Clear Outside v1.0 - International Weather Forecasts For Astronomers

Thursday 28

Waxing Gibbous 94%

19:10

03:45

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

Sun - Rise: 05:35, Set: 21:40, Transit: 13:37. Moon - Rise: 19:10, Set: 03:45. Civil Dark: 22:23 - 04:52. Nautical Dark: 23:25 - 03:50. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

18
14
11
9
0
0
0
0
3
0
2
6
13
5
0
0
0
1
0
0
0
18
82
99

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
0
0
0
0
2
0
0
0
0
0
0
0
0
1
0
0
0
0
21
21

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
1
0
2
5
13
5
0
0
0
1
0
0
0
14
47
94

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

Chance of Frost

Temperature (°C)

19
17
16
15
13
12
12
13
14
16
18
21
22
24
25
26
26
26
26
26
24
22
20
18

Feels Like (°C)

19
17
15
14
13
12
11
12
14
15
18
21
23
24
26
27
28
27
27
28
26
24
21
19

Dew Point (°C)

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

Relative Humidity (%)

77
76
74
75
75
77
77
81
74
65
60
54
52
50
48
48
49
49
49
58
67
71
71
71

Pressure (mb)

1025
1025
1025
1025
1025
1025
1025
1025
1025
1025
1025
1025
1025
1025
1025
1024
1024
1023
1023
1023
1023
1023
1023
1024

Ozone (du)

325
326
329
331
334
335
337
338
339
339
337
337
336
337
338
338
338
337
335
336
337
338
340
338

Friday 29

Waxing Gibbous 97%

20:23

04:01

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

Sun - Rise: 05:34, Set: 21:41, Transit: 13:37. Moon - Rise: 20:23, Set: 04:01. Civil Dark: 22:24 - 04:50. Nautical Dark: 23:27 - 03:48. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

47
15
96
10
32
48
55
70
34
76
79
59
67
30
92
100
100
100
100
46
100
100
100
100

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
2
20
0
16
0
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

17
0
91
10
22
2
55
67
21
11
8
6
27
11
10
7
22
58
87
46
90
76
100
100

High Clouds (% Sky Obscured)

44
15
96
10
32
45
16
20
21
67
71
53
2
6
83
100
100
100
100
46
100
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
Very Light Rain
Very Light Rain
None
None
None
None
None
Very Light Rain
Light Rain

Precipitation Probability (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
9
49
43
43
12
57
39
13
62
66

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.3
0.3
0
0
0
0
0
0.3
0.4

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

18
17
16
16
15
15
15
17
20
23
25
27
28
29
30
31
29
28
29
28
27
25
22
21

Feels Like (°C)

17
16
14
14
14
13
15
16
19
23
26
28
28
29
30
30
29
29
30
31
28
27
24
22

Dew Point (°C)

12
11
9
9
9
9
11
13
15
17
18
19
20
20
21
21
20
20
22
23
24
24
21
21

Relative Humidity (%)

67
66
64
64
66
68
74
78
76
70
66
62
59
56
56
56
57
59
64
74
84
94
95
96

Pressure (mb)

1024
1024
1023
1022
1022
1022
1022
1022
1022
1023
1023
1023
1023
1022
1022
1022
1022
1022
1022
1021
1021
1021
1022
1022

Ozone (du)

337
336
335
334
335
335
335
337
338
336
334
331
329
327
326
326
324
324
323
322
320
322
323
325

Saturday 30

Waxing Gibbous 98%

21:33

04:23

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
14 Bad
15 OK
16 Bad
17 Bad
18 Bad
19 Bad
20 Bad
21 Bad
22 Bad
23 Bad

Sun - Rise: 05:33, Set: 21:42, Transit: 13:38. Moon - Rise: 21:33, Set: 04:23. Civil Dark: 22:26 - 04:49. Nautical Dark: 23:29 - 03:46. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

100
97
92
95
91
95
96
99
96
92
98
100
100
74
55
45
49
100
100
100
100
96
100
100

Low Clouds (% Sky Obscured)

2
1
14
9
29
50
66
40
36
62
29
13
6
8
13
0
11
21
19
72
48
24
0
5

Medium Clouds (% Sky Obscured)

100
71
76
80
64
31
54
61
61
31
53
45
22
18
15
11
10
7
13
38
53
63
43
94

High Clouds (% Sky Obscured)

100
88
43
59
75
90
95
98
79
78
97
100
99
57
34
30
30
100
99
100
99
85
100
100

ISS Passover

Visibility (miles)

5
7
7
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
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Type

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

Precipitation Probability (%)

91
81
37
14
6
6
74
78
26
16
7
0
0
0
0
1
7
0
1
95
79
80
69
84

Precipitation Amount (mm)

0.9
0.6
0
0
0
0
0.8
0.5
0
0
0
0
0
0
0
0
0
0
0
1.5
0.6
0.5
0.2
0.4

Wind Speed/Direction (mph)

6
3
3
3
1
3
4
5
4
4
3
5
5
4
5
5
4
3
3
3
7
5
4
5

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

93
95
96
93
92
92
92
92
88
82
76
66
60
55
52
50
50
49
50
52
62
64
66
72

Pressure (mb)

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

Ozone (du)

331
337
341
342
342
342
340
337
334
333
334
334
334
333
333
334
335
335
336
336
335
334
334
333

Sunday 31

Full Moon 100%

22:38

04:52

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

Sun - Rise: 05:32, Set: 21:43, Transit: 13:38. Moon - Rise: 22:38, Set: 04:52. Civil Dark: 22:27 - 04:48. Nautical Dark: 23:30 - 03:45. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

100
100
100
100
100
95
93
90
85
77
75
75
76
76
85
92
100
97
94
91
90
61
51
71

Low Clouds (% Sky Obscured)

11
21
46
57
78
81
82
73
69
66
58
55
52
49
47
45
43
51
60
68
64
61
51
39

Medium Clouds (% Sky Obscured)

99
100
95
90
86
69
87
49
13
8
7
9
11
12
62
59
99
96
68
88
66
27
31
31

High Clouds (% Sky Obscured)

97
100
100
100
100
51
44
30
20
0
3
10
10
15
43
72
100
67
33
0
0
0
0
0

ISS Passover

Visibility (miles)

3
9
5
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

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

Precipitation Probability (%)

80
86
91
70
61
63
57
16
17
27
53
50
32
13
12
10
8
25
35
30
30
21
19
22

Precipitation Amount (mm)

0.4
0.5
0.7
0.3
0
0.2
0
0
0
0
0.3
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

3
5
5
2
4
7
6
6
8
9
9
12
12
14
15
15
14
13
12
9
10
9
7
8

Chance of Frost

Temperature (°C)

19
18
18
18
18
18
17
18
18
19
19
19
20
21
21
21
21
21
20
19
19
17
15
14

Feels Like (°C)

18
18
18
19
18
17
17
18
18
18
19
18
18
18
18
17
18
18
18
18
17
15
15
14

Dew Point (°C)

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

Relative Humidity (%)

81
88
92
93
90
92
93
95
92
86
82
82
81
63
54
49
50
58
69
70
71
81
87
90

Pressure (mb)

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

Ozone (du)

331
330
335
338
339
338
345
353
359
372
363
357
353
351
353
352
350
353
356
356
358
361
364
358

Monday 1

Waning Gibbous 100%

23:33

05:31

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

Sun - Rise: 05:32, Set: 21:44, Transit: 13:38. Moon - Rise: 23:33, Set: 05:31. Civil Dark: 22:28 - 04:47. Nautical Dark: 23:32 - 03:44. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

40
76
50
51
60
71
85
81
92
78
85
100
100
100
100
100
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

19
9
10
17
27
38
51
54
51
52
53
60
59
64
69
74
80
84
90
95
97
98
100
97

Medium Clouds (% Sky Obscured)

34
31
39
36
35
30
29
24
26
30
32
32
36
35
51
68
84
88
92
95
96
98
100
100

High Clouds (% Sky Obscured)

0
0
17
33
49
34
17
0
33
67
85
100
100
100
100
100
100
100
100
100
100
100
100
75

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
6
5
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

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

Precipitation Probability (%)

9
5
5
2
0
0
0
0
0
1
10
16
9
7
17
25
22
26
33
46
61
73
83
95

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.2
0.4
0.4
0.7

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

12
12
11
10
11
10
10
10
11
12
14
15
15
15
16
16
16
16
16
16
15
13
13
14

Dew Point (°C)

12
12
12
11
11
11
11
11
12
12
11
11
10
10
10
11
11
12
13
14
14
14
14
14

Relative Humidity (%)

90
93
93
96
96
96
96
95
89
82
72
64
59
56
55
58
62
66
74
82
90
93
95
96

Pressure (mb)

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

Ozone (du)

356
355
355
353
351
349
348
347
346
346
347
348
348
346
345
345
345
344
346
347
349
351
353
355

Tuesday 2

Waning Gibbous 97%

No Rise

06:22

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

Sun - Rise: 05:31, Set: 21:45, Transit: 13:38. Moon - Rise: No Rise, Set: 06:22. Civil Dark: 22:29 - 04:47. Nautical Dark: 23:34 - 03:42. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
100
99
98
98
94
91
87
88
88
89
84
80
79
85

Low Clouds (% Sky Obscured)

95
93
96
97
99
97
95
92
85
78
71
73
75
76
66
55
45
43
42
41
49
52
54
65

Medium Clouds (% Sky Obscured)

100
100
95
91
86
91
95
100
90
80
70
51
31
12
21
14
15
20
26
28
51
74
79
79

High Clouds (% Sky Obscured)

50
34
27
30
33
65
84
100
87
75
62
47
28
13
14
9
8
15
19
23
19
20
24
18

ISS Passover

Visibility (miles)

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

Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Very Light Rain
Very Light Rain
Very Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain

Precipitation Probability (%)

95
95
95
95
95
95
95
95
95
87
74
82
85
78
74
75
81
91
95
95
95
95
95
83

Precipitation Amount (mm)

0.9
0.9
0.8
0.8
0.7
1.1
1.1
1
0.8
0.6
0.4
0.5
0.5
0.3
0.3
0.3
0.4
0.6
0.7
0.7
0.7
0.7
0.7
0.6

Wind Speed/Direction (mph)

10
12
13
13
13
13
13
13
13
13
13
14
14
15
15
15
15
15
14
13
12
12
11
11

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

14
14
14
14
13
13
13
13
13
13
12
12
12
12
13
13
13
13
13
13
14
12
13
13

Dew Point (°C)

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

Relative Humidity (%)

96
96
95
95
95
95
93
93
92
89
85
81
79
78
75
77
78
79
82
86
89
90
93
95

Pressure (mb)

1011
1010
1009
1009
1008
1008
1007
1007
1007
1007
1007
1007
1007
1007
1007
1007
1007
1007
1007
1007
1007
1007
1008
1008

Ozone (du)

360
364
368
369
369
369
370
371
372
377
382
388
393
399
405
404
403
403
399
394
390
386
381
376

Wednesday 3

Waning Gibbous 93%

00:16

07:24

Sun - Rise: 05:30, Set: 21:46, Transit: 13:38. Moon - Rise: 00:16, Set: 07:24. Civil Dark: 22:31 - 04:46. Nautical Dark: 23:36 - 03:41. Astro Dark: N/A - N/A

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: 28/05/26 00:18:29. Forecast: 28/05/26 to 03/06/26. Timezone: UTC+2.00