Clear Outside v1.0 - International Weather Forecasts For Astronomers

Friday 5

Waning Gibbous 98%

17:30

10:20

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: 08:06, Set: 16:20, Transit: 12:13. Moon - Rise: 17:30, Set: 10:20. Civil Dark: 16:58 - 07:28. Nautical Dark: 17:39 - 06:47. Astro Dark: 18:18 - 06:08

Total Clouds (% Sky Obscured)

66
58
55
91
89
91
81
76
82
91
80
85
80
78
98
100
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

56
58
55
52
50
52
58
57
62
64
65
67
63
66
48
38
8
6
37
57
52
75
52
56

Medium Clouds (% Sky Obscured)

3
23
55
63
86
65
29
37
71
32
17
73
72
28
21
30
65
96
86
50
74
77
73
100

High Clouds (% Sky Obscured)

0
0
44
87
3
0
19
0
5
0
0
0
0
0
38
100
100
100
100
78
100
100
100
100

ISS Passover

Visibility (miles)

6
9
8
9
9
9
9
8
8
9
8
7
9
9
9
9
9
9
9
9
9
8
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
Very Light Rain
Very Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Very Light Rain
Very Light Rain
Light Rain
Very Light Rain
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

90
93
94
65
63
70
65
68
67
64
65
64
54
36
29
27
22
13
20
22
26
37
34
24

Precipitation Amount (mm)

0.4
0.8
1
0.3
0.3
0.4
0.4
0.4
0.4
0.3
0.3
0.4
0.3
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

26
28
28
33
35
35
34
33
33
34
35
35
35
34
33
32
31
29
28
28
24
21
20
18

Chance of Frost

Temperature (°C)

11
11
11
11
11
11
11
11
11
11
11
11
11
11
11
11
12
12
12
12
12
12
12
12

Feels Like (°C)

2
2
2
1
1
1
1
2
2
2
1
1
2
2
2
3
3
4
4
4
5
6
6
6

Dew Point (°C)

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

Relative Humidity (%)

83
79
76
80
81
83
83
83
83
83
83
83
83
83
81
81
81
79
77
79
80
83
83
86

Pressure (mb)

992
993
993
993
993
993
993
994
994
995
995
996
998
999
1000
1000
1001
1001
1002
1002
1003
1003
1004
1004

Ozone (du)

302
303
299
292
289
289
290
292
290
290
293
298
298
299
295
294
292
293
290
291
291
290
290
291

Saturday 6

Waning Gibbous 93%

18:54

11:08

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: 08:07, Set: 16:20, Transit: 12:13. Moon - Rise: 18:54, Set: 11:08. Civil Dark: 16:58 - 07:29. Nautical Dark: 17:39 - 06:48. Astro Dark: 18:18 - 06:09

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
97
100
100
100
100
100
100
100
100
100
100
100
100
98
72
99
95
100

Low Clouds (% Sky Obscured)

63
93
85
83
89
94
91
87
92
87
91
98
96
78
75
69
76
76
80
83
69
57
69
55

Medium Clouds (% Sky Obscured)

95
100
100
100
100
100
91
96
100
100
98
88
100
100
100
90
95
100
100
68
0
1
36
26

High Clouds (% Sky Obscured)

100
100
55
100
100
100
84
100
100
100
100
100
100
99
100
93
100
83
100
89
4
85
8
80

ISS Passover

Visibility (miles)

9
9
9
9
3
3
2
5
8
4
4
9
3
7
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

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

Precipitation Probability (%)

30
31
64
95
95
95
95
74
56
75
73
71
76
68
82
73
18
21
27
16
8
2
1
0

Precipitation Amount (mm)

0
0
0.3
1
1.6
2.9
1.6
0.2
0
0.4
0.4
0.4
0.4
0.4
0.5
0.4
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

17
16
16
19
15
17
19
22
24
24
23
24
26
27
29
29
29
29
23
22
22
19
19
19

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

87
89
90
92
95
96
96
96
96
96
96
96
95
95
92
92
92
90
92
89
92
90
92
92

Pressure (mb)

1004
1004
1004
1004
1003
1002
1000
1000
999
999
998
998
998
998
998
998
998
999
999
1000
1001
1002
1003
1004

Ozone (du)

294
293
292
294
291
291
290
291
293
293
295
298
297
297
299
301
303
307
309
314
312
314
317
315

Sunday 7

Waning Gibbous 86%

No Rise

11:40

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: 08:08, Set: 16:20, Transit: 12:14. Moon - Rise: No Rise, Set: 11:40. Civil Dark: 16:58 - 07:30. Nautical Dark: 17:39 - 06:49. Astro Dark: 18:18 - 06:09

Total Clouds (% Sky Obscured)

64
100
77
89
64
91
93
100
94
88
63
61
100
100
100
100
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

32
68
63
80
60
61
60
57
50
40
63
36
48
56
56
54
56
57
59
60
62
62
69
76

Medium Clouds (% Sky Obscured)

30
62
37
53
18
73
69
100
43
40
45
60
100
100
100
100
83
36
13
46
74
100
100
100

High Clouds (% Sky Obscured)

42
70
62
65
64
69
84
100
94
88
63
52
100
100
100
100
100
100
100
100
100
100
100
100

ISS Passover

Visibility (miles)

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

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

Precipitation Probability (%)

3
25
26
45
54
21
37
49
66
64
73
68
67
66
60
37
15
24
24
30
48
47
56
84

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

17
16
19
21
24
24
25
26
26
26
25
23
22
21
22
23
23
22
22
20
18
17
16
16

Chance of Frost

Temperature (°C)

12
12
12
12
12
12
13
12
13
12
13
12
12
12
12
12
12
13
13
13
13
13
13
13

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

89
92
92
92
92
89
86
89
86
86
80
84
89
89
93
92
92
92
92
93
93
95
98
96

Pressure (mb)

1004
1005
1005
1005
1005
1005
1005
1005
1005
1005
1006
1007
1007
1008
1008
1008
1008
1008
1007
1007
1006
1006
1006
1005

Ozone (du)

315
312
310
312
314
315
315
318
322
327
329
331
334
337
337
336
337
337
335
330
322
317
316
314

Monday 8

Waning Gibbous 77%

20:20

12:02

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: 08:09, Set: 16:19, Transit: 12:14. Moon - Rise: 20:20, Set: 12:02. Civil Dark: 16:58 - 07:31. Nautical Dark: 17:39 - 06:50. Astro Dark: 18:18 - 06:10

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
90
80
71
67
60

Low Clouds (% Sky Obscured)

83
85
85
87
88
90
91
88
85
81
66
52
37
38
39
41
49
54
63
64
66
66
60
53

Medium Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
99
99
99
100
100
100
100
100
100
100
100
87
67
50
8
6

High Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
77
55
32
31
16

ISS Passover

Visibility (miles)

1
4
6
3
3
3
5
7
7
4
2
2
2
2
1
2
4
2
5
9
9
7
8
6

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

Precipitation Probability (%)

95
95
95
95
95
95
95
95
95
85
89
81
93
95
95
95
90
79
66
40
40
45
58
37

Precipitation Amount (mm)

1.2
1.1
2.1
2.8
3
2.7
1.8
1.3
0.9
0.4
0.6
0.5
0.7
1.1
0.9
0.8
0.5
0.5
0.3
0
0
0
0.3
0

Wind Speed/Direction (mph)

19
21
27
32
36
37
39
39
36
34
31
27
24
22
23
25
27
28
28
29
28
28
27
28

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

98
96
95
96
98
98
96
96
96
98
100
98
98
98
98
96
96
95
92
92
93
93
92
95

Pressure (mb)

1004
1004
1003
1001
1000
999
999
998
998
997
997
998
998
999
999
999
999
999
999
999
1000
1000
999
1000

Ozone (du)

311
313
311
306
304
299
298
295
294
291
290
291
289
289
288
288
289
289
289
289
288
285
287
288

Tuesday 9

Waning Gibbous 67%

21:43

12:19

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

Sun - Rise: 08:10, Set: 16:19, Transit: 12:15. Moon - Rise: 21:43, Set: 12:19. Civil Dark: 16:57 - 07:32. Nautical Dark: 17:39 - 06:51. Astro Dark: 18:18 - 06:11

Total Clouds (% Sky Obscured)

49
57
65
71
61
43
39
40
38
40
48
55
57
36
15
4
9
14
14
13
15
16
17
23

Low Clouds (% Sky Obscured)

35
48
43
43
30
34
39
40
38
40
48
53
54
32
15
4
9
14
14
13
15
16
17
23

Medium Clouds (% Sky Obscured)

2
10
20
21
14
6
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1

High Clouds (% Sky Obscured)

15
1
10
15
11
0
0
0
0
0
0
0
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
8
8
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 (%)

13
17
15
29
16
16
26
21
15
17
20
26
33
30
29
32
24
20
22
21
20
17
13
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)

27
26
25
25
24
24
24
24
23
23
23
21
21
22
21
21
21
21
21
21
21
20
19
18

Chance of Frost

Temperature (°C)

12
12
12
12
12
12
12
12
11
11
11
11
11
11
11
11
11
11
11
11
11
11
11
11

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

90
90
88
88
87
83
88
86
84
83
84
84
85
85
84
81
80
81
81
81
81
78
78
77

Pressure (mb)

1003
1005
1006
1007
1008
1009
1010
1011
1011
1012
1013
1011
1011
1012
1013
1014
1015
1015
1016
1016
1017
1018
1019
1019

Ozone (du)

290
296
296
298
300
303
307
310
311
314
315
317
319
322
323
324
326
322
318
314
313
313
312
312

Wednesday 10

Waning Gibbous 56%

23:01

12:32

20 OK
21 OK
22 OK
23 OK
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: 08:11, Set: 16:19, Transit: 12:15. Moon - Rise: 23:01, Set: 12:32. Civil Dark: 16:58 - 07:33. Nautical Dark: 17:39 - 06:51. Astro Dark: 18:18 - 06:12

Total Clouds (% Sky Obscured)

26
28
30
33
52
71
88
79
72
63
76
85
92
94
97
100
99
98
97
97
98
98
98
98

Low Clouds (% Sky Obscured)

26
28
30
33
34
37
37
36
32
28
38
48
58
52
40
31
27
26
26
24
23
25
35
43

Medium Clouds (% Sky Obscured)

3
3
2
1
5
10
15
26
47
63
75
75
75
80
85
86
76
59
40
40
40
40
47
49

High Clouds (% Sky Obscured)

0
0
0
0
13
26
40
35
30
31
44
47
51
67
84
100
94
88
83
80
78
81
82
76

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 (%)

11
9
8
6
10
13
16
16
14
10
11
10
9
9
9
9
10
13
14
14
15
15
15
21

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
15
13
13
13
14
14
15
16
18
19
20
22
23
24
26
27
27
28
28
29
30
30
30

Chance of Frost

Temperature (°C)

10
10
10
10
10
10
10
10
10
11
11
11
11
11
11
11
11
11
11
11
11
11
11
11

Feels Like (°C)

6
7
7
7
7
7
7
7
7
7
7
7
6
6
6
5
6
5
5
5
5
5
5
5

Dew Point (°C)

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

Relative Humidity (%)

76
74
76
77
78
83
85
87
85
84
84
83
84
84
84
83
84
83
83
83
84
86
87
87

Pressure (mb)

1020
1020
1021
1021
1021
1021
1021
1020
1020
1019
1019
1019
1018
1018
1017
1016
1016
1015
1014
1012
1011
1010
1009
1009

Ozone (du)

311
311
311
310
310
308
307
305
304
304
303
303
302
302
301
301
300
299
297
295
296
298
299
302

Thursday 11

Third Quarter 46%

00:15

12:44

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

Sun - Rise: 08:12, Set: 16:19, Transit: 12:16. Moon - Rise: 00:15, Set: 12:44. Civil Dark: 16:58 - 07:34. Nautical Dark: 17:39 - 06:52. Astro Dark: 18:19 - 06:13

Total Clouds (% Sky Obscured)

97
99
99
100
100
100
100
100
100
100
99
98
97
96
95
96

Low Clouds (% Sky Obscured)

50
52
45
43
56
65
73
72
74
79
79
82
84
84
83
80

Medium Clouds (% Sky Obscured)

55
70
80
92
94
97
98
99
99
100
92
83
72
56
45
34

High Clouds (% Sky Obscured)

71
78
85
100
100
100
100
100
100
100
74
52
29
35
43
46

ISS Passover

Visibility (miles)

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

Fog (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Type

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

Precipitation Probability (%)

23
29
35
34
45
64
78
77
70
70
68
70
82
90
86
68

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

30
30
30
30
30
31
31
30
26
24
21
19
16
15
11
7

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

9
10
10
10
10
10
9
9
10
10
10
10
10
10
9
9

Relative Humidity (%)

87
88
88
88
88
88
87
86
88
90
92
93
93
95
91
91

Pressure (mb)

1008
1007
1006
1005
1004
1003
1003
1002
1001
1001
1001
1001
1002
1003
1003
1004

Ozone (du)

305
308
311
314
317
317
318
319
319
318
318
317
317
317
317
318

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

Generated: 05/12/25 20:21:58. Forecast: 05/12/25 to 11/12/25. Timezone: UTC+0.00