Clear Outside v1.0 - International Weather Forecasts For Astronomers

Friday 25

Waxing Gibbous 99%

18:57

05:54

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

Sun - Rise: 07:34, Set: 19:33, Transit: 13:34. Moon - Rise: 18:57, Set: 05:54. Civil Dark: 20:06 - 07:01. Nautical Dark: 20:45 - 06:23. Astro Dark: 21:25 - 05:44

Total Clouds (% Sky Obscured)

85
87
64
48
14
4
4
3
0
0
0
0
0
0
0
0
0
0
0
16
55
100
95
50

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)

1
1
3
4
4
1
0
0
0
0
0
0
0
0
0
0
0
0
0
16
28
27
15
0

High Clouds (% Sky Obscured)

85
46
28
39
9
3
3
3
0
0
0
0
0
0
0
0
0
0
0
0
40
100
91
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 (%)

0
1
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)

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

Chance of Frost

Temperature (°C)

10
9
9
11
15
18
20
21
23
24
24
24
24
23
20
18
17
17
16
16
16
15
15
15

Feels Like (°C)

8
7
9
11
13
17
19
21
22
23
24
24
25
24
21
18
17
16
15
14
15
14
12
12

Dew Point (°C)

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

Relative Humidity (%)

68
69
69
63
53
45
39
34
31
29
29
29
35
40
43
43
43
41
40
39
39
39
40
40

Pressure (mb)

1022
1022
1021
1021
1022
1021
1021
1021
1020
1019
1018
1018
1018
1018
1018
1018
1018
1018
1017
1017
1017
1017
1017
1017

Ozone (du)

280
280
280
281
279
279
279
280
281
282
283
284
284
284
284
285
287
287
287
286
285
284
282
281

Saturday 26

Full Moon 100%

19:09

07:12

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
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad
01 Bad
02 Bad
03 Bad
04 Bad
05 Bad

Sun - Rise: 07:35, Set: 19:31, Transit: 13:33. Moon - Rise: 19:09, Set: 07:12. Civil Dark: 20:04 - 07:03. Nautical Dark: 20:42 - 06:24. Astro Dark: 21:22 - 05:46

Total Clouds (% Sky Obscured)

67
86
63
92
90
81
59
85
96
100
100
100
100
100
100
98
95
81
93
99
100
97
84
89

Low Clouds (% Sky Obscured)

11
24
15
4
13
16
30
35
34
32
37
38
22
23
12
13
16
15
19
22
16
12
14
21

Medium Clouds (% Sky Obscured)

0
0
15
41
75
47
41
75
88
79
77
80
89
86
77
82
79
53
66
64
75
53
66
83

High Clouds (% Sky Obscured)

55
62
54
68
65
42
14
48
85
100
100
100
100
100
100
95
85
68
83
93
99
94
68
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 (%)

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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

2
4
7
9
9
7
7
7
8
9
9
11
12
13
13
12
12
12
11
11
11
11
10
9

Relative Humidity (%)

43
51
63
69
63
51
46
44
45
48
51
56
64
70
76
78
80
82
84
84
87
86
86
81

Pressure (mb)

1017
1018
1018
1019
1020
1020
1020
1020
1021
1021
1021
1021
1021
1022
1022
1022
1022
1022
1022
1022
1022
1021
1021
1020

Ozone (du)

281
281
281
280
281
282
282
283
284
285
286
287
288
289
289
289
288
287
286
287
287
287
287
288

Sunday 27

Waning Gibbous 98%

19:23

08:32

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
20 Bad
21 OK
22 Bad
23 Bad
00 Bad
01 Bad
02 Bad
03 Bad
04 Bad
05 Bad

Sun - Rise: 07:37, Set: 19:29, Transit: 13:33. Moon - Rise: 19:23, Set: 08:32. Civil Dark: 20:02 - 07:04. Nautical Dark: 20:40 - 06:26. Astro Dark: 21:20 - 05:48

Total Clouds (% Sky Obscured)

90
89
90
98
90
91
86
99
100
93
100
91
77
70
69
47
53
53
65
64
74
84
94
94

Low Clouds (% Sky Obscured)

32
29
29
29
22
0
0
0
0
0
0
0
2
13
51
4
18
9
15
2
0
0
0
0

Medium Clouds (% Sky Obscured)

70
16
32
77
44
59
72
86
80
84
60
51
57
54
61
45
53
50
27
64
32
38
77
76

High Clouds (% Sky Obscured)

41
46
55
60
69
82
64
83
72
65
100
84
53
53
51
41
22
53
65
64
66
77
88
86

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
4
9

Fog (%)

0
0
4
6
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
Very Light Rain
None

Precipitation Probability (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
2
1
0
16
47
22

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
0.3
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

12
11
12
13
14
16
18
20
22
23
23
24
23
22
20
19
18
17
17
17
17
17
17
17

Feels Like (°C)

11
11
11
12
13
15
17
19
21
22
22
22
23
22
19
17
16
15
15
15
15
15
15
15

Dew Point (°C)

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

Relative Humidity (%)

80
79
76
69
58
51
45
42
39
36
33
33
40
44
45
42
43
42
46
47
45
48
51
65

Pressure (mb)

1020
1020
1019
1019
1019
1019
1019
1018
1017
1017
1016
1015
1015
1015
1015
1015
1015
1015
1015
1015
1015
1015
1015
1015

Ozone (du)

289
290
289
287
287
287
285
284
284
283
282
281
281
280
280
280
280
281
281
281
281
281
282
282

Monday 28

Waning Gibbous 93%

19:40

09:55

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
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad
01 Bad
02 Bad
03 Bad
04 Bad
05 Bad

Sun - Rise: 07:39, Set: 19:27, Transit: 13:33. Moon - Rise: 19:40, Set: 09:55. Civil Dark: 19:59 - 07:06. Nautical Dark: 20:38 - 06:27. Astro Dark: 21:17 - 05:50

Total Clouds (% Sky Obscured)

94
94
94
94
94
96
98
100
100
100
100
100
100
99
100
100
100
95
89
81
88
94
100
100

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
2
6
0
12
3
12
1
0
0
0
3
0
0
0
0
0

Medium Clouds (% Sky Obscured)

78
74
82
82
31
70
56
87
90
91
92
86
88
83
89
89
94
57
53
61
38
27
21
23

High Clouds (% Sky Obscured)

86
87
86
85
85
89
94
100
100
100
100
100
99
99
99
100
88
94
82
63
70
84
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 (%)

41
9
1
0
0
1
0
0
1
4
18
6
4
2
3
3
1
19
15
4
17
20
27
25

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)

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

Chance of Frost

Temperature (°C)

17
17
17
19
20
22
23
25
26
25
25
24
23
22
21
20
19
19
18
18
18
18
18
18

Feels Like (°C)

15
16
16
17
20
21
23
24
25
24
24
24
23
22
21
19
19
17
18
18
18
18
18
17

Dew Point (°C)

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

Relative Humidity (%)

65
71
69
63
58
53
49
44
42
41
43
50
56
60
60
60
61
63
68
69
71
73
74
74

Pressure (mb)

1015
1016
1016
1016
1017
1017
1017
1017
1018
1018
1018
1018
1018
1018
1019
1018
1019
1019
1019
1019
1018
1018
1018
1018

Ozone (du)

281
280
281
282
283
284
284
284
282
281
282
282
283
284
284
284
283
283
284
284
284
285
285
285

Tuesday 29

Waning Gibbous 86%

20:02

11:21

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

Sun - Rise: 07:40, Set: 19:24, Transit: 13:32. Moon - Rise: 20:02, Set: 11:21. Civil Dark: 19:57 - 07:07. Nautical Dark: 20:35 - 06:29. Astro Dark: 21:15 - 05:52

Total Clouds (% Sky Obscured)

100
100
81
63
45
34
21
25
25
20
20
25
30
35
91
91
88
82
70
62
68
78
86
77

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
25
30
20
38
51
67
48
28
9
6
3
0
0

Medium Clouds (% Sky Obscured)

37
21
29
63
45
34
3
3
25
20
20
25
30
35
70
74
79
58
36
14
36
58
80
64

High Clouds (% Sky Obscured)

100
100
81
63
45
34
21
25
25
20
20
25
30
35
78
60
39
56
70
62
65
66
65
50

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
8
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
1
0
0
0
0
0
0
0
0
0
0
4
5
20
18
18
20
15
6
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)

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

Chance of Frost

Temperature (°C)

18
18
18
20
22
24
26
28
29
29
30
30
28
26
24
22
21
20
20
19
19
19
20
20

Feels Like (°C)

17
17
17
19
20
21
23
25
27
27
28
29
28
27
23
22
22
22
21
21
21
20
20
20

Dew Point (°C)

14
13
14
14
13
13
12
13
14
13
14
15
16
16
16
15
15
15
15
14
14
14
14
14

Relative Humidity (%)

76
74
76
67
55
47
42
40
38
37
38
41
48
56
60
64
68
74
72
72
72
71
70
69

Pressure (mb)

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

Ozone (du)

285
286
288
289
290
291
291
290
289
287
286
286
285
285
285
285
286
286
286
286
286
286
286
286

Wednesday 30

Waning Gibbous 77%

20:32

12:48

06 Bad
07 Bad
08 OK
09 OK
10 Good
11 OK
12 OK
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

Sun - Rise: 07:42, Set: 19:22, Transit: 13:32. Moon - Rise: 20:32, Set: 12:48. Civil Dark: 19:55 - 07:09. Nautical Dark: 20:33 - 06:31. Astro Dark: 21:12 - 05:53

Total Clouds (% Sky Obscured)

69
61
44
26
8
17
31
42
64
82
100
100
99
98
99
99
100
100
100
100
100
100
100
90

Low Clouds (% Sky Obscured)

0
0
1
1
1
1
0
0
13
28
46
59
69
70
67
60
53
51
53
50
57
63
69
56

Medium Clouds (% Sky Obscured)

49
33
24
15
6
16
26
36
49
61
73
82
86
90
88
87
85
91
96
99
99
98
97
78

High Clouds (% Sky Obscured)

36
25
22
11
3
12
24
42
63
82
100
98
97
95
97
98
100
100
100
100
100
100
100
84

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
8
7
6
7
8
9
9
9
9
7
6
4
6
7
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
Very Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Very Light Rain

Precipitation Probability (%)

0
0
0
0
0
0
1
2
15
25
36
45
51
53
53
52
48
65
78
92
95
95
95
69

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.3
0.4
0.6
0.8
0.8
0.6
0.3

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

20
20
20
21
23
25
26
27
28
28
27
26
25
24
23
22
22
22
21
20
20
19
19
19

Feels Like (°C)

20
20
20
19
19
20
21
23
24
27
27
27
25
24
23
21
21
22
22
22
22
19
19
18

Dew Point (°C)

13
12
12
12
12
13
13
14
15
18
21
23
23
22
22
21
21
21
20
19
18
18
17
17

Relative Humidity (%)

66
62
59
55
50
47
45
44
44
55
69
86
88
89
92
92
94
95
92
91
89
91
89
88

Pressure (mb)

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

Ozone (du)

286
285
285
284
284
283
282
281
281
280
279
278
278
278
278
279
279
280
280
279
279
280
281
281

Thursday 1

Waning Gibbous 74%

21:16

14:11

06 Bad
07 Bad
08 Bad
09 Bad
10 OK
11 OK
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

Sun - Rise: 07:43, Set: 19:20, Transit: 13:32. Moon - Rise: 21:16, Set: 14:11. Civil Dark: 19:53 - 07:11. Nautical Dark: 20:31 - 06:32. Astro Dark: 21:10 - 05:55

Total Clouds (% Sky Obscured)

80
70
55
41
35
45
53
71
72
78
87
91
95
98
98
99
99
100
100
100

Low Clouds (% Sky Obscured)

38
19
16
12
10
18
26
34
40
47
53
45
38
30
26
21
16
19
22
24

Medium Clouds (% Sky Obscured)

59
40
32
25
16
13
9
7
20
33
47
38
28
14
22
26
30
28
30
29

High Clouds (% Sky Obscured)

66
45
31
20
9
26
43
56
57
59
58
60
60
63
77
88
98
99
99
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

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 (%)

42
6
15
14
4
4
4
1
6
9
10
10
7
10
22
23
27
35
42
41

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)

5
4
4
4
4
4
4
5
5
5
6
7
6
5
4
3
4
5
5
6

Chance of Frost

Temperature (°C)

18
18
17
18
20
20
22
23
24
24
24
25
24
23
22
21
20
19
18
17

Feels Like (°C)

18
19
19
18
19
19
20
20
21
26
26
25
25
25
25
19
19
19
18
18

Dew Point (°C)

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

Relative Humidity (%)

90
90
92
83
77
70
63
56
51
51
51
51
54
57
61
64
68
72
74
76

Pressure (mb)

1019
1019
1019
1020
1020
1020
1020
1019
1019
1019
1018
1018
1018
1018
1018
1018
1019
1019
1019
1020

Ozone (du)

284
286
289
289
289
289
289
288
287
287
288
288
289
290
291
292
294
295
298
300

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

Generated: 25/09/26 06:19:27. Forecast: 25/09/26 to 01/10/26. Timezone: UTC+2.00