Clear Outside v1.0 - International Weather Forecasts For Astronomers

Thursday 9

Waning Gibbous 60%

03:46

10:39

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

Sun - Rise: 06:59, Set: 20:28, Transit: 13:44. Moon - Rise: 03:46, Set: 10:39. Civil Dark: 21:02 - 06:25. Nautical Dark: 21:44 - 05:43. Astro Dark: 22:30 - 04:57

Total Clouds (% Sky Obscured)

51
40
55
15
5
7
21
11
1
11
33
38
68
85
84
100
100
100
100
77
86
86
100
82

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
57
51
25
52
78
82
38

Medium Clouds (% Sky Obscured)

1
21
19
7
3
1
2
0
0
8
28
28
68
67
82
90
94
63
88
77
86
43
21
45

High Clouds (% Sky Obscured)

25
33
12
4
4
6
13
11
1
11
10
3
9
17
30
100
100
100
100
30
23
17
100
65

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
Light Rain
Light Rain
None
None
None
None
None

Precipitation Probability (%)

1
1
0
0
0
0
0
0
0
0
0
0
0
1
5
19
64
95
67
29
9
1
14
0

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0.4
0
0
0
0
0

Wind Speed/Direction (mph)

2
2
1
5
5
5
6
7
7
8
8
9
9
9
10
9
8
7
11
10
12
13
12
12

Chance of Frost

Temperature (°C)

10
9
9
10
10
10
13
16
18
20
21
22
23
23
23
23
22
21
19
17
16
14
12
11

Feels Like (°C)

8
8
7
8
9
9
12
13
16
17
19
20
21
21
21
21
20
19
17
15
13
10
9
8

Dew Point (°C)

6
7
7
7
7
7
7
8
9
10
10
11
12
13
13
15
15
16
16
14
13
11
10
9

Relative Humidity (%)

78
85
85
84
84
78
66
58
54
51
49
48
49
50
53
60
64
74
85
83
82
82
83
83

Pressure (mb)

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

Ozone (du)

363
364
367
369
368
366
363
363
364
366
365
364
363
362
361
360
360
358
363
366
372
374
375
376

Friday 10

Third Quarter 50%

04:21

11:47

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
00 Bad
01 Bad
02 Bad

Sun - Rise: 06:57, Set: 20:30, Transit: 13:43. Moon - Rise: 04:21, Set: 11:47. Civil Dark: 21:04 - 06:23. Nautical Dark: 21:46 - 05:41. Astro Dark: 22:32 - 04:55

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
94
100
100
91
98
97
97
100
100
100
100
100
96
100

Low Clouds (% Sky Obscured)

11
0
10
7
0
0
14
30
26
30
34
31
28
35
35
36
5
0
0
0
0
0
0
4

Medium Clouds (% Sky Obscured)

86
38
40
75
49
43
74
95
96
91
94
100
97
77
81
95
96
98
100
100
51
77
92
99

High Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
73
100
100
34
84
72
69
100
100
100
100
100
76
62

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
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)

11
10
9
7
6
6
6
6
6
5
4
3
4
4
2
2
2
3
4
5
6
7
7
6

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

6
5
4
4
3
4
5
5
6
7
8
10
10
10
10
11
10
10
8
8
6
6
5
5

Dew Point (°C)

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

Relative Humidity (%)

84
82
78
78
78
76
69
64
60
56
52
51
48
47
47
47
51
56
54
56
57
58
60
62

Pressure (mb)

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

Ozone (du)

377
375
373
369
369
368
366
366
365
363
362
360
357
356
354
354
353
352
352
351
351
351
351
351

Saturday 11

Waning Crescent 40%

04:48

13:02

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
00 Bad
01 Bad
02 Bad

Sun - Rise: 06:55, Set: 20:31, Transit: 13:43. Moon - Rise: 04:48, Set: 13:02. Civil Dark: 21:06 - 06:20. Nautical Dark: 21:48 - 05:38. Astro Dark: 22:34 - 04:52

Total Clouds (% Sky Obscured)

100
86
100
100
87
98
99
97
100
100
100
100
100
100
100
100
100
100
99
99
99
99
100
100

Low Clouds (% Sky Obscured)

3
1
0
0
0
0
0
0
0
7
26
65
70
83
76
89
86
85
68
67
60
54
39
26

Medium Clouds (% Sky Obscured)

73
86
97
94
87
98
83
38
61
88
100
100
100
90
99
100
100
100
99
93
99
99
87
23

High Clouds (% Sky Obscured)

100
50
100
100
8
9
99
86
100
100
100
100
99
89
100
100
10
10
10
10
34
72
100
100

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
4
5
9
4
5
9
3
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
Light Rain
None
Very Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
None
None
None
None
None
None
None

Precipitation Probability (%)

9
0
0
0
0
0
0
1
42
82
55
67
95
95
95
95
86
50
41
39
36
28
15
17

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0.5
0
0.3
0.9
0.6
1.2
0.7
0.5
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

6
7
9
9
10
11
11
13
13
16
16
15
13
13
15
14
14
12
12
11
10
8
8
9

Chance of Frost

Temperature (°C)

9
9
9
9
9
9
10
12
14
17
18
19
17
16
14
13
11
9
9
8
8
7
7
7

Feels Like (°C)

6
5
5
5
4
5
6
7
10
12
14
15
14
13
10
8
7
5
5
4
4
4
3
3

Dew Point (°C)

2
2
2
1
2
3
4
5
6
9
15
16
15
14
12
11
9
7
6
5
4
4
4
4

Relative Humidity (%)

62
64
61
60
61
63
63
61
58
61
80
85
88
89
89
90
86
85
81
79
79
81
81
82

Pressure (mb)

1014
1013
1012
1011
1010
1010
1009
1008
1007
1007
1006
1006
1007
1007
1007
1008
1009
1010
1011
1012
1012
1013
1013
1013

Ozone (du)

351
350
352
352
352
352
352
351
351
351
353
351
350
352
355
357
360
360
358
357
355
354
353
357

Sunday 12

Waning Crescent 30%

05:08

14:19

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
00 Bad
01 Bad
02 Bad

Sun - Rise: 06:53, Set: 20:33, Transit: 13:43. Moon - Rise: 05:08, Set: 14:19. Civil Dark: 21:07 - 06:18. Nautical Dark: 21:50 - 05:36. Astro Dark: 22:37 - 04:49

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
95
90
86
80

Low Clouds (% Sky Obscured)

15
0
0
0
0
12
24
37
39
39
40
40
35
33
26
26
26
17
8
2
10
17
25
18

Medium Clouds (% Sky Obscured)

84
80
91
57
79
54
81
58
51
37
33
51
61
100
99
92
63
57
56
55
56
49
30
29

High Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
68
37
5
5

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
7
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 (%)

11
4
3
0
0
0
0
0
0
0
2
1
3
20
29
18
2
0
0
0
0
0
0
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

84
79
78
78
76
78
75
70
63
57
53
48
48
52
52
58
62
67
72
73
78
79
84
85

Pressure (mb)

1014
1014
1014
1014
1014
1014
1015
1015
1015
1015
1015
1015
1014
1014
1014
1014
1014
1014
1015
1015
1015
1015
1015
1015

Ozone (du)

362
365
368
368
370
372
373
372
371
370
373
375
374
376
379
384
389
391
393
395
397
398
397
397

Monday 13

Waning Crescent 21%

05:24

15:38

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
00 OK
01 OK
02 OK

Sun - Rise: 06:51, Set: 20:35, Transit: 13:43. Moon - Rise: 05:24, Set: 15:38. Civil Dark: 21:09 - 06:16. Nautical Dark: 21:52 - 05:33. Astro Dark: 22:39 - 04:46

Total Clouds (% Sky Obscured)

74
65
71
77
88
87
86
86
91
96
100
98
96
95
93
92
90
75
62
48
37
30
27
35

Low Clouds (% Sky Obscured)

12
3
16
31
44
46
46
47
54
59
60
56
52
49
45
48
47
37
29
19
22
24
25
33

Medium Clouds (% Sky Obscured)

22
19
36
28
29
29
29
29
43
47
77
79
79
76
75
74
81
70
62
48
37
21
0
0

High Clouds (% Sky Obscured)

0
0
0
0
0
0
5
5
5
5
5
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
8
8
7
6
6
7
7
8
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
Very Light Rain
Light Rain
Light Rain
Light Rain
None
Very Light Rain
Very Light Rain
Very Light Rain
None
None
None
None
None
None
None

Precipitation Probability (%)

0
0
0
3
5
8
12
14
38
59
73
95
84
57
61
62
58
51
41
32
22
16
2
1

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0.3
0.4
0.9
0.6
0
0.2
0.3
0.2
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

4
3
3
3
2
3
4
6
7
9
9
9
9
9
9
10
10
10
7
7
7
7
6
6

Dew Point (°C)

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

Relative Humidity (%)

85
86
85
88
88
88
82
77
68
60
55
52
52
52
51
56
64
71
76
81
87
87
87
86

Pressure (mb)

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

Ozone (du)

399
404
413
422
431
434
437
438
439
439
441
444
447
450
454
454
455
455
456
457
458
458
457
456

Tuesday 14

Waning Crescent 12%

05:38

16:57

03 OK
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 OK
22 Good
23 Good
00 Good
01 Good
02 Good

Sun - Rise: 06:48, Set: 20:36, Transit: 13:42. Moon - Rise: 05:38, Set: 16:57. Civil Dark: 21:11 - 06:14. Nautical Dark: 21:54 - 05:31. Astro Dark: 22:42 - 04:43

Total Clouds (% Sky Obscured)

40
51
52
57
62
68
83
97
94
91
89
81
73
64
52
43
37
27
15
6
4
3
2
2

Low Clouds (% Sky Obscured)

40
47
52
56
62
68
82
91
84
84
88
81
73
64
52
37
25
20
14
6
4
2
0
0

Medium Clouds (% Sky Obscured)

0
0
6
12
19
36
53
70
62
53
46
42
37
33
23
13
3
1
1
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
7
5
3
4
4
4
6
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
None
None
None
Very Light Rain
Very Light Rain
Very Light Rain
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

1
0
0
0
0
5
9
12
30
41
50
54
54
53
45
41
36
33
25
0
1
0
0
0

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0.2
0.2
0.2
0.2
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

6
6
5
5
6
6
7
8
9
9
9
9
11
12
13
13
11
10
9
9
8
7
7
6

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

86
88
88
86
86
83
81
78
76
80
84
87
81
75
70
76
83
90
90
91
93
94
94
94

Pressure (mb)

1019
1020
1020
1020
1020
1020
1020
1021
1021
1021
1021
1020
1020
1020
1020
1020
1020
1021
1021
1022
1022
1022
1023
1023

Ozone (du)

451
445
439
436
432
429
426
424
421
418
416
413
407
401
396
390
385
379
376
373
369
369
368
367

Wednesday 15

Waning Crescent 6%

05:51

18:19

Sun - Rise: 06:46, Set: 20:38, Transit: 13:42. Moon - Rise: 05:51, Set: 18:19. Civil Dark: 21:13 - 06:11. Nautical Dark: 21:56 - 05:28. Astro Dark: 22:44 - 04:40

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 Brussels, Bruxelles-Capitale, Kingdom of Belgium (50.85,4.35)

Generated: 09/04/26 03:02:44. Forecast: 09/04/26 to 15/04/26. Timezone: UTC+2.00