Clear Outside v1.0 - International Weather Forecasts For Astronomers

Monday 22

Waxing Crescent 12%

10:41

18:07

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
11 Bad
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad
17 Bad

Sun - Rise: 08:10, Set: 16:01, Transit: 12:06. Moon - Rise: 10:41, Set: 18:07. Civil Dark: 16:41 - 07:30. Nautical Dark: 17:24 - 06:47. Astro Dark: 18:05 - 06:07

Total Clouds (% Sky Obscured)

100
100
94
96
98
94
97
100
100
100
100
100
100
100
100
100
100
100
100
100
99
99
98
93

Low Clouds (% Sky Obscured)

81
80
80
89
94
91
83
77
79
84
80
100
100
92
100
95
86
95
100
100
97
98
97
93

Medium Clouds (% Sky Obscured)

62
52
84
67
90
82
89
85
68
76
91
100
82
37
32
28
11
7
27
8
9
7
35
3

High Clouds (% Sky Obscured)

100
100
77
67
76
72
62
99
100
100
100
100
100
100
97
100
100
100
100
94
80
6
8
10

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
57
81
100
100
100
100
100
100
100
52
76
73
7
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
1
1
0
0
0
0
0
0
0
0
0
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)

3
3
5
6
8
9
9
9
8
9
10
12
13
13
12
12
13
13
13
14
14
14
15
15

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

91
93
93
96
95
96
96
94
94
94
93
94
93
94
94
94
94
93
91
90
88
88
85
85

Pressure (mb)

1009
1010
1010
1011
1011
1011
1012
1012
1013
1013
1013
1013
1014
1015
1015
1016
1017
1018
1018
1018
1019
1019
1020
1021

Ozone (du)

385
383
380
372
366
361
358
356
355
354
352
352
349
350
348
349
352
352
355
356
356
354
354
352

Tuesday 23

Waxing Crescent 19%

10:58

19:24

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
11 Bad
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad
17 Good

Sun - Rise: 08:11, Set: 16:02, Transit: 12:06. Moon - Rise: 10:58, Set: 19:24. Civil Dark: 16:42 - 07:31. Nautical Dark: 17:25 - 06:48. Astro Dark: 18:05 - 06:07

Total Clouds (% Sky Obscured)

81
83
89
94
96
97
88
81
83
83
79
75
66
74
70
80
65
68
87
78
72
64
57
0

Low Clouds (% Sky Obscured)

81
83
89
94
96
97
88
81
83
83
79
75
66
74
70
80
65
68
87
78
72
64
57
0

Medium Clouds (% Sky Obscured)

2
2
0
0
0
0
0
0
0
0
0
0
0
0
0
2
3
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

1
0
3
2
2
2
2
1
10
15
37
33
22
6
1
10
10
1
1
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
1
2
2
4
0
0
0
0
0
0
0
0
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)

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

Chance of Frost

Temperature (°C)

5
5
5
5
5
5
5
5
5
4
4
4
4
3
3
3
3
4
4
4
4
4
3
3

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

82
90
91
88
89
86
83
85
83
83
82
83
83
89
91
89
85
77
75
75
75
77
77
82

Pressure (mb)

1022
1023
1024
1024
1025
1026
1026
1027
1028
1028
1028
1029
1030
1031
1032
1033
1033
1033
1033
1033
1033
1034
1034
1034

Ozone (du)

348
350
350
346
343
338
334
332
327
323
324
326
327
328
327
328
327
324
326
328
329
328
333
332

Wednesday 24

Waxing Crescent 28%

11:11

20:43

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

Sun - Rise: 08:11, Set: 16:03, Transit: 12:07. Moon - Rise: 11:11, Set: 20:43. Civil Dark: 16:43 - 07:31. Nautical Dark: 17:26 - 06:48. Astro Dark: 18:06 - 06:07

Total Clouds (% Sky Obscured)

49
44
66
34
25
49
41
25
26
32
22
15
11
3
0
0
0
0
10
19
27
17
8
0

Low Clouds (% Sky Obscured)

49
44
66
34
25
49
41
25
26
32
22
15
11
2
0
0
0
0
9
18
27
17
8
0

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
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 (%)

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 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
15
16
17
17
17
18
19
19
20
21
21
21
21
21
22
22
22
21
20
20
19
18

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-2
-3
-3
-3
-3
-3
-4
-4
-4
-5
-5
-5
-6
-6
-6
-6
-5
-5
-3
-4
-4
-3
-4
-4

Dew Point (°C)

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

Relative Humidity (%)

85
85
86
83
85
83
83
83
83
84
84
83
81
80
77
70
65
63
62
61
62
63
64
66

Pressure (mb)

1034
1034
1034
1034
1034
1033
1033
1033
1032
1032
1031
1031
1031
1030
1030
1030
1030
1030
1029
1029
1028
1028
1029
1029

Ozone (du)

333
333
334
334
335
336
339
339
340
343
346
352
351
350
352
353
353
352
353
352
354
355
354
353

Thursday 25

Waxing Crescent 39%

11:23

22:00

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

Sun - Rise: 08:11, Set: 16:04, Transit: 12:07. Moon - Rise: 11:23, Set: 22:00. Civil Dark: 16:43 - 07:31. Nautical Dark: 17:26 - 06:48. Astro Dark: 18:06 - 06:08

Total Clouds (% Sky Obscured)

5
13
21
29
37
43
45
44
44
40
35
37
44
49
56
60
61
58
39
19
0
1
1
14

Low Clouds (% Sky Obscured)

5
13
21
29
37
43
45
44
44
40
35
37
44
49
52
53
51
52
37
18
0
1
0
0

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
2
3
3
2
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
1
14

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
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-5
-5
-5
-5
-5
-5
-4
-4
-4
-4
-4
-4
-5
-4
-4
-4
-4
-3
-2
-2
-2
-2
-2
-3

Dew Point (°C)

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

Relative Humidity (%)

67
69
70
71
74
75
75
77
77
78
78
78
78
77
75
75
71
69
67
68
70
77
85
91

Pressure (mb)

1029
1030
1030
1030
1031
1031
1031
1031
1031
1031
1031
1031
1031
1032
1032
1032
1032
1032
1032
1032
1032
1032
1032
1033

Ozone (du)

351
351
351
352
352
351
353
354
352
346
343
342
338
337
338
339
338
337
337
333
329
325
323
322

Friday 26

Waxing Crescent 50%

11:35

23:19

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

Sun - Rise: 08:11, Set: 16:04, Transit: 12:08. Moon - Rise: 11:35, Set: 23:19. Civil Dark: 16:44 - 07:31. Nautical Dark: 17:27 - 06:48. Astro Dark: 18:07 - 06:08

Total Clouds (% Sky Obscured)

15
15
15
20
35
50
48
47
46
53
64
74
80
69
63
35
16
0
9
18
28
34
41
47

Low Clouds (% Sky Obscured)

0
0
0
16
31
50
46
44
43
53
63
73
50
49
48
32
16
0
9
18
28
34
41
47

Medium Clouds (% Sky Obscured)

0
0
3
6
35
22
2
2
2
2
2
2
21
37
53
35
16
0
9
18
4
3
2
1

High Clouds (% Sky Obscured)

15
15
15
20
25
13
8
8
7
1
1
0
0
0
0
0
0
0
1
2
4
7
14
14

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
1
2
4
5
2
6
8
8
8
5
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)

16
16
16
16
16
16
17
17
17
16
15
17
17
13
12
11
12
13
13
14
14
15
15
15

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

93
94
93
94
96
94
89
86
85
86
93
93
89
89
91
93
91
89
88
88
86
85
85
86

Pressure (mb)

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

Ozone (du)

322
321
322
323
321
321
320
319
317
317
316
316
315
313
312
311
310
309
307
307
306
305
305
306

Saturday 27

First Quarter 50%

11:47

00:39

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
11 Bad
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad
17 Bad

Sun - Rise: 08:11, Set: 16:05, Transit: 12:08. Moon - Rise: 11:47, Set: 00:39. Civil Dark: 16:45 - 07:32. Nautical Dark: 17:28 - 06:49. Astro Dark: 18:08 - 06:08

Total Clouds (% Sky Obscured)

59
71
83
82
81
81
87
93
98
98
98
99
99
99
99
97
94
92
91
90
88
90
92
92

Low Clouds (% Sky Obscured)

59
71
83
82
81
81
87
93
96
97
98
99
98
97
95
93
91
90
89
88
87
90
92
92

Medium Clouds (% Sky Obscured)

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

High Clouds (% Sky Obscured)

12
8
5
3
1
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 (%)

0
0
0
0
0
0
0
0
0
0
0
0
1
2
0
2
1
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

2
2
2
2
2
2
2
2
2
2
2
2
1
1
1
1
1
1
1
1
1
1
1
1

Relative Humidity (%)

88
88
89
89
88
86
86
88
89
91
88
83
79
76
73
71
73
73
75
74
74
72
76
79

Pressure (mb)

1036
1036
1036
1036
1036
1036
1036
1036
1035
1035
1035
1035
1035
1035
1035
1035
1035
1035
1035
1035
1035
1035
1035
1035

Ozone (du)

306
306
307
308
307
306
305
304
302
301
301
301
301
302
303
304
305
305
305
304
303
302
303
303

Sunday 28

Waxing Gibbous 61%

12:02

02:03

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 Bad
08 Bad
09 Bad
10 Bad
11 OK

Sun - Rise: 08:12, Set: 16:06, Transit: 12:09. Moon - Rise: 12:02, Set: 02:03. Civil Dark: 16:46 - 07:32. Nautical Dark: 17:29 - 06:49. Astro Dark: 18:09 - 06:08

Total Clouds (% Sky Obscured)

82
74
62
55
48
45
32
25
17
35
51
71
61
53
48
44
41
37

Low Clouds (% Sky Obscured)

82
74
62
55
48
45
32
25
17
35
51
71
61
53
48
44
41
37

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
8
16
21
16
8
1
0
0
0

High Clouds (% Sky Obscured)

13
23
35
32
28
27
32
25
17
35
51
71
61
53
48
44
41
33

ISS Passover

Visibility (miles)

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

Precipitation Type

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

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

1
2
1
1
2
1
1
1
1
1
1
1
1
1
1
1
1
2

Relative Humidity (%)

82
86
89
94
96
96
94
96
96
96
96
96
94
96
96
98
93
91

Pressure (mb)

1036
1036
1036
1036
1036
1036
1036
1036
1036
1036
1036
1036
1036
1036
1037
1037
1037
1037

Ozone (du)

303
304
305
306
306
305
305
303
302
300
301
301
301
301
300
300
300
299

Forecast for Marlborough, Wiltshire, United Kingdom (51.42,-1.73)

Generated: 22/12/25 18:58:18. Forecast: 22/12/25 to 28/12/25. Timezone: UTC+0.00