Clear Outside v1.0 - International Weather Forecasts For Astronomers

Sunday 7

Waning Gibbous 86%

18:47

11:05

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
00 Bad
01 Bad
02 Bad
03 Bad
04 Bad
05 Bad
06 Bad
07 Bad

Sun - Rise: 08:05, Set: 16:13, Transit: 12:09. Moon - Rise: 18:47, Set: 11:05. Civil Dark: 16:52 - 07:27. Nautical Dark: 17:34 - 06:45. Astro Dark: 18:13 - 06:06

Total Clouds (% Sky Obscured)

95
96
97
98
100
85
94
100
90
88
100
60
63
71
88
85
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

83
92
89
98
92
75
90
76
72
77
82
60
63
71
80
69
71
67
73
76
63
73
76
72

Medium Clouds (% Sky Obscured)

95
96
97
98
89
65
81
19
0
1
0
0
0
0
13
44
74
99
98
88
81
100
93
100

High Clouds (% Sky Obscured)

95
96
97
98
100
81
88
100
90
88
69
0
0
0
51
69
100
100
96
100
100
100
100
100

ISS Passover

Visibility (miles)

0
0
0
1
0
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
Light Rain
Light Rain
Very Light Rain
None
None
None
None
None
None
None
None
None
None
None
None
None
None
Very Light Rain
None
None
Very Light Rain
None
None

Precipitation Probability (%)

5
95
95
61
30
13
5
4
1
3
3
3
2
0
1
2
9
26
52
33
36
45
43
30

Precipitation Amount (mm)

0
2
2.4
0.2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.2
0
0
0.2
0
0

Wind Speed/Direction (mph)

16
17
17
21
22
19
21
22
20
17
16
14
15
13
12
15
15
17
17
18
17
16
15
14

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

12
12
13
12
12
12
10
10
10
9
9
10
9
9
9
9
9
10
9
9
9
9
8
9

Relative Humidity (%)

98
98
98
96
96
90
86
89
90
90
93
96
91
93
95
93
93
93
88
87
87
84
83
87

Pressure (mb)

999
999
999
998
998
998
998
999
1001
1002
1003
1004
1005
1005
1006
1006
1006
1006
1006
1006
1006
1006
1006
1007

Ozone (du)

287
290
291
290
289
291
294
296
299
301
303
305
304
306
306
307
305
305
309
316
319
324
327
333

Monday 8

Waning Gibbous 77%

20:14

11:37

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
00 Bad
01 Bad
02 Bad
03 Bad
04 Bad
05 Bad
06 Bad
07 Bad

Sun - Rise: 08:06, Set: 16:13, Transit: 12:09. Moon - Rise: 20:14, Set: 11:37. Civil Dark: 16:52 - 07:28. Nautical Dark: 17:33 - 06:46. Astro Dark: 18:13 - 06:07

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
99

Low Clouds (% Sky Obscured)

79
70
71
71
75
73
76
71
70
94
77
100
88
93
94
92
97
90
96
92
100
100
96
96

Medium Clouds (% Sky Obscured)

100
100
100
100
89
44
27
21
46
27
100
99
100
100
100
100
100
100
100
98
88
98
85
98

High Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
100
100
93
100
100
64
100
100
100
95
87
100
100
62

ISS Passover

Visibility (miles)

9
9
9
7
4
4
9
9
9
9
9
4
0
1
1
1
1
2
3
3
4
4
9
9

Fog (%)

0
0
0
0
0
0
0
0
0
0
0
0
4
0
0
0
0
0
0
0
0
0
0
0

Precipitation Type

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

Precipitation Probability (%)

67
72
80
75
58
41
19
7
3
11
5
72
95
95
95
95
95
95
95
95
95
85
54
95

Precipitation Amount (mm)

0.3
0.6
0.7
0.6
0.3
0
0
0
0
0
0
0.6
1.9
2.2
2.6
3.1
1.9
1.5
1.9
1.7
0.9
0.7
0.2
1.4

Wind Speed/Direction (mph)

15
17
17
17
17
17
16
15
13
12
15
15
15
21
23
26
28
29
31
32
32
32
33
33

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

87
88
93
96
96
96
91
91
95
96
95
96
98
98
96
96
96
95
93
95
95
95
93
93

Pressure (mb)

1007
1007
1008
1008
1008
1008
1008
1008
1008
1008
1008
1008
1007
1007
1006
1005
1004
1003
1003
1002
1001
1000
999
999

Ozone (du)

339
343
344
345
340
339
339
338
335
332
327
320
310
305
302
296
290
288
287
287
285
284
286
287

Tuesday 9

Waning Gibbous 67%

21:38

11:59

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
00 Bad
01 Bad
02 Bad
03 Bad
04 Bad
05 Bad
06 Bad
07 Bad

Sun - Rise: 08:07, Set: 16:13, Transit: 12:10. Moon - Rise: 21:38, Set: 11:59. Civil Dark: 16:52 - 07:29. Nautical Dark: 17:33 - 06:47. Astro Dark: 18:13 - 06:07

Total Clouds (% Sky Obscured)

100
100
100
93
98
91
92
82
87
100
100
100
100
100
98
100
100
96
92
87
80
56
59
63

Low Clouds (% Sky Obscured)

100
100
100
66
72
81
70
37
37
21
25
34
55
58
67
73
70
66
67
68
70
56
59
63

Medium Clouds (% Sky Obscured)

95
91
100
83
94
66
67
75
78
100
99
100
100
89
95
41
42
24
0
0
0
0
0
0

High Clouds (% Sky Obscured)

100
100
52
50
50
60
48
60
70
73
78
100
100
100
88
100
100
83
56
37
17
0
0
0

ISS Passover

Visibility (miles)

8
7
3
0
6
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
Very Light Rain
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 (%)

79
70
95
59
47
42
19
2
0
2
1
6
1
5
11
12
8
8
7
21
14
4
8
16

Precipitation Amount (mm)

0.5
0.3
0.8
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)

32
33
31
27
19
16
15
13
10
8
7
8
8
8
8
9
11
11
11
12
12
10
9
9

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

92
93
95
96
95
90
93
93
93
93
93
93
95
95
93
91
91
85
85
88
87
88
91
93

Pressure (mb)

999
999
1000
1000
1001
1002
1002
1003
1004
1005
1006
1007
1007
1008
1008
1009
1009
1010
1011
1011
1012
1013
1014
1014

Ozone (du)

290
291
292
293
293
291
290
290
291
294
296
297
299
298
300
302
301
300
300
301
301
304
305
305

Wednesday 10

Waning Gibbous 57%

22:56

12:15

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

Sun - Rise: 08:08, Set: 16:13, Transit: 12:10. Moon - Rise: 22:56, Set: 12:15. Civil Dark: 16:52 - 07:30. Nautical Dark: 17:33 - 06:48. Astro Dark: 18:13 - 06:08

Total Clouds (% Sky Obscured)

62
57
53
47
38
33
29
22
9
0
3
3
0
2
4
6
8
9
14
16
27
22
16
18

Low Clouds (% Sky Obscured)

62
57
53
47
38
33
29
22
9
0
0
0
0
2
4
6
8
9
14
16
27
22
16
18

Medium Clouds (% Sky Obscured)

0
2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
3
3
0
0
0
0
0
0
3
2
0
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
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
19
20
11
14
8
0
3
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1

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
11
11
12
13
13
12
11
8
5
3
2
2
3
4
4
4
6
8
11
11
12
13
13

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

95
93
91
88
82
81
81
85
90
94
94
94
94
93
94
93
93
93
93
93
93
91
90
90

Pressure (mb)

1016
1017
1018
1019
1019
1020
1021
1022
1023
1023
1024
1024
1025
1025
1025
1025
1025
1025
1024
1023
1023
1023
1022
1022

Ozone (du)

304
308
311
312
315
314
312
309
309
312
309
309
310
309
312
312
312
312
311
313
314
311
313
316

Thursday 11

Third Quarter 46%

00:10

12:28

08 OK
09 Bad
10 OK
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

Sun - Rise: 08:09, Set: 16:13, Transit: 12:11. Moon - Rise: 00:10, Set: 12:28. Civil Dark: 16:52 - 07:31. Nautical Dark: 17:34 - 06:49. Astro Dark: 18:13 - 06:09

Total Clouds (% Sky Obscured)

20
31
39
69
86
93
100
100
100
100
97
99
100
100
100
100
100
100
99
100
100
100
100
100

Low Clouds (% Sky Obscured)

20
31
39
64
72
80
90
90
96
95
65
68
72
78
87
95
92
89
94
92
95
92
83
78

Medium Clouds (% Sky Obscured)

0
0
0
0
8
32
58
72
88
93
94
91
90
71
58
41
59
68
75
82
90
100
98
95

High Clouds (% Sky Obscured)

0
0
0
9
46
72
100
100
100
100
52
69
85
88
92
93
83
73
67
85
94
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
Very Light Rain
Light Rain
Very Light Rain
None
Very Light Rain
None
None
None
None
None

Precipitation Probability (%)

2
5
6
3
7
5
2
8
9
8
14
32
40
47
62
88
64
50
47
44
43
32
37
36

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.3
0.9
0.3
0
0.2
0
0
0
0
0

Wind Speed/Direction (mph)

13
12
14
15
15
16
16
16
16
16
17
6
6
7
9
11
12
12
12
12
13
13
14
14

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

87
88
84
84
85
85
87
88
87
82
87
87
88
87
88
88
90
88
90
90
90
93
93
93

Pressure (mb)

1021
1021
1020
1019
1019
1017
1016
1015
1015
1014
1013
1017
1017
1016
1016
1015
1015
1014
1014
1014
1013
1013
1012
1012

Ozone (du)

317
318
319
322
320
315
311
309
308
305
305
305
306
306
305
304
303
303
303
302
304
306
308
309

Friday 12

Waning Crescent 36%

01:22

12:40

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
00 Bad
01 Bad
02 Bad
03 Bad
04 Bad
05 Bad
06 Bad
07 Bad

Sun - Rise: 08:10, Set: 16:13, Transit: 12:11. Moon - Rise: 01:22, Set: 12:40. Civil Dark: 16:52 - 07:32. Nautical Dark: 17:34 - 06:50. Astro Dark: 18:13 - 06:10

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
94
89
84
90
95
85
80
80

Low Clouds (% Sky Obscured)

78
72
69
91
100
100
100
100
100
100
100
100
100
94
89
78
77
77
76
74
77
79
80
80

Medium Clouds (% Sky Obscured)

94
95
96
97
98
98
99
98
96
94
76
57
39
34
34
38
32
27
23
26
31
30
35
40

High Clouds (% Sky Obscured)

100
99
99
100
100
100
98
100
100
100
70
39
16
42
62
78
53
28
3
3
4
4
5
6

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

Precipitation Probability (%)

33
48
60
81
70
67
75
57
43
34
44
49
61
71
76
85
73
53
25
23
19
8
17
20

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

95
93
91
90
88
88
87
87
88
87
85
87
85
85
85
88
90
90
90
91
90
90
90
90

Pressure (mb)

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

Ozone (du)

310
312
312
313
314
312
310
308
307
305
304
305
306
307
307
307
307
312
316
320
321
322
323
323

Saturday 13

Waning Crescent 27%

02:32

12:51

Sun - Rise: 08:11, Set: 16:13, Transit: 12:12. Moon - Rise: 02:32, Set: 12:51. Civil Dark: 16:52 - 07:33. Nautical Dark: 17:34 - 06:50. Astro Dark: 18:14 - 06:11

Total Clouds (% Sky Obscured)

Low Clouds (% Sky Obscured)

Medium Clouds (% Sky Obscured)

High Clouds (% Sky Obscured)

ISS Passover

Visibility (miles)

Fog (%)

Precipitation Type

Precipitation Probability (%)

Precipitation Amount (mm)

Wind Speed/Direction (mph)

Chance of Frost

Temperature (°C)

Feels Like (°C)

Dew Point (°C)

Relative Humidity (%)

Pressure (mb)

Ozone (du)

Forecast for Upton, Cornwall, United Kingdom (50.54,-4.43)

Generated: 07/12/25 08:19:52. Forecast: 07/12/25 to 13/12/25. Timezone: UTC+0.00