Clear Outside v1.0 - International Weather Forecasts For Astronomers

Monday 27

Waxing Gibbous 86%

17:40

04:59

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

Sun - Rise: 06:18, Set: 20:56, Transit: 13:37. Moon - Rise: 17:40, Set: 04:59. Civil Dark: 21:33 - 05:41. Nautical Dark: 22:18 - 04:54. Astro Dark: 23:14 - 03:58

Total Clouds (% Sky Obscured)

88
90
91
92
100
100
92
94
56
71
40
73
75
77
83
89
90
76
39
32
69
34
41
0

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
2
0
0
0
0
0
0
0
0
0
0
0
0
0
7
0
0
0

Medium Clouds (% Sky Obscured)

88
90
91
92
100
100
92
94
56
71
40
73
74
71
75
78
67
56
28
26
51
25
24
0

High Clouds (% Sky Obscured)

3
81
91
92
100
96
10
10
10
10
15
20
25
16
4
8
15
14
4
1
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 (%)

6
2
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
5
6
7
8
8
8
8
8
8
9
11
12
13
15
16
16
16
16
16
15
15
15
15

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

71
73
75
71
68
70
72
70
71
74
77
70
66
60
54
53
50
48
46
49
52
57
62
58

Pressure (mb)

1021
1021
1021
1020
1020
1020
1020
1020
1020
1020
1020
1020
1020
1020
1020
1020
1020
1019
1019
1019
1019
1019
1019
1020

Ozone (du)

404
401
401
402
406
408
411
413
414
414
414
416
417
418
418
417
416
416
414
411
409
407
405
403

Tuesday 28

Waxing Gibbous 92%

18:53

05:11

22 Good
23 Good
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

Sun - Rise: 06:16, Set: 20:58, Transit: 13:37. Moon - Rise: 18:53, Set: 05:11. Civil Dark: 21:35 - 05:39. Nautical Dark: 22:21 - 04:52. Astro Dark: 23:17 - 03:54

Total Clouds (% Sky Obscured)

0
0
0
3
1
3
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1

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
3
1
3
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

61
66
67
63
62
60
55
53
53
55
57
56
49
46
43
40
39
38
43
44
46
47
50
47

Pressure (mb)

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

Ozone (du)

399
397
395
395
397
400
402
404
402
400
398
396
396
396
396
395
395
394
393
391
388
386
385
384

Wednesday 29

Waxing Gibbous 97%

20:07

05:23

22 Good
23 Good
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

Sun - Rise: 06:15, Set: 21:00, Transit: 13:37. Moon - Rise: 20:07, Set: 05:23. Civil Dark: 21:37 - 05:37. Nautical Dark: 22:23 - 04:49. Astro Dark: 23:20 - 03:51

Total Clouds (% Sky Obscured)

1
1
0
0
1
0
1
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)

1
1
0
0
0
0
1
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

1
1
1
-0
-1
-1
-1
-2
-3
-3
-2
-2
-3
-2
-1
1
1
2
4
7
7
8
10
8

Relative Humidity (%)

46
49
51
52
54
54
56
55
52
54
54
48
39
35
33
32
31
31
35
41
44
50
60
61

Pressure (mb)

1025
1026
1026
1026
1026
1026
1026
1026
1026
1026
1026
1026
1026
1026
1025
1025
1024
1024
1023
1022
1022
1022
1022
1023

Ozone (du)

384
383
381
379
378
377
377
377
376
376
375
375
375
374
374
375
376
377
377
377
377
377
377
377

Thursday 30

Waxing Gibbous 99%

21:21

05:38

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

Sun - Rise: 06:13, Set: 21:01, Transit: 13:37. Moon - Rise: 21:21, Set: 05:38. Civil Dark: 21:39 - 05:35. Nautical Dark: 22:25 - 04:47. Astro Dark: 23:23 - 03:48

Total Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
7
13
20
23
27
31
48
63
81
80
75
75
75
70

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
7
13
20
15
7
0
12
24
36
35
35
35
23
12

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
3
7
10
15
22
22
25
32
30
29
32

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
33
63
81
80
75
75
75
70

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
1
13
22

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

Chance of Frost

Temperature (°C)

13
11
10
9
8
8
7
7
8
9
10
12
15
17
18
20
22
22
22
22
21
20
18
16

Feels Like (°C)

11
9
8
7
6
6
5
5
6
6
9
11
12
14
16
18
19
19
20
21
21
19
18
15

Dew Point (°C)

5
2
1
-1
-2
-2
-2
-2
-0
2
3
4
4
5
6
7
8
8
8
9
10
11
12
9

Relative Humidity (%)

56
54
53
51
51
51
53
55
57
61
62
55
47
44
43
41
40
39
39
41
49
56
66
63

Pressure (mb)

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

Ozone (du)

378
380
381
381
381
381
381
380
380
380
379
379
380
380
381
381
382
383
383
384
385
386
387
389

Friday 1

Full Moon 100%

No Rise

05:56

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
20 Bad
21 Bad

Sun - Rise: 06:11, Set: 21:03, Transit: 13:37. Moon - Rise: No Rise, Set: 05:56. Civil Dark: 21:40 - 05:33. Nautical Dark: 22:27 - 04:45. Astro Dark: 23:26 - 03:44

Total Clouds (% Sky Obscured)

60
60
55
55
55
55
62
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
96
92

Low Clouds (% Sky Obscured)

0
12
25
34
39
41
46
42
37
33
46
67
77
53
74
45
47
50
49
59
66
73
69
69

Medium Clouds (% Sky Obscured)

34
38
45
44
49
40
35
35
64
92
100
100
100
46
97
41
54
67
79
86
93
100
96
92

High Clouds (% Sky Obscured)

60
60
55
55
55
55
62
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
69
38

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
8
9
9
9
9
9
8
8
6
4
2
3
3
4
6

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

Precipitation Probability (%)

22
20
16
4
10
10
5
15
25
23
52
55
62
71
86
95
95
95
95
95
95
95
95
95

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0.3
0.4
0.6
0.7
1.5
1.3
1
1.2
1.5
1.9
1.2
0.9

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

15
14
13
13
12
12
12
12
12
13
14
15
15
16
18
17
20
20
19
18
17
16
16
15

Feels Like (°C)

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

Dew Point (°C)

7
7
7
7
7
6
6
7
7
9
10
11
12
12
13
13
13
14
14
14
14
14
13
13

Relative Humidity (%)

60
63
65
69
70
68
68
70
71
76
78
78
80
80
70
78
64
69
73
79
81
85
86
89

Pressure (mb)

1019
1019
1019
1018
1018
1018
1017
1017
1016
1016
1016
1016
1016
1016
1015
1015
1014
1014
1013
1013
1012
1012
1012
1012

Ozone (du)

389
387
385
382
379
378
378
379
379
381
381
377
373
370
368
367
367
367
368
368
371
373
375
377

Saturday 2

Waning Gibbous 98%

22:34

06:19

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
20 Bad
21 Bad

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

Total Clouds (% Sky Obscured)

90
93
97
100
100
99
99
99
100
100
99
98
97
97
97
97
97
96
96
92
90
86
87
88

Low Clouds (% Sky Obscured)

72
77
83
87
89
90
91
91
91
92
92
93
93
93
93
92
77
60
45
44
42
40
48
51

Medium Clouds (% Sky Obscured)

90
93
97
100
87
74
61
54
48
44
60
76
92
94
96
97
86
76
65
64
62
61
71
80

High Clouds (% Sky Obscured)

12
41
71
100
95
84
66
67
81
98
84
69
55
51
38
31
39
38
46
51
54
57
42
33

ISS Passover

Visibility (miles)

7
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

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

Precipitation Probability (%)

95
81
66
51
78
95
95
95
95
95
95
95
95
81
68
59
54
43
24
24
29
34
42
47

Precipitation Amount (mm)

0.7
0.4
0.2
0
0.4
0.7
0.9
0.8
0.7
0.9
0.7
0.7
0.7
0.5
0.3
0.2
0.2
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

92
95
93
93
92
93
93
93
90
88
87
87
86
86
86
84
83
75
68
63
67
72
76
79

Pressure (mb)

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

Ozone (du)

379
380
382
384
385
383
380
378
377
376
375
375
375
375
374
374
373
373
373
373
373
372
372
372

Sunday 3

Waning Gibbous 95%

23:44

06:51

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

Total Clouds (% Sky Obscured)

89
89
89
90
91
91
92
89
87
85
87
89
92
91
90
89
89
89
89
93
96
100

Low Clouds (% Sky Obscured)

53
58
61
63
69
74
79
78
76
73
70
69
64
53
44
31
36
43
51
56
60
63

Medium Clouds (% Sky Obscured)

89
89
89
90
91
87
83
83
84
85
82
77
72
77
82
81
68
61
54
70
83
92

High Clouds (% Sky Obscured)

29
29
24
20
17
37
45
45
45
65
70
75
70
70
75
75
79
66
49
65
82
99

ISS Passover

Visibility (miles)

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

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

Precipitation Probability (%)

47
45
40
36
37
35
33
51
57
59
64
61
52
63
73
83
83
79
79
73
69
64

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

2
3
2
2
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
4
6

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

84
87
89
89
90
90
90
90
91
91
93
86
80
74
70
67
64
65
65
66
74
83

Pressure (mb)

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

Ozone (du)

372
372
373
374
375
377
379
381
383
385
387
388
388
389
389
389
390
389
388
387
385
383

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

Generated: 27/04/26 22:43:05. Forecast: 27/04/26 to 03/05/26. Timezone: UTC+2.00