Clear Outside v1.0 - International Weather Forecasts For Astronomers

Wednesday 22

Waxing Crescent 34%

09:43

02:44

02 Good
03 Good
04 Good
05 Good
06 Good
07 Good
08 Good
09 Good
10 Good
11 Good
12 Good
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

Sun - Rise: 06:32, Set: 20:49, Transit: 13:41. Moon - Rise: 09:43, Set: 02:44. Civil Dark: 21:25 - 05:56. Nautical Dark: 22:10 - 05:11. Astro Dark: 23:03 - 04:18

Total Clouds (% Sky Obscured)

2
2
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Low 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

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
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
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)

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

Chance of Frost

Temperature (°C)

8
7
7
6
5
5
6
7
10
12
13
14
15
16
16
16
16
16
15
13
11
11
10
9

Feels Like (°C)

6
5
5
4
3
3
3
5
7
8
9
11
12
12
13
13
13
14
13
12
10
9
8
7

Dew Point (°C)

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

Relative Humidity (%)

65
70
72
76
76
76
72
62
55
48
43
42
41
40
41
41
43
46
53
57
59
61
65
67

Pressure (mb)

1024
1024
1025
1024
1024
1025
1026
1026
1026
1026
1026
1026
1026
1026
1025
1025
1025
1025
1025
1026
1027
1027
1028
1028

Ozone (du)

412
409
405
400
394
393
394
395
399
404
408
411
411
406
403
399
396
393
391
389
386
389
390
393

Thursday 23

Waxing Crescent 46%

11:05

03:28

02 Good
03 Good
04 Good
05 Good
06 Good
07 Good
08 Good
09 Good
10 Good
11 Good
12 Good
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

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)

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

Low 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

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

Chance of Frost

Temperature (°C)

8
7
6
6
5
5
6
8
10
12
14
16
17
18
18
18
18
17
16
14
12
10
9
8

Feels Like (°C)

7
6
5
4
4
4
5
7
9
11
12
14
15
16
16
16
16
15
15
12
10
9
8
6

Dew Point (°C)

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

Relative Humidity (%)

70
73
74
76
78
79
74
64
57
52
45
37
33
31
31
33
38
45
53
54
58
62
67
68

Pressure (mb)

1028
1028
1029
1029
1029
1029
1030
1030
1030
1030
1030
1030
1029
1029
1028
1028
1027
1027
1027
1027
1028
1028
1028
1028

Ozone (du)

394
397
398
398
396
393
389
383
377
375
374
372
371
371
369
369
371
372
371
372
373
372
371
369

Friday 24

First Quarter 58%

12:30

03:59

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

Sun - Rise: 06:28, Set: 20:52, Transit: 13:40. Moon - Rise: 12:30, Set: 03:59. Civil Dark: 21:29 - 05:52. Nautical Dark: 22:15 - 05:06. Astro Dark: 23:08 - 04:12

Total Clouds (% Sky Obscured)

0
0
49
77
89
90
87
75
49
41
32
11
2
1
0
2
2
2
1
2
2
13
26
37

Low Clouds (% Sky Obscured)

0
0
49
72
89
90
87
75
49
41
32
11
0
0
0
0
0
0
0
0
0
13
26
37

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
1
1
1
1
2
0
0
0
0
0
0
0
0
0
1
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
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
6
5
4
5
5
5
6
7
7
8
9
10
10
11
10
10
10
8
7
6
6
6

Chance of Frost

Temperature (°C)

7
6
6
5
5
4
5
5
6
8
10
12
14
16
16
17
17
16
14
12
11
9
8
8

Feels Like (°C)

6
5
5
4
4
4
4
4
5
7
8
10
12
13
13
14
14
13
12
10
9
7
7
6

Dew Point (°C)

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

Relative Humidity (%)

67
69
71
72
73
73
67
57
49
43
38
35
34
34
34
36
41
48
56
62
66
66
65
65

Pressure (mb)

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

Ozone (du)

368
366
366
367
368
367
367
368
370
372
374
377
378
380
384
378
374
371
370
368
368
367
366
367

Saturday 25

Waxing Gibbous 68%

13:53

04:20

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

Sun - Rise: 06:26, Set: 20:54, Transit: 13:40. Moon - Rise: 13:53, Set: 04:20. Civil Dark: 21:30 - 05:50. Nautical Dark: 22:17 - 05:03. Astro Dark: 23:11 - 04:09

Total Clouds (% Sky Obscured)

48
52
54
61
73
70
54
41
24
16
9
0
0
0
1
2
2
6
12
23
32
8
9
12

Low Clouds (% Sky Obscured)

48
52
54
61
73
70
54
41
24
16
9
0
0
0
0
0
0
0
0
0
0
3
6
9

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

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

Chance of Frost

Temperature (°C)

7
6
6
6
5
5
5
7
9
10
12
14
15
16
16
16
16
14
13
10
9
9
8
8

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

69
70
72
75
78
78
72
64
55
46
40
36
34
33
33
35
40
46
56
62
70
73
75
77

Pressure (mb)

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

Ozone (du)

368
369
369
370
372
374
381
378
375
373
370
366
365
365
365
363
361
359
359
358
360
362
363
363

Sunday 26

Waxing Gibbous 78%

15:13

04:36

02 OK
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 OK
23 Bad
00 Bad
01 Bad

Sun - Rise: 06:24, Set: 20:56, Transit: 13:40. Moon - Rise: 15:13, Set: 04:36. Civil Dark: 21:32 - 05:47. Nautical Dark: 22:19 - 05:01. Astro Dark: 23:14 - 04:06

Total Clouds (% Sky Obscured)

19
67
69
67
63
64
74
87
100
100
100
100
100
100
100
96
91
86
75
58
45
55
66
73

Low Clouds (% Sky Obscured)

14
21
27
26
24
23
23
23
23
16
8
0
0
0
0
0
0
0
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

0
0
0
1
2
3
16
32
50
54
45
68
67
64
61
61
53
53
37
21
7
0
5
5

High Clouds (% Sky Obscured)

2
2
3
5
8
11
41
72
100
100
100
100
100
100
100
85
70
55
57
58
45
55
66
73

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

Chance of Frost

Temperature (°C)

7
7
6
5
5
5
6
7
9
10
11
12
13
14
14
15
14
13
13
11
10
8
8
7

Feels Like (°C)

5
5
3
2
2
2
3
4
5
6
8
8
9
10
10
10
10
11
10
9
9
9
8
8

Dew Point (°C)

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

Relative Humidity (%)

81
85
88
91
90
90
82
74
64
58
51
46
42
41
41
39
44
50
56
57
60
64
69
74

Pressure (mb)

1025
1025
1025
1026
1026
1026
1027
1027
1027
1027
1027
1027
1026
1026
1026
1025
1025
1025
1025
1026
1026
1026
1026
1026

Ozone (du)

362
360
359
359
361
362
363
362
362
364
366
367
368
369
370
372
372
373
374
375
376
377
377
377

Monday 27

Waxing Gibbous 86%

16:29

04:49

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

Sun - Rise: 06:22, Set: 20:57, Transit: 13:40. Moon - Rise: 16:29, Set: 04:49. Civil Dark: 21:34 - 05:45. Nautical Dark: 22:21 - 04:58. Astro Dark: 23:17 - 04:02

Total Clouds (% Sky Obscured)

76
75
81
74
70
66
59
41
20
32
37
39
28
17
5
12
19
27
20
12
5
19
32
46

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
5
9
16
13
8
1
0
0
0

Medium Clouds (% Sky Obscured)

8
3
5
5
5
5
4
3
2
3
7
7
4
2
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

76
75
81
64
60
60
59
41
20
10
3
1
0
0
0
0
0
0
0
1
1
19
32
46

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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

8
4
4
4
4
4
3
3
4
5
5
6
7
13
13
13
13
13
13
11
11
10
10
10

Dew Point (°C)

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

Relative Humidity (%)

79
81
82
83
82
80
79
73
66
59
54
48
43
42
41
41
46
51
55
56
56
56
57
57

Pressure (mb)

1026
1026
1026
1026
1027
1027
1027
1027
1027
1027
1027
1026
1026
1026
1025
1025
1025
1025
1025
1025
1025
1026
1026
1026

Ozone (du)

376
376
375
375
375
374
374
375
377
378
380
382
384
385
385
385
386
386
387
389
390
392
393
394

Tuesday 28

Waxing Gibbous 92%

17:43

05:01

Sun - Rise: 06:20, Set: 20:59, Transit: 13:40. Moon - Rise: 17:43, Set: 05:01. Civil Dark: 21:36 - 05:43. Nautical Dark: 22:23 - 04:56. Astro Dark: 23:20 - 03:59

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: 22/04/26 02:46:05. Forecast: 22/04/26 to 28/04/26. Timezone: UTC+2.00