
8
9
9
10
14
16
17
19
20
20
21
21
20
19
18
17

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

68
67
66
65
66
69
72
76
83
89
93
93
92
90
93
92
92
92
92
92
93
92
90
90

Pressure (mb)

1021
1021
1021
1021
1020
1020
1019
1019
1019
1019
1019
1018
1017
1016
1016
1015
1014
1014
1013
1013
1013
1014
1014
1014

Ozone (du)

282
281
279
278
277
275
272
271
271
269
268
267
266
264
263
261
261
262
262
263
263
265
265
266

Wednesday 17

Waning Crescent 12%

02:43

18:08

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
04 Bad
05 Bad
06 Bad
07 Bad
08 Bad
09 Bad
10 Bad

Sun - Rise: 07:01, Set: 19:28, Transit: 13:14. Moon - Rise: 02:43, Set: 18:08. Civil Dark: 20:01 - 06:28. Nautical Dark: 20:40 - 05:50. Astro Dark: 21:21 - 05:09

Total Clouds (% Sky Obscured)

90
96
99
92
97
97
90
93
96
95
89
94
94
94
90
95
100
100
60
63
92
58
57
51

Low Clouds (% Sky Obscured)

67
71
74
55
56
74
64
73
65
69
70
69
69
52
65
77
90
88
60
63
88
58
57
51

Medium Clouds (% Sky Obscured)

22
60
65
37
33
48
38
32
36
26
25
30
34
40
37
43
50
49
43
47
48
54
55
51

High Clouds (% Sky Obscured)

1
35
30
9
31
2
1
1
13
0
0
10
3
10
6
10
14
25
29
38
36
31
24
21

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
Very Light Rain
Very Light Rain
Very Light Rain
Light Rain

Precipitation Probability (%)

17
13
10
8
6
6
10
9
4
19
11
6
4
6
14
17
21
39
51
62
61
57
55
67

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.2
0.2
0.3
0.3
0.4

Wind Speed/Direction (mph)

16
17
18
17
16
17
15
14
13
11
11
10
10
10
9
9
9
8
7
7
7
8
12
16

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

89
86
82
83
85
83
86
87
89
93
92
93
93
92
90
89
86
87
93
96
96
93
90
85

Pressure (mb)

1015
1015
1015
1015
1015
1015
1015
1015
1016
1016
1016
1016
1016
1016
1016
1016
1016
1016
1016
1016
1016
1016
1016
1016

Ozone (du)

268
270
270
269
268
269
268
266
266
265
265
264
262
262
261
262
261
261
262
263
263
263
263
263

Thursday 18

Waning Crescent 12%

04:03

18:28

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
04 Bad
05 Bad
06 Bad
07 Bad
08 Bad
09 Bad
10 Bad

Sun - Rise: 07:03, Set: 19:26, Transit: 13:13. Moon - Rise: 04:03, Set: 18:28. Civil Dark: 19:59 - 06:30. Nautical Dark: 20:37 - 05:51. Astro Dark: 21:18 - 05:11

Total Clouds (% Sky Obscured)

51
94
99
100
100
98
95
92
92
94
44
37
45
44
62
49
46
93
34
34
97
98
99
97

Low Clouds (% Sky Obscured)

51
86
81
76
71
70
61
54
49
48
44
37
45
44
59
49
46
58
34
34
76
86
89
87

Medium Clouds (% Sky Obscured)

51
49
64
94
99
92
76
60
73
83
18
16
20
18
16
16
14
11
12
10
23
27
27
26

High Clouds (% Sky Obscured)

16
30
70
88
100
65
69
69
74
45
5
3
9
11
33
19
24
58
14
6
47
57
76
63

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

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 (%)

84
95
95
82
63
52
39
28
23
17
13
13
11
3
11
11
7
8
8
10
9
9
4
11

Precipitation Amount (mm)

0.6
1.1
1
0.7
0.4
0.3
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

17
17
18
17
17
16
15
13
12
12
11
11
11
11
12
12
12
12
12
11
11
11
11
12

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

80
78
76
77
80
81
84
86
90
93
96
96
96
96
96
96
96
95
95
95
95
93
92
89

Pressure (mb)

1016
1017
1017
1017
1017
1017
1017
1017
1017
1018
1017
1018
1018
1018
1018
1017
1017
1017
1016
1017
1017
1017
1017
1018

Ozone (du)

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

Friday 19

Waning Crescent 6%

05:19

18:43

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
04 Bad
05 Bad
06 Bad
07 Bad
08 Bad
09 Bad
10 Bad

Sun - Rise: 07:04, Set: 19:24, Transit: 13:13. Moon - Rise: 05:19, Set: 18:43. Civil Dark: 19:56 - 06:32. Nautical Dark: 20:35 - 05:53. Astro Dark: 21:15 - 05:13

Total Clouds (% Sky Obscured)

94
91
92
92
92
95
97
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

82
80
64
67
69
63
58
50
50
49
52
60
73
85
81
74
67
60
56
56
52
50
49
44

Medium Clouds (% Sky Obscured)

64
38
65
58
1
36
48
51
59
52
48
54
59
67
57
44
34
50
70
91
91
92
92
84

High Clouds (% Sky Obscured)

54
52
52
43
43
62
81
100
84
62
38
37
41
44
73
86
100
100
100
100
100
100
100
96

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
8
7
6
6
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 (%)

5
1
2
2
1
0
0
0
5
15
29
24
19
5
5
6
10
11
10
8
18
19
27
17

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

90
92
88
82
81
81
81
81
85
83
82
79
83
85
87
90
93
98
98
98
98
93
92
87

Pressure (mb)

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

Ozone (du)

263
263
264
265
265
266
265
266
267
267
268
269
269
270
270
271
272
273
274
275
276
276
275
275

Saturday 20

Waning Crescent 2%

06:33

18:56

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
04 Bad
05 Bad
06 Bad
07 Bad
08 Bad
09 Bad
10 Bad

Sun - Rise: 07:06, Set: 19:21, Transit: 13:13. Moon - Rise: 06:33, Set: 18:56. Civil Dark: 19:54 - 06:33. Nautical Dark: 20:33 - 05:55. Astro Dark: 21:13 - 05:15

Total Clouds (% Sky Obscured)

99
99
90
82
74
71
69
70
62
51
41
43
48
56
51
40
29
33
37
39
51
64
76
78

Low Clouds (% Sky Obscured)

37
34
40
48
54
60
65
69
60
51
41
42
44
53
51
40
28
32
33
38
38
38
38
44

Medium Clouds (% Sky Obscured)

77
70
59
50
40
43
56
47
33
16
0
0
0
0
0
0
0
0
0
0
19
39
58
59

High Clouds (% Sky Obscured)

93
89
59
30
0
0
0
7
12
15
1
0
0
0
0
0
0
0
0
0
4
9
13
19

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 (%)

21
22
23
19
9
20
27
33
26
21
19
21
23
24
28
29
28
31
30
24
38
43
41
55

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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

16
16
16
16
15
15
15
14
15
13
13
12
12
12
13
9
9
8
8
9
9
9
9
8

Dew Point (°C)

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

Relative Humidity (%)

86
82
81
83
87
93
92
90
89
87
87
87
87
89
90
89
89
89
87
89
89
89
89
89

Pressure (mb)

1010
1009
1009
1009
1009
1009
1009
1009
1009
1010
1010
1010
1010
1010
1010
1009
1009
1009
1009
1009
1008
1009
1009
1009

Ozone (du)

274
274
274
275
276
277
280
282
285
287
290
293
296
299
302
304
305
306
308
311
313
312
311
311

Sunday 21

New Moon 0%

07:45

19:07

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

Sun - Rise: 07:07, Set: 19:19, Transit: 13:12. Moon - Rise: 07:45, Set: 19:07. Civil Dark: 19:52 - 06:35. Nautical Dark: 20:30 - 05:56. Astro Dark: 21:10 - 05:16

Total Clouds (% Sky Obscured)

80
82
76
70
63
68
73
78
72
66
61
61
62
64

Low Clouds (% Sky Obscured)

50
56
50
45
42
43
37
38
38
44
51
42
35
28

Medium Clouds (% Sky Obscured)

61
61
46
32
19
23
25
26
25
23
24
28
33
37

High Clouds (% Sky Obscured)

21
18
17
9
5
3
3
7
9
10
12
21
25
29

ISS Passover

Visibility (miles)

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

Precipitation Type

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

Precipitation Probability (%)

70
85
86
82
75
68
56
42
42
37
33
30
24
15

Precipitation Amount (mm)

0.3
0.5
0.5
0.5
0.4
0.4
0.2
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

9
9
9
10
10
10
10
10
9
8
8
9
9
9

Dew Point (°C)

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

Relative Humidity (%)

87
86
83
85
85
86
87
87
89
89
87
86
87
87

Pressure (mb)

1009
1009
1010
1009
1009
1009
1010
1010
1010
1010
1011
1011
1011
1011

Ozone (du)

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

Forecast for Mawgan Porth, Cornwall, United Kingdom (50.46,-5.03)

Generated: 15/09/25 11:31:07. Forecast: 15/09/25 to 21/09/25. Timezone: UTC+1.00