Clear Outside v1.0 - International Weather Forecasts For Astronomers

Thursday 23

Waxing Crescent 46%

12:30

03:59

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 OK
08 OK
09 Good
10 Good
11 Good
12 Good
13 Good
14 Good
15 Good
16 Good
17 Good
18 Good

Sun - Rise: 06:28, Set: 20:51, Transit: 13:40. Moon - Rise: 12:30, Set: 03:59. Civil Dark: 21:27 - 05:52. Nautical Dark: 22:12 - 05:06. Astro Dark: 23:05 - 04:12

Total Clouds (% Sky Obscured)

2
2
2
3
1
1
1
1
1
1
0
9
23
39
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
8
22
39
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
1
1
0
1
0
1
1
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)

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

Chance of Frost

Temperature (°C)

19
17
15
13
11
9
8
7
6
6
5
4
4
5
6
8
10
12
14
16
17
18
18
18

Feels Like (°C)

17
16
13
11
9
7
7
6
5
4
4
3
2
3
4
5
8
10
11
13
15
16
16
17

Dew Point (°C)

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

Relative Humidity (%)

41
50
54
53
54
62
69
74
78
78
79
77
75
68
55
47
40
36
32
31
29
29
30
35

Pressure (mb)

1026
1026
1027
1027
1027
1027
1027
1027
1027
1027
1026
1026
1026
1026
1026
1026
1026
1026
1025
1025
1024
1023
1023
1022

Ozone (du)

373
373
374
376
376
375
377
379
381
381
381
380
379
379
378
378
378
377
379
381
382
380
373
367

Friday 24

First Quarter 58%

13:53

04:20

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

Sun - Rise: 06:26, Set: 20:52, Transit: 13:40. Moon - Rise: 13:53, Set: 04:20. Civil Dark: 21:29 - 05:50. Nautical Dark: 22:15 - 05:03. Astro Dark: 23:08 - 04:09

Total Clouds (% Sky Obscured)

0
0
0
0
0
0
36
27
25
9
0
9
25
60
46
0
0
0
0
0
5
16
91
93

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
36
27
25
9
0
9
25
60
46
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
8
10
13

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
5
5
91
93

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

Chance of Frost

Temperature (°C)

17
16
13
11
10
9
8
7
6
6
5
4
4
5
6
8
10
13
15
16
17
18
18
17

Feels Like (°C)

15
15
12
10
9
9
7
6
5
5
4
3
3
4
5
7
10
12
14
15
16
16
15
15

Dew Point (°C)

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

Relative Humidity (%)

43
54
59
58
62
66
63
59
59
60
60
60
62
58
49
42
36
31
29
28
28
28
30
33

Pressure (mb)

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

Ozone (du)

363
361
360
360
361
363
367
370
372
376
378
381
385
381
372
368
365
364
364
363
362
361
360
360

Saturday 25

Waxing Gibbous 68%

15:13

04:36

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 OK
12 Good
13 Good
14 OK
15 Bad
16 Bad
17 Bad
18 Bad

Sun - Rise: 06:24, Set: 20:54, Transit: 13:40. Moon - Rise: 15:13, Set: 04:36. Civil Dark: 21:30 - 05:47. Nautical Dark: 22:17 - 05:01. Astro Dark: 23:11 - 04:06

Total Clouds (% Sky Obscured)

94
92
96
97
97
96
91
95
99
100
98
97
97
79
56
52
38
18
15
31
50
72
100
99

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
17
30
52
53
59
45
41
43
38
33
0
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

56
54
32
63
65
65
65
60
60
55
45
41
37
73
36
34
12
9
8
14
18
25
25
25

High Clouds (% Sky Obscured)

94
92
96
97
97
96
91
95
99
100
98
32
25
12
3
1
0
0
1
31
50
72
100
99

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

13
11
10
8
7
7
7
7
5
4
4
4
4
4
5
7
8
10
12
13
13
13
13
11

Dew Point (°C)

2
3
3
3
3
4
3
3
2
2
3
4
4
4
4
3
3
2
2
1
1
0
0
1

Relative Humidity (%)

38
47
55
60
64
68
70
70
70
72
76
82
85
82
77
66
58
51
44
41
38
35
34
37

Pressure (mb)

1020
1021
1022
1022
1023
1023
1023
1023
1024
1024
1025
1025
1025
1025
1026
1026
1027
1026
1026
1026
1025
1025
1025
1025

Ozone (du)

360
358
358
359
360
360
359
358
359
360
362
364
367
368
370
369
371
372
373
373
372
372
371
371

Sunday 26

Waxing Gibbous 78%

16:29

04:49

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

Sun - Rise: 06:22, Set: 20:56, Transit: 13:40. Moon - Rise: 16:29, Set: 04:49. Civil Dark: 21:32 - 05:45. Nautical Dark: 22:19 - 04:58. Astro Dark: 23:14 - 04:02

Total Clouds (% Sky Obscured)

99
72
47
25
25
16
26
15
4
5
4
4
6
15
23
34
61
63
74
52
27
6
6
5

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)

20
15
35
25
25
16
26
4
1
2
0
0
3
3
0
0
11
20
26
22
11
0
0
0

High Clouds (% Sky Obscured)

99
72
43
25
15
6
9
2
0
0
0
1
1
13
23
34
58
63
74
52
27
0
1
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
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
8
8
8
8
7
6
6
6
6
6
6
6
7
8
9
9
9
9
9
9
9
10
9

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

2
3
3
2
2
3
3
3
3
3
2
2
2
1
2
2
2
1
1
1
0
0
1
1

Relative Humidity (%)

42
49
52
55
60
65
70
73
76
79
80
80
80
74
65
60
52
43
38
35
33
31
32
35

Pressure (mb)

1025
1025
1026
1026
1027
1027
1027
1027
1027
1027
1027
1027
1028
1028
1028
1028
1028
1028
1027
1027
1026
1026
1025
1025

Ozone (du)

369
366
366
367
369
371
373
373
372
371
370
372
375
376
376
375
376
376
376
377
378
379
380
383

Monday 27

Waxing Gibbous 86%

17:43

05:01

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

Sun - Rise: 06:20, Set: 20:57, Transit: 13:40. Moon - Rise: 17:43, Set: 05:01. Civil Dark: 21:34 - 05:43. Nautical Dark: 22:21 - 04:56. Astro Dark: 23:17 - 03:59

Total Clouds (% Sky Obscured)

11
14
6
9
22
41
57
68
92
100
82
64
46
37
26
14
20
27
34
36
36
37
39
46

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
1
2
2
2
6
8
13
12
14
12
21
29

Medium Clouds (% Sky Obscured)

0
0
0
0
13
27
36
36
35
36
51
61
46
14
12
8
7
5
2
1
0
0
1
1

High Clouds (% Sky Obscured)

3
8
6
9
15
14
14
42
72
100
71
42
13
7
5
4
4
5
6
4
2
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
6
9
9
11
11

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
8
7
6
6
6
6
5
5
5
6
6
6
8
9
9
10
10
11
11
11
11
10

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

40
50
54
60
67
72
77
82
85
84
81
81
77
71
66
61
57
57
57
57
55
53
52
56

Pressure (mb)

1025
1025
1025
1026
1026
1025
1025
1025
1025
1025
1024
1024
1024
1024
1024
1024
1024
1024
1023
1023
1022
1022
1021
1021

Ozone (du)

384
385
387
386
387
390
389
387
385
385
385
388
393
404
411
417
424
423
423
422
423
423
424
417

Tuesday 28

Waxing Gibbous 92%

18:56

05:13

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

Sun - Rise: 06:18, Set: 20:59, Transit: 13:39. Moon - Rise: 18:56, Set: 05:13. Civil Dark: 21:36 - 05:41. Nautical Dark: 22:23 - 04:54. Astro Dark: 23:20 - 03:56

Total Clouds (% Sky Obscured)

57
63
68
74
73
70
66
62
64
67
57
49
45
40
38
32
36
38
41
39
38
38
32
27

Low Clouds (% Sky Obscured)

38
46
52
56
49
50
45
46
52
58
53
48
44
39
31
28
32
33
35
33
33
31
27
23

Medium Clouds (% Sky Obscured)

4
6
8
10
9
11
10
7
7
7
2
1
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
1
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 (%)

11
9
8
5
6
5
1
10
12
14
9
5
5
5
4
0
6
9
10
9
6
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
7
6
6
6
6
7
7
7
6
7
7
8
8
9
10
10
11
11
11
11
11
11

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

12
12
10
10
11
10
9
9
7
7
7
7
6
6
7
8
8
9
9
10
15
15
14
14

Dew Point (°C)

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

Relative Humidity (%)

60
64
71
77
85
87
90
91
93
94
94
93
90
88
80
72
64
57
49
43
41
41
40
43

Pressure (mb)

1021
1021
1021
1021
1022
1022
1022
1021
1021
1021
1021
1021
1022
1022
1022
1022
1022
1022
1022
1022
1022
1021
1021
1021

Ozone (du)

411
405
401
397
394
392
391
389
390
390
391
389
388
386
385
384
384
385
386
388
388
389
390
390

Wednesday 29

Waxing Gibbous 97%

18:56

05:25

19 OK
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

Sun - Rise: 06:17, Set: 21:00, Transit: 13:39. Moon - Rise: 18:56, Set: 05:25. Civil Dark: 21:38 - 05:39. Nautical Dark: 22:25 - 04:51. Astro Dark: 23:23 - 03:53

Total Clouds (% Sky Obscured)

21
16
11
5
4
2
0
0
0
0
0
1
2
2
2
3
3
4
4

Low Clouds (% Sky Obscured)

19
15
11
5
4
2
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

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
1
2
2
2
2
2
2
1

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 (%)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

14
15
12
12
11
11
11
11
6
6
7
6
6
6
8
8
9
10
10

Dew Point (°C)

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

Relative Humidity (%)

47
53
54
57
58
65
69
77
77
78
81
78
77
74
66
58
52
48
45

Pressure (mb)

1021
1021
1022
1022
1023
1023
1024
1024
1024
1024
1025
1025
1026
1026
1026
1027
1027
1027
1026

Ozone (du)

391
391
391
392
392
391
389
387
386
385
384
385
385
386
386
385
385
385
386

Forecast for Brussels, Bruxelles-Capitale, Kingdom of Belgium (50.85,4.35)

Generated: 23/04/26 19:51:43. Forecast: 23/04/26 to 29/04/26. Timezone: UTC+2.00