Clear Outside v1.0 - International Weather Forecasts For Astronomers

Monday 27

Waxing Gibbous 86%

16:26

04:59

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 Good
22 Good
23 Bad
00 Bad
01 Bad
02 Bad
03 Bad
04 Bad
05 Bad
06 Bad

Sun - Rise: 06:18, Set: 20:55, Transit: 13:38. Moon - Rise: 16:26, Set: 04:59. Civil Dark: 21:32 - 05:41. Nautical Dark: 22:18 - 04:54. Astro Dark: 23:14 - 03:58

Total Clouds (% Sky Obscured)

88
88
94
96
100
94
94
100
100
100
100
100
100
100
6
18
100
100
100
100
86
64
76
65

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)

83
84
86
92
100
73
63
79
80
79
53
20
20
24
1
18
14
43
59
81
86
64
76
65

High Clouds (% Sky Obscured)

70
88
46
14
100
75
78
100
100
87
100
100
100
100
5
12
100
100
100
100
60
36
56
30

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 (%)

5
4
5
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)

2
3
4
5
7
8
8
8
8
8
8
8
8
7
7
7
7
7
7
7
8
8
8
8

Chance of Frost

Temperature (°C)

6
7
8
10
12
13
15
17
17
17
18
17
17
16
13
12
10
9
8
8
7
7
7
6

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

71
71
67
61
58
54
50
46
43
42
42
47
58
65
66
72
76
76
73
69
70
69
67
70

Pressure (mb)

1024
1024
1024
1024
1024
1024
1023
1022
1022
1021
1021
1020
1020
1020
1020
1021
1021
1021
1020
1020
1020
1020
1020
1020

Ozone (du)

368
367
370
372
375
376
378
379
381
383
384
384
386
393
401
404
402
403
405
409
410
411
412
412

Tuesday 28

Waxing Gibbous 92%

17:40

05:11

07 Bad
08 Bad
09 Bad
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 Good
23 Good
00 Good
01 Good
02 Good
03 Good
04 Good
05 Good
06 Good

Sun - Rise: 06:16, Set: 20:56, Transit: 13:37. Moon - Rise: 17:40, Set: 05:11. Civil Dark: 21:33 - 05:39. Nautical Dark: 22:21 - 04:52. Astro Dark: 23:17 - 03:54

Total Clouds (% Sky Obscured)

78
84
50
12
5
1
1
0
0
0
4
0
0
0
0
0
0
0
0
0
0
0
0
0

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
4
0
0
0
0
0
0
0
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

77
80
50
12
2
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

35
57
23
5
4
0
0
0
0
0
0
0
0
0
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)

8
9
11
12
14
15
17
17
17
17
16
16
16
16
15
14
13
12
12
12
13
12
12
13

Chance of Frost

Temperature (°C)

6
7
8
11
13
15
17
18
19
19
20
19
18
17
15
13
12
11
10
9
8
8
7
7

Feels Like (°C)

3
3
4
6
8
12
13
15
15
16
16
17
15
13
10
10
9
9
7
6
5
5
4
3

Dew Point (°C)

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

Relative Humidity (%)

76
75
70
66
60
55
51
48
46
44
48
51
56
61
57
61
67
68
66
66
65
64
63
60

Pressure (mb)

1020
1020
1020
1021
1020
1020
1020
1020
1020
1019
1019
1019
1019
1020
1020
1021
1022
1022
1022
1022
1023
1023
1023
1023

Ozone (du)

413
416
418
417
414
413
412
413
413
410
408
405
402
400
401
401
400
402
402
400
396
394
391
390

Wednesday 29

Waxing Gibbous 97%

18:53

05:23

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 Good
23 Good
00 Good
01 Good
02 Good
03 Good
04 Good
05 Good
06 Good

Sun - Rise: 06:15, Set: 20:58, Transit: 13:37. Moon - Rise: 18:53, Set: 05:23. Civil Dark: 21:35 - 05:37. Nautical Dark: 22:23 - 04:49. Astro Dark: 23:20 - 03:51

Total Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
0
1
1
1
0
1
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
1
1
1
1
1
1
1
0
1
1
1
0
1
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)

13
13
14
16
17
17
19
19
19
18
18
17
16
14
12
12
12
13
12
11
10
9
9
9

Chance of Frost

Temperature (°C)

6
7
9
11
13
15
16
17
18
18
18
18
18
17
14
12
11
10
9
8
7
7
6
6

Feels Like (°C)

2
3
5
6
8
10
11
12
13
14
14
14
14
13
10
9
8
7
6
5
5
4
3
3

Dew Point (°C)

-1
0
1
1
2
3
3
3
4
5
7
7
7
7
4
2
2
2
1
1
1
1
-1
-1

Relative Humidity (%)

60
61
59
52
49
44
40
39
38
42
46
47
49
53
49
49
51
54
57
61
63
65
65
62

Pressure (mb)

1023
1024
1024
1024
1024
1024
1024
1024
1023
1023
1023
1023
1023
1023
1024
1024
1025
1025
1025
1025
1025
1026
1026
1026

Ozone (du)

392
392
391
390
390
390
390
390
389
388
389
388
386
384
383
383
383
382
381
381
380
380
380
380

Thursday 30

Waxing Gibbous 99%

20:07

05:38

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 Good
23 Good
00 Good
01 Good
02 Good
03 Good
04 Good
05 Good
06 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)

0
0
0
0
0
1
0
0
0
0
0
0
0
0
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
1
0
0
0
0
0
0
0
0
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)

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

Chance of Frost

Temperature (°C)

6
6
8
11
13
15
16
18
18
19
19
19
18
17
14
13
11
10
10
9
8
8
8
8

Feels Like (°C)

3
4
5
6
8
10
12
14
14
15
17
17
16
16
13
11
9
8
7
7
7
6
6
6

Dew Point (°C)

-1
-1
-2
-2
-2
-1
-1
0
1
2
6
6
8
9
7
4
2
2
1
1
1
1
1
1

Relative Humidity (%)

62
61
50
41
36
34
31
30
31
33
41
44
51
62
61
57
54
56
55
56
59
61
62
62

Pressure (mb)

1026
1026
1026
1026
1026
1026
1025
1025
1024
1024
1024
1023
1023
1023
1024
1024
1024
1024
1024
1024
1024
1024
1024
1024

Ozone (du)

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

Friday 1

Full Moon 100%

21:21

05:56

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 Good
23 Good
00 Good
01 Good
02 Good
03 Good
04 Good
05 OK
06 OK

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
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
3
6
9
29
46

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
2
4

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
3
5
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)

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

Chance of Frost

Temperature (°C)

8
9
12
15
17
18
20
21
22
22
23
22
21
19
18
16
14
13
12
12
11
11
11
12

Feels Like (°C)

6
9
11
12
15
16
18
20
21
22
23
23
23
20
19
18
17
17
16
15
11
11
11
11

Dew Point (°C)

2
4
5
5
6
7
7
8
8
9
9
10
13
12
11
9
7
7
7
7
6
7
6
7

Relative Humidity (%)

65
67
59
52
48
46
44
43
41
42
42
44
57
64
63
64
63
66
69
71
71
73
73
73

Pressure (mb)

1024
1024
1024
1024
1024
1023
1023
1022
1022
1021
1021
1020
1020
1020
1020
1020
1020
1020
1020
1020
1019
1019
1019
1019

Ozone (du)

380
380
381
382
383
382
379
377
377
376
375
375
374
374
375
376
377
377
377
377
376
376
375
375

Saturday 2

Waning Gibbous 98%

22:34

06:19

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

58
50
43
39
47
46
45
40
35
26
42
58
63
68
77
85
90
95
100
96
91
87
85
84

Low Clouds (% Sky Obscured)

0
4
7
10
10
7
4
4
4
5
9
13
16
12
8
1
23
41
52
53
53
54
62
68

Medium Clouds (% Sky Obscured)

4
3
3
2
1
1
1
4
7
10
10
5
5
20
34
49
67
83
97
92
87
81
85
84

High Clouds (% Sky Obscured)

8
5
13
8
35
46
45
40
35
26
42
58
62
68
77
82
72
75
74
83
84
84
76
62

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
7
5
3
5

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

Precipitation Probability (%)

0
0
0
0
0
2
4
17
21
20
23
29
27
56
68
69
58
47
39
47
52
53
57
62

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

12
13
15
17
19
20
22
23
23
23
23
22
21
19
18
17
15
15
15
14
14
14
13
13

Feels Like (°C)

11
10
12
13
14
15
16
17
24
24
23
24
24
25
19
19
18
17
17
16
13
12
12
12

Dew Point (°C)

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

Relative Humidity (%)

73
74
68
62
56
55
52
49
48
45
42
52
63
75
76
79
82
82
84
86
89
92
95
95

Pressure (mb)

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

Ozone (du)

375
375
375
374
374
373
373
373
372
372
371
371
371
371
372
372
373
373
373
373
372
372
371
374

Sunday 3

Waning Gibbous 95%

23:44

06:51

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
00 Bad
01 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)

83
90
95
100
99
99
98
98
99
100
99
98
97
94
91
87
69
52
17

Low Clouds (% Sky Obscured)

65
75
85
96
86
76
68
57
45
34
46
58
71
66
65
57
53
52
17

Medium Clouds (% Sky Obscured)

83
87
77
64
48
34
29
39
56
68
62
47
28
18
23
28
22
16
10

High Clouds (% Sky Obscured)

63
74
85
96
88
80
71
92
99
100
94
89
83
83
83
87
69
52
17

ISS Passover

Visibility (miles)

7
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

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

Precipitation Probability (%)

68
61
51
34
28
22
19
24
27
25
22
24
29
37
42
39
41
40
34

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

95
95
92
89
87
83
82
79
74
68
64
69
75
82
86
89
93
93
93

Pressure (mb)

1014
1014
1014
1014
1014
1014
1014
1014
1014
1013
1013
1013
1013
1013
1013
1014
1014
1014
1014

Ozone (du)

378
381
380
379
378
378
378
378
377
376
375
375
374
374
376
379
381
380
380

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

Generated: 27/04/26 07:44:09. Forecast: 27/04/26 to 03/05/26. Timezone: UTC+2.00