Clear Outside v1.0 - International Weather Forecasts For Astronomers

Tuesday 30

Waxing Gibbous 82%

12:33

05:07

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

Sun - Rise: 08:13, Set: 15:53, Transit: 12:03. Moon - Rise: 12:33, Set: 05:07. Civil Dark: 16:35 - 07:31. Nautical Dark: 17:20 - 06:46. Astro Dark: 18:02 - 06:04

Total Clouds (% Sky Obscured)

51
43
22
40
73
49
10
13
16
1
0
0
1
1
1
0
2
43
56
26
38
12
12
13

Low Clouds (% Sky Obscured)

51
30
22
40
71
47
5
10
16
0
0
0
0
0
0
0
0
7
27
14
0
0
10
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
1
18
19
26
38
12
3
8

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 (%)

2
3
2
2
1
2
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
8
7
8
8
8
8
8
8
7
7
7
7
7
7
8
10
10
10
10
10
11
12
12

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

83
85
86
85
86
86
86
89
91
91
89
86
86
86
81
74
72
77
82
82
86
88
88
88

Pressure (mb)

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

Ozone (du)

308
304
305
308
307
304
306
307
309
308
309
303
302
302
302
305
307
309
307
302
298
299
298
297

Wednesday 31

Waxing Gibbous 91%

13:13

06:39

20 OK
21 OK
22 OK
23 OK
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 OK
18 OK
19 OK

Sun - Rise: 08:13, Set: 15:54, Transit: 12:03. Moon - Rise: 13:13, Set: 06:39. Civil Dark: 16:36 - 07:31. Nautical Dark: 17:20 - 06:46. Astro Dark: 18:03 - 06:04

Total Clouds (% Sky Obscured)

30
28
27
13
38
70
100
100
100
96
100
91
78
60
81
84
44
49
95
97
92
17
15
15

Low Clouds (% Sky Obscured)

0
0
14
12
38
62
50
25
33
66
45
44
43
34
5
10
0
7
17
19
19
8
7
1

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
1
2
65
47
24
0
32
0
0
0
0
7
48
37
29
17
9
15

High Clouds (% Sky Obscured)

16
17
11
3
2
46
99
100
96
80
100
82
70
58
81
84
19
19
94
95
89
17
15
15

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
1
2
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
Very Light Rain
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

0
0
0
0
0
0
0
0
0
1
7
6
20
45
8
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
0.3
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

12
13
13
13
13
14
15
16
17
18
17
17
18
19
18
17
17
19
18
17
15
13
13
12

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

89
88
89
89
89
89
88
83
80
79
77
80
80
79
94
94
71
65
67
71
73
76
77
79

Pressure (mb)

1021
1020
1019
1018
1017
1016
1015
1014
1012
1011
1010
1009
1008
1008
1008
1007
1006
1006
1006
1005
1005
1005
1005
1005

Ozone (du)

298
299
298
300
296
293
293
293
293
300
308
318
319
325
345
380
393
399
398
398
390
378
370
367

Thursday 1

Waxing Gibbous 97%

14:14

07:57

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

Sun - Rise: 08:12, Set: 15:55, Transit: 12:04. Moon - Rise: 14:14, Set: 07:57. Civil Dark: 16:37 - 07:31. Nautical Dark: 17:21 - 06:46. Astro Dark: 18:03 - 06:04

Total Clouds (% Sky Obscured)

62
100
100
100
97
65
22
18
36
74
75
92
86
69
100
95
73
26
0
0
15
20
20
14

Low Clouds (% Sky Obscured)

1
1
1
1
0
0
0
0
0
16
52
67
26
42
33
30
25
1
0
0
10
10
2
1

Medium Clouds (% Sky Obscured)

50
95
100
100
97
24
11
10
13
22
23
72
86
69
100
95
73
15
0
0
15
20
20
14

High Clouds (% Sky Obscured)

62
100
100
100
97
60
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
6
9
12
6
9
15
10
8
2
8
12
9
4
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-3
-3
-4
-4
-4
-4
-4
-4
-4
-4
-4
-4
-5
-5
-4
-4
-4
-4
-2
-3
-4
-6
-7
-7

Dew Point (°C)

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

Relative Humidity (%)

76
73
73
72
72
71
71
74
71
70
71
72
67
67
66
80
77
64
62
59
62
61
61
61

Pressure (mb)

1005
1005
1005
1005
1005
1005
1005
1005
1005
1005
1004
1004
1004
1004
1004
1004
1004
1003
1003
1003
1003
1003
1003
1004

Ozone (du)

371
373
373
378
381
372
370
374
374
373
373
374
376
377
374
377
379
383
384
382
376
371
367
362

Friday 2

Waxing Gibbous 100%

15:36

08:53

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

Sun - Rise: 08:12, Set: 15:57, Transit: 12:04. Moon - Rise: 15:36, Set: 08:53. Civil Dark: 16:38 - 07:31. Nautical Dark: 17:23 - 06:46. Astro Dark: 18:04 - 06:04

Total Clouds (% Sky Obscured)

35
45
36
40
40
45
5
2
45
45
45
7
3
16
25
48
94
97
100
80
26
4
26
30

Low Clouds (% Sky Obscured)

1
1
19
25
14
1
1
0
15
15
3
0
0
16
25
48
72
62
48
32
17
0
0
0

Medium Clouds (% Sky Obscured)

35
45
0
40
40
45
3
2
0
45
45
7
3
3
1
1
64
80
100
80
19
2
0
30

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
0
1
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 (%)

2
3
5
2
2
1
1
2
2
2
1
0
0
0
4
26
37
31
14
14
13
11
24
11

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

-7
-7
-7
-7
-8
-8
-8
-8
-8
-8
-9
-9
-9
-9
-9
-8
-3
-3
-6
-7
-7
-7
-4
-2

Relative Humidity (%)

63
65
61
61
58
60
62
63
61
60
59
59
61
59
56
55
86
80
61
57
58
59
77
91

Pressure (mb)

1004
1004
1004
1004
1004
1004
1004
1004
1004
1004
1003
1004
1004
1004
1004
1004
1004
1004
1004
1005
1005
1006
1006
1007

Ozone (du)

363
364
367
366
367
372
376
380
381
386
383
387
387
389
392
392
391
391
386
382
377
374
374
375

Saturday 3

Full Moon 99%

17:09

09:28

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

Sun - Rise: 08:12, Set: 15:58, Transit: 12:05. Moon - Rise: 17:09, Set: 09:28. Civil Dark: 16:39 - 07:30. Nautical Dark: 17:24 - 06:46. Astro Dark: 18:05 - 06:04

Total Clouds (% Sky Obscured)

30
36
6
5
6
24
35
5
2
2
2
1
1
0
0
0
32
60
90
67
38
20
26
37

Low Clouds (% Sky Obscured)

2
2
5
5
5
6
5
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

30
36
3
0
0
2
5
2
0
0
0
0
0
0
0
0
12
23
45
39
28
12
9
9

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
2
6
14

ISS Passover

Visibility (miles)

9
9
9
9
9
4
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
1
1
8
32
30
10
4
1
1
1
1
1
1
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
13
13
14
14
16
16
18
18
17
17
14
13
13
13
13
13
12
11
10
9
8
8
8

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-7
-8
-8
-7
-7
-8
-8
-9
-9
-8
-8
-8
-8
-8
-8
-8
-7
-4
-4
-4
-4
-4
-3
-6

Dew Point (°C)

-4
-6
-7
-7
-7
-8
-6
-7
-7
-7
-8
-8
-8
-8
-8
-7
-7
-6
-6
-6
-6
-6
-6
-7

Relative Humidity (%)

77
71
68
67
67
64
74
62
68
68
65
65
64
64
62
61
59
60
61
64
66
68
71
71

Pressure (mb)

1007
1008
1008
1008
1009
1009
1009
1009
1010
1010
1010
1013
1013
1014
1014
1014
1014
1014
1014
1014
1014
1014
1015
1015

Ozone (du)

373
374
377
380
379
375
377
374
370
368
370
374
377
381
385
389
394
391
388
386
385
384
384
382

Sunday 4

Waning Gibbous 96%

18:41

09:51

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
18 Bad
19 Bad

Sun - Rise: 08:11, Set: 15:59, Transit: 12:05. Moon - Rise: 18:41, Set: 09:51. Civil Dark: 16:40 - 07:30. Nautical Dark: 17:25 - 06:46. Astro Dark: 18:07 - 06:04

Total Clouds (% Sky Obscured)

50
50
53
48
54
73
90
85
80
80
85
90
90
80
70
60
55
45
40
36
43
49
46
43

Low Clouds (% Sky Obscured)

0
0
1
1
11
24
58
70
77
80
80
60
50
45
35
25
20
10
5
14
22
31
34
36

Medium Clouds (% Sky Obscured)

9
19
31
36
46
58
70
70
75
75
75
75
75
70
65
55
36
28
19
23
24
23
16
9

High Clouds (% Sky Obscured)

24
20
14
6
11
15
19
28
32
40
40
34
29
20
12
1
1
0
0
0
0
0
1
3

ISS Passover

Visibility (miles)

9
9
9
9
9
6
4
1
0
0
0
0
1
1
1
0
0
0
0
0
3
6
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
Snow
Snow
Snow
Snow
Snow
Light Rain
Light Rain
Light Rain
Light Rain
Very Light Rain
None
None
None
None
None
None
None

Precipitation Probability (%)

0
1
2
1
12
21
28
57
79
95
95
94
90
84
78
71
57
47
40
40
41
37
27
20

Precipitation Amount (mm)

0
0
0
0
0
0
0
0.2
0.5
1
0.9
0.8
0.7
0.6
0.5
0.5
0.3
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-5
-6
-6
-6
-7
-6
-7
-7
-7
-6
-7
-6
-6
-6
-6
-5
-5
-3
-3
-2
-2
-3
-4
-3

Dew Point (°C)

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

Relative Humidity (%)

69
69
73
79
84
86
89
92
94
96
98
98
98
98
100
100
98
100
100
100
94
91
86
87

Pressure (mb)

1015
1015
1015
1015
1015
1015
1014
1014
1014
1013
1013
1013
1013
1013
1013
1013
1013
1014
1014
1014
1015
1016
1016
1017

Ozone (du)

379
377
373
369
365
367
368
369
370
371
372
377
381
386
383
381
378
378
377
376
379
381
384
386

Monday 5

Waning Gibbous 91%

No Rise

10:07

20 Bad
21 OK
22 OK
23 OK
00 OK
01 OK
02 Good
03 Good
04 Good
05 Good
06 Good
07 OK
08 OK
09 Bad
10 Bad
11 Bad

Sun - Rise: 08:11, Set: 16:00, Transit: 12:06. Moon - Rise: No Rise, Set: 10:07. Civil Dark: 16:42 - 07:30. Nautical Dark: 17:26 - 06:45. Astro Dark: 18:08 - 06:04

Total Clouds (% Sky Obscured)

42
34
24
15
8
8
2
2
2
1
3
3
4
6
12
20

Low Clouds (% Sky Obscured)

39
26
13
0
0
0
0
0
1
1
3
3
4
6
12
20

Medium Clouds (% Sky Obscured)

2
11
19
15
8
8
1
1
1
1
3
3
4
6
12
20

High Clouds (% Sky Obscured)

4
14
22
15
8
8
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
6
4
1
1
0

Fog (%)

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
Snow
Snow

Precipitation Probability (%)

7
6
6
1
2
1
0
0
0
0
4
10
17
36
44
50

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.1
0.2

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-4
-3
-4
-5
-4
-7
-7
-7
-7
-6
-7
-5
-6
-6
-6
-5

Dew Point (°C)

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

Relative Humidity (%)

89
91
91
89
87
91
91
92
91
92
92
92
91
92
94
98

Pressure (mb)

1018
1018
1019
1019
1020
1020
1020
1020
1020
1020
1020
1021
1021
1021
1021
1022

Ozone (du)

389
391
391
391
391
387
382
377
377
377
377
375
372
370
370
371

Forecast for Boston, Lincolnshire, United Kingdom (52.98,-0.02)

Generated: 30/12/25 20:10:16. Forecast: 30/12/25 to 05/01/26. Timezone: UTC+0.00