Clear Outside v1.0 - International Weather Forecasts For Astronomers

Wednesday 10

Waning Gibbous 67%

23:16

12:38

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
20 Bad
21 Bad
22 Bad
23 Bad

Sun - Rise: 08:31, Set: 16:35, Transit: 12:33. Moon - Rise: 23:16, Set: 12:38. Civil Dark: 17:13 - 07:53. Nautical Dark: 17:56 - 07:10. Astro Dark: 18:36 - 06:30

Total Clouds (% Sky Obscured)

92
93
95
95
100
100
100
100
100
100
100
100
100
100
98
100
100
99
74
100
100
64
71
73

Low Clouds (% Sky Obscured)

60
49
62
48
55
49
50
69
46
46
60
58
54
53
59
48
47
35
57
55
43
62
71
73

Medium Clouds (% Sky Obscured)

92
93
90
88
90
99
100
100
100
100
100
100
100
100
92
100
90
98
60
98
100
40
8
0

High Clouds (% Sky Obscured)

1
0
0
19
100
95
100
53
100
100
100
100
100
100
84
100
84
57
31
85
100
35
2
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 (%)

4
14
17
3
1
0
0
0
0
0
0
1
0
1
0
0
0
0
0
0
0
0
0
2

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)

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

Chance of Frost

Temperature (°C)

12
12
12
12
11
11
11
11
11
11
11
12
12
12
12
12
11
11
10
10
9
9
9
9

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

83
84
83
83
84
87
90
91
91
90
87
86
83
81
79
79
80
84
85
85
87
90
91
91

Pressure (mb)

1013
1013
1014
1014
1015
1015
1015
1016
1016
1017
1018
1018
1019
1019
1019
1019
1020
1021
1021
1022
1023
1023
1023
1024

Ozone (du)

282
280
279
279
277
277
278
279
280
281
281
279
279
279
279
281
283
288
290
289
293
296
300
300

Thursday 11

Third Quarter 57%

No Rise

12:51

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

Sun - Rise: 08:32, Set: 16:35, Transit: 12:33. Moon - Rise: No Rise, Set: 12:51. Civil Dark: 17:13 - 07:53. Nautical Dark: 17:56 - 07:11. Astro Dark: 18:36 - 06:31

Total Clouds (% Sky Obscured)

51
43
46
35
58
68
72
66
68
35
36
29
26
40
52
68
60
58
67
83
83
68
59
35

Low Clouds (% Sky Obscured)

51
43
46
35
58
68
72
66
68
35
36
29
26
40
52
68
60
56
67
81
81
65
54
30

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
2
35

High Clouds (% Sky Obscured)

0
0
0
0
1
1
0
0
0
0
0
0
0
0
1
1
0
16
13
25
25
15
15
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
6
66
95
100
100
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
7
7
7
6
6
6
7
6
6
7
8
7
7
6
6
6
7
7
7
7
7
7

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

95
96
95
96
96
94
94
94
94
93
88
81
76
69
69
74
81
87
90
91
88
85
84
84

Pressure (mb)

1024
1024
1024
1024
1024
1024
1024
1024
1024
1024
1024
1024
1024
1023
1022
1022
1022
1021
1021
1021
1021
1021
1021
1021

Ozone (du)

304
308
311
308
303
300
300
297
297
294
294
296
298
300
301
301
301
300
299
300
301
303
304
304

Friday 12

Waning Crescent 46%

00:31

13:02

00 OK
01 OK
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 Bad
23 Bad

Sun - Rise: 08:33, Set: 16:35, Transit: 12:34. Moon - Rise: 00:31, Set: 13:02. Civil Dark: 17:14 - 07:54. Nautical Dark: 17:56 - 07:12. Astro Dark: 18:36 - 06:32

Total Clouds (% Sky Obscured)

24
43
82
49
89
98
100
100
98
98
92
95
85
99
100
100
100
100
95
97
95
100
100
100

Low Clouds (% Sky Obscured)

11
21
21
32
33
37
52
61
74
71
66
48
54
76
56
59
57
40
48
53
59
64
61
50

Medium Clouds (% Sky Obscured)

24
43
76
48
84
66
59
52
44
46
44
28
38
39
91
95
93
94
73
23
56
94
89
98

High Clouds (% Sky Obscured)

13
10
15
1
6
85
100
100
88
80
33
79
44
74
100
100
98
100
72
80
84
98
100
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
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
2
7
25
21
4
2
1
2
5
1
0
4
0
0
0
0
0
0
2
2
2
2
1

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)

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

Chance of Frost

Temperature (°C)

6
6
5
5
5
6
6
7
8
8
8
9
10
11
11
11
10
10
9
9
9
9
9
8

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

83
85
86
88
91
86
87
87
87
87
84
81
77
76
79
81
85
90
91
91
91
91
91
91

Pressure (mb)

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

Ozone (du)

304
306
304
299
298
297
296
296
297
297
296
296
295
294
294
295
296
298
298
299
300
301
302
304

Saturday 13

Waning Crescent 36%

01:43

13:13

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 OK
16 OK
17 OK
18 OK
19 OK
20 OK
21 OK
22 OK
23 OK

Sun - Rise: 08:34, Set: 16:35, Transit: 12:34. Moon - Rise: 01:43, Set: 13:13. Civil Dark: 17:14 - 07:55. Nautical Dark: 17:56 - 07:13. Astro Dark: 18:36 - 06:33

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
98
96
95
88
82
75
68
62
44
31
24
20
24
28
28
27
33

Low Clouds (% Sky Obscured)

38
48
59
75
75
72
74
79
83
88
79
69
60
53
46
39
31
24
20
24
28
28
27
33

Medium Clouds (% Sky Obscured)

91
88
45
98
97
90
100
93
87
80
77
78
16
49
8
1
1
1
0
0
0
0
0
0

High Clouds (% Sky Obscured)

100
100
100
100
99
98
97
80
61
41
27
11
0
0
0
0
0
0
0
0
0
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
4
10
15
16
17
20
30
20
13
11
30
19
2
0
1
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

91
90
90
90
88
85
85
84
82
82
82
82
87
91
91
87
90
91
91
93
91
93
93
94

Pressure (mb)

1022
1023
1023
1023
1023
1023
1023
1023
1024
1024
1025
1025
1026
1026
1026
1026
1026
1027
1027
1027
1027
1027
1027
1027

Ozone (du)

304
306
309
311
313
315
318
320
321
322
324
326
337
347
351
358
358
356
342
339
339
337
333
328

Sunday 14

Waning Crescent 27%

02:54

13:25

00 Bad
01 OK
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 Bad
23 Bad

Sun - Rise: 08:35, Set: 16:35, Transit: 12:35. Moon - Rise: 02:54, Set: 13:25. Civil Dark: 17:14 - 07:56. Nautical Dark: 17:56 - 07:14. Astro Dark: 18:36 - 06:34

Total Clouds (% Sky Obscured)

63
38
59
59
82
93
100
99
77
87
95
94
95
95
95
95
93
90
87
89
91
94
95
95

Low Clouds (% Sky Obscured)

29
32
33
36
38
39
41
54
63
71
64
61
51
60
69
77
80
82
83
83
84
85
89
92

Medium Clouds (% Sky Obscured)

0
8
12
16
16
27
22
71
12
29
48
47
59
57
55
53
46
38
35
49
64
80
83
91

High Clouds (% Sky Obscured)

10
4
8
9
39
69
100
83
65
48
56
64
72
53
35
16
15
14
12
21
29
41
30
18

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
1
2
1
6
7

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
9
9
10
10
11
11
12
12
12
13
13
14
13
13
13
13
13
14
14
15
15
14

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

93
93
93
91
91
93
91
88
80
78
71
63
57
55
55
56
57
60
62
67
65
65
65
65

Pressure (mb)

1027
1026
1026
1026
1025
1025
1025
1024
1024
1024
1024
1024
1023
1023
1022
1022
1022
1021
1021
1021
1020
1020
1020
1020

Ozone (du)

323
319
316
315
314
312
309
308
306
304
301
300
298
296
295
295
294
293
292
291
291
291
291
291

Monday 15

Waning Crescent 19%

04:05

13:38

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 OK
15 OK
16 Bad
17 Bad
18 Bad
19 Bad
20 Bad
21 Bad
22 Bad
23 Bad

Sun - Rise: 08:36, Set: 16:35, Transit: 12:35. Moon - Rise: 04:05, Set: 13:38. Civil Dark: 17:14 - 07:57. Nautical Dark: 17:56 - 07:14. Astro Dark: 18:36 - 06:34

Total Clouds (% Sky Obscured)

95
92
91
91
90
90
91
89
87
85
77
71
68
54
41
36
48
61
71
75
80
85
74
64

Low Clouds (% Sky Obscured)

95
92
91
91
90
90
91
89
87
85
77
71
68
54
41
36
48
30
14
7
3
1
0
0

Medium Clouds (% Sky Obscured)

95
92
91
91
90
90
84
86
87
85
77
71
68
53
41
27
29
32
32
51
70
85
74
64

High Clouds (% Sky Obscured)

17
16
26
35
50
55
55
55
55
55
55
45
40
42
26
24
29
26
23
12
8
4
10
14

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 (%)

5
13
16
22
18
15
8
9
9
2
4
1
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)

14
14
14
13
13
13
14
14
14
14
13
14
14
15
14
13
12
12
12
13
12
12
12
12

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

3
3
4
4
4
5
5
5
5
5
5
5
5
5
5
5
5
4
4
3
3
4
4
4

Relative Humidity (%)

65
65
70
73
75
77
78
79
79
78
78
75
73
72
71
69
68
68
69
69
70
73
74
75

Pressure (mb)

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

Ozone (du)

291
290
293
295
297
298
298
299
299
300
300
301
303
304
305
307
308
310
313
315
321
327
333
329

Tuesday 16

Waning Crescent 12%

05:16

13:55

Sun - Rise: 08:37, Set: 16:35, Transit: 12:36. Moon - Rise: 05:16, Set: 13:55. Civil Dark: 17:14 - 07:58. Nautical Dark: 17:57 - 07:15. Astro Dark: 18:37 - 06:35

Total Clouds (% Sky Obscured)

Low Clouds (% Sky Obscured)

Medium Clouds (% Sky Obscured)

High Clouds (% Sky Obscured)

ISS Passover

Visibility (miles)

Fog (%)

Precipitation Type

Precipitation Probability (%)

Precipitation Amount (mm)

Wind Speed/Direction (mph)

Chance of Frost

Temperature (°C)

Feels Like (°C)

Dew Point (°C)

Relative Humidity (%)

Pressure (mb)

Ozone (du)

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

Generated: 09/12/25 23:52:17. Forecast: 10/12/25 to 16/12/25. Timezone: UTC+1.00