Clear Outside v1.0 - International Weather Forecasts For Astronomers

Monday 29

Waxing Gibbous 72%

12:02

03:33

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
10 OK
11 Good

Sun - Rise: 08:12, Set: 16:06, Transit: 12:09. Moon - Rise: 12:02, Set: 03:33. Civil Dark: 16:46 - 07:33. Nautical Dark: 17:29 - 06:49. Astro Dark: 18:09 - 06:09

Total Clouds (% Sky Obscured)

85
81
90
100
85
76
82
87
70
88
91
80
75
82
70
60
49
71
73
52
76
62
24
13

Low Clouds (% Sky Obscured)

65
81
87
100
85
76
82
87
70
88
91
79
74
82
68
54
32
63
62
37
65
20
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
4
3
3
4
3
5
6
6
5
6
19
25
32
43
55
49
71
59
52
43
62
24
13

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
3
0
0
0
0
0
3
1
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
10
10
13
13
12
11
10
10
9
9
11
11
12
11
11
12
12
11
10
9
9
9
10

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

82
79
78
78
75
76
75
73
73
75
75
72
82
83
88
83
65
65
62
63
64
66
69
68

Pressure (mb)

1029
1029
1028
1028
1029
1029
1029
1029
1030
1030
1030
1031
1031
1031
1032
1032
1032
1033
1033
1034
1034
1035
1035
1035

Ozone (du)

288
286
286
284
283
284
279
277
277
277
277
277
275
276
276
276
278
279
280
280
281
286
292
302

Tuesday 30

Waxing Gibbous 82%

12:21

05:06

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

Sun - Rise: 08:12, Set: 16:07, Transit: 12:09. Moon - Rise: 12:21, Set: 05:06. Civil Dark: 16:46 - 07:33. Nautical Dark: 17:29 - 06:50. Astro Dark: 18:10 - 06:09

Total Clouds (% Sky Obscured)

6
5
11
4
7
30
30
42
13
28
36
28
0
31
33
37
37
4
0
0
0
0
0
0

Low Clouds (% Sky Obscured)

0
4
11
0
0
8
0
34
13
28
36
28
0
31
33
37
37
4
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)

6
5
11
4
6
30
30
19
1
1
2
3
0
2
1
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
4
1
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
10
8
7
7
6
6
5
5
5
4
4
4
3
3
3
3
3
3
3
2
3

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

68
68
72
76
85
89
91
91
93
93
92
92
92
92
92
94
94
92
94
92
91
89
83
77

Pressure (mb)

1035
1035
1035
1035
1035
1035
1035
1035
1035
1035
1035
1035
1035
1035
1034
1034
1034
1033
1033
1033
1033
1033
1032
1032

Ozone (du)

308
310
308
307
308
306
305
305
306
305
305
306
305
306
306
307
309
311
310
311
314
314
315
316

Wednesday 31

Waxing Gibbous 91%

12:49

06:36

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

Sun - Rise: 08:12, Set: 16:08, Transit: 12:10. Moon - Rise: 12:49, Set: 06:36. Civil Dark: 16:47 - 07:32. Nautical Dark: 17:30 - 06:50. Astro Dark: 18:11 - 06:09

Total Clouds (% Sky Obscured)

13
8
0
0
1
1
5
5
6
38
35
71
93
91
78
100
46
44
56
74
90
94
97
95

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
1
1
2
38
35
3
32
26
39
35
33
36
45
53
61
65
52
50

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
9
20
35

High Clouds (% Sky Obscured)

12
8
0
0
1
1
3
1
1
1
7
39
65
91
78
100
35
29
42
57
69
79
89
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
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
5
3
5

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
5
6
5
5
5
5
5
6
6
6
7
7
8
8
8
9
10
10
11
11
12
13
13

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

73
72
72
78
86
91
91
89
91
91
91
91
91
91
91
92
92
86
88
84
88
88
80
77

Pressure (mb)

1031
1030
1030
1029
1028
1028
1027
1027
1026
1025
1024
1023
1022
1021
1020
1019
1018
1017
1016
1015
1014
1014
1013
1012

Ozone (du)

316
316
317
316
313
312
312
312
315
316
315
316
316
316
316
314
312
310
312
314
321
326
328
332

Thursday 1

Waxing Gibbous 97%

13:31

07:53

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

Sun - Rise: 08:12, Set: 16:09, Transit: 12:10. Moon - Rise: 13:31, Set: 07:53. Civil Dark: 16:48 - 07:32. Nautical Dark: 17:31 - 06:50. Astro Dark: 18:12 - 06:09

Total Clouds (% Sky Obscured)

71
98
99
86
65
38
36
32
27
24
22
22
29
32
36
42
47
51
47
50
49
47
44
43

Low Clouds (% Sky Obscured)

50
49
45
44
46
38
36
32
27
24
22
22
28
28
31
31
29
28
27
25
23
15
9
2

Medium Clouds (% Sky Obscured)

30
15
0
0
0
0
0
0
0
0
0
0
0
0
2
9
33
40
21
50
49
47
44
43

High Clouds (% Sky Obscured)

71
96
89
68
35
1
0
0
0
0
0
0
1
1
2
6
3
1
1
1
1
10
15
13

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 (%)

8
12
12
4
1
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
13
11
11
10
10
10
10
10
9
9
9
9
9
8
7
7
6
6
6
7
8

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

75
77
77
89
93
93
91
91
91
91
93
93
94
93
93
91
91
91
89
89
88
84
80
76

Pressure (mb)

1011
1010
1009
1009
1009
1009
1009
1009
1009
1009
1009
1008
1008
1008
1008
1009
1008
1008
1008
1008
1008
1007
1007
1007

Ozone (du)

330
335
348
363
370
371
369
368
365
365
365
367
367
368
367
365
359
355
349
342
329
321
305
299

Friday 2

Waxing Gibbous 100%

14:33

08:49

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
10 Bad
11 Bad

Sun - Rise: 08:12, Set: 16:10, Transit: 12:11. Moon - Rise: 14:33, Set: 08:49. Civil Dark: 16:49 - 07:32. Nautical Dark: 17:32 - 06:49. Astro Dark: 18:13 - 06:09

Total Clouds (% Sky Obscured)

59
74
89
77
65
52
57
63
67
77
85
96
100
100
100
100
100
100
99
99
100
100
100
100

Low Clouds (% Sky Obscured)

10
16
16
9
4
0
10
19
29
35
41
46
55
63
68
75
78
81
84
88
91
85
78
68

Medium Clouds (% Sky Obscured)

59
74
87
77
58
37
39
34
34
42
47
54
43
36
38
44
49
45
56
72
91
94
97
100

High Clouds (% Sky Obscured)

14
26
33
22
13
2
1
1
0
27
53
80
79
83
82
69
59
56
64
74
77
50
31
20

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
3
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
2
1
0
0
0
1
2
3
11
10
3
9
12
15
18
17
14
12
9
3

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
9
9
9
8
7
6
6
4
4
5
5
4
4
4
4
4
3
3
3
4
5
6
7

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

73
74
77
83
91
93
94
96
93
91
91
89
86
84
81
78
80
81
81
80
75
72
68
64

Pressure (mb)

1006
1006
1005
1004
1004
1004
1004
1004
1003
1003
1003
1003
1002
1002
1002
1002
1001
1001
1001
1001
1001
1001
1001
1001

Ozone (du)

298
302
298
297
301
303
300
301
308
315
318
322
322
325
327
330
335
341
347
354
361
368
371
373

Saturday 3

Full Moon 99%

15:54

09:27

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
10 Bad
11 OK

Sun - Rise: 08:12, Set: 16:11, Transit: 12:11. Moon - Rise: 15:54, Set: 09:27. Civil Dark: 16:50 - 07:32. Nautical Dark: 17:33 - 06:49. Astro Dark: 18:14 - 06:09

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
78
55
33

Low Clouds (% Sky Obscured)

64
58
52
44
41
35
25
13
1
2
2
2
1
1
1
0
0
0
0
0
0
8
17
25

Medium Clouds (% Sky Obscured)

100
100
100
99
97
96
98
99
100
100
100
100
100
100
100
100
100
100
100
100
100
75
50
25

High Clouds (% Sky Obscured)

37
56
80
86
93
100
100
100
100
100
100
100
100
100
100
100
100
100
100
99
99
70
41
12

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

8
9
9
9
9
9
9
9
9
9
9
9
9
9
9
10
10
10
9
9
9
9
10
11

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

60
62
65
67
70
72
75
77
78
81
79
81
79
81
81
79
78
75
73
75
76
76
73
72

Pressure (mb)

1001
1001
1001
1000
1000
1000
1000
1001
1001
1001
1001
1000
1000
1000
1000
999
999
999
999
999
1000
1000
1000
1000

Ozone (du)

375
374
373
372
374
377
380
383
387
390
389
388
387
387
386
386
386
385
384
387
389
392
394
397

Sunday 4

Waning Gibbous 96%

17:24

09:52

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: 08:11, Set: 16:12, Transit: 12:12. Moon - Rise: 17:24, Set: 09:52. Civil Dark: 16:52 - 07:32. Nautical Dark: 17:34 - 06:49. Astro Dark: 18:15 - 06:09

Total Clouds (% Sky Obscured)

55
76
98
98
97
96
96
96
86
77
72
68
67
61
56
51
52
52

Low Clouds (% Sky Obscured)

47
69
91
80
69
57
58
59
59
54
53
51
47
42
35
38
37
35

Medium Clouds (% Sky Obscured)

25
28
30
25
25
20
15
10
15
20
25
35
35
40
55
51
52
45

High Clouds (% Sky Obscured)

7
2
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

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 (%)

4
5
3
13
14
10
12
11
8
6
4
1
2
2
0
1
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

68
70
71
74
77
81
84
86
86
86
82
79
76
71
65
59
64
68

Pressure (mb)

1000
1000
1000
1000
1001
1001
1002
1003
1004
1004
1005
1006
1006
1007
1007
1008
1009
1009

Ozone (du)

400
395
390
385
382
379
376
378
381
384
384
384
385
380
375
369
367
366

Forecast for Swindon, Swindon, United Kingdom (51.56,-1.78)

Generated: 29/12/25 12:01:02. Forecast: 29/12/25 to 04/01/26. Timezone: UTC+0.00