Clear Outside v1.0 - International Weather Forecasts For Astronomers

Friday 25

Waxing Gibbous 99%

18:55

05:52

02 Bad
03 Bad
04 Bad
05 Bad
06 Bad
07 Bad
08 Bad
09 OK
10 Bad
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

Sun - Rise: 07:32, Set: 19:31, Transit: 13:31. Moon - Rise: 18:55, Set: 05:52. Civil Dark: 20:04 - 06:59. Nautical Dark: 20:42 - 06:21. Astro Dark: 21:22 - 05:41

Total Clouds (% Sky Obscured)

89
92
92
74
100
96
64
19
57
6
5
2
2
0
3
0
0
3
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
5
0
0
0
0
3
11
2
2
0
0
0
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

89
92
92
71
100
96
64
13
53
5
2
2
2
0
2
0
0
2
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)

2
2
2
5
5
5
5
5
7
7
6
6
6
6
5
4
3
1
2
3
4
5
6
6

Chance of Frost

Temperature (°C)

11
10
10
9
9
9
9
11
14
17
19
21
22
23
24
24
24
22
19
17
15
15
14
14

Feels Like (°C)

9
7
7
7
6
5
6
9
13
15
19
20
22
23
23
24
25
24
20
16
14
13
12
12

Dew Point (°C)

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

Relative Humidity (%)

71
71
73
74
73
70
70
65
52
45
40
35
31
28
26
26
35
39
41
42
42
42
43
44

Pressure (mb)

1024
1023
1023
1023
1022
1022
1022
1022
1022
1022
1022
1021
1020
1019
1019
1019
1018
1018
1018
1018
1018
1018
1018
1018

Ozone (du)

282
282
282
282
281
281
282
281
282
282
282
282
282
283
283
284
284
285
284
285
285
287
288
288

Saturday 26

Full Moon 100%

19:07

07:10

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

Sun - Rise: 07:33, Set: 19:29, Transit: 13:31. Moon - Rise: 19:07, Set: 07:10. Civil Dark: 20:02 - 07:01. Nautical Dark: 20:40 - 06:22. Astro Dark: 21:20 - 05:43

Total Clouds (% Sky Obscured)

14
26
75
100
84
74
75
85
98
94
92
99
100
98
100
100
100
100
100
100
100
91
92
96

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
23
29
34
41
37
60
63
59
48
44
45
44
49
46
26
20
22
27

Medium Clouds (% Sky Obscured)

12
15
19
23
19
20
0
15
45
42
48
54
86
88
84
75
83
84
86
76
83
87
82
79

High Clouds (% Sky Obscured)

0
15
74
100
67
49
44
36
38
43
61
97
99
85
99
94
100
100
100
100
100
59
64
78

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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

2
2
2
2
3
3
2
3
4
8
9
9
7
7
7
7
9
10
9
9
11
13
12
12

Relative Humidity (%)

44
43
42
44
45
45
44
45
44
51
51
47
42
41
40
42
49
57
58
61
74
85
89
90

Pressure (mb)

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

Ozone (du)

287
287
285
283
282
281
282
282
281
281
282
283
283
283
285
286
287
287
286
287
287
287
286
285

Sunday 27

Waning Gibbous 99%

19:21

08:29

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
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad
01 Bad

Sun - Rise: 07:35, Set: 19:27, Transit: 13:31. Moon - Rise: 19:21, Set: 08:29. Civil Dark: 19:59 - 07:02. Nautical Dark: 20:38 - 06:24. Astro Dark: 21:17 - 05:44

Total Clouds (% Sky Obscured)

100
100
98
85
91
95
93
90
92
53
65
86
82
73
88
98
98
100
99
97
100
99
83
96

Low Clouds (% Sky Obscured)

36
37
34
36
31
22
12
9
0
0
0
0
0
0
8
17
7
25
23
7
30
30
13
0

Medium Clouds (% Sky Obscured)

79
88
36
3
70
89
84
69
48
36
65
47
63
45
61
35
45
87
84
37
87
80
53
35

High Clouds (% Sky Obscured)

100
99
87
73
80
80
72
60
85
6
6
64
49
73
83
97
93
55
93
92
100
85
34
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
98
100
100
89
64
9
2
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
6

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

Chance of Frost

Temperature (°C)

13
13
13
13
12
12
12
13
15
17
19
22
23
24
25
25
25
23
20
20
19
18
19
18

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

90
89
86
84
84
81
77
68
55
50
45
40
37
33
34
34
41
46
41
41
46
43
43
48

Pressure (mb)

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

Ozone (du)

285
286
288
288
288
287
286
286
286
286
286
285
284
284
283
282
281
279
278
278
278
279
280
280

Monday 28

Waning Gibbous 98%

19:38

09:52

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
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad
01 Bad

Sun - Rise: 07:36, Set: 19:25, Transit: 13:30. Moon - Rise: 19:38, Set: 09:52. Civil Dark: 19:57 - 07:04. Nautical Dark: 20:35 - 06:25. Astro Dark: 21:15 - 05:46

Total Clouds (% Sky Obscured)

90
84
78
84
91
100
100
99
99
88
79
71
83
89
98
98
99
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
4
10
15
12
6
0
7
14
21
17
11
6
3
2
0
0
0
0

Medium Clouds (% Sky Obscured)

39
24
78
84
89
92
98
93
98
79
42
33
78
60
71
90
70
41
91
89
76
94
33
31

High Clouds (% Sky Obscured)

51
57
58
51
77
100
98
96
91
78
67
61
70
77
89
91
96
100
100
100
100
100
100
100

ISS Passover

Visibility (miles)

9
9
6
9
7
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 (%)

1
14
16
19
18
1
1
3
0
7
6
2
4
14
4
11
8
1
3
3
0
0
0
3

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

Chance of Frost

Temperature (°C)

19
18
18
18
17
16
16
18
19
21
23
24
26
26
27
27
26
24
22
21
20
19
19
19

Feels Like (°C)

16
15
15
16
15
15
15
17
19
20
21
22
24
25
26
27
26
24
21
20
20
19
19
18

Dew Point (°C)

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

Relative Humidity (%)

48
49
56
62
65
71
69
64
55
47
42
37
37
36
38
38
47
53
60
63
67
69
69
66

Pressure (mb)

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

Ozone (du)

280
280
281
281
280
280
281
280
279
279
280
281
281
281
281
281
281
282
283
284
284
282
282
282

Tuesday 29

Waning Gibbous 93%

20:00

11:18

02 Bad
03 Bad
04 Bad
05 Bad
06 Bad
07 Bad
08 Bad
09 Bad
10 OK
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

Sun - Rise: 07:38, Set: 19:22, Transit: 13:30. Moon - Rise: 20:00, Set: 11:18. Civil Dark: 19:55 - 07:05. Nautical Dark: 20:33 - 06:27. Astro Dark: 21:12 - 05:48

Total Clouds (% Sky Obscured)

95
100
99
100
89
100
77
57
35
59
74
100
82
70
60
86
86
95
96
96
96
96
96
92

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
4
7
8
7
5
4
2
1
0

Medium Clouds (% Sky Obscured)

23
22
16
10
8
3
4
6
3
13
23
34
26
15
2
1
1
1
14
28
40
40
41
47

High Clouds (% Sky Obscured)

89
99
97
99
68
100
77
57
35
59
72
100
82
67
60
82
86
91
95
96
96
78
69
68

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 (%)

3
16
3
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
5
12
11
3
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
5
6
6
7
10
11
14
14
14
15
14
13
13
9
6
3
3
3
3
4
5

Chance of Frost

Temperature (°C)

18
18
18
18
18
18
18
20
23
25
27
28
30
30
30
30
27
25
23
21
20
18
19
19

Feels Like (°C)

18
18
17
16
15
17
15
17
19
21
23
25
26
27
27
27
27
26
25
19
20
20
20
20

Dew Point (°C)

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

Relative Humidity (%)

66
67
67
65
64
60
57
50
45
43
44
44
44
45
47
49
53
58
64
66
70
73
76
76

Pressure (mb)

1018
1018
1018
1018
1017
1017
1017
1017
1017
1017
1017
1017
1017
1017
1017
1017
1017
1017
1018
1018
1018
1018
1018
1018

Ozone (du)

282
282
282
283
283
283
283
283
283
284
284
284
285
285
285
285
285
284
284
284
285
285
285
286

Wednesday 30

Waning Gibbous 86%

20:31

12:46

02 Bad
03 Bad
04 Bad
05 Bad
06 Bad
07 Bad
08 Bad
09 Bad
10 OK
11 OK
12 OK
13 OK
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: 07:39, Set: 19:20, Transit: 13:30. Moon - Rise: 20:31, Set: 12:46. Civil Dark: 19:53 - 07:07. Nautical Dark: 20:31 - 06:29. Astro Dark: 21:10 - 05:50

Total Clouds (% Sky Obscured)

83
84
97
98
99
100
76
51
29
29
25
24
48
73
96
92
81
72
73
81
92
95
97
100

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
10
14
34
27
17
6

Medium Clouds (% Sky Obscured)

61
74
86
81
74
64
48
33
15
19
21
23
34
48
62
58
55
51
51
40
18
24
32
43

High Clouds (% Sky Obscured)

67
76
90
93
97
100
75
49
26
23
23
23
45
64
83
71
57
41
37
41
57
69
81
93

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
10
18
16
20
27
35
42
39

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

Chance of Frost

Temperature (°C)

19
19
20
20
20
20
20
21
23
25
26
28
29
29
29
29
28
26
24
24
23
23
22
21

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

78
75
71
69
68
68
67
56
48
40
36
34
31
33
35
37
42
48
54
58
61
64
74
82

Pressure (mb)

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

Ozone (du)

286
286
285
285
285
285
285
285
285
285
285
285
286
285
285
285
284
284
283
283
282
282
281
281

Thursday 1

Waning Gibbous 77%

21:14

14:08

Sun - Rise: 07:41, Set: 19:18, Transit: 13:29. Moon - Rise: 21:14, Set: 14:08. Civil Dark: 19:50 - 07:08. Nautical Dark: 20:29 - 06:30. Astro Dark: 21:08 - 05:51

Total Clouds (% Sky Obscured)

Low Clouds (% Sky Obscured)

Medium Clouds (% Sky Obscured)

High Clouds (% Sky Obscured)

ISS Passover

Visibility (miles)

Fog (%)

Precipitation Type

Precipitation Probability (%)

Precipitation Amount (mm)

Wind Speed/Direction (mph)

Chance of Frost

Temperature (°C)

Feels Like (°C)

Dew Point (°C)

Relative Humidity (%)

Pressure (mb)

Ozone (du)

Forecast for Elst, Flemish Brabant, Kingdom of Belgium (50.77,4.89)

Generated: 25/09/26 02:12:44. Forecast: 25/09/26 to 01/10/26. Timezone: UTC+2.00