Clear Outside v1.0 - International Weather Forecasts For Astronomers

Monday 24

Waxing Gibbous 90%

19:27

03:11

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
09 Bad
10 Bad
11 Bad
12 Bad
13 Bad

Sun - Rise: 06:46, Set: 20:44, Transit: 13:44. Moon - Rise: 19:27, Set: 03:11. Civil Dark: 21:20 - 06:11. Nautical Dark: 22:04 - 05:27. Astro Dark: 22:53 - 04:38

Total Clouds (% Sky Obscured)

75
82
99
99
87
87
90
44
59
68
77
71
70
84
91
86
83
97
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

6
9
4
0
1
1
2
3
2
2
3
0
0
0
0
8
0
0
0
25
51
92
84
90

Medium Clouds (% Sky Obscured)

46
43
79
86
37
59
76
27
25
23
25
19
22
8
3
41
8
14
79
87
17
16
77
40

High Clouds (% Sky Obscured)

75
82
89
55
63
40
55
6
35
49
67
50
49
79
91
65
80
97
100
100
68
68
100
83

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
Light Rain

Precipitation Probability (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
3
5
5
8
37
52
75

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
0.4

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

22
22
22
22
22
21
20
19
18
18
17
16
15
15
14
14
13
13
13
15
16
18
18
18

Feels Like (°C)

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

Dew Point (°C)

7
6
6
6
6
6
6
6
7
8
7
7
7
7
7
7
6
6
7
7
9
12
15
12

Relative Humidity (%)

39
36
34
34
35
38
40
42
46
51
53
55
56
58
59
62
62
64
63
59
63
70
80
70

Pressure (mb)

1019
1018
1017
1016
1015
1015
1015
1014
1015
1014
1014
1013
1013
1012
1012
1012
1012
1012
1012
1011
1011
1012
1012
1012

Ozone (du)

326
325
323
320
319
319
319
320
318
317
314
312
313
314
314
313
313
312
312
313
313
312
312
312

Tuesday 25

Waxing Gibbous 95%

19:51

04:26

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
09 Bad
10 Bad
11 Bad
12 Bad
13 Bad

Sun - Rise: 06:47, Set: 20:42, Transit: 13:44. Moon - Rise: 19:51, Set: 04:26. Civil Dark: 21:17 - 06:12. Nautical Dark: 22:01 - 05:29. Astro Dark: 22:50 - 04:40

Total Clouds (% Sky Obscured)

99
96
100
99
98
86
93
80
99
100
70
100
100
100
100
94
87
87
82
68
79
83
74
98

Low Clouds (% Sky Obscured)

89
76
100
93
96
64
87
69
26
28
30
27
42
42
42
36
35
35
39
41
79
69
17
17

Medium Clouds (% Sky Obscured)

63
39
97
99
82
19
69
23
23
34
16
37
28
58
57
79
60
60
49
39
38
22
18
15

High Clouds (% Sky Obscured)

77
90
11
14
10
3
3
9
94
100
70
100
100
100
100
40
35
30
0
0
2
30
25
94

ISS Passover

Visibility (miles)

9
9
9
8
9
7
8
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
2
47
44
87
100
97
86
68
29
9
2
0
0
0

Precipitation Type

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

Precipitation Probability (%)

81
67
64
70
38
50
39
35
40
55
48
50
56
79
44
20
2
1
5
3
0
1
9
10

Precipitation Amount (mm)

0.6
0.4
0.3
0.6
0
0.2
0
0
0
0
0.4
0.3
0
0.7
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

17
17
18
18
18
18
18
17
17
17
17
17
17
17
17
17
17
17
18
19
20
21
23
24

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

78
76
66
76
86
86
82
86
89
92
95
95
96
95
93
92
92
92
93
86
79
74
61
51

Pressure (mb)

1012
1012
1011
1011
1011
1011
1010
1011
1011
1011
1011
1011
1011
1011
1011
1011
1011
1012
1012
1012
1013
1013
1013
1013

Ozone (du)

313
314
314
313
314
313
313
312
311
311
310
311
313
312
313
313
313
314
314
315
314
313
312
312

Wednesday 26

Waxing Gibbous 98%

20:09

05:42

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
09 Bad
10 Bad
11 Bad
12 Bad
13 Bad

Sun - Rise: 06:49, Set: 20:40, Transit: 13:44. Moon - Rise: 20:09, Set: 05:42. Civil Dark: 21:15 - 06:14. Nautical Dark: 21:59 - 05:31. Astro Dark: 22:47 - 04:43

Total Clouds (% Sky Obscured)

93
79
100
100
69
100
83
97
55
50
100
95
100
100
100
100
100
100
100
100
100
95
90
80

Low Clouds (% Sky Obscured)

18
14
20
10
3
9
14
2
0
0
0
1
4
3
0
0
0
16
19
23
22
22
26
29

Medium Clouds (% Sky Obscured)

17
22
22
0
0
39
31
50
16
13
19
84
81
62
14
49
92
100
94
62
79
35
72
55

High Clouds (% Sky Obscured)

93
79
100
100
64
100
69
80
43
38
100
89
100
100
100
100
100
100
100
100
100
83
63
43

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
2
4
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
Light Rain
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

0
0
0
0
2
0
0
0
0
1
7
17
85
48
40
23
14
43
36
43
47
45
41
38

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0.7
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

25
26
27
26
26
26
25
23
21
21
20
19
19
18
18
18
18
18
18
19
21
22
23
24

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

47
43
39
37
39
42
49
52
54
58
60
66
69
90
89
90
92
92
89
86
79
69
59
60

Pressure (mb)

1012
1012
1012
1012
1012
1011
1011
1011
1011
1011
1011
1011
1011
1010
1010
1010
1009
1010
1010
1010
1010
1010
1010
1010

Ozone (du)

312
312
312
313
313
312
312
311
313
309
309
306
307
311
311
311
310
313
314
315
314
315
317
318

Thursday 27

Waxing Gibbous 100%

20:24

06:58

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 OK
08 Bad
09 Bad
10 Bad
11 Bad
12 Bad
13 Bad

Sun - Rise: 06:50, Set: 20:38, Transit: 13:43. Moon - Rise: 20:24, Set: 06:58. Civil Dark: 21:13 - 06:16. Nautical Dark: 21:56 - 05:33. Astro Dark: 22:44 - 04:45

Total Clouds (% Sky Obscured)

90
90
100
100
100
100
100
100
100
100
100
100
82
82
56
52
42
39
96
98
100
100
100
100

Low Clouds (% Sky Obscured)

30
41
61
45
47
45
61
70
78
87
92
52
46
41
28
32
22
19
21
21
22
46
64
63

Medium Clouds (% Sky Obscured)

45
38
45
89
97
99
99
100
100
96
91
89
16
45
4
4
6
8
18
60
100
95
89
85

High Clouds (% Sky Obscured)

66
80
100
100
100
100
100
100
100
100
100
100
71
53
46
31
14
1
73
87
100
100
100
93

ISS Passover

Visibility (miles)

9
9
9
9
9
6
5
4
3
2
9
9
9
8
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

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

Precipitation Probability (%)

58
79
95
95
95
95
95
95
95
95
95
95
95
95
95
91
53
6
9
13
10
28
40
51

Precipitation Amount (mm)

0.2
0.5
0.8
1.3
2.1
2.8
2.4
1.5
1
1.6
1.6
2
1.7
1.3
1.3
0.7
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

6
6
5
3
4
4
3
3
3
2
4
5
5
7
8
9
7
7
8
8
10
11
11
12

Chance of Frost

Temperature (°C)

25
25
25
24
23
21
20
20
19
19
19
19
18
18
17
17
16
16
15
17
17
18
19
20

Feels Like (°C)

25
25
25
25
23
22
22
20
21
21
20
20
20
18
18
18
18
17
16
15
16
17
17
16

Dew Point (°C)

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

Relative Humidity (%)

53
47
47
49
58
81
88
93
96
95
95
96
96
96
95
96
95
95
92
87
82
78
70
58

Pressure (mb)

1010
1009
1009
1009
1008
1008
1008
1007
1007
1007
1006
1006
1006
1006
1006
1007
1007
1007
1008
1008
1008
1009
1009
1009

Ozone (du)

316
314
312
310
310
309
309
308
309
309
312
315
319
323
331
333
334
335
337
337
340
340
343
342

Friday 28

Full Moon 99%

20:37

08:14

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 OK
07 OK
08 OK
09 OK
10 OK
11 Bad
12 Bad
13 Bad

Sun - Rise: 06:52, Set: 20:36, Transit: 13:43. Moon - Rise: 20:37, Set: 08:14. Civil Dark: 21:11 - 06:17. Nautical Dark: 21:54 - 05:35. Astro Dark: 22:41 - 04:48

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
97
95
92
85
67
51
58
64
68
55
38
23
18
26
34
65
81
95

Low Clouds (% Sky Obscured)

85
83
47
26
27
47
30
59
44
30
30
34
32
30
30
21
13
5
8
18
27
48
64
79

Medium Clouds (% Sky Obscured)

73
47
21
24
99
65
61
93
86
79
52
4
14
22
22
19
15
12
9
9
2
5
7
7

High Clouds (% Sky Obscured)

57
83
100
100
87
100
77
57
35
37
24
18
27
29
29
17
12
2
2
2
1
27
55
80

ISS Passover

Visibility (miles)

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

Precipitation Probability (%)

52
61
69
71
69
77
95
72
50
15
6
0
1
1
0
1
1
0
1
2
1
17
24
29

Precipitation Amount (mm)

0
0
0.3
0.3
0.3
0.3
1
0.6
0.4
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

20
19
19
19
19
18
18
17
16
16
16
15
15
15
15
14
14
14
15
16
17
19
19
20

Feels Like (°C)

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

Dew Point (°C)

11
12
14
12
12
12
14
15
14
14
14
14
13
13
13
12
12
12
13
13
13
14
14
14

Relative Humidity (%)

55
61
72
61
64
69
77
87
87
90
89
89
90
89
87
86
87
86
87
83
78
76
72
70

Pressure (mb)

1009
1010
1010
1010
1010
1010
1010
1010
1011
1011
1011
1011
1011
1011
1011
1011
1011
1011
1011
1012
1012
1012
1012
1012

Ozone (du)

340
340
339
339
339
338
338
339
341
342
342
343
342
342
342
341
338
335
332
327
322
316
313
310

Saturday 29

Waning Gibbous 96%

20:49

09:31

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
09 Bad
10 Bad
11 Bad
12 Bad
13 Bad

Sun - Rise: 06:54, Set: 20:34, Transit: 13:43. Moon - Rise: 20:49, Set: 09:31. Civil Dark: 21:08 - 06:19. Nautical Dark: 21:51 - 05:37. Astro Dark: 22:38 - 04:50

Total Clouds (% Sky Obscured)

95
95
96
97
99
100
100
100
100
99
98
97
93
88
82
79
75
63
69
79
91
89
87
83

Low Clouds (% Sky Obscured)

81
82
84
66
47
25
20
18
17
23
32
41
48
58
67
57
46
35
44
52
61
60
59
57

Medium Clouds (% Sky Obscured)

20
27
35
54
72
92
94
97
100
96
93
91
70
47
18
22
25
17
13
8
3
2
1
0

High Clouds (% Sky Obscured)

82
81
80
65
54
40
60
75
100
66
33
0
0
0
0
3
7
12
36
57
73
63
72
81

ISS Passover

Visibility (miles)

9
8
8
7
8
8
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
Very Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

35
37
34
29
29
34
41
53
77
93
95
95
73
48
20
20
18
13
13
13
13
15
14
13

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0.2
0.6
1
0.9
0.5
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

17
19
19
19
19
19
19
17
18
18
18
17
17
17
16
16
16
15
15
16
16
16
17
17

Dew Point (°C)

14
14
14
14
14
15
15
14
14
14
13
13
12
13
14
15
15
15
15
15
14
14
13
13

Relative Humidity (%)

68
67
66
65
68
71
75
76
78
81
77
74
70
74
79
85
86
88
89
81
73
67
61
56

Pressure (mb)

1012
1012
1012
1012
1012
1012
1012
1012
1012
1011
1011
1011
1010
1010
1011
1011
1011
1012
1012
1012
1012
1013
1012
1012

Ozone (du)

307
305
303
302
300
299
298
298
298
298
299
301
303
303
303
303
302
301
300
299
299
298
298
297

Sunday 30

Waning Gibbous 91%

21:02

10:50

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

Sun - Rise: 06:55, Set: 20:32, Transit: 13:42. Moon - Rise: 21:02, Set: 10:50. Civil Dark: 21:06 - 06:21. Nautical Dark: 21:48 - 05:39. Astro Dark: 22:35 - 04:52

Total Clouds (% Sky Obscured)

88
94
98
95
87
86
78
74
72
52
33
14
20
28
29
34
40
48

Low Clouds (% Sky Obscured)

59
59
59
53
49
43
49
58
63
45
26
7
8
10
5
8
17
26

Medium Clouds (% Sky Obscured)

2
3
4
35
65
86
78
74
67
44
22
0
5
10
16
22
22
22

High Clouds (% Sky Obscured)

77
86
98
88
79
70
67
55
50
31
21
0
0
0
0
0
0
0

ISS Passover

Visibility (miles)

9
9
9
9
7
4
2
4
7
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

Precipitation Type

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

Precipitation Probability (%)

10
5
3
35
63
95
95
95
95
93
65
40
32
28
18
30
36
39

Precipitation Amount (mm)

0
0
0
0
0.3
0.8
1.4
1.6
1.3
0.6
0.3
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

12
12
12
11
14
16
19
18
18
17
17
16
16
16
16
16
16
16

Relative Humidity (%)

52
49
47
45
57
73
92
92
92
92
93
93
93
93
93
93
93
93

Pressure (mb)

1012
1012
1011
1011
1010
1010
1010
1010
1010
1010
1010
1009
1009
1009
1009
1009
1009
1009

Ozone (du)

297
297
297
297
298
298
299
303
307
312
312
313
313
314
315
316
317
319

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

Generated: 24/08/26 13:30:52. Forecast: 24/08/26 to 30/08/26. Timezone: UTC+2.00