Clear Outside v1.0 - International Weather Forecasts For Astronomers

Saturday 18

Waxing Crescent 2%

07:03

22:46

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 OK
02 OK
03 Good
04 Bad
05 Bad
06 OK
07 Good
08 Good
09 Bad
10 Bad
11 Bad
12 Bad

Sun - Rise: 06:38, Set: 20:43, Transit: 13:41. Moon - Rise: 07:03, Set: 22:46. Civil Dark: 21:18 - 06:03. Nautical Dark: 22:02 - 05:18. Astro Dark: 22:52 - 04:28

Total Clouds (% Sky Obscured)

97
98
97
99
88
90
97
86
85
94
68
76
37
23
18
54
63
36
7
0
45
74
74
82

Low Clouds (% Sky Obscured)

66
63
60
67
71
75
74
81
64
35
0
0
0
9
15
20
39
0
0
0
37
46
60
58

Medium Clouds (% Sky Obscured)

79
92
41
33
34
59
44
50
50
58
39
53
30
10
8
31
29
20
3
0
12
19
13
23

High Clouds (% Sky Obscured)

65
41
71
91
0
0
16
32
11
53
27
0
0
0
0
0
0
0
0
0
0
0
0
0

ISS Passover

Visibility (miles)

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

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

Precipitation Probability (%)

95
95
57
55
29
12
6
26
22
31
10
4
0
0
0
16
14
3
0
2
27
36
39
38

Precipitation Amount (mm)

0.8
0.5
0.2
0.3
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

14
13
14
15
13
13
12
11
11
12
11
10
9
9
8
6
5
4
4
6
9
10
11
11

Dew Point (°C)

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

Relative Humidity (%)

75
86
86
79
83
82
75
71
72
76
77
80
81
82
82
85
84
86
88
85
78
70
61
55

Pressure (mb)

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

Ozone (du)

374
376
377
377
378
379
378
378
380
379
380
383
390
399
407
411
414
415
413
416
416
415
413
412

Sunday 19

Waxing Crescent 6%

07:40

00:18

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

Sun - Rise: 06:36, Set: 20:44, Transit: 13:41. Moon - Rise: 07:40, Set: 00:18. Civil Dark: 21:20 - 06:00. Nautical Dark: 22:04 - 05:16. Astro Dark: 22:55 - 04:25

Total Clouds (% Sky Obscured)

83
77
63
50
45
43
80
50
15
45
58
62
57
47
39
40
71
64
72
61
51
66
73
78

Low Clouds (% Sky Obscured)

49
36
57
50
45
43
36
0
0
40
54
55
56
47
39
40
58
44
58
41
38
57
59
42

Medium Clouds (% Sky Obscured)

26
21
4
0
0
2
19
20
8
40
58
62
57
4
0
0
11
26
25
28
22
27
38
46

High Clouds (% Sky Obscured)

0
0
0
0
0
6
42
12
5
5
5
5
1
0
0
0
0
0
0
0
1
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 (%)

36
21
8
8
20
19
5
11
1
0
0
0
0
0
0
0
0
0
0
1
2
5
18
12

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

Chance of Frost

Temperature (°C)

14
15
15
15
15
14
13
11
10
8
7
6
6
6
6
5
4
4
4
5
6
8
10
11

Feels Like (°C)

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

Dew Point (°C)

4
4
3
3
4
4
5
5
5
5
4
3
2
3
3
3
2
2
2
2
2
2
2
1

Relative Humidity (%)

52
50
46
43
46
51
58
66
73
78
79
78
75
79
83
85
85
85
85
82
72
67
57
52

Pressure (mb)

1024
1023
1023
1023
1023
1023
1023
1023
1024
1024
1024
1024
1024
1024
1023
1023
1023
1023
1023
1023
1024
1023
1023
1023

Ozone (du)

411
410
407
406
403
401
399
396
396
397
397
396
396
395
397
397
397
398
399
401
401
402
403
405

Monday 20

Waxing Crescent 14%

08:33

01:39

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

Sun - Rise: 06:34, Set: 20:46, Transit: 13:41. Moon - Rise: 08:33, Set: 01:39. Civil Dark: 21:21 - 05:58. Nautical Dark: 22:06 - 05:13. Astro Dark: 22:57 - 04:22

Total Clouds (% Sky Obscured)

92
98
88
87
87
90
53
35
8
3
4
3
2
3
4
13
24
29
32
28
31
31
57
85

Low Clouds (% Sky Obscured)

51
39
34
36
46
52
7
10
2
0
0
1
0
1
1
12
24
29
32
28
31
31
57
82

Medium Clouds (% Sky Obscured)

48
57
55
55
51
54
34
20
0
0
0
0
0
0
0
0
0
0
0
0
0
0
3
6

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
0
0
0
3
6
10
6
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 (%)

1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
5
16

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

8
8
9
10
10
9
10
10
8
5
5
5
5
4
4
3
2
1
2
3
4
6
7
7

Dew Point (°C)

2
1
-1
-1
-1
-1
1
3
3
2
2
2
3
3
3
3
2
2
1
2
2
3
3
4

Relative Humidity (%)

51
47
42
39
37
39
45
55
66
66
66
72
82
86
89
89
91
89
88
82
74
68
62
61

Pressure (mb)

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

Ozone (du)

407
407
408
408
407
406
406
405
404
405
405
405
404
404
403
400
397
395
394
394
394
394
394
393

Tuesday 21

Waxing Crescent 23%

09:43

02:44

13 Bad
14 Bad
15 Bad
16 Bad
17 Bad
18 OK
19 OK
20 OK
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 OK

Sun - Rise: 06:32, Set: 20:48, Transit: 13:41. Moon - Rise: 09:43, Set: 02:44. Civil Dark: 21:23 - 05:56. Nautical Dark: 22:08 - 05:11. Astro Dark: 23:00 - 04:18

Total Clouds (% Sky Obscured)

100
95
90
86
54
43
29
17
10
3
1
1
0
0
0
0
0
0
0
0
0
0
7
14

Low Clouds (% Sky Obscured)

100
79
53
29
17
9
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

7
10
15
18
12
9
6
4
3
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
7
14

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 (%)

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

Chance of Frost

Temperature (°C)

11
12
13
13
14
14
14
13
12
11
9
9
8
7
7
6
6
5
5
6
8
10
12
14

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

59
58
53
52
49
46
50
54
54
57
62
67
68
67
69
70
68
70
70
66
58
51
46
43

Pressure (mb)

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

Ozone (du)

394
396
397
396
395
395
397
396
393
392
393
396
397
395
395
397
396
393
393
391
393
396
396
396

Wednesday 22

Waxing Crescent 34%

11:05

03:28

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

Sun - Rise: 06:30, Set: 20:49, Transit: 13:41. Moon - Rise: 11:05, Set: 03:28. Civil Dark: 21:25 - 05:54. Nautical Dark: 22:10 - 05:08. Astro Dark: 23:03 - 04:15

Total Clouds (% Sky Obscured)

19
13
6
0
20
47
70
55
34
14
11
9
8
26
45
63
39
20
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)

19
13
6
0
20
47
70
55
34
14
11
9
8
26
45
63
39
20
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
11
10
10
9
8
7
7
6
6
5
5
4
4
4
4
4
4
5
6
8

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

11
12
13
13
14
14
13
12
10
9
8
7
6
6
6
5
5
5
5
5
6
7
8
9

Dew Point (°C)

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

Relative Humidity (%)

42
40
39
39
39
42
46
52
54
56
63
70
73
75
74
71
70
70
68
66
60
53
47
44

Pressure (mb)

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

Ozone (du)

395
392
389
387
385
383
381
379
376
376
377
379
380
381
382
382
383
380
377
374
376
378
380
385

Thursday 23

Waxing Crescent 46%

12:30

03:59

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

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)

0
0
0
0
0
0
0
12
24
36
56
76
97
77
57
36
43
52
66
61
53
52
55
55

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
3
5
10
28
50
75
65
49
30
28
27
35
42
52
52
55
51

Medium Clouds (% Sky Obscured)

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

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
4
8
17
40
62
80
61
39
16
11
6
1
1
1
0
27
55

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

10
11
14
14
13
14
14
14
8
7
7
6
6
5
4
4
5
4
3
3
4
3
3
4

Dew Point (°C)

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

Relative Humidity (%)

41
38
40
44
47
54
62
72
72
71
70
69
68
65
69
75
80
76
73
70
59
50
41
40

Pressure (mb)

1020
1020
1019
1019
1018
1018
1018
1018
1018
1018
1019
1019
1019
1019
1019
1019
1019
1019
1020
1020
1020
1020
1021
1020

Ozone (du)

390
395
391
386
382
381
379
377
378
379
380
382
383
384
387
390
392
395
397
400
397
395
392
391

Friday 24

First Quarter 58%

No Rise

04:20

13 Bad
14 Bad
15 OK
16 OK
17 OK
18 OK
19 Bad
20 Bad
21 Bad
22 Bad
23 Bad
00 OK
01 OK
02 Bad
03 Bad
04 Bad
05 Bad
06 Bad
07 Bad

Sun - Rise: 06:26, Set: 20:52, Transit: 13:40. Moon - Rise: No Rise, 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)

58
52
41
34
40
47
53
52
53
53
52
47
46
50
53
61
63
69
71

Low Clouds (% Sky Obscured)

44
39
39
34
38
41
45
47
48
49
47
46
46
46
49
48
49
50
55

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)

58
51
18
1
3
3
3
3
2
2
2
1
0
0
0
0
1
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

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
1
2

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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

5
6
10
10
11
11
11
12
7
6
6
6
5
6
4
5
5
5
5

Dew Point (°C)

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

Relative Humidity (%)

39
38
37
36
37
44
51
58
62
67
70
70
71
72
75
78
80
82
82

Pressure (mb)

1020
1020
1020
1019
1019
1019
1019
1019
1019
1019
1020
1020
1020
1020
1020
1020
1020
1020
1020

Ozone (du)

389
388
385
383
381
379
377
375
375
374
374
375
375
376
372
369
365
365
366

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

Generated: 18/04/26 12:41:14. Forecast: 18/04/26 to 24/04/26. Timezone: UTC+2.00