Clear Outside v1.0 - International Weather Forecasts For Astronomers

Saturday 27

First Quarter 49%

12:08

01:11

11 Bad
12 Bad
13 Bad
14 OK
15 Good
16 Good
17 OK
18 Bad
19 OK
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

Sun - Rise: 08:42, Set: 16:41, Transit: 12:41. Moon - Rise: 12:08, Set: 01:11. Civil Dark: 17:20 - 08:03. Nautical Dark: 18:02 - 07:20. Astro Dark: 18:42 - 06:40

Total Clouds (% Sky Obscured)

4
11
2
40
3
4
21
48
35
59
69
74
70
90
89
91
85
88
100
88
94
83
75
70

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
21
48
35
53
69
72
65
86
80
89
85
88
100
88
94
83
75
70

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)

4
1
2
40
2
3
0
0
1
19
5
2
10
20
36
11
21
11
34
9
2
2
2
2

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
1
7
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
28
98
96
87
100
99

Precipitation Type

Snow
Heavy Rain
Heavy Rain
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

95
95
95
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Amount (mm)

28.9
32.1
30.8
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
8
10
8
9
8
7
6
7
8
8
6
7
6
6
6
6
6
6
8
7
7

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

-12
-12
-11
-9
-7
-5
-3
-2
-1
-0
-0
-1
-1
-1
-2
-2
-0
1
1
1
1
1
0
0

Relative Humidity (%)

43
40
40
44
52
65
78
87
92
98
98
94
89
91
86
86
94
98
96
98
98
98
98
96

Pressure (mb)

1033
1033
1032
1031
1032
1032
1032
1032
1032
1032
1033
1033
1033
1032
1032
1032
1032
1032
1031
1031
1031
1031
1031
1031

Ozone (du)

299
299
298
297
297
297
296
295
294
295
295
296
298
299
299
299
299
299
297
296
296
295
293
292

Sunday 28

Waxing Gibbous 61%

12:21

02:34

11 Bad
12 OK
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 Good
05 Good
06 Good
07 Good
08 Good
09 Good
10 Good

Sun - Rise: 08:42, Set: 16:42, Transit: 12:42. Moon - Rise: 12:21, Set: 02:34. Civil Dark: 17:21 - 08:03. Nautical Dark: 18:03 - 07:21. Astro Dark: 18:43 - 06:41

Total Clouds (% Sky Obscured)

65
40
0
0
0
0
1
1
0
0
0
0
0
0
0
0
0
0
0
0
1
1
0
0

Low Clouds (% Sky Obscured)

65
40
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
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)

1
0
0
0
0
0
1
1
0
0
0
0
0
0
0
0
0
0
0
0
1
1
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 (%)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

-1
-2
-3
-3
-2
-2
-2
-3
-4
-5
-6
-7
-7
-7
-8
-8
-8
-9
-9
-9
-9
-9
-10
-11

Relative Humidity (%)

88
76
66
64
68
76
84
83
80
77
72
68
68
68
68
68
68
66
65
65
65
64
61
54

Pressure (mb)

1031
1031
1030
1030
1029
1029
1029
1029
1029
1029
1028
1028
1028
1027
1027
1027
1026
1026
1026
1026
1026
1026
1026
1026

Ozone (du)

292
292
292
291
291
290
289
288
289
289
290
291
290
293
298
302
305
303
300
298
299
301
300
300

Monday 29

Waxing Gibbous 72%

12:37

04:02

11 Good
12 Good
13 Good
14 Good
15 OK
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 OK
06 Bad
07 OK
08 OK
09 OK
10 OK

Sun - Rise: 08:42, Set: 16:43, Transit: 12:42. Moon - Rise: 12:37, Set: 04:02. Civil Dark: 17:22 - 08:03. Nautical Dark: 18:04 - 07:21. Astro Dark: 18:44 - 06:41

Total Clouds (% Sky Obscured)

0
0
0
0
39
79
74
82
85
92
85
52
89
53
50
57
77
51
30
49
47
32
29
25

Low Clouds (% Sky Obscured)

0
0
0
0
39
75
70
81
85
92
84
46
87
45
43
51
76
48
30
49
47
32
28
22

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

5
5
5
6
6
5
4
4
3
4
4
4
5
5
6
8
8
9
10
8
7
7
6
6

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

-12
-12
-12
-10
-7
-4
-2
-1
0
1
0
-1
-1
-2
-3
-4
-5
-6
-7
-7
-6
-6
-3
-3

Relative Humidity (%)

45
38
35
39
52
70
86
92
94
96
93
88
86
81
73
66
61
59
55
57
59
62
81
78

Pressure (mb)

1026
1026
1025
1025
1025
1025
1025
1025
1025
1025
1025
1025
1026
1026
1026
1027
1027
1028
1028
1028
1029
1029
1030
1030

Ozone (du)

303
303
301
302
299
296
295
294
293
292
290
290
291
290
287
286
284
286
284
284
285
285
280
278

Tuesday 30

Waxing Gibbous 82%

12:58

05:33

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 OK
01 Bad
02 Bad
03 Bad
04 Bad
05 Bad
06 Bad
07 Bad
08 Bad
09 Bad
10 Bad

Sun - Rise: 08:42, Set: 16:44, Transit: 12:43. Moon - Rise: 12:58, Set: 05:33. Civil Dark: 17:23 - 08:03. Nautical Dark: 18:05 - 07:21. Astro Dark: 18:45 - 06:41

Total Clouds (% Sky Obscured)

10
1
9
18
25
41
55
70
72
64
65
57
44
37
45
59
66
67
70
80
80
99
98
97

Low Clouds (% Sky Obscured)

10
1
9
18
25
38
47
58
63
61
62
55
44
37
45
55
63
67
70
80
80
87
81
79

Medium Clouds (% Sky Obscured)

0
0
0
0
0
4
5
8
5
3
0
0
0
0
1
2
3
6
11
13
19
28
40
38

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
4
6
10
9
4
1
1
1
0
3
3
2
7
14
14
28

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
8
7
7
5
5
5
5
5
5
4
5
5
6
6
6
7
7
8
9
10
11
12

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

73
68
63
60
60
68
78
83
88
88
89
86
91
91
89
89
87
91
91
91
92
93
93
91

Pressure (mb)

1030
1031
1031
1030
1030
1030
1030
1030
1030
1030
1030
1030
1030
1029
1029
1028
1028
1028
1027
1026
1026
1026
1025
1025

Ozone (du)

282
289
292
296
301
310
314
318
326
338
341
341
339
340
343
344
343
340
332
328
328
328
328
327

Wednesday 31

Waxing Gibbous 91%

13:27

07:02

11 Bad
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

Sun - Rise: 08:42, Set: 16:45, Transit: 12:43. Moon - Rise: 13:27, Set: 07:02. Civil Dark: 17:24 - 08:03. Nautical Dark: 18:06 - 07:21. Astro Dark: 18:46 - 06:41

Total Clouds (% Sky Obscured)

96
95
87
88
96
90
83
77
80
86
92
83
77
71
82
92
99
97
94
92
92
93
94
96

Low Clouds (% Sky Obscured)

78
78
79
83
89
82
76
70
76
84
90
83
75
71
80
88
96
94
92
90
90
91
93
95

Medium Clouds (% Sky Obscured)

42
33
32
22
15
10
6
0
0
0
0
0
0
0
12
23
35
23
12
0
0
0
0
22

High Clouds (% Sky Obscured)

1
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
2
4
11
40

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 (%)

30
33
24
29
20
24
25
10
8
7
3
2
2
0
10
14
17
18
19
19
17
14
11
18

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
13
13
12
11
10
8
7
7
6
5
6
7
7
8
9
10
11
12
13
14
16
17

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

85
85
76
68
68
72
77
80
77
73
73
76
80
86
88
89
91
93
93
93
94
89
86
83

Pressure (mb)

1025
1024
1024
1024
1024
1024
1024
1024
1024
1024
1025
1024
1024
1024
1023
1023
1022
1022
1021
1020
1019
1018
1018
1017

Ozone (du)

326
326
326
325
325
325
327
327
329
331
332
332
328
326
322
320
318
316
313
309
306
305
304
303

Thursday 1

Waxing Gibbous 97%

14:10

08:19

11 Bad
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

Sun - Rise: 08:42, Set: 16:46, Transit: 12:44. Moon - Rise: 14:10, Set: 08:19. Civil Dark: 17:25 - 08:03. Nautical Dark: 18:07 - 07:21. Astro Dark: 18:47 - 06:41

Total Clouds (% Sky Obscured)

98
100
100
100
100
100
100
100
100
100
100
100
100
100
91
80
72
81
91
99
97
95
94
93

Low Clouds (% Sky Obscured)

98
100
100
100
100
100
100
100
95
89
84
90
95
100
91
80
72
81
91
99
96
91
88
85

Medium Clouds (% Sky Obscured)

45
68
47
26
6
27
48
69
67
66
65
76
88
100
91
80
72
81
70
63
43
22
2
2

High Clouds (% Sky Obscured)

69
96
83
72
65
60
53
45
45
45
45
45
55
60
37
24
1
1
0
0
0
0
0
1

ISS Passover

Visibility (miles)

9
9
9
9
8
8
6
4
2
1
1
0
3
5
7
7
7
6
7
8
9
7
4
2

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

Precipitation Probability (%)

24
29
31
34
37
51
60
68
70
66
64
74
86
95
94
88
79
79
76
72
58
46
34
36

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

18
18
19
19
19
19
19
19
19
20
20
21
21
21
21
19
17
15
15
15
15
16
16
16

Chance of Frost

Temperature (°C)

3
4
4
4
4
4
4
4
4
4
3
3
3
4
4
4
4
4
3
3
3
3
2
2

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

85
85
86
88
89
93
93
91
91
93
94
96
89
82
77
79
79
80
82
83
86
85
85
83

Pressure (mb)

1016
1015
1014
1013
1011
1010
1010
1009
1009
1008
1008
1007
1007
1007
1007
1007
1007
1007
1008
1009
1009
1010
1011
1011

Ozone (du)

304
305
306
313
319
326
355
383
412
416
421
426
421
416
411
405
398
392
390
389
387
387
386
386

Friday 2

Waxing Gibbous 100%

15:11

09:16

11 Bad
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

Sun - Rise: 08:41, Set: 16:47, Transit: 12:44. Moon - Rise: 15:11, Set: 09:16. Civil Dark: 17:26 - 08:03. Nautical Dark: 18:08 - 07:21. Astro Dark: 18:47 - 06:41

Total Clouds (% Sky Obscured)

92
92
94
95
98
90
81
72
75
78
79
85
91
97
96
96
96
91
86
81

Low Clouds (% Sky Obscured)

84
81
82
83
83
80
76
71
64
59
51
59
67
75
79
80
80
72
66
60

Medium Clouds (% Sky Obscured)

4
6
10
17
27
19
12
4
9
15
20
41
62
86
77
64
51
39
24
7

High Clouds (% Sky Obscured)

1
1
2
4
6
5
4
4
3
2
1
2
3
4
13
21
29
20
12
3

ISS Passover

Visibility (miles)

4
6
8
9
9
9
9
9
9
9
9
9
8
7
6
4
2
0
3
6

Fog (%)

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

Precipitation Probability (%)

36
35
39
42
44
49
50
48
43
37
28
29
32
35
46
47
48
52
47
32

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

16
16
16
16
15
14
13
12
11
10
10
10
10
10
11
11
12
13
12
12

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

-1
-0
-0
0
0
1
1
1
1
1
0
0
0
0
0
1
1
1
1
-0

Relative Humidity (%)

79
77
75
77
79
83
85
88
91
89
88
89
89
89
89
93
96
96
96
93

Pressure (mb)

1012
1013
1013
1014
1014
1015
1015
1016
1017
1017
1018
1018
1019
1019
1019
1019
1019
1019
1019
1019

Ozone (du)

384
381
379
375
372
368
366
363
360
356
351
346
330
313
297
296
295
295
301
307

Forecast for Elst, Flemish Brabant, Kingdom of Belgium (50.77,4.89)

Generated: 27/12/25 11:18:13. Forecast: 27/12/25 to 02/01/26. Timezone: UTC+1.00