Clear Outside v1.0 - International Weather Forecasts For Astronomers

Sunday 31

Full Moon 100%

22:41

05:33

17 Bad
18 Bad
19 Bad
20 Bad
21 Bad
22 Bad
23 OK
00 Bad
01 Bad
02 Bad
03 Bad
04 Bad
05 Bad
06 Bad
07 Bad
08 Good
09 OK
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)

96
97
96
99
64
54
27
52
54
74
58
57
56
43
50
18
26
100
100
100
98
98
98
94

Low Clouds (% Sky Obscured)

52
56
43
44
6
7
0
1
11
26
25
35
29
32
34
6
3
22
71
40
48
73
40
44

Medium Clouds (% Sky Obscured)

96
91
96
77
62
34
20
31
25
32
25
24
22
5
0
0
0
0
0
22
78
86
36
33

High Clouds (% Sky Obscured)

96
16
96
91
0
0
0
0
0
0
0
0
0
1
17
12
25
100
100
100
89
79
92
50

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 (%)

12
24
19
6
0
4
0
0
0
0
0
0
0
0
0
0
0
17
17
7
12
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)

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

Chance of Frost

Temperature (°C)

21
20
20
19
19
18
17
16
15
15
14
14
13
13
13
14
16
18
19
20
21
21
22
22

Feels Like (°C)

19
18
18
17
17
17
17
16
16
14
13
14
14
14
14
15
16
17
18
19
19
20
20
21

Dew Point (°C)

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

Relative Humidity (%)

63
67
74
70
73
78
82
86
89
84
84
90
92
92
87
80
75
71
68
62
57
53
52
50

Pressure (mb)

1016
1016
1016
1016
1016
1017
1017
1017
1017
1017
1017
1017
1017
1017
1018
1018
1018
1018
1018
1018
1017
1017
1016
1016

Ozone (du)

348
355
359
360
363
366
368
369
364
356
353
353
349
348
348
347
345
346
345
344
343
340
339
338

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
98
100
100
100
100
100
100
100
100
100
100
100
100
100
82
100
100
100
100
100
100
99
100

Low Clouds (% Sky Obscured)

54
83
39
41
23
44
33
11
12
53
39
23
73
41
40
41
73
81
63
48
90
71
40
27

Medium Clouds (% Sky Obscured)

61
81
98
36
89
68
84
90
93
89
71
96
71
22
96
82
97
81
88
78
92
98
84
100

High Clouds (% Sky Obscured)

99
84
95
100
100
100
100
100
100
100
100
100
100
100
100
16
82
78
100
100
100
100
9
100

ISS Passover

Visibility (miles)

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

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

Precipitation Probability (%)

0
0
2
0
0
0
0
0
0
3
20
24
62
81
73
30
53
69
87
64
95
95
64
49

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0.2
0.3
0.2
0
0
0.4
0.6
0
1.9
1.6
0.2
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

22
22
22
21
20
19
18
18
18
17
18
18
18
17
17
17
18
19
18
18
20
18
16
17

Feels Like (°C)

21
21
21
20
20
18
18
17
16
16
16
16
16
15
14
16
17
17
16
17
17
17
14
14

Dew Point (°C)

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

Relative Humidity (%)

53
57
61
65
71
73
75
73
73
74
77
77
76
78
79
92
88
82
82
77
70
89
69
61

Pressure (mb)

1015
1015
1014
1014
1013
1013
1013
1012
1011
1010
1010
1009
1008
1008
1008
1007
1007
1007
1007
1006
1006
1006
1005
1005

Ozone (du)

337
337
337
338
338
339
341
343
344
345
348
349
352
357
360
367
366
369
371
373
372
374
381
379

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)

100
100
100
100
100
100
100
99
91
74
86
79
80
90
81
69
75
72
73
88
92
88
87
97

Low Clouds (% Sky Obscured)

67
45
45
29
34
34
38
45
57
59
73
71
71
75
72
65
51
43
52
61
57
57
49
66

Medium Clouds (% Sky Obscured)

100
100
100
100
100
94
100
86
17
18
41
35
16
23
3
0
15
12
10
14
22
22
18
21

High Clouds (% Sky Obscured)

100
100
100
100
100
100
100
99
91
21
0
0
0
0
0
0
0
1
0
1
0
26
56
83

ISS Passover

Visibility (miles)

9
7
9
9
9
9
9
9
9
9
9
9
7
2
7
9
9
8
8
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

Very Light Rain
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
None

Precipitation Probability (%)

69
86
58
5
0
0
0
0
0
0
0
0
1
2
1
1
19
33
27
23
8
3
2
4

Precipitation Amount (mm)

0.3
0.6
0.3
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

12
12
13
13
12
12
12
11
12
12
12
12
12
12
12
13
13
13
12
12
12
12
11
11

Relative Humidity (%)

70
74
79
81
80
83
84
86
90
93
95
96
95
95
95
92
86
78
72
66
62
63
58
56

Pressure (mb)

1005
1005
1006
1006
1006
1007
1007
1007
1008
1008
1008
1008
1008
1009
1009
1010
1010
1010
1010
1010
1010
1010
1010
1010

Ozone (du)

383
382
387
396
390
390
391
396
399
402
402
404
403
401
389
379
374
369
364
360
358
356
353
349

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
14 Bad
15 Bad
16 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)

99
100
100
99
99
98
97
99
100
100
100
99
96
92
88
82
74
67
78
86
94
96
98
100

Low Clouds (% Sky Obscured)

72
83
100
85
70
54
41
33
19
29
40
51
54
60
65
61
60
56
57
62
69
68
52
33

Medium Clouds (% Sky Obscured)

26
48
93
22
99
98
55
87
95
97
98
25
33
33
23
18
10
55
31
68
79
72
70
68

High Clouds (% Sky Obscured)

88
92
95
73
52
38
50
78
100
95
98
99
76
52
29
19
10
0
16
36
52
68
84
100

ISS Passover

Visibility (miles)

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

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

Precipitation Probability (%)

2
4
3
3
3
2
11
19
38
21
45
40
39
58
73
70
53
41
34
25
36
52
55
68

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

14
13
10
11
13
13
13
13
13
14
15
13
14
13
13
12
12
11
14
15
16
15
14
14

Chance of Frost

Temperature (°C)

20
19
19
18
18
17
17
17
17
16
16
16
16
16
16
16
16
17
18
18
18
18
18
18

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

62
60
63
68
72
72
72
73
73
77
79
86
90
93
90
89
86
78
71
60
59
59
66
60

Pressure (mb)

1010
1009
1009
1008
1008
1008
1007
1007
1006
1005
1005
1004
1004
1004
1004
1004
1004
1004
1004
1004
1005
1005
1005
1005

Ozone (du)

344
344
342
342
342
345
349
350
353
360
362
372
372
370
367
367
366
366
366
366
366
366
368
373

Thursday 4

Waning Gibbous 81%

01:15

09:49

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

Sun - Rise: 05:31, Set: 21:50, Transit: 13:41. Moon - Rise: 01:15, Set: 09:49. Civil Dark: 22:35 - 04:46. Nautical Dark: 23:40 - 03:40. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

88
76
67
67
67
63
61
55
57
63
72
82
51
47
43
39
45
49
60
69
78
76
72
68

Low Clouds (% Sky Obscured)

49
35
26
53
51
24
50
53
57
63
68
37
39
37
35
34
38
45
46
46
49
41
37
31

Medium Clouds (% Sky Obscured)

60
57
55
50
55
55
50
50
55
58
62
67
24
15
11
12
22
14
13
16
19
20
20
22

High Clouds (% Sky Obscured)

68
37
5
5
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

ISS Passover

Visibility (miles)

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

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

Precipitation Probability (%)

75
77
84
61
18
22
18
42
21
13
4
0
1
1
0
7
7
4
21
31
41
52
58
60

Precipitation Amount (mm)

0.5
0.5
0.6
0.3
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.2
0.3

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

61
73
77
82
86
84
86
86
89
89
89
87
85
85
83
77
75
71
69
70
73
75
75
75

Pressure (mb)

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

Ozone (du)

372
366
367
362
365
364
368
371
375
380
385
389
395
410
414
412
403
395
386
385
384
383
382
381

Friday 5

Waning Gibbous 72%

01:33

11:03

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

Sun - Rise: 05:30, Set: 21:51, Transit: 13:41. Moon - Rise: 01:33, Set: 11:03. Civil Dark: 22:36 - 04:45. Nautical Dark: 23:42 - 03:38. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

60
52
41
36
32
29
44
53
53
38
28
18
23
30
34
40
36
38
49
65
80
87
93
100

Low Clouds (% Sky Obscured)

28
26
24
17
12
9
15
11
5
3
2
0
0
0
0
0
0
0
1
3
4
9
13
17

Medium Clouds (% Sky Obscured)

22
23
24
36
32
29
44
42
23
16
8
0
0
0
0
0
0
0
4
13
22
25
32
30

High Clouds (% Sky Obscured)

2
3
5
6
6
3
27
52
53
38
28
18
23
17
4
9
16
28
33
38
38
39
39
70

ISS Passover

Visibility (miles)

4
6
7
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

Very Light Rain
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 (%)

59
54
44
39
29
10
8
6
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Amount (mm)

0.2
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)

12
11
9
7
7
7
6
6
6
5
5
5
5
5
5
5
5
5
6
6
6
6
6
6

Chance of Frost

Temperature (°C)

16
16
16
16
14
13
12
11
10
9
9
9
9
10
11
12
14
15
17
18
19
20
20
20

Feels Like (°C)

13
13
13
13
13
12
12
12
11
10
8
8
8
8
8
8
12
12
13
13
13
14
19
19

Dew Point (°C)

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

Relative Humidity (%)

77
75
74
72
73
75
77
78
80
81
82
85
87
82
78
75
70
65
61
57
52
49
47
46

Pressure (mb)

1015
1015
1016
1016
1017
1018
1019
1019
1019
1020
1020
1020
1021
1021
1021
1022
1022
1022
1022
1022
1022
1021
1021
1021

Ozone (du)

380
379
378
377
382
387
392
393
394
395
386
377
368
366
363
361
361
360
359
359
359
359
359
360

Saturday 6

Waning Gibbous 62%

01:48

12:18

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: 05:30, Set: 21:52, Transit: 13:41. Moon - Rise: 01:48, Set: 12:18. Civil Dark: 22:37 - 04:45. Nautical Dark: 23:43 - 03:37. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
98
95
92
82
72
61
66
70
74
81
89
100
100
100
100

Low Clouds (% Sky Obscured)

24
28
29
18
7
2
2
1
0
0
0
0
0
0
0
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

26
22
19
34
51
64
40
25
9
20
32
41
39
25
17
13
9
5
5
5
5

High Clouds (% Sky Obscured)

60
88
99
99
100
100
95
88
77
49
29
8
22
36
51
67
83
100
99
99
97

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

Fog (%)

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

Precipitation Probability (%)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

21
20
20
20
19
17
16
15
14
14
13
13
13
14
15
16
18
19
21
22
23

Feels Like (°C)

18
19
19
18
18
18
19
18
17
16
13
13
13
13
13
13
17
17
18
17
18

Dew Point (°C)

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

Relative Humidity (%)

46
49
54
58
61
64
67
68
70
71
72
72
74
73
69
67
62
57
53
50
48

Pressure (mb)

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

Ozone (du)

360
359
358
358
359
361
362
363
363
363
361
360
358
356
354
352
351
351
350
350
349

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

Generated: 31/05/26 17:07:37. Forecast: 31/05/26 to 06/06/26. Timezone: UTC+2.00