Clear Outside v1.0 - International Weather Forecasts For Astronomers

Thursday 20

First Quarter 56%

17:15

23:26

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

Sun - Rise: 06:38, Set: 20:50, Transit: 13:43. Moon - Rise: 17:15, Set: 23:26. Civil Dark: 21:26 - 06:02. Nautical Dark: 22:11 - 05:17. Astro Dark: 23:03 - 04:26

Total Clouds (% Sky Obscured)

86
64
72
69
23
2
27
37
45
63
95
47
64
92
95
96
95
100
100
95
100
100
100
99

Low Clouds (% Sky Obscured)

22
64
12
19
19
0
0
0
0
12
17
26
32
30
24
26
21
10
15
26
41
79
76
78

Medium Clouds (% Sky Obscured)

3
3
0
0
0
0
0
0
0
0
0
7
36
19
18
17
33
91
90
91
99
100
100
34

High Clouds (% Sky Obscured)

2
3
43
3
2
2
27
37
39
47
94
18
15
45
79
79
59
100
100
50
46
19
52
62

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
Light Rain
Light Rain
Light Rain

Precipitation Probability (%)

36
34
17
0
0
0
0
0
0
0
0
0
0
0
4
1
2
4
9
41
47
95
87
84

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.8
0.7
0.4

Wind Speed/Direction (mph)

13
13
10
8
7
7
7
7
8
7
7
7
7
7
7
8
8
8
7
7
8
8
9
10

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

6
6
8
11
12
12
12
12
12
12
12
12
12
12
12
11
11
10
10
9
8
6
5
9

Relative Humidity (%)

48
47
55
66
72
74
78
82
86
92
93
93
95
93
84
75
66
59
53
48
43
38
39
55

Pressure (mb)

1007
1007
1007
1008
1009
1009
1009
1010
1010
1010
1009
1009
1009
1010
1010
1010
1010
1011
1010
1010
1010
1010
1010
1011

Ozone (du)

330
330
332
333
333
335
337
338
338
337
336
336
334
332
332
334
334
336
335
336
337
338
342
344

Friday 21

Waxing Gibbous 66%

No Rise

00:05

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
17 Bad

Sun - Rise: 06:39, Set: 20:48, Transit: 13:43. Moon - Rise: No Rise, Set: 00:05. Civil Dark: 21:24 - 06:04. Nautical Dark: 22:09 - 05:19. Astro Dark: 23:00 - 04:29

Total Clouds (% Sky Obscured)

100
100
100
99
98
100
98
100
100
100
100
97
80
65
52
48
47
69
63
79
82
65
70
78

Low Clouds (% Sky Obscured)

39
42
34
42
51
70
70
79
78
56
58
40
42
39
36
28
28
38
41
79
69
50
56
78

Medium Clouds (% Sky Obscured)

100
100
95
98
97
100
97
100
100
96
81
59
42
25
19
19
25
34
23
3
27
23
20
0

High Clouds (% Sky Obscured)

100
83
50
85
37
23
73
100
92
87
100
89
50
26
3
0
0
0
0
0
0
0
0
0

ISS Passover

Visibility (miles)

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

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

Precipitation Probability (%)

84
69
74
82
79
78
73
87
70
32
9
4
2
1
4
45
53
54
53
46
29
34
35
9

Precipitation Amount (mm)

0.6
0.4
0.4
0.5
0.5
0.4
0.2
0.5
0.4
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

10
11
11
12
13
13
13
13
13
13
13
12
12
12
12
12
12
11
11
11
10
10
6
7

Relative Humidity (%)

59
66
71
82
87
90
90
92
95
95
93
93
93
95
90
83
77
71
66
63
61
55
42
46

Pressure (mb)

1011
1012
1012
1013
1013
1014
1014
1014
1015
1015
1015
1016
1016
1017
1018
1018
1019
1019
1019
1020
1020
1020
1020
1021

Ozone (du)

345
345
348
347
349
351
352
352
354
356
357
357
358
358
359
360
359
357
357
358
358
359
361
361

Saturday 22

Waxing Gibbous 75%

18:09

00:56

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

Sun - Rise: 06:41, Set: 20:46, Transit: 13:42. Moon - Rise: 18:09, Set: 00:56. Civil Dark: 21:22 - 06:05. Nautical Dark: 22:06 - 05:21. Astro Dark: 22:57 - 04:31

Total Clouds (% Sky Obscured)

47
42
28
29
40
3
2
2
7
16
40
61
61
65
50
47
45
42
50
41
34
29
22
17

Low Clouds (% Sky Obscured)

45
39
27
29
40
3
2
0
4
5
14
27
29
34
22
21
36
39
48
38
32
29
22
14

Medium 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

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
1
2
11
25
40
40
40
40
40
7
0
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 (%)

4
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
2
1
1
1

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)

11
10
9
6
5
5
4
4
3
2
2
2
2
2
2
3
4
4
6
7
7
7
6
6

Chance of Frost

Temperature (°C)

19
18
17
15
15
14
13
12
11
11
11
10
10
10
11
13
15
17
18
19
19
20
20
21

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

48
46
58
68
60
63
79
84
87
87
88
88
90
88
80
72
64
56
50
47
44
42
39
37

Pressure (mb)

1021
1022
1022
1023
1023
1023
1024
1024
1024
1024
1024
1024
1024
1025
1025
1025
1026
1025
1025
1025
1025
1025
1024
1024

Ozone (du)

358
353
351
350
349
347
345
344
342
343
342
340
339
339
341
343
345
348
348
347
345
343
341
340

Sunday 23

Waxing Gibbous 83%

18:52

01:59

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

Sun - Rise: 06:42, Set: 20:44, Transit: 13:42. Moon - Rise: 18:52, Set: 01:59. Civil Dark: 21:20 - 06:07. Nautical Dark: 22:04 - 05:23. Astro Dark: 22:54 - 04:34

Total Clouds (% Sky Obscured)

9
13
24
43
55
35
20
4
4
3
2
1
1
0
2
4
4
28
52
82
100
100
100
100

Low Clouds (% Sky Obscured)

9
11
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
3
7
10
7
3
0
0

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
7
12
20
20

High Clouds (% Sky Obscured)

0
0
22
43
55
35
18
4
3
2
1
1
0
0
2
4
4
28
46
74
100
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
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
6
5
5
4
4
4
4
5
5
6
6
6
6
9
10
11
12
13
13
13
14
14

Chance of Frost

Temperature (°C)

20
19
18
16
15
14
13
12
12
11
11
11
11
11
12
14
17
19
20
21
22
23
23
23

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

37
44
55
66
73
76
79
83
84
86
87
90
88
90
80
68
58
52
45
40
36
35
33
33

Pressure (mb)

1024
1024
1024
1024
1024
1024
1024
1024
1024
1024
1023
1023
1023
1023
1023
1022
1022
1021
1021
1020
1019
1018
1018
1017

Ozone (du)

340
338
337
336
335
334
332
331
330
329
327
325
325
324
324
324
325
324
323
323
320
319
317
315

Monday 24

Waxing Gibbous 90%

19:25

03:09

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
17 Bad

Sun - Rise: 06:44, Set: 20:42, Transit: 13:42. Moon - Rise: 19:25, Set: 03:09. Civil Dark: 21:17 - 06:09. Nautical Dark: 22:01 - 05:25. Astro Dark: 22:51 - 04:36

Total Clouds (% Sky Obscured)

100
92
86
100
81
100
85
100
97
94
98
100
100
100
100
100
100
99
98
97
95
93
91
80

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
10
20
41
30
44
58
64
65
64
62
61
59
51

Medium Clouds (% Sky Obscured)

25
28
32
38
46
91
43
43
40
37
34
36
94
95
87
94
96
89
79
66
60
53
49
44

High Clouds (% Sky Obscured)

100
89
68
73
37
75
64
100
91
84
93
100
100
83
94
97
99
86
72
58
59
59
59
40

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
Very Light Rain

Precipitation Probability (%)

0
0
0
0
0
0
1
1
3
3
1
28
42
42
13
14
15
38
34
6
34
46
51
62

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
0.3

Wind Speed/Direction (mph)

14
13
12
10
10
10
9
9
8
7
7
7
6
6
6
6
7
8
8
8
9
7
5
4

Chance of Frost

Temperature (°C)

23
22
20
18
17
16
16
15
15
15
14
14
14
14
15
16
18
19
20
21
22
23
23
24

Feels Like (°C)

19
17
17
17
14
15
13
13
12
12
11
10
11
11
12
12
13
14
15
16
17
21
21
21

Dew Point (°C)

7
7
7
8
8
9
9
9
9
8
7
7
7
7
7
9
11
13
14
15
16
17
17
18

Relative Humidity (%)

36
39
42
51
56
61
62
66
66
63
62
63
64
64
57
61
63
67
67
68
67
67
67
68

Pressure (mb)

1016
1015
1015
1015
1015
1015
1014
1014
1013
1013
1013
1012
1012
1012
1012
1013
1013
1013
1013
1013
1013
1013
1013
1012

Ozone (du)

314
313
313
312
313
313
311
311
313
311
308
307
306
306
306
308
309
311
311
312
313
314
316
317

Tuesday 25

Waxing Gibbous 95%

19:49

04:24

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
17 Bad

Sun - Rise: 06:45, Set: 20:40, Transit: 13:42. Moon - Rise: 19:49, Set: 04:24. Civil Dark: 21:15 - 06:10. Nautical Dark: 21:59 - 05:27. Astro Dark: 22:48 - 04:39

Total Clouds (% Sky Obscured)

69
58
66
73
80
68
57
43
52
64
78
78
75
67
76
86
100
100
100
100
91
81
74
69

Low Clouds (% Sky Obscured)

43
35
35
34
32
26
20
13
15
16
16
11
6
1
12
21
23
24
30
37
33
27
19
29

Medium Clouds (% Sky Obscured)

41
36
38
40
39
28
20
11
33
55
76
74
71
67
76
86
95
84
80
78
65
54
51
48

High Clouds (% Sky Obscured)

21
3
18
34
51
45
42
36
29
18
7
11
16
21
47
75
100
100
100
100
82
63
44
49

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
7
5
3
5
7
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

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

Precipitation Probability (%)

70
78
55
40
47
45
42
37
35
29
2
12
15
16
19
20
18
15
11
0
20
26
27
80

Precipitation Amount (mm)

0.5
0.7
0.3
0
0.2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.4

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

23
22
22
21
21
20
20
19
19
19
19
19
19
19
20
21
23
24
26
27
29
30
30
30

Feels Like (°C)

22
22
23
23
23
23
23
22
22
21
20
19
19
18
18
19
20
20
21
21
21
30
29
28

Dew Point (°C)

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

Relative Humidity (%)

70
71
73
73
74
74
72
70
69
70
70
70
70
69
69
65
61
58
49
43
38
37
36
35

Pressure (mb)

1012
1012
1012
1013
1013
1013
1013
1013
1013
1013
1013
1013
1013
1013
1014
1014
1014
1014
1013
1013
1013
1012
1012
1011

Ozone (du)

319
320
322
318
314
310
308
307
305
304
303
302
302
301
301
301
302
302
302
301
301
302
302
303

Wednesday 26

Waxing Gibbous 98%

20:07

05:40

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: 06:47, Set: 20:38, Transit: 13:41. Moon - Rise: 20:07, Set: 05:40. Civil Dark: 21:13 - 06:12. Nautical Dark: 21:56 - 05:29. Astro Dark: 22:45 - 04:41

Total Clouds (% Sky Obscured)

67
62
58
49
45
45
49
50
64
81
100
91
86
82
81
78
73
70
68
69

Low Clouds (% Sky Obscured)

42
53
41
27
12
29
49
50
56
35
14
40
65
82
69
47
26
24
23
22

Medium Clouds (% Sky Obscured)

42
40
36
35
33
37
43
50
44
41
34
45
57
60
58
56
51
41
31
21

High Clouds (% Sky Obscured)

53
58
58
49
45
45
49
50
64
81
100
91
83
77
70
59
44
45
50
54

ISS Passover

Visibility (miles)

9
9
9
7
5
3
5
7
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

Light Rain
Light Rain
Light Rain
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

Precipitation Probability (%)

95
95
95
83
56
60
62
64
53
40
21
20
17
14
12
9
3
21
33
40

Precipitation Amount (mm)

0.7
1
0.8
0.5
0.2
0.2
0.3
0.3
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

28
25
23
23
23
22
22
21
21
21
21
21
21
21
21
22
23
24
25
26

Feels Like (°C)

29
31
33
21
21
22
22
21
21
19
20
22
22
22
23
21
21
21
22
23

Dew Point (°C)

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

Relative Humidity (%)

48
67
91
89
89
88
89
91
95
93
91
91
91
92
91
83
73
65
62
57

Pressure (mb)

1011
1011
1011
1011
1011
1011
1011
1011
1010
1010
1010
1010
1010
1010
1010
1010
1010
1010
1010
1010

Ozone (du)

303
303
304
304
304
304
305
306
307
309
312
314
320
326
332
331
330
329
335
340

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

Generated: 20/08/26 18:17:24. Forecast: 20/08/26 to 26/08/26. Timezone: UTC+2.00