Clear Outside v1.0 - International Weather Forecasts For Astronomers

Thursday 28

Waxing Gibbous 94%

19:12

04:03

17 Good
18 Good
19 Good
20 OK
21 OK
22 Bad
23 OK
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

Sun - Rise: 05:36, Set: 21:42, Transit: 13:40. Moon - Rise: 19:12, Set: 04:03. Civil Dark: 22:26 - 04:52. Nautical Dark: 23:28 - 03:49. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

3
4
8
3
30
93
24
78
52
82
100
98
100
100
99
95
81
100
68
66
73
100
100
100

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
6
38
0

Medium Clouds (% Sky Obscured)

2
4
3
0
0
0
0
15
13
58
83
47
47
37
66
61
26
18
26
33
10
16
9
30

High Clouds (% Sky Obscured)

1
1
8
1
10
92
10
56
37
46
100
94
94
93
98
89
65
100
56
51
70
100
100
100

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
5
30
3
6
14
31
12
0
0
0
2
4
0
0
0
1
1
2
2
8
30
9

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)

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

Chance of Frost

Temperature (°C)

27
28
27
27
25
23
21
21
20
20
19
19
19
19
20
22
24
26
28
30
31
32
32
29

Feels Like (°C)

29
29
29
28
27
22
21
20
19
19
19
19
19
20
21
22
24
26
28
30
31
32
32
30

Dew Point (°C)

15
16
17
18
18
17
16
15
15
15
15
15
16
16
17
19
19
20
20
21
21
21
21
18

Relative Humidity (%)

46
47
54
59
65
68
70
71
75
75
76
77
81
84
84
80
73
67
62
59
56
52
52
50

Pressure (mb)

1023
1022
1022
1022
1022
1023
1023
1023
1023
1022
1022
1022
1022
1022
1022
1022
1022
1022
1023
1023
1023
1022
1022
1022

Ozone (du)

339
340
338
337
337
335
337
334
333
333
335
335
335
334
338
339
335
332
331
331
330
328
328
329

Friday 29

Waxing Gibbous 98%

20:25

04:25

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 OK
07 Bad
08 Bad
09 Bad
10 Bad
11 Bad
12 Bad
13 OK
14 Bad
15 Bad
16 Bad

Sun - Rise: 05:35, Set: 21:43, Transit: 13:40. Moon - Rise: 20:25, Set: 04:25. Civil Dark: 22:27 - 04:51. Nautical Dark: 23:30 - 03:48. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

100
100
99
100
100
100
100
84
71
67
70
46
37
30
98
99
99
97
100
78
47
50
65
48

Low Clouds (% Sky Obscured)

0
3
0
0
0
0
0
0
0
0
0
0
0
0
7
27
0
0
0
3
0
0
22
23

Medium Clouds (% Sky Obscured)

29
36
95
97
96
99
100
80
71
67
70
46
31
11
21
12
12
18
18
24
28
15
33
24

High Clouds (% Sky Obscured)

100
100
99
100
100
100
64
45
12
5
5
0
0
0
91
97
95
90
100
58
21
36
12
10

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
6
7
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
Light Rain
None
None
None
None
Very Light Rain
None
None
None
Very Light Rain
Light Rain
Light Rain
None
None
None
None
None
None
None

Precipitation Probability (%)

3
24
7
1
26
59
10
5
10
46
51
33
11
10
53
60
50
8
4
0
0
0
0
14

Precipitation Amount (mm)

0
0
0
0
0
0.5
0
0
0
0
0.2
0
0
0
0.3
0.4
0.4
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

30
30
30
28
25
23
21
21
20
19
19
18
17
17
17
18
19
21
23
24
26
28
29
29

Feels Like (°C)

30
31
30
30
26
24
23
22
20
19
19
19
19
19
20
20
20
22
23
25
26
28
29
29

Dew Point (°C)

20
20
22
23
21
20
20
19
18
18
17
16
16
16
16
15
15
15
15
16
17
18
19
19

Relative Humidity (%)

53
56
62
72
79
87
91
89
91
89
89
90
92
92
89
82
75
69
62
59
56
54
53
53

Pressure (mb)

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

Ozone (du)

327
326
325
325
326
326
327
329
330
336
339
340
340
339
336
334
332
332
333
334
334
334
334
335

Saturday 30

Waxing Gibbous 100%

21:36

04:54

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
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad

Sun - Rise: 05:34, Set: 21:45, Transit: 13:40. Moon - Rise: 21:36, Set: 04:54. Civil Dark: 22:28 - 04:50. Nautical Dark: 23:32 - 03:46. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

46
100
100
100
100
79
37
95
67
100
100
100
100
74
100
89
67
99
100
100
97
98
99
100

Low Clouds (% Sky Obscured)

15
67
0
0
0
0
0
0
0
27
84
43
30
24
39
35
27
9
27
60
69
59
52
44

Medium Clouds (% Sky Obscured)

9
75
52
0
2
13
20
61
46
88
100
87
55
74
26
12
22
24
22
26
27
28
99
100

High Clouds (% Sky Obscured)

24
100
100
100
100
69
23
83
38
100
100
100
100
20
100
81
67
87
100
100
68
79
89
100

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
2
9
9
9
7
9
9
6
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
Light Rain
None
None
Very Light Rain
None
Light Rain
Light Rain
None
None
Light Rain
Light Rain
Light Rain
Light Rain
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

7
92
35
17
55
32
63
77
12
3
95
95
87
90
48
31
34
13
8
2
1
2
2
1

Precipitation Amount (mm)

0
2
0
0
0.2
0
0.4
0.5
0
0
1.9
0.9
0.6
0.7
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

5
4
7
7
7
6
5
3
1
3
3
3
2
5
5
6
6
7
8
10
11
12
12
12

Chance of Frost

Temperature (°C)

29
29
23
22
22
21
20
20
20
20
20
19
18
17
17
17
18
19
20
20
21
21
21
21

Feels Like (°C)

29
29
23
22
21
20
21
21
21
20
20
20
20
18
17
17
18
20
19
18
18
19
18
17

Dew Point (°C)

19
19
14
16
16
15
15
16
16
17
16
16
17
16
16
15
14
14
13
11
11
11
9
9

Relative Humidity (%)

54
55
58
68
69
70
70
77
80
82
80
82
89
93
95
89
79
72
67
57
54
53
47
48

Pressure (mb)

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

Ozone (du)

337
338
338
339
340
342
344
342
341
342
345
347
346
347
352
360
359
351
345
343
342
342
343
345

Sunday 31

Full Moon 100%

22:41

05:33

17 Bad
18 Bad
19 Bad
20 Bad
21 Bad
22 OK
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

Sun - Rise: 05:33, Set: 21:46, Transit: 13:40. Moon - Rise: 22:41, Set: 05:33. Civil Dark: 22:30 - 04:49. Nautical Dark: 23:34 - 03:45. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

100
100
100
86
72
41
47
68
82
85
67
66
62
64
69
70
74
97
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

47
50
58
37
17
0
19
39
58
60
58
59
54
48
40
48
53
50
69
83
96
81
76
68

Medium Clouds (% Sky Obscured)

98
95
93
86
49
16
14
11
11
11
14
14
20
22
17
26
36
45
56
49
41
51
52
53

High Clouds (% Sky Obscured)

100
96
80
57
40
1
0
1
0
2
3
5
9
12
16
44
72
97
100
100
100
100
100
100

ISS Passover

Visibility (miles)

9
9
9
8
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
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 (%)

4
11
39
39
23
4
2
2
4
3
2
0
0
0
0
0
0
7
19
9
3
5
11
17

Precipitation Amount (mm)

0
0
0
0.2
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
9
9
11
9
8
8
8
9
9
9
8
8
8
8
9
10
11
11
11
11
11
11
11

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

10
10
11
14
15
14
13
13
13
12
12
12
12
12
12
11
11
11
11
11
10
10
11
11

Relative Humidity (%)

50
54
58
76
82
86
89
90
90
89
90
92
95
95
92
83
77
67
63
60
56
56
56
57

Pressure (mb)

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

Ozone (du)

344
350
357
363
363
363
365
359
354
350
349
348
346
345
345
343
341
342
341
340
338
337
336
334

Monday 1

Waning Gibbous 97%

23:36

06:24

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
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad

Sun - Rise: 05:33, Set: 21:47, Transit: 13:40. Moon - Rise: 23:36, Set: 06:24. Civil Dark: 22:31 - 04:48. Nautical Dark: 23:35 - 03:43. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

100
100
100
100
99
99
99
99
100
100
100
100
96
92
88
98
99
100
100
100
100
96
92
88

Low Clouds (% Sky Obscured)

79
90
96
65
61
59
58
55
66
77
86
87
83
79
54
62
71
81
81
83
82
72
59
45

Medium Clouds (% Sky Obscured)

67
85
70
89
97
95
97
98
100
100
100
100
89
81
35
82
85
85
84
85
87
89
92
88

High Clouds (% Sky Obscured)

100
100
100
68
33
0
33
67
100
100
100
100
70
40
10
33
67
100
100
100
100
67
37
5

ISS Passover

Visibility (miles)

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

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
Very Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Very Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain

Precipitation Probability (%)

34
37
45
45
40
35
38
50
64
86
95
95
95
89
76
69
81
90
94
93
95
95
95
95

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0.3
0.4
1.4
2.4
0.7
0.5
0.4
0.3
0.4
0.6
0.6
0.5
0.6
0.7
0.8
0.9

Wind Speed/Direction (mph)

10
9
9
8
7
8
7
8
8
9
8
9
10
10
10
11
10
10
10
11
12
14
12
11

Chance of Frost

Temperature (°C)

19
19
19
18
17
16
16
16
16
16
16
15
15
15
15
16
16
16
15
17
18
19
18
18

Feels Like (°C)

17
17
17
17
16
15
15
15
15
15
15
14
14
14
14
15
15
14
15
15
14
14
17
17

Dew Point (°C)

11
12
12
13
13
13
13
13
13
13
12
14
14
14
14
15
15
15
15
15
15
14
14
15

Relative Humidity (%)

59
62
66
71
77
81
82
82
83
81
78
93
95
93
93
90
93
93
95
89
82
76
77
80

Pressure (mb)

1014
1013
1013
1012
1012
1011
1011
1010
1009
1008
1008
1007
1006
1006
1006
1005
1006
1006
1006
1006
1005
1005
1005
1005

Ozone (du)

334
333
333
333
335
339
343
346
348
351
353
354
359
366
367
367
368
368
369
371
374
376
380
384

Tuesday 2

Waning Gibbous 93%

00:19

07:26

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
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad

Sun - Rise: 05:32, Set: 21:48, Transit: 13:40. Moon - Rise: 00:19, Set: 07:26. Civil Dark: 22:32 - 04:47. Nautical Dark: 23:37 - 03:42. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

80
72
62
71
83
94
85
71
51
43
43
44
55
69
84
88
93
96
96
95
95
93
93
93

Low Clouds (% Sky Obscured)

39
34
30
29
27
23
17
15
10
11
18
26
46
63
79
77
75
67
68
74
78
74
69
65

Medium Clouds (% Sky Obscured)

80
72
62
50
36
21
16
10
6
5
3
2
2
3
3
3
3
5
6
9
9
15
24
27

High Clouds (% Sky Obscured)

10
9
9
38
68
94
85
71
51
43
43
44
48
23
0
25
46
61
59
57
60
60
60
31

ISS Passover

Visibility (miles)

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

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

Precipitation Probability (%)

90
70
54
49
41
28
22
13
0
1
1
0
5
12
18
31
40
48
58
63
64
63
67
72

Precipitation Amount (mm)

0.6
0.3
0.2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.3
0.3
0.3
0.3
0.3
0.4

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

16
16
16
16
15
15
14
14
14
13
11
12
12
12
12
11
12
12
13
13
13
13
17
16

Dew Point (°C)

14
14
14
14
13
13
12
12
11
11
11
11
11
12
12
13
13
14
14
14
13
13
12
11

Relative Humidity (%)

79
81
83
85
87
90
93
95
95
96
96
98
98
96
96
95
92
90
89
82
76
70
65
62

Pressure (mb)

1005
1005
1005
1005
1005
1005
1005
1005
1005
1005
1005
1005
1005
1005
1005
1005
1005
1005
1005
1004
1004
1004
1004
1003

Ozone (du)

387
391
394
398
397
396
395
396
398
400
400
400
400
392
385
378
372
367
362
359
357
355
354
352

Wednesday 3

Waning Gibbous 88%

00:51

08:35

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
12 Bad
13 Bad

Sun - Rise: 05:31, Set: 21:49, Transit: 13:41. Moon - Rise: 00:51, Set: 08:35. Civil Dark: 22:33 - 04:47. Nautical Dark: 23:39 - 03:41. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

92
92
91
93
95
96
94
91
90
86
84
81
77
74
72
75
73
66
72
78
83

Low Clouds (% Sky Obscured)

61
57
54
59
61
64
71
75
79
80
81
81
76
71
64
60
56
52
49
46
47

Medium Clouds (% Sky Obscured)

33
39
46
55
62
65
39
28
19
13
7
0
0
0
0
4
6
5
5
5
5

High Clouds (% Sky Obscured)

60
35
55
57
58
63
55
52
65
86
83
81
57
32
4
2
1
0
3
7
10

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
8
8
8
9

Fog (%)

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

Precipitation Type

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

Precipitation Probability (%)

67
67
71
66
59
50
44
36
27
32
35
37
38
34
24
27
31
35
45
51
53

Precipitation Amount (mm)

0.3
0.2
0.3
0.3
0.2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

18
17
16
16
15
14
14
14
14
13
13
13
13
13
13
13
14
16
17
17
17

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

58
65
71
79
85
90
95
95
93
95
93
93
92
92
89
87
80
74
67
65
62

Pressure (mb)

1003
1003
1003
1002
1002
1003
1003
1003
1003
1003
1003
1003
1003
1003
1003
1004
1004
1004
1004
1004
1003

Ozone (du)

351
350
349
348
349
350
351
352
354
355
358
360
362
368
374
379
385
391
397
396
396

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

Generated: 28/05/26 16:46:36. Forecast: 28/05/26 to 03/06/26. Timezone: UTC+2.00