Clear Outside v1.0 - International Weather Forecasts For Astronomers

Monday 22

Waxing Crescent 6%

10:21

18:00

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: 08:11, Set: 15:54, Transit: 12:03. Moon - Rise: 10:21, Set: 18:00. Civil Dark: 16:35 - 07:31. Nautical Dark: 17:19 - 06:47. Astro Dark: 18:00 - 06:05

Total Clouds (% Sky Obscured)

100
100
100
100
100
93
100
100
98
99
90
96
89
93
100
100
100
100
100
100
100
100
100
99

Low Clouds (% Sky Obscured)

52
45
52
53
58
76
79
84
92
85
71
76
83
82
100
100
100
100
100
100
100
100
100
99

Medium Clouds (% Sky Obscured)

0
2
4
75
94
80
79
39
58
32
26
66
61
69
84
91
69
76
85
74
73
55
33
34

High Clouds (% Sky Obscured)

100
100
90
100
100
68
99
100
60
81
47
46
21
47
52
85
85
66
74
79
100
100
100
95

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
3
2
95
95
95
99
100
100
100
96

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
2
0
0
1
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

96
96
95
93
91
90
91
93
95
95
95
95
93
93
93
91
93
91
93
93
94
94
98
96

Pressure (mb)

1007
1008
1008
1009
1009
1009
1009
1009
1010
1011
1011
1012
1012
1013
1013
1013
1014
1014
1015
1015
1015
1015
1016
1016

Ozone (du)

372
372
374
376
378
381
383
382
378
375
374
374
368
365
361
359
360
356
352
350
351
353
353
350

Tuesday 23

Waxing Crescent 12%

10:42

19:18

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: 08:12, Set: 15:54, Transit: 12:03. Moon - Rise: 10:42, Set: 19:18. Civil Dark: 16:36 - 07:31. Nautical Dark: 17:20 - 06:47. Astro Dark: 18:01 - 06:06

Total Clouds (% Sky Obscured)

97
98
99
100
100
100
100
100
100
100
98
79
91
90
87
97
80
88
89
75
86
77
73
53

Low Clouds (% Sky Obscured)

97
98
99
100
100
100
100
100
100
100
97
79
91
90
87
97
80
88
85
75
86
77
73
51

Medium Clouds (% Sky Obscured)

24
35
28
31
46
47
49
50
25
11
8
2
2
2
0
0
0
1
5
2
0
0
0
2

High Clouds (% Sky Obscured)

22
10
10
8
7
5
5
21
15
16
5
3
2
3
3
3
2
2
2
3
4
32
16
47

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 (%)

2
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
1
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

98
98
96
93
91
90
90
91
93
93
93
93
94
94
94
94
96
96
94
94
91
91
88
89

Pressure (mb)

1017
1018
1019
1019
1020
1020
1021
1021
1022
1023
1024
1025
1026
1026
1027
1027
1028
1029
1029
1030
1030
1031
1031
1032

Ozone (du)

348
346
347
346
347
348
347
346
346
346
343
343
341
337
336
332
329
328
329
329
325
325
324
322

Wednesday 24

Waxing Crescent 19%

10:57

20:37

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

Sun - Rise: 08:12, Set: 15:55, Transit: 12:04. Moon - Rise: 10:57, Set: 20:37. Civil Dark: 16:36 - 07:31. Nautical Dark: 17:20 - 06:47. Astro Dark: 18:02 - 06:06

Total Clouds (% Sky Obscured)

53
31
49
46
58
51
39
28
31
32
48
48
49
35
33
36
39
36
39
40
38
39
33
28

Low Clouds (% Sky Obscured)

51
31
33
35
52
51
39
28
31
32
48
48
49
35
33
36
39
36
39
40
38
39
33
28

Medium Clouds (% Sky Obscured)

16
1
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)

45
5
40
22
16
2
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
1
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

88
88
88
85
82
80
82
83
85
83
83
85
89
89
88
88
88
88
88
88
86
86
86
86

Pressure (mb)

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

Ozone (du)

319
317
317
318
320
321
324
324
323
324
324
324
326
326
326
326
326
325
325
325
325
327
328
329

Thursday 25

Waxing Crescent 28%

11:10

21:56

08 OK
09 OK
10 Good
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 Good
04 Good
05 Good
06 Good
07 Good

Sun - Rise: 08:12, Set: 15:56, Transit: 12:04. Moon - Rise: 11:10, Set: 21:56. Civil Dark: 16:37 - 07:32. Nautical Dark: 17:21 - 06:48. Astro Dark: 18:02 - 06:06

Total Clouds (% Sky Obscured)

21
17
11
6
5
2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Low Clouds (% Sky Obscured)

21
17
11
5
4
2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
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
16
17
18
18
18
18
17
17
17
16
15
14
13
12
12
11
11
10
9
9
8
8
8

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

86
85
82
80
75
73
71
71
72
70
70
71
73
74
77
77
75
75
75
77
77
77
78
78

Pressure (mb)

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

Ozone (du)

329
330
329
330
332
333
335
337
337
336
334
335
335
334
333
335
342
343
342
338
334
332
330
330

Friday 26

Waxing Crescent 39%

11:21

23:16

08 Good
09 Good
10 Good
11 Good
12 Good
13 Good
14 Good
15 Good
16 Good
17 Good
18 OK
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: 08:13, Set: 15:57, Transit: 12:05. Moon - Rise: 11:21, Set: 23:16. Civil Dark: 16:38 - 07:32. Nautical Dark: 17:22 - 06:48. Astro Dark: 18:03 - 06:06

Total Clouds (% Sky Obscured)

0
0
0
0
0
0
2
1
0
0
24
37
71
81
77
74
76
78
80
81
83
85
88
92

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
1
0
0
0
24
37
71
76
75
74
76
78
80
81
83
77
75
74

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
2
2
3
3
1
0
0
0
0
8
14
14
35
64

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
4
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
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

80
78
74
72
72
73
76
79
83
86
88
89
89
91
93
93
94
91
86
83
83
80
79
79

Pressure (mb)

1033
1033
1033
1033
1033
1033
1033
1033
1033
1033
1033
1036
1037
1037
1038
1038
1038
1038
1038
1038
1038
1039
1039
1039

Ozone (du)

332
334
336
336
336
336
336
334
333
333
334
334
334
334
334
334
335
334
333
333
332
331
330
329

Saturday 27

First Quarter 50%

11:32

00:37

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: 08:13, Set: 15:57, Transit: 12:05. Moon - Rise: 11:32, Set: 00:37. Civil Dark: 16:38 - 07:32. Nautical Dark: 17:22 - 06:48. Astro Dark: 18:04 - 06:07

Total Clouds (% Sky Obscured)

95
94
93
91
89
88
86
84
81
75
72
74
81
85
88
91
84
78
73
79
83
87
83
79

Low Clouds (% Sky Obscured)

73
77
80
86
86
86
85
79
71
49
64
73
79
82
84
85
82
78
73
79
83
86
82
77

Medium Clouds (% Sky Obscured)

95
94
93
87
57
25
6
4
2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

7
8
7
7
4
4
1
1
0
0
2
7
8
10
12
16
18
12
5
5
4
4
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
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

78
78
79
81
81
82
85
87
86
90
90
90
88
86
85
82
82
85
89
93
88
85
80
79

Pressure (mb)

1040
1040
1040
1040
1040
1040
1040
1040
1040
1040
1040
1040
1040
1040
1040
1040
1040
1040
1039
1039
1039
1038
1038
1038

Ozone (du)

328
327
326
326
326
324
322
320
319
318
317
316
316
315
315
315
315
313
311
309
309
309
309
309

Sunday 28

Waxing Gibbous 61%

11:43

02:03

Sun - Rise: 08:13, Set: 15:58, Transit: 12:06. Moon - Rise: 11:43, Set: 02:03. Civil Dark: 16:39 - 07:32. Nautical Dark: 17:23 - 06:48. Astro Dark: 18:04 - 06:07

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 Nether Heyford, Northamptonshire, United Kingdom (52.22,-1.04)

Generated: 22/12/25 08:34:53. Forecast: 22/12/25 to 28/12/25. Timezone: UTC+0.00