Clear Outside v1.0 - International Weather Forecasts For Astronomers

Thursday 30

Waxing Gibbous 99%

20:07

05:38

20 Bad
21 OK
22 OK
23 OK
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

Sun - Rise: 06:13, Set: 21:00, Transit: 13:37. Moon - Rise: 20:07, Set: 05:38. Civil Dark: 21:37 - 05:35. Nautical Dark: 22:25 - 04:47. Astro Dark: 23:23 - 03:48

Total Clouds (% Sky Obscured)

44
34
26
21
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0

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
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
1
0
0
0
0
0
0
0
0
0
0

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)

14
11
10
8
7
6
6
6
6
6
6
5
5
7
10
11
11
11
11
10
10
10
8
7

Chance of Frost

Temperature (°C)

19
16
14
13
11
10
9
9
8
7
7
7
9
11
14
17
19
21
22
23
24
24
24
23

Feels Like (°C)

17
14
12
11
9
8
7
6
6
5
5
6
8
9
11
14
16
18
19
21
21
22
23
23

Dew Point (°C)

10
8
6
4
2
1
-1
-1
-2
-2
-2
-1
2
2
2
4
6
7
8
9
9
10
13
14

Relative Humidity (%)

58
60
56
54
52
51
50
51
51
53
55
58
61
52
45
44
43
41
39
40
40
43
50
56

Pressure (mb)

1023
1024
1025
1025
1025
1025
1025
1025
1025
1025
1025
1025
1025
1025
1025
1025
1024
1024
1023
1023
1022
1022
1022
1021

Ozone (du)

380
380
380
380
380
380
379
379
379
378
378
378
377
376
376
376
376
376
376
376
377
377
377
378

Friday 1

Full Moon 100%

21:21

05:56

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

Sun - Rise: 06:11, Set: 21:01, Transit: 13:37. Moon - Rise: 21:21, Set: 05:56. Civil Dark: 21:39 - 05:33. Nautical Dark: 22:27 - 04:45. Astro Dark: 23:26 - 03:44

Total Clouds (% Sky Obscured)

0
0
0
0
41
94
100
100
100
100
100
100
99
75
100
100
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
5
0
0
0
0
21
43
52
72
46
30
32
38
0

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
18
32
28
28
85
81
42
16
3
13
3
16
48
65
55
65
72

High Clouds (% Sky Obscured)

0
0
0
0
36
89
91
100
100
100
100
100
97
73
100
97
100
100
100
100
100
100
100
100

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
6
9
9
9
9
9
9
9
5
9
9
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

None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
Light Rain
None

Precipitation Probability (%)

0
0
0
0
0
0
0
0
1
4
6
3
1
0
0
4
22
22
44
38
27
54
78
46

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
0.5
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

22
19
16
15
14
13
13
13
13
13
13
13
14
17
19
21
22
23
24
24
23
23
22
20

Feels Like (°C)

21
18
15
13
13
12
12
11
10
10
10
11
12
14
17
19
21
22
22
22
22
22
21
20

Dew Point (°C)

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

Relative Humidity (%)

65
64
63
66
71
75
74
71
68
68
68
72
74
69
68
65
63
61
57
58
56
53
58
71

Pressure (mb)

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

Ozone (du)

380
381
381
380
379
378
377
376
377
376
370
368
368
367
365
366
366
365
364
363
363
363
362
364

Saturday 2

Waning Gibbous 98%

22:34

06:19

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
14 Bad
15 Bad
16 Bad
17 Bad
18 Bad
19 Bad

Sun - Rise: 06:09, Set: 21:03, Transit: 13:37. Moon - Rise: 22:34, Set: 06:19. Civil Dark: 21:40 - 05:31. Nautical Dark: 22:29 - 04:42. Astro Dark: 23:29 - 03:41

Total Clouds (% Sky Obscured)

90
79
100
100
100
100
100
100
100
100
89
100
96
100
100
100
100
100
100
97
100
100
98
100

Low Clouds (% Sky Obscured)

6
0
0
0
0
0
0
0
0
2
4
5
5
83
34
59
49
63
62
57
59
48
38
28

Medium Clouds (% Sky Obscured)

77
55
72
62
70
74
85
92
67
91
70
87
49
100
100
100
79
88
25
24
25
25
25
25

High Clouds (% Sky Obscured)

35
63
100
100
100
100
100
100
100
100
79
100
59
100
100
100
100
100
99
80
75
75
92
100

ISS Passover

Visibility (miles)

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

Fog (%)

0
0
0
0
2
2
1
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
Very Light Rain
Very Light Rain
Very Light Rain
None
None
None
None

Precipitation Probability (%)

9
8
9
6
5
5
4
12
28
13
7
22
35
51
46
32
53
66
65
63
51
45
39
34

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

5
5
5
6
6
6
6
7
9
10
9
11
13
14
15
13
15
16
16
15
15
14
12
11

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

78
82
83
86
89
87
89
86
86
83
84
83
79
81
83
87
86
79
78
74
68
71
71
71

Pressure (mb)

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

Ozone (du)

363
363
364
363
364
364
365
365
364
364
365
366
366
368
369
372
379
381
389
387
384
385
383
381

Sunday 3

Waning Gibbous 95%

23:44

06:51

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
14 Bad
15 Bad
16 Bad
17 Bad
18 Bad
19 Bad

Sun - Rise: 06:07, Set: 21:04, Transit: 13:37. Moon - Rise: 23:44, Set: 06:51. Civil Dark: 21:42 - 05:29. Nautical Dark: 22:31 - 04:40. Astro Dark: 23:32 - 03:38

Total Clouds (% Sky Obscured)

100
100
100
91
82
73
78
82
89
86
82
79
81
83
84
82
81
78
77
77
79
76
75
73

Low Clouds (% Sky Obscured)

28
27
28
37
42
49
57
68
79
73
66
59
58
58
57
57
57
56
49
41
34
35
35
43

Medium Clouds (% Sky Obscured)

31
62
96
57
82
36
73
69
61
69
80
79
80
79
84
81
75
76
77
77
77
75
64
70

High Clouds (% Sky Obscured)

100
100
100
77
53
30
2
2
4
2
1
0
0
0
0
0
0
0
0
0
5
5
5
10

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
6
5
5
2
8
6
5
7
9
9
7
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
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Very Light Rain
None
Very Light Rain
Light Rain
None
None
None
Very Light Rain

Precipitation Probability (%)

34
29
1
5
9
10
16
18
34
68
86
88
94
73
82
86
74
64
89
95
70
62
55
52

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0.4
0.6
0.7
1.1
0.4
0.7
0.6
0.3
0
0.3
0.6
0
0
0
0.2

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

75
83
83
86
90
90
93
93
93
93
95
95
96
96
96
93
96
95
92
89
92
89
85
89

Pressure (mb)

1011
1011
1012
1012
1012
1012
1012
1012
1011
1011
1012
1012
1012
1012
1012
1013
1012
1012
1012
1012
1012
1012
1012
1012

Ozone (du)

378
377
377
377
378
376
374
374
374
373
373
374
372
372
371
371
369
369
368
368
368
369
369
371

Monday 4

Waning Gibbous 90%

00:46

07:33

20 Bad
21 Bad
22 Bad
23 Bad
00 Bad
01 Bad
02 Bad
03 Bad
04 OK
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

Sun - Rise: 06:06, Set: 21:06, Transit: 13:37. Moon - Rise: 00:46, Set: 07:33. Civil Dark: 21:44 - 05:27. Nautical Dark: 22:34 - 04:37. Astro Dark: 23:36 - 03:34

Total Clouds (% Sky Obscured)

73
44
48
65
62
67
59
48
40
70
80
85
73
80
88
84
79
73
80
87
94
96
96
97

Low Clouds (% Sky Obscured)

44
38
39
41
35
31
33
33
33
33
34
30
32
41
49
43
38
31
47
63
78
65
55
44

Medium Clouds (% Sky Obscured)

41
15
13
11
6
4
3
1
0
0
0
0
0
0
0
2
4
3
1
5
9
39
65
93

High Clouds (% Sky Obscured)

0
0
1
33
62
67
59
41
12
30
48
65
0
0
0
0
0
0
0
0
23
31
42
63

ISS Passover

Visibility (miles)

8
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
Very Light Rain
None

Precipitation Probability (%)

32
15
0
0
0
0
0
0
0
0
0
0
2
2
1
12
17
20
28
36
44
57
60
55

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.2
0.2
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

14
13
12
11
11
10
9
8
8
8
7
8
10
11
13
15
16
17
18
18
18
17
17
16

Feels Like (°C)

14
13
13
11
11
10
10
9
9
8
7
8
9
10
11
11
12
12
13
17
17
16
16
17

Dew Point (°C)

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

Relative Humidity (%)

89
90
90
91
91
91
93
95
95
94
94
95
91
87
80
75
68
63
57
55
55
55
60
65

Pressure (mb)

1012
1012
1013
1013
1013
1013
1013
1013
1013
1013
1013
1013
1013
1013
1013
1013
1012
1012
1012
1011
1011
1011
1011
1011

Ozone (du)

373
374
374
376
378
377
377
378
378
378
378
378
377
378
379
379
379
379
379
379
378
378
377
377

Tuesday 5

Waning Gibbous 83%

01:38

08:28

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
14 Bad
15 Bad
16 Bad
17 Bad
18 Bad
19 Bad

Sun - Rise: 06:04, Set: 21:07, Transit: 13:37. Moon - Rise: 01:38, Set: 08:28. Civil Dark: 21:46 - 05:26. Nautical Dark: 22:36 - 04:35. Astro Dark: 23:39 - 03:31

Total Clouds (% Sky Obscured)

97
97
98
86
80
74
79
83
89
88
90
96
91
86
81
79
77
75
81
89
93
90
88
85

Low Clouds (% Sky Obscured)

54
63
73
82
80
74
79
83
89
69
56
48
46
54
62
63
60
56
68
79
91
87
81
67

Medium Clouds (% Sky Obscured)

95
97
98
86
80
74
79
71
61
70
80
89
62
34
6
16
25
29
28
24
19
10
7
5

High Clouds (% Sky Obscured)

43
36
10
5
10
20
40
40
30
32
32
28
23
22
26
31
19
5
5
5
6
4
3
2

ISS Passover

Visibility (miles)

8
6
4
2
3
5
6
6
7
7
8
9
9
9
9
8
7
6
5
6
8
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
Light Rain
Light Rain
Light Rain
Very Light Rain
None
None
None
None
None
None
Very Light Rain
Light Rain
Light Rain
Light Rain
Very Light Rain
None
None
None
None

Precipitation Probability (%)

70
81
90
88
87
91
81
71
60
53
45
30
46
51
50
67
78
85
75
59
47
43
40
37

Precipitation Amount (mm)

0.3
0.5
0.6
0.6
0.6
0.6
0.5
0.4
0.3
0
0
0
0
0
0
0.3
0.5
0.6
0.4
0.2
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

15
14
13
12
12
11
11
11
10
10
10
10
9
10
11
12
12
13
12
12
12
12
12
11

Feels Like (°C)

17
13
13
13
12
12
11
10
10
9
9
9
9
7
7
7
8
8
8
11
10
10
10
10

Dew Point (°C)

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

Relative Humidity (%)

70
78
86
95
96
96
96
95
95
93
93
93
93
84
77
72
70
67
64
66
69
70
72
75

Pressure (mb)

1011
1011
1011
1012
1012
1012
1012
1011
1011
1011
1011
1011
1011
1011
1011
1011
1011
1011
1011
1011
1012
1012
1012
1012

Ozone (du)

377
381
385
388
391
393
396
395
394
392
393
394
394
396
398
399
400
400
401
398
396
394
392
389

Wednesday 6

Waning Gibbous 75%

02:17

09:33

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: 06:02, Set: 21:09, Transit: 13:36. Moon - Rise: 02:17, Set: 09:33. Civil Dark: 21:47 - 05:24. Nautical Dark: 22:38 - 04:33. Astro Dark: 23:42 - 03:27

Total Clouds (% Sky Obscured)

75
64
53
61
68
76
58
44
30
33
36
44
60
74
85
87
87
93

Low Clouds (% Sky Obscured)

61
55
48
44
39
39
36
28
25
18
12
6
18
29
44
42
38
40

Medium Clouds (% Sky Obscured)

4
5
6
17
28
40
34
24
12
15
20
22
23
23
23
24
25
27

High Clouds (% Sky Obscured)

4
7
9
15
23
30
22
27
30
33
36
44
60
74
49
41
30
24

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
8
8
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
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

33
27
18
20
22
24
28
26
18
14
9
1
16
21
25
34
42
45

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

10
8
8
7
7
7
7
5
4
3
4
4
4
4
4
5
5
6

Dew Point (°C)

7
6
7
6
6
7
6
6
6
5
5
5
5
6
7
7
7
7

Relative Humidity (%)

77
81
87
90
91
93
94
94
93
91
91
91
91
90
88
84
80
75

Pressure (mb)

1012
1013
1014
1014
1014
1015
1015
1015
1016
1016
1016
1017
1017
1017
1017
1018
1017
1017

Ozone (du)

387
387
388
388
387
387
386
387
387
388
386
384
383
381
380
379
378
377

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

Generated: 30/04/26 20:13:41. Forecast: 30/04/26 to 06/05/26. Timezone: UTC+2.00