Clear Outside v1.0 - International Weather Forecasts For Astronomers

Monday 27

Waxing Gibbous 86%

16:29

05:01

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

Sun - Rise: 06:20, Set: 20:57, Transit: 13:40. Moon - Rise: 16:29, 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)

74
76
82
70
29
23
20
59
63
71
81
96
100
100
100
100
47
84
96
98
88
86
88
93

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)

37
18
1
27
29
23
2
12
60
71
81
69
72
94
100
100
47
84
92
95
87
86
88
93

High Clouds (% Sky Obscured)

45
76
63
30
15
9
16
45
0
0
1
74
97
100
100
100
21
27
29
26
14
25
28
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
2
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

12
13
14
15
16
16
16
16
16
12
10
9
9
8
7
6
6
5
4
3
3
4
6
6

Dew Point (°C)

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

Relative Humidity (%)

45
40
38
36
36
36
37
42
51
58
60
62
63
62
60
59
62
63
64
70
68
64
60
55

Pressure (mb)

1024
1023
1022
1022
1021
1021
1020
1020
1020
1020
1021
1021
1021
1021
1020
1020
1020
1020
1020
1020
1020
1020
1020
1020

Ozone (du)

380
380
380
379
380
382
383
388
397
402
402
402
404
407
411
414
415
414
414
414
417
418
417
416

Tuesday 28

Waxing Gibbous 92%

17:43

05:13

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

Sun - Rise: 06:18, Set: 20:59, Transit: 13:40. Moon - Rise: 17:43, 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)

87
94
86
71
52
41
6
0
38
53
55
45
12
17
0
0
0
0
0
0
0
0
1
0

Low Clouds (% Sky Obscured)

0
0
0
0
0
3
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

42
79
74
56
27
19
3
0
15
16
17
10
1
2
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

5
12
15
10
0
0
0
0
0
3
11
6
9
8
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
16
16
16
16
15
14
15
16
16
16
15
14
13
14
14
14
14
15
14
14
14
16
17

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

8
10
11
12
12
15
15
15
13
12
10
10
9
9
7
7
5
5
4
3
4
6
7
9

Dew Point (°C)

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

Relative Humidity (%)

50
45
43
41
39
40
41
47
52
54
56
57
59
64
65
66
62
60
57
56
56
54
50
44

Pressure (mb)

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

Ozone (du)

415
415
414
413
411
407
404
402
400
399
398
397
397
397
397
398
397
396
393
392
393
394
391
392

Wednesday 29

Waxing Gibbous 97%

18:56

05:25

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

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)

1
0
0
0
0
0
0
0
1
1
2
3
4
2
2
2
2
2
5
2
2
2
2
2

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
1
2
3
1
1
1
1
0
1
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

10
12
13
14
14
15
15
15
14
12
10
9
8
8
7
6
6
5
4
4
5
6
8
10

Dew Point (°C)

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

Relative Humidity (%)

40
36
34
33
34
37
40
41
45
46
48
48
51
52
55
57
59
60
59
59
56
48
41
35

Pressure (mb)

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

Ozone (du)

393
392
390
390
388
388
388
388
386
384
383
382
381
380
379
380
381
381
380
380
381
381
381
381

Thursday 30

Waxing Gibbous 99%

20:09

05:39

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

Sun - Rise: 06:15, Set: 21:02, Transit: 13:39. Moon - Rise: 20:09, Set: 05:39. Civil Dark: 21:39 - 05:37. Nautical Dark: 22:27 - 04:49. Astro Dark: 23:26 - 03:49

Total Clouds (% Sky Obscured)

1
1
1
1
2
1
1
2
2
1
1
1
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
1
1
1
1
1
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
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
16
16
16
15
14
13
12
11
10
10
9
8
8
8
7
6
5
6
6
7
7
7

Chance of Frost

Temperature (°C)

15
17
19
19
20
21
20
19
18
16
15
13
12
11
11
10
10
9
9
9
10
13
15
17

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

32
31
29
30
31
34
38
43
48
50
51
52
51
51
50
49
49
51
52
55
55
48
45
43

Pressure (mb)

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

Ozone (du)

381
381
380
380
380
379
379
378
378
377
377
376
376
376
377
378
380
379
377
377
377
377
376
375

Friday 1

Full Moon 100%

21:23

05:57

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

Sun - Rise: 06:13, Set: 21:04, Transit: 13:39. Moon - Rise: 21:23, Set: 05:57. Civil Dark: 21:41 - 05:35. Nautical Dark: 22:30 - 04:46. Astro Dark: 23:29 - 03:46

Total Clouds (% Sky Obscured)

0
0
5
9
15
11
6
0
17
43
77
79
80
73
79
84
90
92
96
99
100
100
100
99

Low Clouds (% Sky Obscured)

0
0
5
9
15
11
6
0
10
19
29
37
41
49
55
60
65
70
80
88
66
42
19
33

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
10
22
36
39
49
39
40
42
45
58
70
82
78
73
67
43

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
4
9
16
15
13
7
38
69
90
92
96
99
100
100
99
99

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
7
5
3
5
6
8
8
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
Very Light Rain
Light Rain
Light Rain
Very Light Rain
None
None

Precipitation Probability (%)

0
0
0
0
0
0
0
0
5
12
22
40
34
9
30
39
48
56
61
66
65
56
37
38

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

19
21
22
23
23
23
23
23
21
18
17
16
16
14
14
14
14
13
13
14
14
14
15
16

Feels Like (°C)

19
20
22
23
24
24
24
24
22
20
18
16
13
14
16
15
15
15
14
14
14
14
14
14

Dew Point (°C)

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

Relative Humidity (%)

41
40
40
40
41
41
42
48
57
63
67
69
74
93
92
92
95
96
96
95
95
89
85
79

Pressure (mb)

1022
1021
1021
1020
1020
1019
1019
1019
1018
1019
1019
1019
1019
1019
1018
1018
1018
1018
1018
1018
1018
1018
1018
1018

Ozone (du)

374
372
372
372
372
372
373
373
374
377
378
376
376
375
373
373
372
372
370
368
366
366
367
367

Saturday 2

Waning Gibbous 98%

22:37

06:21

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

Sun - Rise: 06:11, Set: 21:05, Transit: 13:39. Moon - Rise: 22:37, Set: 06:21. Civil Dark: 21:43 - 05:33. Nautical Dark: 22:32 - 04:44. Astro Dark: 23:32 - 03:42

Total Clouds (% Sky Obscured)

99
99
97
96
94
97
98
100
100
100
100
91
81
69
77
85
93
96
98
100
97
94
91
86

Low Clouds (% Sky Obscured)

49
63
61
59
57
44
33
21
20
19
17
18
17
15
13
14
23
24
25
35
37
39
35
42

Medium Clouds (% Sky Obscured)

26
6
10
5
9
38
67
97
97
98
98
69
43
11
10
10
10
23
37
50
57
67
77
82

High Clouds (% Sky Obscured)

99
99
84
69
57
75
92
100
98
96
95
91
81
69
77
85
93
96
98
100
68
39
8
9

ISS Passover

Visibility (miles)

8
7
6
7
8
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
Very Light Rain
Very Light Rain
None
None
None
None
None
None
None
Very Light Rain
Very Light Rain
Very Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Very Light Rain
None

Precipitation Probability (%)

31
28
36
43
48
45
37
24
21
19
19
28
38
50
58
66
76
91
95
95
95
87
64
36

Precipitation Amount (mm)

0
0
0
0
0.2
0.2
0
0
0
0
0
0
0
0.2
0.2
0.3
0.4
0.6
0.9
1.3
1.2
0.7
0.3
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

17
18
19
19
19
19
18
17
17
15
14
12
11
10
10
9
9
9
9
10
10
12
13
14

Feels Like (°C)

14
15
15
19
18
18
18
17
18
14
14
13
12
12
12
8
8
8
8
8
7
8
9
9

Dew Point (°C)

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

Relative Humidity (%)

73
69
63
64
65
65
67
68
71
72
74
77
79
83
87
87
87
88
87
84
81
77
72
68

Pressure (mb)

1018
1018
1018
1017
1017
1016
1016
1016
1016
1016
1016
1016
1016
1016
1016
1016
1015
1015
1015
1015
1015
1015
1015
1015

Ozone (du)

368
369
370
370
371
371
375
379
382
384
385
387
386
385
384
382
379
377
376
376
375
375
374
374

Sunday 3

Waning Gibbous 95%

23:46

06:52

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

Sun - Rise: 06:09, Set: 21:07, Transit: 13:39. Moon - Rise: 23:46, Set: 06:52. Civil Dark: 21:45 - 05:31. Nautical Dark: 22:34 - 04:41. Astro Dark: 23:35 - 03:39

Total Clouds (% Sky Obscured)

82
77
76
77
74
74
72
71
71
69
68
57
44
29
35
40
49
59
71
81

Low Clouds (% Sky Obscured)

39
38
38
42
42
46
49
53
51
44
39
32
28
24
25
27
26
32
37
46

Medium Clouds (% Sky Obscured)

82
77
76
77
74
74
68
65
58
52
41
28
16
3
10
17
15
7
3
3

High Clouds (% Sky Obscured)

4
5
14
36
41
39
37
24
16
9
3
3
2
3
3
4
5
20
34
49

ISS Passover

Visibility (miles)

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

Precipitation Type

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

Precipitation Probability (%)

20
2
12
8
2
6
3
1
5
4
0
0
2
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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

15
16
17
17
17
18
17
16
15
14
13
12
11
10
10
9
9
9
9
10

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

65
59
57
55
52
51
54
59
62
67
71
75
77
80
82
82
84
85
84
81

Pressure (mb)

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

Ozone (du)

374
375
376
376
377
378
377
376
376
376
375
375
375
375
375
376
377
378
380
381

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

Generated: 27/04/26 12:57:38. Forecast: 27/04/26 to 03/05/26. Timezone: UTC+2.00