Clear Outside v1.0 - International Weather Forecasts For Astronomers

Saturday 13

Waning Crescent 27%

02:18

12:46

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 Bad
18 Bad
19 Bad

Sun - Rise: 08:01, Set: 15:53, Transit: 11:57. Moon - Rise: 02:18, Set: 12:46. Civil Dark: 16:33 - 07:21. Nautical Dark: 17:17 - 06:38. Astro Dark: 17:57 - 05:57

Total Clouds (% Sky Obscured)

11
28
27
36
65
90
95
94
91
96
96
93
100
99
87
80
90
77
82
87
87
89
88
85

Low Clouds (% Sky Obscured)

11
28
27
36
52
53
48
49
47
57
56
53
59
76
78
73
81
77
81
83
76
81
85
78

Medium Clouds (% Sky Obscured)

11
28
17
36
24
40
46
61
70
40
36
70
84
71
33
9
9
3
3
3
3
3
3
6

High Clouds (% Sky Obscured)

11
28
9
22
24
6
3
20
69
68
81
63
97
97
38
54
21
10
33
74
82
79
52
72

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
6
6
7
8
8
9
9
9
10
10
10
11
12
14
14
14
14
14
14
13
13
13

Chance of Frost

Temperature (°C)

7
6
6
6
6
6
6
7
7
7
8
8
8
8
9
10
10
10
10
10
10
9
9
9

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

93
93
93
91
90
90
91
90
91
90
88
90
88
85
81
78
76
72
73
78
84
87
91
91

Pressure (mb)

1026
1025
1025
1024
1024
1024
1023
1023
1022
1021
1021
1021
1020
1020
1020
1019
1018
1017
1017
1016
1016
1015
1014
1014

Ozone (du)

316
311
307
306
305
304
303
301
302
302
304
303
303
302
299
297
295
293
291
291
292
292
293
294

Sunday 14

Waning Crescent 19%

03:30

12:59

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: 08:02, Set: 15:54, Transit: 11:58. Moon - Rise: 03:30, Set: 12:59. Civil Dark: 16:34 - 07:22. Nautical Dark: 17:17 - 06:39. Astro Dark: 17:58 - 05:58

Total Clouds (% Sky Obscured)

82
96
91
95
100
100
100
100
100
100
100
100
100
100
100
73
58
77
57
93
84
94
79
69

Low Clouds (% Sky Obscured)

75
93
83
90
88
95
100
100
100
100
100
100
100
100
100
72
56
76
54
86
75
89
66
68

Medium Clouds (% Sky Obscured)

3
7
63
52
20
22
36
35
45
22
3
2
0
0
0
0
0
0
0
6
25
6
16
3

High Clouds (% Sky Obscured)

69
53
57
34
100
90
67
16
10
38
3
2
0
0
0
0
0
0
0
0
2
2
6
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 (%)

0
1
4
8
7
1
3
0
0
4
17
18
6
5
3
2
2
10
19
2
2
14
0
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
16
17
15
15
15
15
15
13
13
15
14
12
12
12
13
13
13
13
13
14
14
14
14

Chance of Frost

Temperature (°C)

9
10
10
10
10
10
10
10
9
9
9
9
9
9
10
10
11
11
11
11
10
10
10
10

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

88
82
81
84
84
85
84
82
88
91
85
82
85
84
85
85
85
85
85
87
88
88
85
84

Pressure (mb)

1013
1013
1012
1012
1011
1010
1010
1009
1008
1008
1007
1007
1007
1007
1007
1006
1005
1005
1004
1004
1004
1004
1004
1005

Ozone (du)

293
294
295
296
297
296
296
298
299
299
299
302
305
306
309
310
313
314
315
318
321
326
328
328

Monday 15

Waning Crescent 12%

04:43

13:15

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 OK

Sun - Rise: 08:03, Set: 15:54, Transit: 11:58. Moon - Rise: 04:43, Set: 13:15. Civil Dark: 16:34 - 07:23. Nautical Dark: 17:17 - 06:40. Astro Dark: 17:58 - 05:59

Total Clouds (% Sky Obscured)

74
97
92
93
96
100
100
100
100
100
100
100
100
100
99
97
89
81
74
84
85
87
66
32

Low Clouds (% Sky Obscured)

62
78
71
74
56
62
57
56
88
100
99
84
77
53
56
56
52
46
54
44
12
0
2
4

Medium Clouds (% Sky Obscured)

14
29
31
29
30
81
49
30
30
57
100
100
94
77
86
91
89
81
60
83
60
53
56
26

High Clouds (% Sky Obscured)

2
3
44
55
72
98
100
100
100
100
100
100
100
41
22
10
10
5
3
1
0
0
0
0

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
8
9
7
5
8
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
Very Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Very Light Rain
Very Light Rain
Very Light Rain
None
None
None
None
None
None
None
None

Precipitation Probability (%)

0
2
3
5
17
4
6
20
57
86
95
95
87
64
63
56
31
4
2
1
1
0
0
0

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0.3
0.7
1.6
1.2
0.5
0.2
0.3
0.3
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

14
12
11
10
9
9
8
7
8
9
8
7
8
9
10
9
9
10
10
10
9
7
6
4

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

83
87
90
93
93
91
95
93
93
93
93
93
95
95
90
91
90
87
84
82
82
85
86
88

Pressure (mb)

1005
1005
1005
1005
1005
1005
1005
1005
1005
1005
1006
1007
1008
1009
1011
1011
1012
1013
1013
1014
1015
1016
1017
1017

Ozone (du)

327
328
325
322
317
314
310
304
300
298
296
293
292
292
294
299
305
310
312
322
333
338
345
356

Tuesday 16

Waning Crescent 7%

05:56

13:36

20 Good
21 OK
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: 08:03, Set: 15:54, Transit: 11:59. Moon - Rise: 05:56, Set: 13:36. Civil Dark: 16:34 - 07:23. Nautical Dark: 17:17 - 06:40. Astro Dark: 17:58 - 05:59

Total Clouds (% Sky Obscured)

6
34
59
90
74
58
43
69
79
98
98
99
100
100
100
100
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

5
13
19
25
17
8
0
7
14
20
31
42
56
62
65
64
71
78
75
76
80
82
91
93

Medium Clouds (% Sky Obscured)

1
1
0
0
0
0
0
11
22
32
38
44
45
51
57
61
53
92
100
98
96
87
93
90

High Clouds (% Sky Obscured)

0
31
59
89
73
57
43
56
59
69
82
92
100
100
100
100
73
40
5
5
10
15
10
10

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
Light Rain
Light Rain
Light Rain
Light Rain
Very Light Rain
Very Light Rain
Light Rain
Light Rain
Light Rain
Light Rain

Precipitation Probability (%)

0
0
0
0
0
0
0
0
0
0
1
7
15
46
69
84
78
75
66
66
73
75
74
71

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.4
0.5
0.4
0.4
0.3
0.3
0.4
0.5
0.4
0.4

Wind Speed/Direction (mph)

4
4
3
3
3
3
2
2
3
3
4
5
6
7
8
9
10
11
12
11
11
11
12
13

Chance of Frost

Temperature (°C)

4
4
4
3
3
2
2
2
2
3
3
4
4
5
6
7
8
8
8
8
8
8
9
9

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

89
89
91
91
91
91
91
91
89
89
89
88
88
86
83
79
78
78
78
82
85
87
85
84

Pressure (mb)

1018
1019
1019
1019
1019
1019
1019
1020
1019
1019
1019
1020
1020
1020
1019
1019
1018
1017
1017
1016
1016
1016
1016
1015

Ozone (du)

354
348
338
333
330
325
322
320
317
317
314
311
311
309
309
307
307
306
303
301
300
299
297
297

Wednesday 17

Waning Crescent 3%

07:07

14:05

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: 08:04, Set: 15:54, Transit: 11:59. Moon - Rise: 07:07, Set: 14:05. Civil Dark: 16:35 - 07:24. Nautical Dark: 17:18 - 06:41. Astro Dark: 17:58 - 06:00

Total Clouds (% Sky Obscured)

100
98
96
97
100
100
100
85
74
61
100
99
99
100
100
100
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

93
95
95
96
83
66
50
53
56
59
74
84
94
96
98
100
96
92
88
89
89
89
84
79

Medium Clouds (% Sky Obscured)

91
84
59
67
63
62
72
51
28
15
39
37
24
18
12
10
10
10
15
15
15
20
34
51

High Clouds (% Sky Obscured)

15
28
57
86
100
100
100
51
47
8
70
77
91
96
99
100
100
100
100
99
99
96
96
98

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
8

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

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

Precipitation Probability (%)

63
60
57
58
48
36
26
15
4
0
12
11
11
17
25
29
38
49
65
74
84
95
95
95

Precipitation Amount (mm)

0.3
0.2
0
0.3
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.3
0.4
0.5
0.6
0.7
0.8

Wind Speed/Direction (mph)

13
12
11
11
10
10
10
10
9
9
8
9
10
11
13
15
17
18
19
20
20
20
19
19

Chance of Frost

Temperature (°C)

9
9
9
9
9
9
9
9
8
8
8
9
9
9
10
10
10
10
10
9
9
10
10
10

Feels Like (°C)

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

Dew Point (°C)

7
8
8
8
8
8
7
7
7
6
6
7
8
8
8
8
7
7
7
7
6
7
7
7

Relative Humidity (%)

85
88
90
90
91
88
85
85
88
85
87
88
90
90
87
85
84
82
82
82
81
81
81
81

Pressure (mb)

1015
1015
1015
1014
1014
1014
1014
1014
1014
1014
1014
1013
1013
1012
1011
1010
1008
1007
1006
1004
1003
1002
1001
1001

Ozone (du)

297
296
295
296
297
295
294
295
300
298
296
294
293
291
291
290
289
287
284
282
280
278
276
275

Thursday 18

Waning Crescent 1%

08:11

14:46

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 OK
18 OK
19 OK

Sun - Rise: 08:05, Set: 15:55, Transit: 12:00. Moon - Rise: 08:11, Set: 14:46. Civil Dark: 16:35 - 07:25. Nautical Dark: 17:18 - 06:41. Astro Dark: 17:59 - 06:01

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
81
65
47
63
78
94
88
84
79
74
69
64
60
49
36
39
42

Low Clouds (% Sky Obscured)

74
63
51
39
44
43
49
43
40
37
42
50
59
66
73
79
68
56
44
48
49
36
39
42

Medium Clouds (% Sky Obscured)

71
79
88
97
96
91
60
40
39
47
63
72
64
53
43
32
41
48
57
39
20
0
1
2

High Clouds (% Sky Obscured)

100
100
100
100
100
100
100
67
37
15
55
73
89
59
29
0
1
2
2
2
1
0
0
0

ISS Passover

Visibility (miles)

7
6
7
8
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

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

Precipitation Probability (%)

83
83
78
71
70
63
48
31
14
0
2
2
1
4
5
5
10
12
11
8
5
0
1
1

Precipitation Amount (mm)

0.4
0.5
0.4
0.3
0.3
0.3
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

18
19
19
19
19
17
15
14
13
13
12
12
11
10
11
12
13
12
11
9
9
8
8
7

Chance of Frost

Temperature (°C)

11
11
11
11
10
10
9
9
8
7
7
7
7
7
8
9
10
9
9
9
8
8
7
6

Feels Like (°C)

5
5
5
5
5
4
4
4
4
4
4
3
3
4
4
4
4
8
8
8
7
7
7
5

Dew Point (°C)

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

Relative Humidity (%)

83
83
84
87
88
87
84
82
82
82
84
84
84
85
82
80
76
78
78
80
81
82
85
85

Pressure (mb)

1001
1001
1001
1001
1001
1001
1002
1002
1003
1003
1004
1005
1006
1007
1008
1008
1009
1009
1010
1011
1011
1012
1013
1014

Ozone (du)

275
275
278
280
283
292
300
309
309
308
308
317
326
335
343
351
359
366
374
381
386
391
396
385

Friday 19

Waning Crescent 0%

09:05

15:41

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

Sun - Rise: 08:05, Set: 15:55, Transit: 12:00. Moon - Rise: 09:05, Set: 15:41. Civil Dark: 16:35 - 07:25. Nautical Dark: 17:19 - 06:42. Astro Dark: 17:59 - 06:01

Total Clouds (% Sky Obscured)

48
40
35
31
32
27
24
18
14
17
18
24
25
30
29
38

Low Clouds (% Sky Obscured)

48
40
35
31
32
27
24
18
14
17
18
24
25
24
23
30

Medium Clouds (% Sky Obscured)

3
2
2
1
1
0
0
0
0
0
12
23
25
30
29
38

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
3
6
9
18
24
25
30
29
38

ISS Passover

Visibility (miles)

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

Precipitation Type

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

Precipitation Probability (%)

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

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

4
4
3
4
4
3
3
3
3
3
3
3
4
4
4
4

Relative Humidity (%)

86
86
86
90
91
89
89
89
89
91
91
91
93
93
90
87

Pressure (mb)

1014
1015
1015
1015
1016
1016
1016
1016
1016
1016
1016
1016
1016
1016
1015
1015

Ozone (du)

375
364
346
328
311
306
300
295
293
292
290
289
289
288
290
291

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

Generated: 13/12/25 20:38:54. Forecast: 13/12/25 to 19/12/25. Timezone: UTC+0.00