Clear Outside v1.0 - International Weather Forecasts For Astronomers

Monday 25

Waxing Gibbous 74%

15:33

03:09

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: 05:40, Set: 21:39, Transit: 13:39. Moon - Rise: 15:33, Set: 03:09. Civil Dark: 22:21 - 04:57. Nautical Dark: 23:22 - 03:56. Astro Dark: 01:24 - N/A

Total Clouds (% Sky Obscured)

7
8
6
2
3
2
2
2
1
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)

1
1
0
1
1
1
1
1
1
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)

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

Chance of Frost

Temperature (°C)

19
18
17
16
15
16
18
20
22
24
26
27
28
29
30
29
29
28
27
24
22
20
19
18

Feels Like (°C)

20
19
18
17
16
16
19
21
23
25
26
28
29
30
30
30
30
30
29
26
23
21
19
19

Dew Point (°C)

14
13
12
10
10
11
12
13
13
13
13
13
14
14
15
15
16
16
17
17
16
13
12
12

Relative Humidity (%)

75
73
71
70
72
74
71
63
55
49
45
42
40
39
40
41
45
48
55
62
66
63
62
66

Pressure (mb)

1031
1031
1031
1031
1031
1031
1032
1032
1032
1032
1032
1032
1031
1031
1031
1030
1030
1030
1030
1030
1030
1031
1031
1030

Ozone (du)

313
313
313
312
312
310
310
309
309
310
310
310
309
308
309
309
310
310
310
310
310
310
311
312

Tuesday 26

Waxing Gibbous 82%

16:46

03:21

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 OK
16 OK
17 OK
18 OK
19 Good
20 Good
21 Good
22 Good
23 Good
00 Good
01 Good

Sun - Rise: 05:39, Set: 21:40, Transit: 13:39. Moon - Rise: 16:46, Set: 03:21. Civil Dark: 22:23 - 04:55. Nautical Dark: 23:24 - 03:54. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

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

Chance of Frost

Temperature (°C)

18
17
16
16
16
16
18
21
23
25
27
29
30
31
31
31
31
30
29
27
24
22
21
20

Feels Like (°C)

18
18
17
17
16
15
18
23
25
28
30
32
33
33
34
34
34
33
32
30
27
25
23
21

Dew Point (°C)

11
11
11
10
10
10
11
13
13
14
15
16
16
16
16
17
17
19
20
19
18
17
16
15

Relative Humidity (%)

66
67
68
68
68
68
64
57
51
48
47
44
42
40
41
41
43
50
57
63
68
71
70
74

Pressure (mb)

1030
1030
1029
1029
1029
1029
1029
1029
1029
1028
1028
1027
1027
1026
1026
1025
1025
1024
1024
1024
1025
1025
1025
1025

Ozone (du)

313
313
313
313
312
314
314
314
314
314
314
314
313
314
314
313
312
312
313
315
318
320
321
322

Wednesday 27

Waxing Gibbous 89%

17:59

03:33

02 Good
03 Good
04 Good
05 Bad
06 Bad
07 Bad
08 Bad
09 Bad
10 OK
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: 05:38, Set: 21:41, Transit: 13:39. Moon - Rise: 17:59, Set: 03:33. Civil Dark: 22:24 - 04:54. Nautical Dark: 23:26 - 03:53. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

1
0
13
67
77
64
69
66
33
2
2
6
6
5
3
0
2
7
8
7
6
4
1
0

Low Clouds (% Sky Obscured)

0
0
12
39
53
37
42
43
11
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

0
0
0
32
36
33
32
33
21
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
6
6
5
3
0
2
7
8
7
5
4
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)

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

Chance of Frost

Temperature (°C)

18
17
16
16
15
15
16
17
18
19
21
22
23
24
24
24
23
23
22
20
18
17
16
15

Feels Like (°C)

20
19
18
17
16
16
16
17
19
19
21
22
23
24
24
24
24
23
21
20
17
15
15
13

Dew Point (°C)

13
13
13
13
13
13
12
11
12
12
13
13
13
14
14
14
14
14
13
13
11
9
8
7

Relative Humidity (%)

72
73
79
85
87
86
77
69
66
63
60
54
52
52
52
53
55
57
58
64
60
59
58
59

Pressure (mb)

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

Ozone (du)

323
323
322
322
322
323
322
322
322
323
323
323
324
324
324
324
324
324
325
326
327
329
331
331

Thursday 28

Waxing Gibbous 94%

19:12

03:47

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

Sun - Rise: 05:37, Set: 21:42, Transit: 13:39. Moon - Rise: 19:12, Set: 03:47. Civil Dark: 22:26 - 04:53. Nautical Dark: 23:28 - 03:51. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

2
4
6
4
2
0
2
0
0
5
28
29
52
63
97
81
75
74
78
81
86
58
76
56

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
2
3
4
9
12
14
25
32
39
44
45
45

High Clouds (% Sky Obscured)

2
4
6
4
2
0
0
0
0
2
4
6
37
63
97
81
62
45
53
60
68
58
76
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
0
0
0
0
0
0
0
0
0
0
1
2
1
1
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
8
8
8
9
9
8
8
8
7
7
6
6
6
5
5
5
5
6
6
6

Chance of Frost

Temperature (°C)

14
13
12
11
11
12
12
14
16
18
20
22
23
24
24
25
24
24
23
21
19
18
17
16

Feels Like (°C)

13
12
11
10
11
11
11
13
15
17
19
19
21
21
23
23
24
23
22
19
18
16
16
14

Dew Point (°C)

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

Relative Humidity (%)

62
66
70
71
75
73
64
55
48
43
40
38
37
37
36
37
39
46
51
56
58
58
58
59

Pressure (mb)

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

Ozone (du)

331
331
332
332
334
336
338
336
336
336
336
336
337
338
337
337
336
337
337
337
337
336
334
335

Friday 29

Waxing Gibbous 98%

20:25

04:03

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
00 Bad
01 Bad

Sun - Rise: 05:36, Set: 21:43, Transit: 13:40. Moon - Rise: 20:25, Set: 04:03. Civil Dark: 22:27 - 04:52. Nautical Dark: 23:30 - 03:49. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

56
81
62
72
75
74
78
79
81
85
75
91
83
75
68
75
84
91
92
90
91
94
95
95

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
6
13
19
21
26
30
24
20
15
10
5
0

Medium Clouds (% Sky Obscured)

44
34
29
27
22
16
24
34
43
38
24
18
14
9
5
8
9
10
12
12
11
8
14
17

High Clouds (% Sky Obscured)

56
81
62
72
75
74
78
79
81
85
75
89
78
66
55
70
84
91
92
90
91
93
86
79

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
Very Light Rain
Light Rain
None
None
None
None
None
None

Precipitation Probability (%)

0
0
0
0
0
0
0
0
0
1
0
0
25
32
38
38
46
41
31
15
0
0
2
4

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.3
0.4
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

15
15
15
15
15
16
18
20
22
24
25
27
28
28
28
28
28
27
26
25
23
22
21
21

Feels Like (°C)

15
15
14
16
15
16
18
21
23
25
26
28
28
28
29
28
29
28
29
27
26
27
26
25

Dew Point (°C)

8
8
8
7
7
8
9
10
10
11
12
13
15
15
16
16
17
17
18
18
17
17
17
17

Relative Humidity (%)

61
61
60
59
59
59
55
50
47
43
42
43
45
45
46
47
51
56
60
66
70
75
77
80

Pressure (mb)

1021
1021
1021
1020
1021
1021
1021
1021
1021
1021
1020
1020
1019
1019
1019
1019
1019
1019
1019
1019
1018
1018
1018
1017

Ozone (du)

335
335
334
334
338
338
337
336
335
334
334
335
336
337
337
338
337
337
336
336
336
336
336
337

Saturday 30

Waxing Gibbous 100%

21:36

04:25

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
00 Bad
01 Bad

Sun - Rise: 05:35, Set: 21:45, Transit: 13:40. Moon - Rise: 21:36, Set: 04:25. Civil Dark: 22:28 - 04:51. Nautical Dark: 23:32 - 03:48. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

97
98
100
100
100
100
100
100
100
91
84
78
85
92
99
99
100
100
100
99
99
93
88
82

Low Clouds (% Sky Obscured)

8
16
23
23
21
20
13
7
0
0
0
0
2
5
11
7
4
0
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

27
30
39
57
75
92
91
89
87
73
58
43
43
44
44
54
63
72
55
37
18
23
27
30

High Clouds (% Sky Obscured)

86
93
100
99
96
95
96
98
100
75
40
5
33
67
99
99
100
100
100
99
99
91
81
72

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
8

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

Precipitation Probability (%)

50
69
84
78
69
50
20
12
11
11
12
8
22
22
16
55
81
88
73
30
8
13
12
18

Precipitation Amount (mm)

0
0
0.3
0.4
0.4
0.2
0
0
0
0
0
0
0
0
0
0
0.6
0.8
0.6
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

20
20
19
19
19
20
20
22
23
25
26
28
29
29
29
29
28
26
25
24
22
20
19
18

Feels Like (°C)

25
20
20
20
20
19
19
22
22
23
24
25
25
31
30
29
29
29
28
24
24
23
22
21

Dew Point (°C)

17
17
17
17
17
17
17
17
17
17
17
17
17
17
17
17
18
18
18
18
17
16
15
14

Relative Humidity (%)

84
84
86
88
85
82
79
73
67
63
57
52
48
49
49
50
55
60
65
69
73
76
77
79

Pressure (mb)

1017
1017
1017
1017
1017
1016
1016
1016
1015
1015
1014
1014
1013
1013
1012
1012
1011
1011
1011
1011
1011
1012
1012
1012

Ozone (du)

337
337
337
337
337
336
335
335
336
337
336
336
336
337
339
341
341
341
342
345
349
353
353
353

Sunday 31

Full Moon 100%

22:41

04:54

Sun - Rise: 05:34, Set: 21:46, Transit: 13:40. Moon - Rise: 22:41, Set: 04:54. Civil Dark: 22:30 - 04:50. Nautical Dark: 23:34 - 03:46. Astro Dark: N/A - N/A

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: 25/05/26 02:21:29. Forecast: 25/05/26 to 31/05/26. Timezone: UTC+2.00