Clear Outside v1.0 - International Weather Forecasts For Astronomers

Thursday 30

Waning Gibbous 98%

22:00

07:55

09 OK
10 Bad
11 Bad
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad
17 Good
18 OK
19 OK
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: 06:06, Set: 21:28, Transit: 13:46. Moon - Rise: 22:00, Set: 07:55. Civil Dark: 22:08 - 05:26. Nautical Dark: 23:01 - 04:33. Astro Dark: 00:14 - 03:22

Total Clouds (% Sky Obscured)

22
23
64
72
100
100
100
100
17
30
32
63
77
100
77
90
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

0
0
0
0
54
3
60
0
8
16
17
24
29
28
14
13
9
2
11
18
70
78
68
51

Medium Clouds (% Sky Obscured)

3
23
57
72
100
96
81
72
3
0
0
0
0
0
0
1
14
26
71
100
80
94
88
57

High Clouds (% Sky Obscured)

5
23
64
72
100
100
100
100
0
7
6
41
48
100
69
83
100
100
100
100
99
99
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 (%)

1
41
33
10
3
19
10
4
0
0
0
0
0
0
0
0
0
0
0
1
2
3
14
5

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)

2
4
4
4
11
12
13
9
8
9
8
8
7
5
5
4
4
3
2
1
2
2
2
1

Chance of Frost

Temperature (°C)

26
27
28
29
28
27
26
26
28
29
29
28
26
23
22
21
20
19
19
19
18
18
19
20

Feels Like (°C)

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

Dew Point (°C)

7
6
6
7
7
10
15
17
13
12
10
8
8
13
14
14
13
13
13
14
13
12
12
11

Relative Humidity (%)

31
27
25
25
26
33
49
55
40
34
31
27
31
51
61
63
65
68
71
72
72
64
62
58

Pressure (mb)

1014
1014
1014
1014
1015
1016
1016
1016
1015
1015
1014
1014
1015
1016
1016
1016
1016
1016
1016
1015
1015
1015
1015
1016

Ozone (du)

311
310
308
308
309
310
314
319
334
323
320
316
315
317
317
317
317
319
320
320
320
319
321
323

Friday 31

Waning Gibbous 94%

22:14

No Set

09 Bad
10 Bad
11 Bad
12 Bad
13 Bad
14 Bad
15 Bad
16 OK
17 OK
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 OK

Sun - Rise: 06:07, Set: 21:27, Transit: 13:46. Moon - Rise: 22:14, Set: No Set. Civil Dark: 22:06 - 05:28. Nautical Dark: 22:59 - 04:36. Astro Dark: 00:11 - 03:26

Total Clouds (% Sky Obscured)

100
57
75
99
95
62
50
35
39
80
93
73
100
80
54
100
72
68
90
100
75
94
36
33

Low Clouds (% Sky Obscured)

18
0
26
29
18
24
10
13
3
0
21
25
21
18
17
15
15
16
15
17
21
23
23
23

Medium Clouds (% Sky Obscured)

54
57
73
96
90
46
29
17
20
23
13
0
5
11
0
0
0
0
57
74
25
12
1
2

High Clouds (% Sky Obscured)

100
55
56
93
85
7
0
3
2
50
87
58
100
62
40
100
66
57
67
100
73
89
6
6

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 (%)

1
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)

4
4
5
7
9
9
9
8
9
10
13
13
12
9
7
7
5
4
4
4
2
2
2
3

Chance of Frost

Temperature (°C)

21
23
25
26
27
28
29
29
30
30
28
25
22
21
19
18
16
15
14
14
13
13
14
15

Feels Like (°C)

21
22
24
25
25
25
27
29
28
27
23
21
19
18
18
17
15
16
15
13
13
14
14
17

Dew Point (°C)

11
11
11
10
9
8
8
8
6
6
9
12
14
14
14
14
14
13
13
12
12
12
12
11

Relative Humidity (%)

52
46
41
36
30
28
27
26
23
21
31
45
57
64
71
81
85
89
92
89
90
90
87
73

Pressure (mb)

1016
1016
1016
1015
1015
1015
1015
1014
1013
1013
1013
1014
1015
1016
1016
1017
1017
1017
1017
1017
1017
1017
1017
1018

Ozone (du)

325
326
328
328
330
333
331
331
331
329
328
327
327
327
327
325
325
325
324
324
325
323
324
325

Saturday 1

Waning Gibbous 88%

22:27

09:10

09 OK
10 Bad
11 Bad
12 Bad
13 OK
14 OK
15 Good
16 OK
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 OK
06 Bad
07 Bad
08 Bad

Sun - Rise: 06:09, Set: 21:25, Transit: 13:46. Moon - Rise: 22:27, Set: 09:10. Civil Dark: 22:05 - 05:30. Nautical Dark: 22:57 - 04:38. Astro Dark: 00:07 - 03:29

Total Clouds (% Sky Obscured)

33
80
80
53
31
28
12
33
71
73
100
100
100
99
99
100
100
94
83
49
48
90
79
65

Low Clouds (% Sky Obscured)

24
20
17
6
0
6
7
16
8
4
0
0
0
0
0
0
0
0
0
0
8
16
23
17

Medium Clouds (% Sky Obscured)

2
68
68
29
21
17
0
0
0
0
0
0
0
0
0
0
0
9
20
29
30
32
37
48

High Clouds (% Sky Obscured)

8
15
12
13
1
2
6
15
61
62
100
100
100
99
99
100
100
80
52
7
7
52
37
13

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

Chance of Frost

Temperature (°C)

17
19
21
23
24
25
26
27
27
26
26
25
22
20
17
16
15
15
14
13
13
13
14
16

Feels Like (°C)

18
19
20
21
23
24
25
25
25
25
25
21
17
16
15
14
13
12
12
12
12
12
12
14

Dew Point (°C)

10
9
8
5
4
3
2
1
1
0
-1
1
6
7
7
8
8
8
9
9
9
10
9
8

Relative Humidity (%)

60
51
42
32
26
23
20
18
18
17
17
21
35
43
50
58
59
66
70
75
76
78
71
58

Pressure (mb)

1018
1018
1018
1018
1018
1018
1017
1017
1017
1017
1017
1017
1018
1018
1018
1018
1019
1019
1018
1018
1018
1017
1017
1017

Ozone (du)

328
331
334
336
336
335
333
329
327
324
324
322
322
322
320
319
320
319
317
317
316
315
315
315

Sunday 2

Waning Gibbous 80%

22:39

10:24

09 OK
10 OK
11 OK
12 OK
13 OK
14 OK
15 OK
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: 06:10, Set: 21:24, Transit: 13:46. Moon - Rise: 22:39, Set: 10:24. Civil Dark: 22:03 - 05:31. Nautical Dark: 22:55 - 04:40. Astro Dark: 00:03 - 03:33

Total Clouds (% Sky Obscured)

41
32
30
25
20
35
46
56
61
67
72
73
73
73
65
70
56
62
62
51
59
67
80
80

Low Clouds (% Sky Obscured)

10
4
2
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

24
18
13
10
5
12
20
27
22
19
13
14
13
14
15
20
23
27
27
30
35
36
40
37

High Clouds (% Sky Obscured)

0
0
3
5
10
14
12
14
31
43
59
56
51
52
40
56
25
25
17
1
23
40
56
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
1
2
3
9
11
13
19

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

Chance of Frost

Temperature (°C)

19
22
24
26
28
29
30
30
31
31
30
29
26
24
22
21
20
20
19
18
17
17
18
20

Feels Like (°C)

17
20
22
24
26
27
28
28
28
28
26
25
23
20
19
19
17
17
16
16
16
17
17
19

Dew Point (°C)

7
6
6
5
4
3
2
1
2
1
2
3
4
5
5
8
8
8
9
9
10
11
11
10

Relative Humidity (%)

45
36
30
25
21
18
16
15
15
15
16
19
24
29
33
41
45
48
52
58
62
66
64
51

Pressure (mb)

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

Ozone (du)

316
315
314
314
314
315
313
311
311
310
310
309
309
310
311
313
314
314
317
319
320
319
318
317

Monday 3

Waning Gibbous 71%

22:52

11:41

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: 06:12, Set: 21:22, Transit: 13:46. Moon - Rise: 22:52, Set: 11:41. Civil Dark: 22:01 - 05:33. Nautical Dark: 22:52 - 04:42. Astro Dark: 23:59 - 03:36

Total Clouds (% Sky Obscured)

80
87
81
63
44
65
81
100
99
98
98
99
99
100
100
100
100
100
100
100
86
76
68
72

Low Clouds (% Sky Obscured)

0
0
0
0
1
1
0
0
7
14
20
14
7
0
4
7
9
9
7
6
4
4
3
4

Medium Clouds (% Sky Obscured)

35
32
25
63
44
55
45
34
43
50
55
45
28
14
16
22
30
32
34
37
27
17
6
4

High Clouds (% Sky Obscured)

56
61
81
63
44
62
76
100
99
97
97
98
99
100
100
100
100
100
100
100
77
57
40
41

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
Very Light Rain
Very Light Rain
None
None
None
None

Precipitation Probability (%)

22
21
20
18
15
28
29
28
42
49
53
44
33
11
21
23
21
47
59
67
52
34
2
3

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.2
0.3
0
0
0
0

Wind Speed/Direction (mph)

7
8
9
10
9
9
8
8
10
9
8
8
7
6
5
6
9
14
14
14
13
12
12
12

Chance of Frost

Temperature (°C)

23
26
29
31
33
34
34
35
35
33
31
29
27
26
24
24
23
23
22
22
21
21
21
21

Feels Like (°C)

21
24
27
29
31
32
32
32
32
32
33
33
26
26
26
24
22
21
20
20
18
18
18
18

Dew Point (°C)

9
9
9
10
10
10
9
8
7
9
11
13
14
15
16
15
14
12
12
13
13
13
13
13

Relative Humidity (%)

40
34
29
26
24
23
21
19
17
22
29
37
43
52
61
58
54
50
53
57
60
60
59
58

Pressure (mb)

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

Ozone (du)

317
317
316
314
313
312
312
311
310
310
309
309
308
307
307
308
308
309
311
313
315
316
318
319

Tuesday 4

Waning Gibbous 60%

23:07

13:00

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

Sun - Rise: 06:13, Set: 21:20, Transit: 13:46. Moon - Rise: 23:07, Set: 13:00. Civil Dark: 21:59 - 05:35. Nautical Dark: 22:50 - 04:44. Astro Dark: 23:56 - 03:40

Total Clouds (% Sky Obscured)

76
81
80
80
80
67
55
42
59
74
90
69
52
34
37
38
38
51
66
78
83
91
100
97

Low Clouds (% Sky Obscured)

4
5
4
6
5
9
14
21
45
73
90
67
35
3
4
10
11
35
29
38
39
37
48
62

Medium Clouds (% Sky Obscured)

2
0
15
29
47
45
40
35
46
54
65
46
25
7
3
2
3
25
46
68
67
66
66
44

High Clouds (% Sky Obscured)

46
61
53
44
35
24
16
4
2
1
1
1
0
0
0
0
1
1
1
1
5
12
18
18

ISS Passover

Visibility (miles)

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

Precipitation Probability (%)

2
0
0
0
0
0
1
1
7
10
9
19
19
8
12
14
15
22
29
32
39
45
50
49

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
0.2
0

Wind Speed/Direction (mph)

13
15
16
17
18
18
18
18
18
16
14
12
10
8
6
8
9
10
10
11
11
10
10
10

Chance of Frost

Temperature (°C)

23
24
26
27
28
29
30
30
31
29
28
26
24
23
21
20
20
19
19
18
18
18
18
17

Feels Like (°C)

19
20
21
21
21
22
27
27
26
27
29
29
21
22
22
22
22
22
18
18
19
18
18
18

Dew Point (°C)

12
10
9
9
8
8
8
7
7
10
13
15
15
14
14
14
15
16
16
16
16
16
16
16

Relative Humidity (%)

49
41
34
31
28
25
24
23
22
29
40
52
55
58
63
68
74
80
82
85
89
89
90
90

Pressure (mb)

1008
1008
1008
1008
1008
1008
1008
1007
1007
1007
1008
1008
1009
1009
1010
1010
1010
1011
1011
1011
1011
1012
1013
1013

Ozone (du)

321
322
324
325
327
328
329
330
330
331
332
332
330
328
326
324
322
320
318
317
315
313
312
310

Wednesday 5

Waning Gibbous 49%

23:26

14:22

Sun - Rise: 06:15, Set: 21:19, Transit: 13:46. Moon - Rise: 23:26, Set: 14:22. Civil Dark: 21:57 - 05:36. Nautical Dark: 22:48 - 04:46. Astro Dark: 23:52 - 03:43

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 Elst, Flemish Brabant, Kingdom of Belgium (50.77,4.89)

Generated: 30/07/26 09:59:45. Forecast: 30/07/26 to 05/08/26. Timezone: UTC+2.00