Clear Outside v1.0 - International Weather Forecasts For Astronomers

Wednesday 31

Waxing Gibbous 91%

12:53

06:37

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

Sun - Rise: 08:14, Set: 16:11, Transit: 12:12. Moon - Rise: 12:53, Set: 06:37. Civil Dark: 16:51 - 07:34. Nautical Dark: 17:33 - 06:51. Astro Dark: 18:14 - 06:11

Total Clouds (% Sky Obscured)

50
47
22
17
0
0
0
13
29
30
23
0
1
4
65
77
92
90
72
42
68
88
90
94

Low Clouds (% Sky Obscured)

35
2
1
1
0
0
0
12
27
28
23
0
0
0
43
76
92
89
55
0
40
44
61
35

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
10

High Clouds (% Sky Obscured)

2
4
4
4
0
0
0
8
3
3
2
0
1
4
56
57
49
66
72
42
68
88
88
94

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 (%)

100
100
100
74
0
0
0
0
5
11
16
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)

3
3
2
3
4
5
5
4
5
5
5
5
5
5
6
6
6
5
7
9
9
9
9
9

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

94
87
81
77
74
74
80
89
91
89
89
89
91
91
91
92
92
92
80
80
81
91
93
93

Pressure (mb)

1033
1032
1031
1031
1030
1029
1028
1028
1027
1027
1026
1026
1025
1024
1023
1022
1021
1020
1019
1018
1017
1016
1016
1015

Ozone (du)

300
301
301
303
302
302
302
302
302
300
300
301
304
305
306
307
308
311
313
309
304
304
309
318

Thursday 1

Waxing Gibbous 97%

13:35

07:54

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

Sun - Rise: 08:14, Set: 16:12, Transit: 12:13. Moon - Rise: 13:35, Set: 07:54. Civil Dark: 16:52 - 07:34. Nautical Dark: 17:34 - 06:51. Astro Dark: 18:15 - 06:11

Total Clouds (% Sky Obscured)

100
77
38
66
100
100
77
42
29
17
31
52
44
32
50
71
79
81
81
82
100
84
82
84

Low Clouds (% Sky Obscured)

45
59
37
12
36
45
50
42
29
17
31
37
36
32
31
28
35
49
30
64
76
69
72
49

Medium Clouds (% Sky Obscured)

11
0
0
0
0
0
0
0
0
0
0
0
0
0
16
25
32
38
45
56
100
80
54
50

High Clouds (% Sky Obscured)

100
33
1
61
100
93
57
9
6
0
0
21
14
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
0
0
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
Very Light Rain
None
None
None

Precipitation Probability (%)

2
3
3
3
1
2
1
0
0
0
0
0
0
0
0
0
0
2
6
23
42
35
31
37

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.3
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

86
83
82
85
88
78
75
76
83
89
91
91
91
93
91
91
93
91
86
80
83
96
96
89

Pressure (mb)

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

Ozone (du)

322
321
323
336
352
368
373
370
362
361
362
363
361
358
348
347
345
347
345
346
346
348
340
332

Friday 2

Waxing Gibbous 100%

14:37

08:50

09 Bad
10 Bad
11 Bad
12 Good
13 Bad
14 OK
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 OK
08 Bad

Sun - Rise: 08:13, Set: 16:13, Transit: 12:13. Moon - Rise: 14:37, Set: 08:50. Civil Dark: 16:53 - 07:34. Nautical Dark: 17:35 - 06:51. Astro Dark: 18:16 - 06:11

Total Clouds (% Sky Obscured)

99
100
80
5
52
19
1
1
0
0
2
1
0
0
0
0
0
0
5
14
0
15
31
49

Low Clouds (% Sky Obscured)

53
100
66
0
47
18
1
1
0
0
1
1
0
0
0
0
0
0
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

63
60
33
2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
3
8
0
9
16
27

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)

0
0
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

Snow
Very Light Rain
Very Light Rain
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

45
56
51
7
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Amount (mm)

0.1
0.3
0.2
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)

12
9
12
11
11
14
13
11
9
8
7
7
7
7
8
8
8
8
9
9
9
9
9
9

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

93
98
86
70
64
63
64
69
74
77
77
77
77
77
75
75
75
74
74
72
72
71
70
71

Pressure (mb)

1008
1008
1009
1009
1009
1009
1009
1010
1011
1011
1011
1012
1012
1012
1013
1013
1013
1013
1013
1013
1013
1013
1013
1014

Ozone (du)

330
333
340
336
331
328
322
314
309
315
314
309
306
309
312
310
315
327
340
342
346
352
355
356

Saturday 3

Full Moon 99%

15:58

No Set

09 OK
10 OK
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 OK
05 OK
06 Bad
07 Bad
08 Bad

Sun - Rise: 08:13, Set: 16:14, Transit: 12:14. Moon - Rise: 15:58, Set: No Set. Civil Dark: 16:54 - 07:34. Nautical Dark: 17:36 - 06:51. Astro Dark: 18:17 - 06:11

Total Clouds (% Sky Obscured)

33
17
0
1
4
5
3
4
3
1
0
0
0
1
1
1
2
2
12
24
44
61
77
95

Low Clouds (% Sky Obscured)

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

Medium Clouds (% Sky Obscured)

18
11
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
12
23
32
32
47
60

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)

8
10
12
13
13
13
12
10
9
8
7
7
6
5
5
5
4
4
4
4
4
4
4
4

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

68
59
55
52
53
55
57
63
73
77
77
71
66
71
70
66
66
68
69
71
72
72
72
72

Pressure (mb)

1014
1014
1015
1015
1015
1015
1015
1016
1016
1017
1017
1018
1018
1019
1019
1019
1019
1020
1020
1020
1020
1020
1020
1021

Ozone (du)

354
350
348
351
353
349
346
343
337
332
325
324
324
326
329
333
340
340
339
338
339
339
339
339

Sunday 4

Waning Gibbous 96%

17:28

09:29

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

Sun - Rise: 08:13, Set: 16:15, Transit: 12:14. Moon - Rise: 17:28, Set: 09:29. Civil Dark: 16:55 - 07:33. Nautical Dark: 17:37 - 06:51. Astro Dark: 18:18 - 06:11

Total Clouds (% Sky Obscured)

63
32
0
3
7
11
22
38
57
71
86
100
100
100
99
80
63
43
30
16
1
2
2
3

Low Clouds (% Sky Obscured)

0
0
0
0
1
1
0
0
1
0
0
0
2
5
9
9
8
7
4
2
0
0
0
1

Medium Clouds (% Sky Obscured)

43
20
0
2
4
8
16
33
57
71
86
100
100
100
99
80
63
43
30
16
0
0
0
0

High Clouds (% Sky Obscured)

0
0
0
0
0
4
1
9
15
17
20
20
15
25
25
19
22
22
17
9
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

68
61
57
53
52
55
64
69
71
70
72
81
87
89
84
81
83
86
87
87
87
87
87
87

Pressure (mb)

1021
1021
1021
1021
1021
1021
1021
1021
1021
1021
1021
1021
1021
1021
1021
1021
1021
1022
1022
1022
1022
1022
1023
1023

Ozone (du)

340
340
343
343
342
341
339
339
340
345
346
350
354
355
358
364
367
369
371
371
371
372
372
372

Monday 5

Waning Gibbous 90%

18:57

09:54

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

Sun - Rise: 08:12, Set: 16:17, Transit: 12:15. Moon - Rise: 18:57, Set: 09:54. Civil Dark: 16:56 - 07:33. Nautical Dark: 17:38 - 06:51. Astro Dark: 18:19 - 06:11

Total Clouds (% Sky Obscured)

3
3
3
5
8
11
8
6
6
9
11
10
8
9
9
20
33
55
71
89
100
100
100
100

Low Clouds (% Sky Obscured)

1
2
2
2
2
2
2
2
2
6
11
10
8
6
2
2
2
3
8
13
19
24
30
35

Medium Clouds (% Sky Obscured)

0
0
0
1
2
2
2
2
3
2
1
0
0
0
0
10
20
30
45
58
76
84
91
100

High Clouds (% Sky Obscured)

0
0
0
1
2
4
3
1
1
0
0
0
3
5
8
20
33
55
67
62
57
73
86
100

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
8
6

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
6
14
23

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
4
5
5
6
6
6
6
5
5
5
5
5
5
5
5
5
5
6
7
7
8
10
13

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

87
83
77
72
74
77
80
83
86
89
91
91
92
92
92
94
92
92
94
91
87
86
86
86

Pressure (mb)

1024
1024
1024
1025
1025
1025
1025
1025
1025
1026
1026
1026
1026
1026
1026
1026
1026
1025
1025
1025
1024
1023
1022
1021

Ozone (du)

372
372
372
372
372
371
371
369
367
365
364
364
364
360
356
353
352
351
350
354
359
364
364
364

Tuesday 6

Waning Gibbous 83%

20:22

10:12

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

Sun - Rise: 08:12, Set: 16:18, Transit: 12:15. Moon - Rise: 20:22, Set: 10:12. Civil Dark: 16:57 - 07:33. Nautical Dark: 17:39 - 06:51. Astro Dark: 18:20 - 06:10

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
68
40
10
26
45
58
48
38
22
42
63
87
92
94
97

Low Clouds (% Sky Obscured)

55
77
100
82
66
50
33
19
7
26
45
58
47
32
16
27
41
55
58
60
64

Medium Clouds (% Sky Obscured)

100
100
100
100
100
100
68
40
10
26
45
58
46
23
6
29
52
75
70
61
53

High Clouds (% Sky Obscured)

100
100
100
90
81
71
47
28
10
26
45
45
33
15
0
23
57
85
58
28
2

ISS Passover

Visibility (miles)

5
4
4
3
5
7
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

Precipitation Type

Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Very Light Rain
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

78
95
95
95
95
95
68
37
3
2
5
1
2
3
0
1
4
9
18
26
28

Precipitation Amount (mm)

0.4
1
1.5
1.4
1.3
0.9
0.3
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

15
16
16
17
13
11
11
10
9
7
7
8
8
7
7
6
6
6
6
7
8

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

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

Pressure (mb)

1021
1019
1017
1016
1016
1015
1015
1016
1016
1017
1017
1017
1018
1018
1018
1018
1019
1019
1019
1019
1018

Ozone (du)

365
365
366
366
371
375
380
379
379
378
373
369
364
354
343
332
323
314
305
304
304

Forecast for Twerton, Bath and North East Somerset, United Kingdom (51.36,-2.38)

Generated: 31/12/25 09:41:09. Forecast: 31/12/25 to 06/01/26. Timezone: UTC+0.00