Clear Outside v1.0 - International Weather Forecasts For Astronomers

Monday 28

Waning Gibbous 93%

19:40

09:55

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
03 Bad
04 Bad
05 Bad
06 Bad
07 Bad
08 Bad

Sun - Rise: 07:40, Set: 19:27, Transit: 13:33. Moon - Rise: 19:40, Set: 09:55. Civil Dark: 19:59 - 07:07. Nautical Dark: 20:38 - 06:29. Astro Dark: 21:17 - 05:50

Total Clouds (% Sky Obscured)

92
94
95
91
99
100
100
99
100
100
100
100
98
98
100
100
100
100
100
100
100
99
96
100

Low Clouds (% Sky Obscured)

1
6
45
2
26
20
74
49
19
12
28
10
12
15
17
20
21
16
14
14
17
0
0
0

Medium Clouds (% Sky Obscured)

92
84
95
89
96
99
73
80
89
100
99
100
81
69
55
75
66
94
86
86
92
76
92
56

High Clouds (% Sky Obscured)

92
94
95
56
96
100
100
92
100
100
100
87
91
95
100
100
100
100
100
100
100
99
72
100

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
8
4
5
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 (%)

24
3
3
12
5
17
10
6
20
46
45
31
27
9
11
4
0
0
0
0
0
1
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
2
2
3
2
2
5
6
7
8
7
6
7
8
9
9
9
7
5
4
4
5
4
5

Chance of Frost

Temperature (°C)

16
17
18
20
21
22
22
22
22
21
20
19
18
18
18
17
17
17
17
16
16
16
16
16

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

89
83
73
72
61
58
57
59
59
60
75
86
89
90
92
93
95
93
92
87
79
75
75
73

Pressure (mb)

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

Ozone (du)

283
283
284
283
285
285
286
286
286
286
287
287
287
288
289
290
290
291
290
290
291
291
292
292

Tuesday 29

Waning Gibbous 86%

20:02

11:21

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 Bad
02 Bad
03 Bad
04 Bad
05 Bad
06 Bad
07 Bad
08 Bad

Sun - Rise: 07:42, Set: 19:24, Transit: 13:32. Moon - Rise: 20:02, Set: 11:21. Civil Dark: 19:57 - 07:09. Nautical Dark: 20:35 - 06:31. Astro Dark: 21:15 - 05:52

Total Clouds (% Sky Obscured)

100
100
84
62
100
86
80
66
58
81
84
82
100
83
75
46
67
64
57
50
74
83
74
85

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
1
48
65
65
38
33
26
6
0
0
6
1
0
1
0

Medium Clouds (% Sky Obscured)

65
50
51
52
94
86
80
63
58
81
84
82
90
59
75
22
31
24
23
21
57
67
63
68

High Clouds (% Sky Obscured)

100
100
62
56
100
86
59
54
45
45
0
7
45
52
50
10
57
46
42
45
66
67
59
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
2
12
7
17
0
0
0
0
0
0
0
3
3
4
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
6
7
7
7
7
6
6
6
5
5
5
5
6
7
7
9
10
9
9
9
11
10

Chance of Frost

Temperature (°C)

18
20
22
24
26
27
27
27
27
26
24
23
21
21
20
21
20
21
21
21
20
20
20
20

Feels Like (°C)

17
19
20
23
24
25
24
25
26
25
23
22
21
21
20
19
20
18
17
18
18
17
17
18

Dew Point (°C)

13
13
12
12
12
11
10
12
13
14
14
14
14
14
14
14
12
11
9
8
9
9
9
9

Relative Humidity (%)

71
64
54
47
41
37
36
39
43
47
53
58
64
65
65
64
59
53
46
45
48
46
46
49

Pressure (mb)

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

Ozone (du)

292
291
291
291
290
289
288
288
287
289
291
288
287
286
285
284
282
282
281
279
277
276
275
274

Wednesday 30

Waning Gibbous 77%

20:32

12:48

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
03 Bad
04 Bad
05 Bad
06 Bad
07 Bad
08 Bad

Sun - Rise: 07:43, Set: 19:22, Transit: 13:32. Moon - Rise: 20:32, Set: 12:48. Civil Dark: 19:55 - 07:11. Nautical Dark: 20:33 - 06:32. Astro Dark: 21:12 - 05:53

Total Clouds (% Sky Obscured)

95
100
100
100
98
99
99
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

1
0
1
35
45
50
51
56
45
70
94
78
75
94
85
77
65
48
33
71
36
72
62
64

Medium Clouds (% Sky Obscured)

70
59
96
100
98
99
99
100
98
99
99
99
69
100
99
98
98
99
56
77
90
74
68
72

High Clouds (% Sky Obscured)

86
100
98
98
96
96
98
100
100
100
100
100
100
100
100
99
99
99
100
100
100
55
45
79

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
6
9
9
9
9
9
9
9
9
2
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
Very Light Rain
None
Very Light Rain
Very Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
None
None
None
None
None
None
None

Precipitation Probability (%)

0
0
1
4
9
37
65
53
57
69
87
85
90
95
95
95
95
63
34
9
6
3
4
5

Precipitation Amount (mm)

0
0
0
0
0
0
0.3
0
0.3
0.3
0.6
0.6
0.6
0.6
0.7
1.4
0.6
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

21
22
24
25
25
25
23
22
21
21
20
20
19
19
19
19
18
18
18
17
17
17
17
16

Feels Like (°C)

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

Dew Point (°C)

9
11
12
14
16
16
18
19
19
18
18
17
17
17
17
17
17
17
17
17
16
16
15
15

Relative Humidity (%)

46
48
48
51
59
60
70
79
84
81
85
86
88
86
85
88
95
96
96
96
93
92
90
93

Pressure (mb)

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

Ozone (du)

273
274
273
273
273
273
274
274
274
274
274
273
273
273
274
273
273
274
276
278
279
280
280
280

Thursday 1

Waning Gibbous 66%

21:16

14:11

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

Sun - Rise: 07:45, Set: 19:20, Transit: 13:32. Moon - Rise: 21:16, Set: 14:11. Civil Dark: 19:53 - 07:12. Nautical Dark: 20:31 - 06:34. Astro Dark: 21:10 - 05:55

Total Clouds (% Sky Obscured)

100
99
68
72
82
76
76
78
82
67
34
43
43
36
33
31
35
35
30
30
48
63
77
73

Low Clouds (% Sky Obscured)

64
42
36
36
29
24
23
19
14
6
0
0
0
0
1
2
3
3
3
3
9
14
20
6

Medium Clouds (% Sky Obscured)

84
98
62
60
55
50
45
35
25
20
12
8
5
0
0
0
0
0
1
26
26
24
35
46

High Clouds (% Sky Obscured)

33
29
25
35
52
62
67
67
70
43
2
26
40
36
33
31
35
35
30
30
45
45
45
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 (%)

3
0
1
1
0
1
1
0
4
6
5
11
6
0
1
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
8
8
8
7
7
7
6
6
4
4
4
3
3
3
4
3
3
3
3
2
1
2

Chance of Frost

Temperature (°C)

17
17
18
18
18
18
19
19
19
18
17
16
15
15
14
13
13
12
12
12
11
11
11
11

Feels Like (°C)

17
16
16
18
17
18
17
18
18
17
16
16
15
14
13
13
12
12
11
11
11
10
10
10

Dew Point (°C)

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

Relative Humidity (%)

90
83
72
62
53
47
43
42
42
45
51
59
67
75
76
79
80
81
81
81
81
81
80
78

Pressure (mb)

1023
1024
1024
1025
1025
1025
1025
1026
1026
1026
1027
1028
1028
1029
1029
1029
1029
1029
1029
1029
1029
1030
1030
1030

Ozone (du)

281
282
285
290
291
287
285
284
283
283
283
283
283
282
282
282
282
282
283
283
283
283
284
284

Friday 2

Waning Gibbous 54%

22:16

15:21

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

Sun - Rise: 07:46, Set: 19:18, Transit: 13:31. Moon - Rise: 22:16, Set: 15:21. Civil Dark: 19:50 - 07:14. Nautical Dark: 20:29 - 06:36. Astro Dark: 21:08 - 05:57

Total Clouds (% Sky Obscured)

69
60
51
39
33
37
40
43
59
75
91
67
43
19
32
43
56
62
72
82
79
76
76
77

Low Clouds (% Sky Obscured)

3
0
2
4
7
10
11
14
9
6
4
3
1
0
0
0
0
0
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

41
36
26
13
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

69
60
51
39
23
23
24
22
44
68
91
64
42
18
31
42
47
57
68
76
71
67
63
58

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)

3
3
3
3
3
4
4
4
4
4
4
6
5
5
6
5
5
5
5
5
5
5
5
5

Chance of Frost

Temperature (°C)

14
15
17
18
19
21
21
21
21
20
19
18
17
16
15
15
14
13
13
13
13
12
12
11

Feels Like (°C)

12
13
14
14
14
15
23
22
22
22
22
22
16
16
15
15
14
14
12
13
13
12
12
12

Dew Point (°C)

8
8
8
8
7
7
7
7
7
7
8
8
8
8
8
8
8
8
8
9
9
9
9
9

Relative Humidity (%)

70
64
58
51
45
40
40
39
39
42
47
52
55
59
62
66
68
71
72
76
77
80
83
87

Pressure (mb)

1030
1031
1031
1031
1031
1030
1030
1030
1030
1030
1030
1030
1030
1030
1031
1030
1030
1030
1030
1029
1029
1029
1028
1028

Ozone (du)

285
286
286
286
286
285
286
286
286
287
287
288
289
290
291
291
291
292
291
291
291
292
293
293

Saturday 3

Third Quarter 42%

23:32

16:14

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
03 Bad
04 Bad
05 Bad
06 Bad
07 Bad
08 Bad

Sun - Rise: 07:48, Set: 19:16, Transit: 13:31. Moon - Rise: 23:32, Set: 16:14. Civil Dark: 19:48 - 07:15. Nautical Dark: 20:26 - 06:37. Astro Dark: 21:05 - 05:58

Total Clouds (% Sky Obscured)

75
73
75
80
86
79
79
83
83
84
85
86
87
82
80
79
72
74
74
72
81
88
100
100

Low Clouds (% Sky Obscured)

0
0
4
8
11
28
43
56
59
63
68
70
73
74
55
37
19
14
9
4
5
7
9
6

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
1
1
2
3
4
4
4
3
3
3
3
11
20
26
43
61
85
72

High Clouds (% Sky Obscured)

54
53
51
52
48
46
53
55
63
75
85
71
52
32
37
38
45
50
55
63
76
87
100
99

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
1
7
6
0
6
12
1
4
3
0
1
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
7
7
7
7
7
7
7
7
7
6
6
6
6
5
5
5
4
4
4
5
5

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

12
12
13
14
15
16
22
22
21
21
21
22
19
18
18
18
18
18
14
14
13
14
14
13

Dew Point (°C)

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

Relative Humidity (%)

79
73
67
63
58
54
53
53
51
55
60
63
67
70
72
64
58
51
50
50
50
51
52
52

Pressure (mb)

1028
1028
1027
1027
1026
1025
1024
1024
1023
1023
1023
1022
1022
1022
1022
1022
1021
1021
1021
1021
1021
1021
1021
1021

Ozone (du)

293
293
293
293
292
292
292
292
292
291
291
291
291
292
292
293
293
293
292
292
291
291
291
291

Sunday 4

Waning Crescent 40%

00:57

16:51

Sun - Rise: 07:50, Set: 19:13, Transit: 13:31. Moon - Rise: 00:57, Set: 16:51. Civil Dark: 19:46 - 07:17. Nautical Dark: 20:24 - 06:39. Astro Dark: 21:03 - 06:00

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: 28/09/26 09:20:48. Forecast: 28/09/26 to 04/10/26. Timezone: UTC+2.00