Clear Outside v1.0 - International Weather Forecasts For Astronomers

Friday 4

Third Quarter 51%

23:17

16:19

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
17 Bad
18 Bad
19 Bad
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad

Sun - Rise: 06:59, Set: 20:18, Transit: 13:39. Moon - Rise: 23:17, Set: 16:19. Civil Dark: 20:52 - 06:25. Nautical Dark: 21:34 - 05:44. Astro Dark: 22:18 - 04:59

Total Clouds (% Sky Obscured)

89
88
94
71
85
76
76
88
85
97
93
95
91
83
88
100
100
98
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

79
78
66
56
47
57
59
70
56
96
86
69
67
69
57
67
62
74
72
78
59
16
37
22

Medium Clouds (% Sky Obscured)

6
15
16
22
23
23
19
17
23
35
17
38
34
33
38
43
43
52
99
100
99
100
100
100

High Clouds (% Sky Obscured)

2
40
26
10
50
4
2
24
28
23
35
4
18
2
2
43
95
85
90
100
100
100
100
100

ISS Passover

Visibility (miles)

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

Precipitation Probability (%)

12
0
0
1
2
3
6
3
2
9
10
26
23
45
50
71
87
79
58
35
9
3
1
1

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.3
0.5
0.5
0
0
0
0
0
0

Wind Speed/Direction (mph)

9
9
11
14
14
14
14
15
17
19
18
19
20
21
21
19
17
15
14
12
11
9
8
8

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

93
92
93
93
92
93
93
91
85
79
74
68
58
54
56
60
66
74
89
88
85
85
88
89

Pressure (mb)

1018
1018
1017
1017
1016
1016
1015
1015
1015
1015
1015
1014
1014
1014
1013
1013
1014
1014
1015
1015
1016
1017
1017
1018

Ozone (du)

284
284
284
284
284
284
284
285
285
285
285
286
286
286
286
287
288
288
289
290
293
296
301
309

Saturday 5

Waning Crescent 39%

00:22

17:24

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

Sun - Rise: 07:01, Set: 20:16, Transit: 13:38. Moon - Rise: 00:22, Set: 17:24. Civil Dark: 20:50 - 06:27. Nautical Dark: 21:31 - 05:46. Astro Dark: 22:15 - 05:02

Total Clouds (% Sky Obscured)

21
34
29
25
82
98
100
100
86
79
76
90
89
55
77
35
35
35
40
58
40
35
32
35

Low Clouds (% Sky Obscured)

14
23
19
18
18
14
12
10
10
27
36
40
42
30
21
18
25
27
21
24
8
0
0
3

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
12
0
0
0
0
0
0
0
0
0
0
1

High Clouds (% Sky Obscured)

0
0
1
0
46
92
100
100
66
42
45
67
44
29
54
14
4
3
17
30
22
26
18
17

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
8
8
8
7
7
7
8
9
11
12
12
12
12
12
11
11
9
8
5
4
3
3
3

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

90
95
95
95
92
92
92
87
83
74
63
53
47
42
40
40
40
42
49
61
69
76
80
82

Pressure (mb)

1018
1018
1018
1019
1019
1020
1021
1021
1022
1022
1023
1023
1023
1023
1024
1024
1024
1024
1025
1025
1026
1026
1026
1027

Ozone (du)

316
318
319
319
317
316
313
312
310
309
306
303
301
299
298
298
298
297
298
297
296
294
292
291

Sunday 6

Waning Crescent 28%

No Rise

18:12

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

Sun - Rise: 07:02, Set: 20:14, Transit: 13:38. Moon - Rise: No Rise, Set: 18:12. Civil Dark: 20:48 - 06:29. Nautical Dark: 21:29 - 05:48. Astro Dark: 22:13 - 05:04

Total Clouds (% Sky Obscured)

15
13
24
15
6
9
3
43
40
53
35
32
25
40
62
97
74
100
80
68
55
50
42
43

Low Clouds (% Sky Obscured)

2
0
0
0
0
0
0
0
0
0
0
2
0
0
0
0
0
0
0
0
0
0
1
1

Medium Clouds (% Sky Obscured)

0
4
2
10
3
8
2
19
2
25
11
32
25
40
49
54
62
54
27
29
52
50
42
43

High Clouds (% Sky Obscured)

8
7
15
2
2
0
0
23
40
40
35
32
25
40
40
73
63
100
62
58
31
34
22
24

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
5
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)

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

Chance of Frost

Temperature (°C)

12
12
11
11
11
10
10
11
13
17
19
21
22
23
24
24
24
24
24
22
21
19
18
18

Feels Like (°C)

12
12
11
10
11
10
10
11
12
14
17
18
19
20
21
21
22
22
22
20
18
16
15
15

Dew Point (°C)

10
9
9
9
8
8
8
7
7
8
7
7
6
5
5
4
3
5
8
9
9
8
6
6

Relative Humidity (%)

83
84
84
85
84
85
85
78
64
55
46
40
35
31
29
26
25
28
37
43
46
47
46
45

Pressure (mb)

1027
1027
1026
1026
1026
1026
1026
1026
1026
1026
1026
1025
1024
1024
1023
1022
1021
1021
1020
1020
1020
1019
1019
1019

Ozone (du)

289
288
287
287
286
287
289
289
289
288
288
287
287
287
287
288
288
287
287
289
288
288
287
288

Monday 7

Waning Crescent 18%

01:43

18:46

01 OK
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 OK
18 OK
19 OK
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad

Sun - Rise: 07:04, Set: 20:12, Transit: 13:38. Moon - Rise: 01:43, Set: 18:46. Civil Dark: 20:45 - 06:30. Nautical Dark: 21:26 - 05:50. Astro Dark: 22:10 - 05:06

Total Clouds (% Sky Obscured)

45
60
80
100
82
65
62
65
63
97
88
76
61
63
62
61
41
34
40
60
80
100
88
97

Low Clouds (% Sky Obscured)

1
9
2
0
0
0
0
0
0
0
0
0
0
12
16
27
32
34
40
20
71
70
32
72

Medium Clouds (% Sky Obscured)

45
60
80
93
43
19
14
12
11
10
14
14
52
8
4
10
4
2
0
6
15
22
16
13

High Clouds (% Sky Obscured)

31
51
77
98
69
55
54
60
57
95
82
60
45
40
40
40
15
3
40
60
72
100
79
91

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
2
3
3
3
1
6
7
9
8
5
1
3
2
0
0
0
0
0
0
0
3
8

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

Chance of Frost

Temperature (°C)

18
17
18
18
18
18
18
19
21
22
24
25
27
28
27
27
27
25
24
23
22
21
20
19

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

45
47
45
45
51
59
63
63
56
48
42
37
35
32
31
31
35
48
53
58
62
58
65
75

Pressure (mb)

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

Ozone (du)

287
289
290
290
293
295
296
298
298
297
297
297
297
299
300
300
302
302
301
298
296
295
294
294

Tuesday 8

Waning Crescent 10%

03:11

19:10

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

Sun - Rise: 07:05, Set: 20:10, Transit: 13:37. Moon - Rise: 03:11, Set: 19:10. Civil Dark: 20:43 - 06:32. Nautical Dark: 21:24 - 05:51. Astro Dark: 22:07 - 05:08

Total Clouds (% Sky Obscured)

100
100
100
100
99
98
97
98
99
100
100
100
100
100
100
100
75
52
31
25
13
1
1
0

Low Clouds (% Sky Obscured)

28
31
43
82
78
76
56
76
74
48
34
26
47
52
59
66
46
26
5
4
2
1
1
0

Medium Clouds (% Sky Obscured)

12
33
86
24
13
13
11
13
18
100
99
98
98
68
38
9
8
4
0
0
0
0
0
0

High Clouds (% Sky Obscured)

100
100
100
100
91
82
73
80
89
100
100
100
100
100
100
100
74
45
12
12
4
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 (%)

4
13
17
17
20
21
11
17
12
2
10
18
24
45
44
35
28
20
2
2
1
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
8
8
8
8
9
9
11
11
14
14
15
15
15
14
14
12
10
9
9
9
9
9

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

76
83
81
78
74
72
71
77
76
74
64
53
45
44
43
44
44
43
43
43
48
53
61
66

Pressure (mb)

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

Ozone (du)

294
294
294
294
295
294
295
295
295
296
296
297
300
303
307
311
314
317
319
322
325
329
333
333

Wednesday 9

Waning Crescent 4%

04:39

19:28

01 Good
02 Good
03 OK
04 OK
05 OK
06 Bad
07 Bad
08 OK
09 OK
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

Sun - Rise: 07:07, Set: 20:07, Transit: 13:37. Moon - Rise: 04:39, Set: 19:28. Civil Dark: 20:41 - 06:34. Nautical Dark: 21:21 - 05:53. Astro Dark: 22:04 - 05:10

Total Clouds (% Sky Obscured)

0
12
26
37
40
46
52
38
25
13
32
49
64
70
78
84
90
95
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

0
7
13
20
23
32
46
32
20
6
27
49
64
70
78
84
90
95
100
98
97
96
92
89

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
1
3
9
14
24
26
13
6
0
21
43
64
76
87

High Clouds (% Sky Obscured)

0
0
0
0
0
1
1
1
0
0
0
0
0
0
0
0
25
43
51
59
79
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
1
1
1
4
5
4
6
6
1
13
20
26
27
25
20
18
14
3
8
10
12
11
11

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)

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

Chance of Frost

Temperature (°C)

12
12
12
11
11
11
11
11
13
15
16
17
17
18
18
18
19
18
17
16
16
15
14
14

Feels Like (°C)

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

Dew Point (°C)

8
9
8
9
9
9
9
9
8
8
7
8
9
10
9
9
8
8
7
7
7
7
7
8

Relative Humidity (%)

72
80
80
83
84
86
86
86
74
63
53
55
56
57
55
53
51
51
52
53
56
59
62
69

Pressure (mb)

1017
1017
1017
1017
1017
1017
1017
1017
1017
1017
1017
1017
1017
1016
1016
1016
1016
1016
1016
1016
1016
1016
1016
1015

Ozone (du)

334
335
335
335
335
334
334
334
334
334
333
333
332
332
331
329
328
326
323
321
318
315
312
311

Thursday 10

Waning Crescent 1%

06:04

19:43

Sun - Rise: 07:08, Set: 20:05, Transit: 13:37. Moon - Rise: 06:04, Set: 19:43. Civil Dark: 20:38 - 06:35. Nautical Dark: 21:19 - 05:55. Astro Dark: 22:01 - 05:12

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: 04/09/26 01:15:17. Forecast: 04/09/26 to 10/09/26. Timezone: UTC+2.00