Clear Outside v1.0 - International Weather Forecasts For Astronomers

Tuesday 21

Waxing Crescent 34%

09:43

02:44

20 OK
21 OK
22 OK
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

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)

31
25
20
1
1
1
3
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Low Clouds (% Sky Obscured)

0
1
1
1
1
1
3
1
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

10
9
7
6
5
5
5
5
4
4
3
3
3
5
7
9
10
12
12
12
13
13
13
14

Dew Point (°C)

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

Relative Humidity (%)

55
55
55
56
59
61
65
70
74
76
75
76
71
63
56
50
44
42
42
42
41
41
42
46

Pressure (mb)

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

Ozone (du)

425
423
418
415
411
409
407
405
397
391
389
389
390
392
396
401
405
408
408
400
397
396
393
388

Wednesday 22

Waxing Crescent 46%

11:05

03:28

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
19 Good

Sun - Rise: 06:30, Set: 20:49, Transit: 13:40. 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)

0
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)

9
9
9
9
8
8
7
7
7
7
7
7
7
8
9
8
9
9
9
9
9
9
9
9

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

6
5
3
4
4
4
3
3
2
2
2
1
1
2
3
3
2
1
1
1
2
2
4
5

Relative Humidity (%)

53
58
55
60
65
67
69
71
72
72
75
75
71
63
57
48
39
34
32
32
33
33
38
43

Pressure (mb)

1025
1026
1027
1027
1028
1028
1028
1028
1028
1029
1029
1029
1029
1030
1030
1030
1030
1029
1029
1028
1028
1027
1027
1027

Ozone (du)

386
387
393
393
396
399
402
403
403
403
401
396
391
383
380
379
378
378
377
376
374
374
373
374

Thursday 23

Waxing Crescent 42%

12:30

03:59

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

0
0
0
0
0
0
1
1
3
8
23
42
47
32
16
15
83
65
44
24
2
2
2
3

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
7
23
42
47
32
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
30
20
8
0
0
0
0

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
1
1
1
1
1
1
6
2
83
65
44
24
0
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

52
57
60
60
61
62
63
64
66
68
71
75
72
64
55
48
42
41
39
39
41
44
48
54

Pressure (mb)

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

Ozone (du)

374
372
370
368
367
367
367
368
368
368
368
368
369
370
371
373
375
379
381
383
385
386
382
381

Friday 24

First Quarter 58%

13:53

04:20

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

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)

6
3
6
5
13
18
23
23
12
6
16
9
8
1
3
3
3
3
3
18
4
6
35
13

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

High Clouds (% Sky Obscured)

5
1
4
1
12
9
4
5
0
0
0
0
0
0
0
0
0
0
0
3
1
3
9
9

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

7
7
7
5
5
4
4
3
2
2
2
2
1
2
2
1
1
1
2
1
2
2
2
3

Relative Humidity (%)

61
69
75
74
78
77
78
79
79
82
82
82
75
65
55
47
41
37
36
35
36
38
42
49

Pressure (mb)

1021
1022
1022
1022
1022
1022
1022
1021
1021
1021
1021
1021
1021
1021
1021
1022
1021
1021
1021
1021
1020
1020
1020
1020

Ozone (du)

381
380
380
380
379
380
378
377
377
375
372
369
368
366
367
370
369
368
367
367
366
365
365
364

Saturday 25

Waxing Gibbous 68%

15:13

04:36

20 OK
21 OK
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: 06:24, 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)

33
43
60
78
87
96
97
99
100
95
93
91
100
100
100
97
95
92
93
93
94
92
91
90

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
11
21
32
42
49
55
25
18
12
8
5
1
1
1
1
1
1
0

Medium Clouds (% Sky Obscured)

14
26
39
41
38
32
41
50
60
49
29
17
83
78
57
66
81
92
93
93
94
92
91
90

High Clouds (% Sky Obscured)

33
43
60
78
87
83
89
95
100
70
40
10
100
100
100
86
72
58
49
44
36
27
16
4

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

58
67
74
79
82
84
82
81
80
79
80
79
75
69
64
59
55
50
46
46
44
44
48
53

Pressure (mb)

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

Ozone (du)

363
364
364
365
366
366
365
364
365
365
365
366
365
366
368
370
371
373
375
375
375
375
376
377

Sunday 26

Waxing Gibbous 78%

16:29

04:49

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

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)

69
49
29
30
33
33
49
58
67
53
42
34
34
39
37
41
41
42
50
63
76
77
82
82

Low Clouds (% Sky Obscured)

0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
11
27
40
34
30
25

Medium Clouds (% Sky Obscured)

69
49
29
30
33
33
34
19
3
4
4
4
3
3
4
7
14
19
23
31
30
30
30
30

High Clouds (% Sky Obscured)

3
2
0
0
0
0
33
58
67
53
32
1
10
18
24
15
7
0
20
40
30
40
12
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
3
4
4
9
11
10

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

Chance of Frost

Temperature (°C)

12
10
9
7
6
6
5
5
4
4
4
5
5
7
9
11
12
14
15
15
15
15
14
13

Feels Like (°C)

10
7
6
6
5
5
5
1
2
2
2
1
2
4
5
6
6
7
8
13
12
12
12
12

Dew Point (°C)

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

Relative Humidity (%)

57
60
63
65
69
72
76
80
83
85
85
83
83
74
67
60
56
51
47
46
45
43
46
48

Pressure (mb)

1025
1026
1026
1027
1027
1027
1027
1027
1027
1027
1027
1027
1027
1027
1027
1027
1027
1026
1026
1026
1025
1025
1025
1025

Ozone (du)

379
380
382
384
386
388
390
391
393
394
393
392
391
394
396
399
402
405
408
406
404
401
401
401

Monday 27

Waxing Gibbous 86%

17:43

05:01

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

79
75
68
48
29
11
6
3
1
1
1
1
12
25
39
43
47
54

Low Clouds (% Sky Obscured)

20
14
6
4
2
0
0
0
0
0
0
0
8
16
22
18
11
5

Medium Clouds (% Sky Obscured)

24
27
29
28
15
2
1
1
1
1
0
0
1
1
2
3
4
5

High Clouds (% Sky Obscured)

1
1
1
5
11
11
6
3
1
1
1
1
12
21
27
29
30
25

ISS Passover

Visibility (miles)

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

Precipitation Type

None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

17
15
3
11
7
0
1
1
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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

12
9
9
9
8
8
7
3
3
3
3
3
2
3
4
4
5
6

Dew Point (°C)

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

Relative Humidity (%)

52
51
51
50
53
54
56
60
65
68
70
70
71
59
51
43
42
42

Pressure (mb)

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

Ozone (du)

401
402
403
403
403
402
402
403
404
406
404
403
402
401
401
401
402
403

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

Generated: 21/04/26 20:02:39. Forecast: 21/04/26 to 27/04/26. Timezone: UTC+2.00