Clear Outside v1.0 - International Weather Forecasts For Astronomers

Friday 17

New Moon 0%

06:19

21:13

03 OK
04 OK
05 Bad
06 Bad
07 Bad
08 Bad
09 OK
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 OK
23 Bad
00 Bad
01 Bad
02 Bad

Sun - Rise: 06:42, Set: 20:41, Transit: 13:42. Moon - Rise: 06:19, Set: 21:13. Civil Dark: 21:16 - 06:07. Nautical Dark: 22:00 - 05:23. Astro Dark: 22:49 - 04:34

Total Clouds (% Sky Obscured)

34
47
57
69
83
49
45
60
75
95
95
100
95
92
92
81
87
60
25
38
50
84
79
92

Low Clouds (% Sky Obscured)

6
8
11
39
19
1
1
4
27
51
22
40
10
0
0
0
9
22
0
0
4
8
0
44

Medium Clouds (% Sky Obscured)

29
47
57
69
66
34
26
32
29
60
67
65
44
63
60
44
40
27
12
15
16
35
34
33

High Clouds (% Sky Obscured)

34
47
57
23
15
1
3
11
36
39
43
60
75
36
20
12
7
1
1
6
13
4
2
2

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
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
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
3
3
7
10
20
19
19
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

6
6
5
6
7
8
12
14
15
15
17
18
17
17
17
16
17
18
16
15
12
12
11
11

Dew Point (°C)

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

Relative Humidity (%)

82
84
82
81
76
73
65
59
57
52
50
48
48
50
54
53
62
70
75
78
76
76
76
75

Pressure (mb)

1023
1022
1022
1021
1022
1022
1022
1022
1022
1022
1022
1021
1021
1021
1021
1021
1021
1021
1021
1022
1022
1022
1022
1022

Ozone (du)

363
364
364
363
365
364
362
361
361
360
359
358
358
357
356
357
357
357
357
358
358
358
358
358

Saturday 18

Waxing Crescent 2%

06:38

22:46

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 OK
22 Good
23 Good
00 Good
01 Good
02 OK

Sun - Rise: 06:40, Set: 20:43, Transit: 13:41. Moon - Rise: 06:38, Set: 22:46. Civil Dark: 21:18 - 06:05. Nautical Dark: 22:02 - 05:21. Astro Dark: 22:52 - 04:31

Total Clouds (% Sky Obscured)

95
99
99
98
93
97
94
95
98
100
99
95
89
98
100
100
100
100
24
8
1
10
15
27

Low Clouds (% Sky Obscured)

55
60
40
50
41
59
51
59
49
61
60
85
84
76
72
77
68
56
13
0
0
0
0
18

Medium Clouds (% Sky Obscured)

33
42
37
40
45
88
94
77
89
89
99
91
89
98
100
99
72
66
0
0
0
0
2
27

High Clouds (% Sky Obscured)

8
26
80
60
10
5
6
2
7
95
82
23
22
47
71
100
98
99
12
7
1
5
5
5

ISS Passover

Visibility (miles)

9
9
9
9
9
8
9
9
9
9
9
9
9
9
9
8
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
Very Light Rain
Very Light Rain
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

0
0
2
17
25
20
11
30
39
65
57
27
14
13
20
19
6
4
2
1
0
0
0
0

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

2
2
2
2
2
3
2
3
4
4
6
8
9
9
9
11
9
8
7
6
5
5
5
4

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

11
11
11
11
11
11
12
13
14
15
13
12
13
14
13
11
11
11
9
7
7
7
5
4

Dew Point (°C)

7
8
8
8
9
9
10
10
10
12
10
9
8
9
9
10
9
8
5
4
4
4
4
3

Relative Humidity (%)

76
77
80
80
83
86
83
76
75
78
74
68
60
62
64
76
76
70
63
64
68
73
75
75

Pressure (mb)

1021
1021
1021
1021
1021
1022
1022
1022
1022
1022
1022
1022
1022
1022
1022
1022
1022
1022
1023
1023
1023
1023
1023
1023

Ozone (du)

357
356
356
356
355
355
358
362
364
366
366
367
368
366
367
368
370
371
369
370
372
373
375
376

Sunday 19

Waxing Crescent 6%

07:03

00:18

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

Sun - Rise: 06:38, Set: 20:44, Transit: 13:41. Moon - Rise: 07:03, Set: 00:18. Civil Dark: 21:20 - 06:03. Nautical Dark: 22:04 - 05:18. Astro Dark: 22:55 - 04:28

Total Clouds (% Sky Obscured)

35
54
55
64
77
79
69
86
81
58
91
85
93
89
71
78
58
46
50
56
58
65
65
65

Low Clouds (% Sky Obscured)

0
25
39
40
62
63
53
67
52
56
83
82
80
88
71
71
48
43
49
56
58
65
65
62

Medium Clouds (% Sky Obscured)

35
25
20
32
20
25
14
25
30
21
16
0
14
0
0
0
0
0
0
0
0
0
0
1

High Clouds (% Sky Obscured)

5
5
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
1
0
1
3
17
23
28
31
24
22
20
22
19
8
2
13
1
3
4
4
5

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
3
3
3
3
2
2
2
4
7
7
8
9
8
7
9
8
7
8
7
7
8
7
7

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

76
78
80
80
78
75
73
71
65
50
43
41
47
51
46
46
53
57
65
72
75
81
87
87

Pressure (mb)

1023
1023
1023
1023
1023
1023
1023
1024
1024
1024
1023
1023
1023
1023
1023
1023
1023
1023
1024
1024
1024
1024
1024
1024

Ozone (du)

379
380
385
394
403
406
407
407
408
410
410
409
409
410
411
412
413
412
412
411
412
413
413
413

Monday 20

Waxing Crescent 14%

07:40

01:39

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

Sun - Rise: 06:36, Set: 20:46, Transit: 13:41. Moon - Rise: 07:40, Set: 01:39. Civil Dark: 21:21 - 06:00. Nautical Dark: 22:06 - 05:16. Astro Dark: 22:57 - 04:25

Total Clouds (% Sky Obscured)

55
47
57
67
67
62
60
56
59
79
89
82
74
66
52
39
30
35
48
63
62
41
48
51

Low Clouds (% Sky Obscured)

55
47
57
67
67
62
60
56
57
58
62
50
43
45
37
28
15
27
47
60
57
39
47
49

Medium Clouds (% Sky Obscured)

3
4
4
4
4
4
5
4
15
28
33
28
23
18
14
7
0
0
0
0
5
9
14
18

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

Precipitation Probability (%)

6
5
3
1
0
0
0
0
7
31
31
25
33
40
48
45
27
2
0
0
0
0
0
0

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

7
7
8
8
8
8
9
9
9
8
8
9
9
9
9
10
10
9
7
5
5
4
4
4

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

87
85
86
88
86
82
74
65
59
53
51
53
50
51
54
60
73
76
79
78
76
81
83
85

Pressure (mb)

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

Ozone (du)

414
416
418
419
418
418
415
412
410
407
406
406
407
408
408
409
409
411
416
421
422
423
424
424

Tuesday 21

Waxing Crescent 23%

08:33

02:44

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 OK
22 Good
23 OK
00 OK
01 Bad
02 Bad

Sun - Rise: 06:34, Set: 20:48, Transit: 13:41. Moon - Rise: 08:33, Set: 02:44. Civil Dark: 21:23 - 05:58. Nautical Dark: 22:08 - 05:13. Astro Dark: 23:00 - 04:22

Total Clouds (% Sky Obscured)

52
57
61
67
67
73
75
77
70
80
88
89
89
90
76
64
44
38
24
16
27
40
53
52

Low Clouds (% Sky Obscured)

52
56
57
57
58
54
50
46
48
59
69
74
79
85
62
40
18
19
21
16
15
8
2
1

Medium Clouds (% Sky Obscured)

18
20
21
19
17
29
44
60
58
44
42
39
32
23
26
19
22
10
3
0
0
0
0
1

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
23
40
53
52

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
8
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 (%)

1
0
1
2
1
8
12
15
39
38
33
51
52
49
46
43
39
32
24
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)

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

Chance of Frost

Temperature (°C)

5
5
4
4
4
5
7
9
10
11
12
13
13
13
13
12
12
11
10
9
8
8
7
7

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

85
86
86
86
86
85
79
70
63
58
54
50
50
50
50
53
54
56
61
64
70
68
66
64

Pressure (mb)

1021
1021
1021
1021
1021
1021
1021
1021
1021
1020
1020
1020
1020
1020
1020
1020
1020
1020
1021
1021
1021
1021
1022
1022

Ozone (du)

424
424
423
421
420
419
417
416
414
411
410
409
409
410
410
408
406
404
404
405
405
403
402
400

Wednesday 22

Waxing Crescent 34%

09:43

No Set

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

Sun - Rise: 06:32, Set: 20:49, Transit: 13:41. Moon - Rise: 09:43, Set: No Set. Civil Dark: 21:25 - 05:56. Nautical Dark: 22:10 - 05:11. Astro Dark: 23:03 - 04:18

Total Clouds (% Sky Obscured)

47
49
46
47
47
41
50
65
39
21
7
18
29
43
37
29
23
16
7
0
22
40
60
56

Low Clouds (% Sky Obscured)

1
0
0
0
0
12
25
34
18
8
4
5
7
11
10
9
11
9
6
0
0
0
0
0

Medium Clouds (% Sky Obscured)

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

High Clouds (% Sky Obscured)

47
43
36
19
20
20
25
45
39
21
5
5
4
3
2
1
0
0
0
0
22
40
60
56

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
1
1
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
6
7
6
6
6
7
9
10
10
10
10
11
11
11
11
10
9
8
7
6
6
6
7

Chance of Frost

Temperature (°C)

6
6
5
5
6
6
8
10
11
13
14
15
15
15
16
15
14
13
12
11
10
9
9
8

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

67
71
75
75
74
74
66
59
51
48
45
42
39
37
34
38
43
48
51
54
58
62
68
73

Pressure (mb)

1022
1022
1022
1022
1022
1023
1023
1023
1023
1023
1022
1022
1022
1021
1021
1021
1021
1021
1021
1022
1022
1022
1023
1023

Ozone (du)

400
400
400
396
392
388
390
391
393
392
391
390
390
390
391
393
395
396
398
399
400
401
402
403

Thursday 23

Waxing Crescent 46%

11:05

03:28

Sun - Rise: 06:30, Set: 20:51, Transit: 13:40. Moon - Rise: 11:05, Set: 03:28. Civil Dark: 21:27 - 05:54. Nautical Dark: 22:12 - 05:08. Astro Dark: 23:05 - 04:15

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: 17/04/26 03:59:00. Forecast: 17/04/26 to 23/04/26. Timezone: UTC+2.00