Clear Outside v1.0 - International Weather Forecasts For Astronomers

Friday 21

Waxing Gibbous 66%

17:17

00:07

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
09 Bad
10 Bad
11 Bad
12 Bad

Sun - Rise: 06:41, Set: 20:51, Transit: 13:45. Moon - Rise: 17:17, Set: 00:07. Civil Dark: 21:26 - 06:06. Nautical Dark: 22:11 - 05:21. Astro Dark: 23:02 - 04:30

Total Clouds (% Sky Obscured)

86
90
92
94
100
100
100
91
100
93
100
100
100
100
100
100
100
69
52
47
47
56
64
83

Low Clouds (% Sky Obscured)

49
45
31
30
54
52
68
69
71
59
34
25
71
35
21
30
36
39
40
33
26
32
42
76

Medium Clouds (% Sky Obscured)

83
90
92
94
100
100
98
73
98
89
100
85
96
100
100
96
48
23
0
0
24
24
19
24

High Clouds (% Sky Obscured)

35
27
92
94
100
100
100
44
45
42
100
98
100
100
100
100
99
46
0
0
0
0
0
0

ISS Passover

Visibility (miles)

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

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

Precipitation Probability (%)

70
43
74
71
95
70
42
21
51
56
55
59
62
53
26
3
3
5
5
8
41
57
59
61

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

11
12
13
13
13
13
13
12
12
12
12
11
12
12
12
12
11
11
11
12
12
12
11
12

Relative Humidity (%)

57
60
67
68
69
74
74
74
78
79
80
80
89
90
92
90
89
92
92
90
83
78
71
70

Pressure (mb)

1011
1011
1011
1011
1012
1012
1012
1012
1013
1013
1014
1014
1015
1015
1015
1016
1016
1016
1017
1017
1018
1019
1019
1020

Ozone (du)

342
346
344
343
342
343
347
348
349
349
351
352
351
351
354
355
355
356
357
357
358
359
359
357

Saturday 22

Waxing Gibbous 75%

18:12

00:58

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

Sun - Rise: 06:43, Set: 20:49, Transit: 13:45. Moon - Rise: 18:12, Set: 00:58. Civil Dark: 21:24 - 06:07. Nautical Dark: 22:09 - 05:23. Astro Dark: 22:59 - 04:33

Total Clouds (% Sky Obscured)

77
66
81
72
74
68
41
36
14
6
2
4
8
38
35
35
51
68
70
59
37
68
70
55

Low Clouds (% Sky Obscured)

70
60
80
72
74
68
41
36
14
5
0
0
0
2
0
0
13
28
32
21
2
28
31
23

Medium Clouds (% Sky Obscured)

19
13
18
2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
20

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
1
2
2
2
4
8
38
35
35
45
45
40
36
37
40
37
7

ISS Passover

Visibility (miles)

5
6
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

Very Light Rain
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 (%)

54
33
22
6
2
1
2
9
1
1
0
1
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Amount (mm)

0.3
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
9
9
8
9
8
7
7
6
5
4
3
3
3
3
2
2
2
2
2
2
4
5

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

70
65
56
54
55
49
52
56
67
75
78
80
83
84
86
84
86
83
81
76
69
61
53
46

Pressure (mb)

1020
1020
1021
1021
1021
1021
1022
1022
1023
1024
1024
1024
1024
1024
1024
1024
1024
1025
1025
1025
1025
1026
1026
1026

Ozone (du)

355
355
354
353
349
347
346
345
344
343
342
341
340
340
339
339
339
340
339
340
342
344
345
346

Sunday 23

Waxing Gibbous 83%

18:55

02:01

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

Sun - Rise: 06:44, Set: 20:47, Transit: 13:45. Moon - Rise: 18:55, Set: 02:01. Civil Dark: 21:22 - 06:09. Nautical Dark: 22:06 - 05:25. Astro Dark: 22:56 - 04:36

Total Clouds (% Sky Obscured)

51
30
34
46
25
22
4
7
6
2
3
9
0
0
0
0
0
0
1
1
1
1
32
38

Low Clouds (% Sky Obscured)

19
8
0
12
18
16
3
5
4
1
2
8
0
0
0
0
0
0
0
0
0
0
2
4

Medium Clouds (% Sky Obscured)

30
16
24
26
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
1
1
1
1
30
35

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

18
20
20
21
20
20
20
18
16
15
14
14
13
13
12
12
11
11
10
12
13
15
16
16

Dew Point (°C)

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

Relative Humidity (%)

42
40
38
37
37
38
42
50
56
61
63
65
68
70
75
80
84
84
83
77
69
60
50
42

Pressure (mb)

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

Ozone (du)

350
350
348
346
345
343
341
340
340
338
337
336
334
333
332
331
330
330
328
324
321
321
320
317

Monday 24

Waxing Gibbous 90%

19:27

03:11

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
03 Bad
04 Bad
05 Bad
06 Bad
07 Bad
08 Bad
09 Bad
10 Bad
11 Bad
12 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)

44
50
60
73
79
89
100
70
40
2
25
37
50
65
65
81
97
90
95
100
99
98
99
98

Low Clouds (% Sky Obscured)

6
7
9
10
7
3
0
0
0
0
0
0
0
0
0
0
0
0
0
5
9
53
69
72

Medium Clouds (% Sky Obscured)

0
0
0
0
1
25
3
18
24
2
3
0
0
0
0
0
9
22
66
85
62
49
73
60

High Clouds (% Sky Obscured)

40
49
60
71
79
89
100
70
40
2
25
37
50
65
61
77
96
89
85
77
98
87
93
86

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
3
10
10
13
4
0
6
8

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)

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

Chance of Frost

Temperature (°C)

21
22
23
23
23
23
22
21
20
19
17
17
16
15
15
15
15
14
14
15
16
19
20
21

Feels Like (°C)

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

Dew Point (°C)

6
5
5
4
4
5
6
6
5
6
6
6
6
6
5
6
6
6
6
6
9
13
15
15

Relative Humidity (%)

36
33
30
29
29
32
34
36
37
41
48
50
52
52
52
53
54
55
56
54
60
71
74
70

Pressure (mb)

1022
1021
1020
1019
1018
1018
1017
1016
1016
1016
1016
1016
1015
1015
1014
1013
1013
1013
1012
1012
1012
1012
1012
1012

Ozone (du)

316
316
317
318
317
316
315
314
313
314
312
309
310
310
309
307
307
306
307
308
309
310
311
311

Tuesday 25

Waxing Gibbous 95%

19:51

04:26

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
09 Bad
10 Bad
11 Bad
12 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)

97
98
99
100
91
80
73
69
75
76
91
91
90
89
91
91
92
96
98
97
97
97
92
87

Low Clouds (% Sky Obscured)

40
91
90
95
67
33
28
23
20
16
47
33
23
28
37
43
46
55
63
72
68
50
47
39

Medium Clouds (% Sky Obscured)

32
55
83
53
76
61
27
26
32
34
53
71
52
49
47
46
45
44
45
37
31
25
33
40

High Clouds (% Sky Obscured)

79
86
85
78
47
26
29
25
37
45
50
62
78
84
87
89
65
39
13
35
60
84
68
52

ISS Passover

Visibility (miles)

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

Precipitation Probability (%)

7
11
32
53
60
58
35
39
39
54
55
62
70
95
95
95
91
80
73
61
46
21
27
29

Precipitation Amount (mm)

0
0
0
0.2
0.3
0.2
0
0
0
0.3
0.3
0.4
0.5
1.4
1.4
1.3
0.8
0.5
0.5
0.4
0.2
0
0
0

Wind Speed/Direction (mph)

11
11
8
6
5
4
6
7
6
5
5
4
5
5
4
4
4
4
4
4
5
5
6
6

Chance of Frost

Temperature (°C)

22
23
21
21
22
21
21
20
19
19
18
18
19
18
18
18
18
18
18
19
20
22
23
25

Feels Like (°C)

19
20
20
21
22
23
22
21
20
21
20
20
20
19
19
19
19
19
19
19
19
19
19
20

Dew Point (°C)

13
14
16
17
17
17
18
18
17
17
17
17
17
16
16
15
15
15
14
14
14
14
13
13

Relative Humidity (%)

56
59
73
75
74
77
80
88
92
90
90
89
88
85
85
82
80
80
77
76
67
59
52
46

Pressure (mb)

1012
1012
1012
1012
1012
1012
1012
1012
1012
1012
1013
1013
1013
1013
1013
1013
1013
1013
1013
1014
1014
1014
1014
1014

Ozone (du)

312
314
316
316
316
315
312
312
313
311
308
304
303
302
302
302
302
300
299
297
297
296
296
295

Wednesday 26

Waxing Gibbous 98%

20:09

05:42

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
09 Bad
10 Bad
11 Bad
12 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)

81
84
87
89
89
87
84
87
88
92
95
97
100
100
100
100
100
100
100
100
100
100
95
84

Low Clouds (% Sky Obscured)

42
35
28
22
15
7
2
8
13
19
12
6
0
10
19
27
40
51
63
48
26
11
6
4

Medium Clouds (% Sky Obscured)

48
37
26
17
27
40
54
60
62
60
45
30
20
25
29
33
40
44
50
67
79
79
61
42

High Clouds (% Sky Obscured)

38
49
59
69
72
77
82
67
47
27
49
73
100
100
100
100
99
99
98
99
99
100
94
84

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
Very Light Rain
None
None

Precipitation Probability (%)

27
31
32
31
30
24
10
19
23
23
26
24
15
27
29
32
25
18
5
39
62
84
57
38

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.3
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

26
28
29
29
30
29
28
27
25
24
22
22
21
21
21
21
21
21
21
21
21
22
22
24

Feels Like (°C)

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

Dew Point (°C)

12
12
11
10
9
10
11
12
13
14
16
15
15
14
15
15
15
15
16
16
17
17
18
16

Relative Humidity (%)

41
36
33
29
26
31
35
41
47
55
65
65
66
67
68
67
68
69
71
73
74
75
78
62

Pressure (mb)

1014
1013
1013
1013
1012
1012
1012
1012
1012
1012
1011
1011
1011
1011
1010
1009
1009
1008
1007
1007
1007
1006
1006
1006

Ozone (du)

295
295
295
295
295
295
294
294
294
295
295
296
296
296
297
298
299
301
302
303
305
307
309
312

Thursday 27

Waxing Gibbous 100%

20:24

06:58

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

Sun - Rise: 06:50, Set: 20:38, Transit: 13:44. 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)

71
70
74
78
78
79
77
66
56
42
42
40
38
40
43
39
45
48
47

Low Clouds (% Sky Obscured)

1
9
13
14
11
10
10
19
26
36
27
15
2
9
16
23
33
46
47

Medium Clouds (% Sky Obscured)

22
37
53
68
67
66
65
43
23
15
22
30
35
33
26
17
14
10
6

High Clouds (% Sky Obscured)

71
68
69
61
61
41
16
11
5
0
0
0
3
3
3
0
7
14
21

ISS Passover

Visibility (miles)

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

Precipitation Type

None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

1
21
31
39
42
36
10
12
10
3
5
5
0
1
1
1
13
17
21

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

15
18
17
15
14
13
12
12
10
9
8
7
7
6
8
8
9
9
9

Chance of Frost

Temperature (°C)

26
28
27
25
24
23
23
22
21
21
20
20
19
19
19
18
18
18
17

Feels Like (°C)

20
20
28
24
22
22
22
21
18
18
19
18
18
18
17
16
17
16
15

Dew Point (°C)

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

Relative Humidity (%)

51
41
42
42
43
45
48
50
54
59
64
67
69
72
75
76
78
78
79

Pressure (mb)

1006
1005
1006
1006
1007
1007
1007
1007
1008
1008
1009
1009
1009
1009
1009
1009
1010
1010
1010

Ozone (du)

315
317
321
324
327
330
334
337
340
344
347
348
348
349
348
347
346
345
343

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

Generated: 21/08/26 13:35:40. Forecast: 21/08/26 to 27/08/26. Timezone: UTC+2.00