Clear Outside v1.0 - International Weather Forecasts For Astronomers

Monday 22

Waxing Crescent 6%

10:25

18:23

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
08 Bad
09 Bad

Sun - Rise: 08:17, Set: 16:16, Transit: 12:16. Moon - Rise: 10:25, Set: 18:23. Civil Dark: 16:55 - 07:38. Nautical Dark: 17:37 - 06:56. Astro Dark: 18:17 - 06:16

Total Clouds (% Sky Obscured)

85
91
77
75
100
89
100
100
100
100
100
93
98
98
100
100
100
100
100
100
100
99
97
98

Low Clouds (% Sky Obscured)

70
69
73
74
61
61
59
49
48
49
50
50
53
65
85
91
100
100
100
100
100
99
97
78

Medium Clouds (% Sky Obscured)

5
2
11
38
20
51
98
57
99
100
64
48
62
53
55
55
42
60
56
95
93
72
36
39

High Clouds (% Sky Obscured)

64
90
77
75
100
89
100
65
47
78
39
29
65
95
100
100
75
70
71
65
68
58
34
56

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
Light Rain
Light Rain
Very Light Rain
Light Rain
None
None

Precipitation Probability (%)

0
0
3
12
16
18
20
12
20
20
27
24
9
18
24
27
25
33
57
57
48
59
28
15

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

3
3
4
3
4
3
2
2
3
3
3
3
3
2
2
2
2
3
3
3
3
3
3
4

Dew Point (°C)

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

Relative Humidity (%)

84
84
84
82
84
87
87
87
88
87
88
90
90
88
90
88
88
88
88
88
90
90
90
90

Pressure (mb)

1003
1004
1004
1004
1004
1005
1005
1006
1006
1006
1007
1008
1008
1008
1008
1009
1009
1010
1010
1010
1011
1011
1012
1013

Ozone (du)

418
418
416
413
407
403
402
395
390
383
380
382
382
380
374
370
368
369
370
367
364
361
362
362

Tuesday 23

Waxing Crescent 12%

10:48

19:39

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
08 Bad
09 Bad

Sun - Rise: 08:17, Set: 16:16, Transit: 12:17. Moon - Rise: 10:48, Set: 19:39. Civil Dark: 16:55 - 07:38. Nautical Dark: 17:38 - 06:56. Astro Dark: 18:17 - 06:16

Total Clouds (% Sky Obscured)

99
94
97
99
90
88
87
85
82
81
80
83
81
85
83
74
76
77
76
75
75
75
71
65

Low Clouds (% Sky Obscured)

55
53
66
78
77
69
78
84
78
80
78
83
81
85
83
74
76
77
76
75
75
75
71
65

Medium Clouds (% Sky Obscured)

46
43
44
75
74
50
29
19
2
0
0
0
1
1
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

76
42
37
1
0
24
40
40
39
30
25
19
2
2
2
2
0
0
3
4
3
3
3
3

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
1
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
5
2
2
3
0
0
0
0
0
0
2
1
1
1
1
2
1
1
2
1
1
1
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

5
5
6
6
6
5
3
2
1
1
-0
-0
-0
-0
1
-0
-1
-1
-1
-1
-1
-1
-1
-1

Dew Point (°C)

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

Relative Humidity (%)

85
85
88
91
91
90
90
91
91
93
91
88
86
85
88
89
86
85
85
86
86
88
86
86

Pressure (mb)

1014
1015
1016
1016
1017
1017
1018
1019
1020
1021
1022
1023
1023
1024
1024
1025
1026
1026
1026
1027
1027
1028
1029
1030

Ozone (du)

362
360
358
358
357
354
348
350
352
352
352
350
346
343
339
331
329
327
325
327
329
326
326
322

Wednesday 24

Waxing Crescent 19%

11:06

20:56

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

Sun - Rise: 08:17, Set: 16:17, Transit: 12:17. Moon - Rise: 11:06, Set: 20:56. Civil Dark: 16:56 - 07:38. Nautical Dark: 17:38 - 06:56. Astro Dark: 18:18 - 06:16

Total Clouds (% Sky Obscured)

61
53
22
7
73
30
20
17
30
2
1
0
0
3
30
17
18
26
17
26
23
20
24
27

Low Clouds (% Sky Obscured)

61
53
22
0
11
26
20
17
30
1
0
0
0
3
30
17
18
26
17
26
23
20
17
15

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
24
27

High Clouds (% Sky Obscured)

0
2
5
7
73
21
2
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
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
2

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

0
1
-0
1
0
-1
-2
-2
-3
-3
-4
-5
-5
-5
-5
-5
-4
-4
-6
-6
-6
-6
-6
-7

Dew Point (°C)

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

Relative Humidity (%)

82
79
77
78
77
77
79
81
81
80
77
75
74
74
78
78
78
78
77
78
78
77
75
74

Pressure (mb)

1030
1031
1030
1030
1030
1031
1031
1032
1032
1032
1032
1032
1032
1032
1031
1031
1030
1030
1029
1028
1028
1027
1027
1027

Ozone (du)

320
320
320
322
321
316
316
319
320
322
325
329
331
331
333
333
336
338
342
350
351
353
355
356

Thursday 25

Waxing Crescent 28%

11:20

22:13

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

Sun - Rise: 08:18, Set: 16:18, Transit: 12:18. Moon - Rise: 11:20, Set: 22:13. Civil Dark: 16:57 - 07:39. Nautical Dark: 17:39 - 06:57. Astro Dark: 18:19 - 06:17

Total Clouds (% Sky Obscured)

12
7
34
42
56
47
46
46
43
40
41
42
44
46
45
56
40
32
25
27
21
21
20
20

Low Clouds (% Sky Obscured)

11
7
27
42
56
47
46
46
43
40
40
39
42
43
41
38
35
32
25
27
21
21
20
20

Medium Clouds (% Sky Obscured)

2
0
21
1
1
2
4
6
6
6
9
8
8
6
6
29
5
2
2
5
0
0
0
0

High Clouds (% Sky Obscured)

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

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 (%)

3
2
8
10
6
10
9
7
9
9
6
7
7
5
4
4
2
3
2
3
2
1
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)

22
21
21
20
19
19
18
18
17
16
16
15
14
13
11
10
9
8
8
7
7
7
6
7

Chance of Frost

Temperature (°C)

1
2
2
3
3
3
2
1
1
1
1
0
0
0
-0
-0
-0
-0
-1
-1
-1
-1
-1
-1

Feels Like (°C)

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

Dew Point (°C)

-3
-4
-4
-4
-3
-3
-3
-3
-4
-3
-3
-3
-3
-3
-3
-3
-3
-3
-3
-3
-3
-3
-3
-3

Relative Humidity (%)

71
66
64
64
65
68
69
71
71
74
75
77
78
80
81
81
83
83
86
87
87
86
87
86

Pressure (mb)

1027
1027
1026
1025
1025
1025
1025
1025
1026
1026
1026
1026
1027
1027
1027
1027
1027
1027
1028
1028
1028
1028
1029
1029

Ozone (du)

357
358
359
361
362
361
361
360
358
356
356
356
359
362
363
367
369
364
363
361
358
358
357
356

Friday 26

Waxing Crescent 39%

11:33

23:30

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

Sun - Rise: 08:18, Set: 16:19, Transit: 12:18. Moon - Rise: 11:33, Set: 23:30. Civil Dark: 16:57 - 07:39. Nautical Dark: 17:40 - 06:57. Astro Dark: 18:19 - 06:17

Total Clouds (% Sky Obscured)

20
23
22
30
41
40
44
54
58
80
58
65
53
48
44
39
38
42
46
58
51
44
37
25

Low Clouds (% Sky Obscured)

20
23
22
30
41
40
44
54
58
64
58
63
53
48
44
39
38
42
46
56
51
44
37
25

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
16
2
2
7
0
0
0
0
9
17
26
25
20
15
9

High Clouds (% Sky Obscured)

2
2
1
4
9
1
0
1
1
14
1
4
1
1
1
1
1
8
14
15
5
2
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 (%)

0
0
0
0
0
1
1
1
2
2
2
3
2
2
4
5
3
4
4
2
4
3
1
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)

7
9
10
10
10
10
10
9
10
10
10
10
10
10
9
9
9
9
9
9
9
10
10
10

Chance of Frost

Temperature (°C)

1
2
3
3
3
3
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
2
2

Feels Like (°C)

-2
-1
-1
-0
-0
-1
-1
-3
-3
-3
-4
-3
-4
-4
-4
-4
-4
-4
-5
-4
-4
-4
-4
-4

Dew Point (°C)

-3
-3
-2
-2
-1
-0
-0
-1
-1
-1
-1
-1
-2
-2
-2
-2
-2
-2
-2
-2
-2
-2
-1
-1

Relative Humidity (%)

77
73
72
72
74
80
86
89
88
88
86
86
83
83
81
83
83
84
83
80
80
80
80
80

Pressure (mb)

1029
1029
1029
1029
1029
1029
1029
1029
1030
1030
1030
1030
1030
1030
1031
1031
1031
1031
1031
1031
1031
1031
1032
1032

Ozone (du)

354
353
354
356
359
363
365
364
363
363
362
363
362
363
363
363
362
362
362
362
361
362
363
363

Saturday 27

First Quarter 50%

11:46

00:50

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

Sun - Rise: 08:18, Set: 16:19, Transit: 12:19. Moon - Rise: 11:46, Set: 00:50. Civil Dark: 16:58 - 07:39. Nautical Dark: 17:40 - 06:57. Astro Dark: 18:20 - 06:17

Total Clouds (% Sky Obscured)

14
7
7
5
3
4
3
0
0
0
2
2
3
3
3
3
0
23
47
70
75
79
84
78

Low Clouds (% Sky Obscured)

14
7
7
5
3
4
3
0
0
0
0
0
0
0
0
0
0
23
47
70
75
79
84
78

Medium Clouds (% Sky Obscured)

5
0
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
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
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 (%)

1
0
0
0
0
0
0
0
0
0
0
0
0
0
2
3
2
5
4
0
1
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
12
13
13
13
13
12
11
11
10
10
10
10
9
9
7
6
5
5
6
6
7
7
7

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-4
-4
-4
1
1
1
1
1
1
-1
-1
-1
-1
-1
-1
-2
-1
-1
-1
-2
-1
-1
-1
-1

Dew Point (°C)

-0
1
1
2
2
2
3
2
2
2
2
2
2
2
2
2
1
1
0
0
-0
-0
0
1

Relative Humidity (%)

80
79
78
79
80
82
86
89
93
93
93
93
93
91
91
93
91
93
93
93
93
93
94
96

Pressure (mb)

1033
1033
1033
1033
1033
1033
1033
1034
1034
1034
1034
1034
1034
1034
1034
1034
1034
1034
1034
1034
1034
1034
1034
1034

Ozone (du)

364
364
364
362
360
358
357
356
355
353
351
348
347
347
346
344
343
342
339
337
335
333
331
329

Sunday 28

Waxing Gibbous 61%

11:59

02:13

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

Sun - Rise: 08:18, Set: 16:20, Transit: 12:19. Moon - Rise: 11:59, Set: 02:13. Civil Dark: 16:59 - 07:39. Nautical Dark: 17:41 - 06:57. Astro Dark: 18:21 - 06:17

Total Clouds (% Sky Obscured)

72
66
64
62
60
61
61
66
61
55
47
42
41
40
38
32
28
32
33
21

Low Clouds (% Sky Obscured)

72
66
61
59
57
59
61
65
61
55
47
42
41
40
38
32
28
32
33
21

Medium Clouds (% Sky Obscured)

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
1
1
2
3
3
3
3
8
15
27
21
12
1
26
33
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

Fog (%)

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

Precipitation Probability (%)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-1
-1
-1
2
2
2
2
2
2
1
0
-1
-1
-1
-1
-2
-1
0
0
0

Dew Point (°C)

1
1
2
2
2
2
2
2
2
2
2
2
1
1
1
0
0
0
0
-0

Relative Humidity (%)

89
85
80
82
83
85
82
80
79
83
86
91
93
94
94
94
94
94
94
93

Pressure (mb)

1034
1034
1034
1033
1033
1033
1033
1034
1034
1034
1034
1035
1035
1035
1035
1035
1035
1036
1036
1036

Ozone (du)

329
329
329
328
327
326
324
323
322
321
321
320
318
316
314
311
309
306
306
306

Forecast for Upton, Cornwall, United Kingdom (50.54,-4.42)

Generated: 22/12/25 10:01:48. Forecast: 22/12/25 to 28/12/25. Timezone: UTC+0.00