Clear Outside v1.0 - International Weather Forecasts For Astronomers

Monday 27

Waxing Gibbous 86%

17:40

04:59

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

Sun - Rise: 06:18, Set: 20:55, Transit: 13:37. Moon - Rise: 17:40, 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)

72
79
66
92
99
100
100
100
100
100
100
100
81
83
90
80
84
84
92
90
46
64
73
50

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
8
14
0

Medium Clouds (% Sky Obscured)

63
53
66
92
96
100
100
100
100
99
99
98
76
74
79
58
64
63
66
54
31
37
39
32

High Clouds (% Sky Obscured)

72
20
0
0
91
98
96
100
100
36
100
37
15
15
15
20
20
20
21
6
6
2
2
2

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

57
65
68
68
73
76
69
68
71
74
75
74
78
78
70
66
61
57
53
49
46
43
47
51

Pressure (mb)

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

Ozone (du)

388
394
401
406
403
402
402
403
404
408
411
412
412
412
413
414
413
413
412
411
412
412
409
406

Tuesday 28

Waxing Gibbous 92%

18:53

05:11

19 Bad
20 Bad
21 Bad
22 Bad
23 OK
00 Bad
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

Sun - Rise: 06:16, Set: 20:56, Transit: 13:37. Moon - Rise: 18:53, 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)

91
92
87
76
22
53
4
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)

33
59
62
53
4
3
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

73
71
70
51
17
45
4
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

15
13
12
10
9
9
7
6
4
4
3
2
2
3
4
6
8
9
11
12
13
13
14
14

Dew Point (°C)

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

Relative Humidity (%)

55
61
60
62
65
71
66
64
62
58
58
56
58
60
57
49
46
41
40
39
39
40
45
46

Pressure (mb)

1019
1020
1020
1021
1022
1022
1022
1022
1022
1023
1023
1023
1023
1024
1024
1025
1025
1024
1024
1024
1023
1023
1023
1023

Ozone (du)

404
403
401
400
401
401
403
404
406
405
400
397
397
397
397
395
395
395
394
393
393
392
391
389

Wednesday 29

Waxing Gibbous 97%

18:53

05:23

19 Good
20 Good
21 Good
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

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)

1
0
0
0
0
0
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
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)

16
14
13
12
13
12
12
12
11
10
10
9
9
10
12
14
15
16
16
17
16
16
14
13

Chance of Frost

Temperature (°C)

17
17
14
12
11
10
9
8
8
7
6
5
5
6
8
11
12
15
16
18
18
19
19
18

Feels Like (°C)

13
13
10
8
7
6
6
5
4
4
3
3
2
3
5
6
8
10
12
13
14
15
16
16

Dew Point (°C)

7
7
3
1
1
1
1
0
0
-1
-1
-1
-2
-2
-2
-3
-3
-1
0
1
1
3
5
6

Relative Humidity (%)

49
53
47
46
48
52
55
57
60
60
64
62
61
57
48
39
35
33
33
32
32
34
41
45

Pressure (mb)

1023
1023
1024
1025
1025
1026
1026
1026
1026
1026
1026
1026
1027
1027
1027
1027
1027
1027
1026
1026
1025
1025
1024
1024

Ozone (du)

388
388
386
386
385
383
384
383
382
381
381
380
380
378
377
377
377
378
378
378
378
377
377
376

Thursday 30

Waxing Gibbous 99%

20:07

05:38

19 Good
20 Good
21 Good
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

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
1
0
0
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
1
0
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)

12
10
10
9
8
7
7
6
6
6
6
6
6
6
8
10
12
12
12
12
11
10
10
8

Chance of Frost

Temperature (°C)

18
17
15
13
12
10
9
8
8
7
7
7
7
8
11
14
16
18
20
21
22
22
22
22

Feels Like (°C)

16
15
13
11
9
8
7
6
6
5
5
5
6
8
10
11
13
15
17
18
20
20
21
21

Dew Point (°C)

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

Relative Humidity (%)

50
63
60
58
55
55
52
52
53
54
57
57
62
65
55
49
45
45
42
40
40
40
41
51

Pressure (mb)

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

Ozone (du)

375
375
376
377
378
378
379
379
379
380
381
381
382
383
384
385
387
388
388
388
389
388
388
387

Friday 1

Full Moon 100%

21:21

05:56

19 Good
20 Good
21 Good
22 Good
23 Good
00 Good
01 Good
02 Good
03 Good
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

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
7
13
18
56
63
74
95
90
85
89
95
100
96
93
89
93
95

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
7
13
18
11
15
25
80
75
70
60
47
40
36
28
17
24
32

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
1
2
3
56
63
74
69
70
56
59
65
69
62
55
46
62
80

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
38
69
85
89
95
100
80
60
55
65
80

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
5
8
8
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
Very Light Rain
Very Light Rain
None
None
None
None
None
None

Precipitation Probability (%)

0
0
0
0
0
1
1
1
1
1
6
40
46
52
54
52
62
62
53
44
27
6
4
2

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

8
8
8
8
8
7
8
7
7
7
7
8
8
8
7
7
9
8
7
7
8
9
10
8

Chance of Frost

Temperature (°C)

21
18
16
15
14
14
14
13
13
13
12
12
13
14
14
15
15
15
16
16
17
18
19
18

Feels Like (°C)

20
18
15
14
14
13
13
13
13
12
12
11
11
13
13
13
12
13
14
15
15
15
16
16

Dew Point (°C)

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

Relative Humidity (%)

59
70
73
75
78
79
80
83
84
89
90
93
93
92
89
86
83
82
82
81
69
61
54
60

Pressure (mb)

1021
1020
1021
1021
1021
1020
1020
1019
1019
1019
1018
1018
1018
1018
1018
1018
1019
1018
1018
1018
1017
1017
1016
1016

Ozone (du)

387
386
385
386
386
385
383
378
376
375
374
374
376
378
376
375
373
373
373
373
375
377
379
379

Saturday 2

Waning Gibbous 98%

22:34

06:19

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
09 Bad
10 Bad
11 Bad
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad
17 Bad
18 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)

100
98
96
95
91
81
73
70
66
60
79
92
100
99
97
96
93
90
87
84
79
76
74
73

Low Clouds (% Sky Obscured)

40
41
38
36
37
39
43
39
36
35
58
77
92
91
86
82
77
75
75
74
73
72
66
58

Medium Clouds (% Sky Obscured)

99
82
66
49
35
24
18
25
33
40
60
79
100
79
58
38
28
19
8
9
8
7
9
15

High Clouds (% Sky Obscured)

97
98
94
95
78
56
32
38
50
60
67
62
61
44
22
0
0
0
0
0
0
0
2
2

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
6
4
2
5
7
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
Very Light Rain
Light Rain
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

Precipitation Probability (%)

0
3
3
1
8
15
30
60
79
89
95
95
95
95
95
95
88
58
22
29
30
28
35
40

Precipitation Amount (mm)

0
0
0
0
0
0
0
0.3
0.6
0.7
0.9
1.1
1.3
1.3
1.2
1
0.6
0.2
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

17
16
15
13
12
11
11
11
10
10
11
11
11
12
12
13
13
14
15
16
17
17
18
17

Feels Like (°C)

16
16
13
13
13
13
12
12
10
10
10
10
10
10
11
11
11
12
12
12
16
16
16
16

Dew Point (°C)

11
11
11
10
9
9
9
9
9
9
9
10
11
11
11
11
11
11
10
10
10
10
10
11

Relative Humidity (%)

66
73
76
80
84
86
87
88
88
90
88
91
95
96
95
92
89
80
73
66
64
63
62
68

Pressure (mb)

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

Ozone (du)

380
380
379
379
379
379
379
378
379
379
380
380
379
379
380
380
381
380
380
379
379
379
379
379

Sunday 3

Waning Gibbous 95%

23:44

06:51

19 Bad
20 Bad
21 Bad
22 OK
23 OK
00 Bad
01 Bad
02 Bad
03 Bad
04 Bad
05 Bad
06 Bad
07 Bad
08 Bad
09 OK
10 OK
11 OK
12 Bad
13 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)

72
56
41
26
32
37
42
49
50
51
56
60
60
48
38
29
33
40
52

Low Clouds (% Sky Obscured)

49
42
36
26
32
37
42
46
47
45
50
55
60
48
38
29
33
40
34

Medium Clouds (% Sky Obscured)

21
13
7
1
1
0
0
3
8
14
16
13
9
2
1
0
0
0
0

High Clouds (% Sky Obscured)

3
2
1
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

Fog (%)

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

Precipitation Probability (%)

40
32
23
3
6
4
0
0
0
0
0
0
0
0
0
0
16
21
21

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

11
12
11
10
9
9
8
8
8
7
7
7
7
8
8
8
8
9
8

Relative Humidity (%)

74
83
86
87
90
90
91
91
93
95
94
93
91
90
84
77
71
67
61

Pressure (mb)

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

Ozone (du)

380
380
382
383
384
386
389
391
389
387
386
385
385
384
385
386
387
389
391

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

Generated: 27/04/26 19:39:44. Forecast: 27/04/26 to 03/05/26. Timezone: UTC+2.00