Clear Outside v1.0 - International Weather Forecasts For Astronomers

Wednesday 31

Waxing Gibbous 97%

13:27

06:31

23 Good
00 OK
01 OK
02 OK
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
20 Bad
21 Bad
22 Bad

Sun - Rise: 08:08, Set: 16:05, Transit: 12:06. Moon - Rise: 13:27, Set: 06:31. Civil Dark: 16:44 - 07:28. Nautical Dark: 17:27 - 06:45. Astro Dark: 18:08 - 06:04

Total Clouds (% Sky Obscured)

6
9
23
33
57
71
86
58
100
100
100
89
87
80
99
97
100
100
100
45
36
52
68
43

Low Clouds (% Sky Obscured)

6
9
23
33
36
0
36
43
72
41
54
47
45
49
51
54
50
33
5
34
29
25
25
9

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
18
36
32
3
0
0
0
0
0
0
11
8
5
4
3
5

High Clouds (% Sky Obscured)

4
9
5
4
57
71
86
43
76
97
51
32
87
80
99
95
100
100
100
45
16
10
20
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 (%)

0
0
0
0
0
0
0
0
1
3
4
1
0
0
0
2
1
2
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
7
7
9
11
12
12
12
13
13
13
13
12
12
12
12
12
12
12
12
12
12
12

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

91
91
89
89
87
84
73
74
75
73
78
80
91
79
71
75
76
79
83
89
93
91
88
88

Pressure (mb)

1021
1021
1020
1019
1018
1017
1015
1014
1014
1013
1013
1013
1012
1012
1011
1010
1010
1010
1010
1010
1010
1010
1010
1010

Ozone (du)

303
305
305
307
308
299
298
299
306
309
319
321
331
367
383
383
383
381
376
366
365
365
369
360

Thursday 1

Waxing Gibbous 95%

14:29

07:48

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

Sun - Rise: 08:07, Set: 16:06, Transit: 12:07. Moon - Rise: 14:29, Set: 07:48. Civil Dark: 16:45 - 07:28. Nautical Dark: 17:28 - 06:45. Astro Dark: 18:09 - 06:04

Total Clouds (% Sky Obscured)

41
51
61
54
41
87
69
94
100
98
33
50
0
0
0
5
18
50
10
0
0
0
1
1

Low Clouds (% Sky Obscured)

0
0
49
45
6
44
51
53
100
61
13
50
0
0
0
5
18
50
10
0
0
0
0
0

Medium Clouds (% Sky Obscured)

21
51
61
19
41
40
23
92
45
38
11
0
0
0
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

10
6
5
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
0
0
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
Very Light Rain
None
None
None
Very Light Rain
Very Light Rain
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

0
0
3
13
49
25
30
34
61
52
12
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Amount (mm)

0
0
0
0
0.3
0
0
0
0.3
0.2
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

86
83
84
84
83
94
96
93
86
73
77
73
64
61
64
64
64
68
71
74
75
78
80
80

Pressure (mb)

1009
1009
1009
1008
1008
1007
1007
1007
1006
1006
1007
1008
1008
1008
1008
1008
1008
1009
1009
1010
1010
1011
1011
1011

Ozone (du)

356
357
359
356
351
347
350
356
357
361
364
367
366
367
371
364
351
339
328
318
307
302
303
305

Friday 2

Waxing Gibbous 100%

15:50

08:45

23 Good
00 Good
01 Good
02 Good
03 Good
04 Good
05 Good
06 Good
07 Good
08 Good
09 Good
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

Sun - Rise: 08:07, Set: 16:07, Transit: 12:07. Moon - Rise: 15:50, Set: 08:45. Civil Dark: 16:46 - 07:28. Nautical Dark: 17:29 - 06:45. Astro Dark: 18:10 - 06:04

Total Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
0
0
0
1

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
1

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)

10
11
10
10
10
11
11
11
11
11
11
12
13
14
14
14
13
12
11
10
10
10
10
10

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

77
75
74
74
72
72
70
67
67
66
63
59
51
49
49
49
51
54
57
61
62
62
64
67

Pressure (mb)

1012
1012
1012
1012
1012
1012
1012
1012
1013
1013
1014
1014
1014
1014
1014
1014
1015
1015
1016
1016
1017
1017
1018
1018

Ozone (du)

312
315
320
329
340
346
349
355
356
356
352
352
354
350
354
354
353
351
346
352
354
354
337
330

Saturday 3

Full Moon 99%

17:20

09:22

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

Sun - Rise: 08:07, Set: 16:08, Transit: 12:07. Moon - Rise: 17:20, Set: 09:22. Civil Dark: 16:47 - 07:28. Nautical Dark: 17:30 - 06:45. Astro Dark: 18:11 - 06:04

Total Clouds (% Sky Obscured)

1
1
2
1
0
0
1
13
25
37
31
25
22
15
8
0
0
0
0
1
1
3
15
20

Low Clouds (% Sky Obscured)

1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
2
15
20

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
9
12
16
12
11
9
7
4
0
0
0
0
1
1
3
15
20

High Clouds (% Sky Obscured)

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

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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

68
69
69
68
68
68
68
68
66
66
66
59
53
50
48
52
57
65
72
75
76
76
75
75

Pressure (mb)

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

Ozone (du)

331
334
339
344
343
345
345
346
348
349
350
350
353
354
354
355
354
350
348
351
355
362
367
370

Sunday 4

Waning Gibbous 96%

18:50

09:48

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

Sun - Rise: 08:07, Set: 16:09, Transit: 12:08. Moon - Rise: 18:50, Set: 09:48. Civil Dark: 16:49 - 07:27. Nautical Dark: 17:31 - 06:45. Astro Dark: 18:12 - 06:04

Total Clouds (% Sky Obscured)

15
12
20
20
10
5
5
5
5
4
7
11
17
22
27
30
20
10
0
0
1
0
3
7

Low Clouds (% Sky Obscured)

15
11
12
8
5
5
5
5
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

15
2
20
20
10
5
5
5
1
1
4
10
13
17
17
14
7
4
0
0
0
0
0
0

High Clouds (% Sky Obscured)

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

ISS Passover

Visibility (miles)

9
9
9
9
9
8
3
0
2
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
2
26
27
34
16
8
1
0
0
0
0
0
0
0
0
0
1
1
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
7
6
6
7
7
6
7
6
5
6
7
9
9
9
9
8
7
7
6
5
5
5

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

76
84
94
94
96
98
98
98
94
84
78
75
69
64
65
68
70
71
74
77
77
77
78
78

Pressure (mb)

1020
1020
1020
1019
1019
1019
1019
1019
1019
1019
1020
1020
1020
1020
1020
1020
1020
1020
1020
1021
1021
1021
1021
1021

Ozone (du)

374
378
381
385
387
390
390
391
399
402
401
398
388
387
390
392
394
393
391
389
387
385
383
381

Monday 5

Waning Gibbous 90%

20:15

10:06

23 Good
00 OK
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
20 Bad
21 Bad
22 OK

Sun - Rise: 08:06, Set: 16:10, Transit: 12:08. Moon - Rise: 20:15, Set: 10:06. Civil Dark: 16:50 - 07:27. Nautical Dark: 17:32 - 06:44. Astro Dark: 18:13 - 06:04

Total Clouds (% Sky Obscured)

10
38
67
90
85
85
76
82
85
92
94
96
100
99
98
97
98
99
100
95
92
91
62
32

Low Clouds (% Sky Obscured)

0
2
4
6
11
15
17
11
6
1
10
20
34
43
54
65
68
71
73
73
73
73
49
24

Medium Clouds (% Sky Obscured)

0
8
17
30
30
30
20
15
24
30
49
69
88
92
93
92
94
97
100
87
73
59
56
32

High Clouds (% Sky Obscured)

6
21
42
59
44
22
0
33
67
92
67
33
0
0
0
0
0
2
3
4
3
0
0
1

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
1
1
1
2
3
2
5
4
1
7
10
10
24
27
28
39
42
38
31
22

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

77
75
75
74
74
75
77
76
75
74
71
65
60
55
59
65
70
71
74
76
74
75
75
77

Pressure (mb)

1021
1021
1021
1020
1020
1020
1020
1019
1019
1019
1019
1019
1018
1018
1018
1017
1017
1017
1018
1018
1019
1019
1020
1020

Ozone (du)

379
377
373
369
366
365
365
365
366
367
368
368
369
369
369
369
369
370
371
371
374
376
379
379

Tuesday 6

Waning Gibbous 83%

21:35

10:19

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

Sun - Rise: 08:06, Set: 16:12, Transit: 12:09. Moon - Rise: 21:35, Set: 10:19. Civil Dark: 16:51 - 07:27. Nautical Dark: 17:33 - 06:44. Astro Dark: 18:14 - 06:04

Total Clouds (% Sky Obscured)

3
4
4
5
0
5
5
5
5
15
24
31
31
34
38
43
62
81
100

Low Clouds (% Sky Obscured)

0
0
0
0
0
5
5
5
5
15
24
13
4
2
1
1
2
3
5

Medium Clouds (% Sky Obscured)

3
4
4
5
0
5
0
0
0
0
0
0
0
2
5
8
27
54
75

High Clouds (% Sky Obscured)

1
1
0
0
0
3
5
5
4
3
2
2
2
8
13
18
45
73
100

ISS Passover

Visibility (miles)

9
9
7
5
2
2
1
0
3
6
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

Precipitation Type

None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

4
7
12
16
27
25
22
22
17
2
2
2
0
1
1
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

Wind Speed/Direction (mph)

5
6
5
5
5
5
5
5
5
4
4
4
5
5
5
5
5
5
5

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-3
-3
-5
-5
-5
-6
-6
-7
-6
-5
-4
-3
-3
-4
0
0
0
0
-0

Dew Point (°C)

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

Relative Humidity (%)

80
81
83
86
89
91
96
98
94
91
87
84
83
78
80
81
83
84
86

Pressure (mb)

1020
1021
1021
1022
1022
1022
1023
1023
1023
1024
1025
1025
1025
1025
1024
1024
1024
1024
1023

Ozone (du)

380
381
380
380
379
374
369
363
364
365
366
347
328
309
307
305
303
301
300

Forecast for Bray Court, Windsor and Maidenhead, United Kingdom (51.50,-0.70)

Generated: 31/12/25 23:57:16. Forecast: 31/12/25 to 06/01/26. Timezone: UTC+0.00