Clear Outside v1.0 - International Weather Forecasts For Astronomers

Friday 26

Waxing Crescent 39%

11:17

23:12

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
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad
01 OK
02 Good
03 Good
04 Good
05 Good

Sun - Rise: 08:08, Set: 15:53, Transit: 12:01. Moon - Rise: 11:17, Set: 23:12. Civil Dark: 16:34 - 07:28. Nautical Dark: 17:18 - 06:44. Astro Dark: 17:59 - 06:02

Total Clouds (% Sky Obscured)

96
95
91
91
97
96
92
86
86
84
81
70
80
81
77
81
83
80
73
48
0
0
0
0

Low Clouds (% Sky Obscured)

96
95
91
91
97
96
92
86
86
84
81
70
80
81
77
81
83
80
67
48
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
3
0
0
0
0
0

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
1
3
11
2
5
3
3
3
3
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

84
84
86
85
79
76
72
73
73
78
85
89
89
89
89
86
85
85
83
83
85
86
89
91

Pressure (mb)

1030
1030
1030
1031
1031
1031
1031
1031
1030
1031
1031
1032
1032
1033
1033
1034
1034
1034
1034
1035
1035
1035
1035
1035

Ozone (du)

330
329
329
330
330
329
330
330
331
332
332
331
328
327
325
320
317
314
312
312
311
310
311
309

Saturday 27

First Quarter 50%

11:28

00:33

06 Good
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
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad
01 Bad
02 Bad
03 Bad
04 Bad
05 Bad

Sun - Rise: 08:09, Set: 15:54, Transit: 12:01. Moon - Rise: 11:28, Set: 00:33. Civil Dark: 16:35 - 07:28. Nautical Dark: 17:18 - 06:44. Astro Dark: 18:00 - 06:02

Total Clouds (% Sky Obscured)

0
64
82
77
79
82
93
89
84
98
88
88
75
90
92
81
80
81
83
90
86
84
78
89

Low Clouds (% Sky Obscured)

0
64
82
77
79
82
93
88
84
98
80
87
71
88
84
68
80
81
83
84
82
84
78
89

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
1
7
3
0
7
7
3
6
5
19
2
6
4
40
44
21
16
16
49
34
7
17
33

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)

8
9
10
10
10
11
13
14
15
14
14
14
12
11
11
12
9
8
9
8
7
8
7
7

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

0
1
2
3
5
5
6
5
5
5
4
3
3
3
3
3
4
4
4
4
4
4
4
3

Relative Humidity (%)

93
93
94
96
96
93
90
85
79
81
78
77
79
79
78
81
91
93
93
93
93
94
94
93

Pressure (mb)

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

Ozone (du)

308
308
309
310
308
308
307
306
305
304
303
303
302
301
301
300
300
299
298
299
298
299
298
296

Sunday 28

Waxing Gibbous 61%

11:39

01:58

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

Sun - Rise: 08:09, Set: 15:54, Transit: 12:02. Moon - Rise: 11:39, Set: 01:58. Civil Dark: 16:35 - 07:28. Nautical Dark: 17:19 - 06:44. Astro Dark: 18:01 - 06:03

Total Clouds (% Sky Obscured)

89
96
99
96
96
97
88
78
90
63
32
48
34
30
22
35
30
42
52
58
59
50
46
42

Low Clouds (% Sky Obscured)

89
89
71
90
88
93
75
63
81
39
32
23
0
1
5
10
22
25
22
22
19
25
32
40

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)

33
32
45
22
20
14
21
12
3
12
24
30
28
21
13
26
13
24
23
28
30
23
13
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

93
93
85
75
71
71
71
72
75
75
78
88
93
94
96
96
96
96
96
96
94
96
94
94

Pressure (mb)

1035
1035
1035
1035
1035
1034
1033
1033
1032
1032
1032
1032
1032
1032
1032
1032
1031
1031
1031
1031
1031
1030
1030
1030

Ozone (du)

295
294
293
291
292
291
290
289
289
289
289
291
291
291
291
292
294
298
298
297
296
297
297
297

Monday 29

Waxing Gibbous 72%

11:53

03:28

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
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad
01 Bad
02 Bad
03 Bad
04 Bad
05 Bad

Sun - Rise: 08:09, Set: 15:55, Transit: 12:02. Moon - Rise: 11:53, Set: 03:28. Civil Dark: 16:36 - 07:28. Nautical Dark: 17:20 - 06:44. Astro Dark: 18:01 - 06:03

Total Clouds (% Sky Obscured)

50
54
60
58
59
56
56
55
82
94
92
90
90
92
94
94
93
93
84
72
65
66
52
53

Low Clouds (% Sky Obscured)

48
54
60
58
59
56
56
55
82
87
84
80
84
87
91
89
88
88
80
66
64
55
25
14

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)

7
10
14
10
5
0
0
0
1
1
1
1
2
3
4
10
18
21
21
23
26
28
34
45

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

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

93
93
93
91
86
82
76
74
75
72
71
72
74
76
74
68
68
70
78
86
88
86
82
88

Pressure (mb)

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

Ozone (du)

296
297
297
296
295
294
291
291
289
286
285
283
282
280
279
279
278
280
279
278
280
282
280
280

Tuesday 30

Waxing Gibbous 82%

12:11

05:02

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
20 Bad
21 OK
22 Bad
23 OK
00 OK
01 OK
02 Bad
03 Bad
04 OK
05 OK

Sun - Rise: 08:09, Set: 15:56, Transit: 12:03. Moon - Rise: 12:11, Set: 05:02. Civil Dark: 16:37 - 07:28. Nautical Dark: 17:21 - 06:44. Astro Dark: 18:02 - 06:03

Total Clouds (% Sky Obscured)

69
77
82
84
85
86
78
71
65
61
55
52
61
55
52
46
38
30
38
47
56
50
46
47

Low Clouds (% Sky Obscured)

40
61
74
75
77
79
71
63
55
51
47
40
44
49
52
46
38
30
36
43
51
48
46
45

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
2
4
6
6
5
3

High Clouds (% Sky Obscured)

32
21
12
8
7
7
5
6
4
5
4
4
3
4
5
5
6
10
7
5
2
2
2
2

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 (%)

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

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

89
83
68
62
64
67
70
70
63
59
63
67
70
76
81
86
88
88
88
84
81
77
77
77

Pressure (mb)

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

Ozone (du)

279
279
281
279
279
281
283
283
285
285
291
299
301
303
305
308
307
306
304
307
309
312
315
317

Wednesday 31

Waxing Gibbous 91%

12:38

No Set

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 OK
19 OK
20 OK
21 OK
22 OK
23 OK
00 Bad
01 Bad
02 Bad
03 Bad
04 Bad
05 Bad

Sun - Rise: 08:09, Set: 15:57, Transit: 12:03. Moon - Rise: 12:38, Set: No Set. Civil Dark: 16:38 - 07:28. Nautical Dark: 17:22 - 06:44. Astro Dark: 18:03 - 06:03

Total Clouds (% Sky Obscured)

65
79
95
94
94
93
81
70
61
55
52
51
39
27
26
27
31
34
48
62
73
78
83
87

Low Clouds (% Sky Obscured)

59
73
87
86
85
85
72
59
48
40
30
29
39
27
21
13
7
1
27
56
73
78
81
79

Medium Clouds (% Sky Obscured)

13
17
22
13
9
7
5
3
0
0
0
0
0
0
0
0
0
0
0
0
0
3
5
5

High Clouds (% Sky Obscured)

2
2
3
7
12
17
13
8
4
4
4
4
3
1
0
10
20
27
22
14
10
12
14
16

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 (%)

5
9
11
13
13
12
9
6
0
0
0
0
0
0
0
0
0
0
1
0
0
1
1
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

77
77
78
78
80
82
83
83
85
83
83
85
86
88
89
91
91
88
86
88
89
91
91
92

Pressure (mb)

1028
1028
1027
1027
1027
1027
1026
1026
1025
1024
1024
1024
1024
1024
1024
1023
1023
1023
1023
1022
1022
1021
1021
1020

Ozone (du)

320
317
313
310
312
314
316
318
320
321
323
325
327
326
325
324
320
316
312
310
309
308
306
304

Thursday 1

Waxing Gibbous 97%

13:19

06:33

Sun - Rise: 08:09, Set: 15:58, Transit: 12:04. Moon - Rise: 13:19, Set: 06:33. Civil Dark: 16:39 - 07:28. Nautical Dark: 17:23 - 06:44. Astro Dark: 18:04 - 06:03

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 Bourn, Cambridgeshire, United Kingdom (52.20,-0.05)

Generated: 26/12/25 06:40:15. Forecast: 26/12/25 to 01/01/26. Timezone: UTC+0.00