Clear Outside v1.0 - International Weather Forecasts For Astronomers

Tuesday 28

Waxing Gibbous 100%

21:25

05:27

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

Sun - Rise: 06:05, Set: 21:34, Transit: 13:49. Moon - Rise: 21:25, Set: 05:27. Civil Dark: 22:14 - 05:25. Nautical Dark: 23:09 - 04:31. Astro Dark: 00:26 - 03:15

Total Clouds (% Sky Obscured)

9
8
8
24
56
31
34
22
58
14
25
64
53
70
61
8
2
0
1
0
0
0
2
4

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)

7
7
8
5
6
18
19
2
0
4
17
64
49
69
60
8
2
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

7
6
8
24
50
11
16
19
58
9
10
59
49
55
52
2
0
0
1
0
0
0
2
3

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

Chance of Frost

Temperature (°C)

21
23
25
26
28
29
29
29
30
29
29
26
24
22
21
21
21
20
19
19
19
19
21
25

Feels Like (°C)

20
23
25
28
28
29
30
31
31
29
29
26
23
22
20
20
21
20
19
19
18
19
22
25

Dew Point (°C)

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

Relative Humidity (%)

43
38
33
30
28
26
25
24
23
24
27
33
39
45
45
45
45
44
47
46
47
46
40
33

Pressure (mb)

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

Ozone (du)

323
322
321
320
319
319
318
319
320
321
322
322
321
320
319
319
319
320
321
324
324
323
322
321

Wednesday 29

Full Moon 100%

21:46

06:42

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

Sun - Rise: 06:06, Set: 21:32, Transit: 13:49. Moon - Rise: 21:46, Set: 06:42. Civil Dark: 22:12 - 05:26. Nautical Dark: 23:06 - 04:33. Astro Dark: 00:22 - 03:19

Total Clouds (% Sky Obscured)

3
2
0
0
0
9
2
6
11
2
13
10
10
15
29
38
45
46
45
46
46
35
5
24

Low Clouds (% Sky Obscured)

0
0
0
0
0
5
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
2
5
9
2
8
5
6
8
15
20
28
28
31
29
29
22
0
0

High Clouds (% Sky Obscured)

3
2
0
0
0
0
0
0
0
0
0
2
0
0
0
0
0
0
0
6
5
9
4
22

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

Chance of Frost

Temperature (°C)

27
29
31
33
34
35
35
36
36
35
33
30
27
25
24
23
22
21
21
20
19
19
20
22

Feels Like (°C)

27
30
32
33
33
33
34
35
34
32
29
28
26
25
23
23
22
21
20
20
19
19
20
22

Dew Point (°C)

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

Relative Humidity (%)

28
25
21
18
16
14
13
13
12
12
22
24
30
33
35
40
43
47
52
56
60
61
56
50

Pressure (mb)

1016
1015
1015
1015
1014
1014
1013
1013
1012
1012
1012
1013
1013
1013
1014
1014
1014
1014
1014
1014
1014
1014
1014
1015

Ozone (du)

319
320
321
322
322
321
321
321
320
321
321
322
323
323
319
315
315
315
315
312
313
314
315
314

Thursday 30

Waning Gibbous 98%

22:03

07:57

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

Sun - Rise: 06:08, Set: 21:31, Transit: 13:49. Moon - Rise: 22:03, Set: 07:57. Civil Dark: 22:11 - 05:28. Nautical Dark: 23:04 - 04:35. Astro Dark: 00:18 - 03:23

Total Clouds (% Sky Obscured)

94
100
100
100
100
72
70
68
40
34
40
29
74
69
83
100
100
100
100
100
100
100
98
97

Low Clouds (% Sky Obscured)

0
4
14
20
24
24
23
19
22
18
4
0
0
0
0
0
0
0
0
0
19
58
60
47

Medium Clouds (% Sky Obscured)

0
14
45
42
67
57
57
19
26
17
0
0
0
0
10
16
11
6
0
0
24
0
0
0

High Clouds (% Sky Obscured)

93
100
100
100
100
42
41
40
0
4
40
29
64
62
76
100
100
100
100
100
100
100
95
90

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

24
24
25
25
25
25
25
26
25
27
26
23
21
21
20
20
18
18
18
17
16
17
17
19

Dew Point (°C)

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

Relative Humidity (%)

43
35
31
28
27
26
26
26
24
27
30
34
41
50
56
60
61
63
64
65
66
63
57
52

Pressure (mb)

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

Ozone (du)

314
313
313
313
314
314
318
326
334
325
326
324
323
322
322
322
324
324
325
326
327
325
325
324

Friday 31

Waning Gibbous 94%

22:17

09:12

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

Sun - Rise: 06:09, Set: 21:29, Transit: 13:48. Moon - Rise: 22:17, Set: 09:12. Civil Dark: 22:09 - 05:30. Nautical Dark: 23:02 - 04:37. Astro Dark: 00:14 - 03:27

Total Clouds (% Sky Obscured)

96
97
99
100
91
81
74
40
31
39
37
38
32
56
67
82
84
86
89
93
96
75
100
100

Low Clouds (% Sky Obscured)

37
31
37
36
35
34
34
27
16
6
6
6
7
5
2
0
6
13
20
13
7
0
0
0

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
6
7
3
1
0
0
0

High Clouds (% Sky Obscured)

86
91
96
100
84
70
60
15
14
39
37
38
19
56
67
82
82
80
80
86
93
70
100
100

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

Chance of Frost

Temperature (°C)

22
24
25
26
27
27
28
27
26
24
22
20
18
17
17
16
16
15
15
14
15
15
16
18

Feels Like (°C)

21
22
23
24
25
25
25
24
24
22
19
17
16
17
15
15
15
14
14
14
14
15
18
18

Dew Point (°C)

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

Relative Humidity (%)

45
39
33
27
25
26
25
25
29
39
48
59
69
73
72
72
72
73
76
80
80
79
69
61

Pressure (mb)

1018
1018
1018
1017
1017
1017
1016
1016
1016
1017
1017
1017
1018
1018
1018
1018
1018
1018
1017
1017
1017
1017
1018
1018

Ozone (du)

324
325
325
327
329
329
332
331
329
329
330
330
329
330
330
330
327
326
326
327
327
327
326
327

Saturday 1

Waning Gibbous 88%

22:29

No Set

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 OK
05 OK
06 Bad
07 Bad
08 Bad
09 Bad

Sun - Rise: 06:11, Set: 21:28, Transit: 13:48. Moon - Rise: 22:29, Set: No Set. Civil Dark: 22:07 - 05:31. Nautical Dark: 23:00 - 04:39. Astro Dark: 00:10 - 03:30

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
84
68
56
68
85
100
81
61
39
43
52
57
68
77

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
5
11
14
11
5
1
6
9
22
20
16
9
11
12
12
14
16
21
17
18

High Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
84
68
56
68
84
100
74
48
22
16
10
3
28
50

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
6
6
6
6
6
5
5
8
11
11
9
7
6
6
6
7
6
6
6
6
7
7
8

Chance of Frost

Temperature (°C)

20
22
24
25
27
27
28
28
28
26
25
22
20
19
18
18
17
16
16
15
16
17
18
20

Feels Like (°C)

19
21
22
23
24
25
25
26
24
21
20
18
17
16
15
15
14
14
14
14
14
14
15
18

Dew Point (°C)

11
9
7
5
4
3
2
1
1
6
7
7
7
7
7
6
6
7
7
8
8
8
8
8

Relative Humidity (%)

53
43
33
27
23
20
18
16
17
26
31
37
43
47
46
46
48
53
57
64
59
56
53
45

Pressure (mb)

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

Ozone (du)

327
327
326
325
325
324
322
321
321
320
321
321
321
323
325
326
326
325
324
322
322
321
320
318

Sunday 2

Waning Gibbous 80%

22:41

10:27

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 OK
00 OK
01 OK
02 OK
03 Bad
04 Bad
05 Bad
06 Bad
07 Bad
08 Bad
09 Bad

Sun - Rise: 06:12, Set: 21:26, Transit: 13:48. Moon - Rise: 22:41, Set: 10:27. Civil Dark: 22:05 - 05:33. Nautical Dark: 22:57 - 04:41. Astro Dark: 00:06 - 03:34

Total Clouds (% Sky Obscured)

88
92
97
100
88
77
66
72
78
84
67
51
34
36
39
41
45
50
54
66
79
92
86
73

Low Clouds (% Sky Obscured)

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

Medium Clouds (% Sky Obscured)

20
19
18
17
16
17
18
24
32
40
40
33
24
18
14
11
15
19
23
28
33
37
26
18

High Clouds (% Sky Obscured)

73
85
93
100
76
53
34
33
32
34
20
13
7
12
19
26
20
18
21
31
44
56
55
50

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
1
3
4
9
11
10
11
10
8
7
5
0
0
0
0
0
0
0
0
0
0
8
10

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

Chance of Frost

Temperature (°C)

22
24
26
28
29
30
30
31
30
30
29
28
26
24
22
21
20
20
19
19
19
19
20
22

Feels Like (°C)

18
18
19
20
21
27
26
26
26
26
27
25
24
24
23
23
22
16
17
17
16
16
15
18

Dew Point (°C)

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

Relative Humidity (%)

37
31
27
24
21
19
18
17
18
19
20
24
28
33
37
41
45
48
50
53
53
53
52
48

Pressure (mb)

1015
1015
1014
1014
1013
1013
1012
1011
1011
1011
1010
1010
1011
1011
1011
1011
1011
1011
1011
1010
1010
1010
1010
1010

Ozone (du)

317
315
314
314
313
312
311
310
309
309
308
307
307
307
308
310
312
313
313
314
314
314
314
314

Monday 3

Waning Gibbous 71%

22:54

11:43

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

Sun - Rise: 06:14, Set: 21:24, Transit: 13:48. Moon - Rise: 22:54, Set: 11:43. Civil Dark: 22:03 - 05:35. Nautical Dark: 22:55 - 04:44. Astro Dark: 00:03 - 03:37

Total Clouds (% Sky Obscured)

65
63
67
69
77
81
85
90
94
100
89
80
68
69
69
68
63
62
56
61
61
65

Low Clouds (% Sky Obscured)

4
3
2
1
9
22
39
35
25
16
24
29
37
37
34
32
32
32
31
25
22
16

Medium Clouds (% Sky Obscured)

19
45
67
69
77
81
79
63
47
30
33
37
51
47
44
39
43
42
38
32
27
21

High Clouds (% Sky Obscured)

50
39
39
36
51
53
62
75
92
100
71
42
11
23
36
42
29
20
15
31
47
65

ISS Passover

Visibility (miles)

9
9
8
7
6
5
4
4
5
6
7
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

Precipitation Type

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

Precipitation Probability (%)

10
9
7
6
29
44
57
73
76
66
60
63
67
68
61
54
54
45
34
28
23
20

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

7
7
7
7
6
5
7
10
7
6
7
5
4
4
4
4
4
5
5
6
6
5

Chance of Frost

Temperature (°C)

24
27
28
29
30
29
27
25
25
25
24
23
22
21
20
20
20
19
19
19
19
19

Feels Like (°C)

18
19
20
22
23
30
30
30
29
29
29
23
24
23
24
23
23
22
23
22
22
21

Dew Point (°C)

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

Relative Humidity (%)

44
40
39
38
37
46
57
71
74
79
84
87
89
92
92
91
91
92
91
90
89
86

Pressure (mb)

1010
1010
1010
1010
1009
1009
1009
1008
1009
1009
1009
1010
1011
1011
1011
1012
1012
1012
1012
1012
1012
1013

Ozone (du)

313
313
314
315
316
315
314
313
315
318
320
322
323
324
324
324
324
323
322
321
320
318

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

Generated: 28/07/26 10:42:09. Forecast: 28/07/26 to 03/08/26. Timezone: UTC+2.00