Clear Outside v1.0 - International Weather Forecasts For Astronomers

Sunday 23

Waxing Gibbous 83%

18:09

01:23

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

Sun - Rise: 06:05, Set: 20:05, Transit: 13:04. Moon - Rise: 18:09, Set: 01:23. Civil Dark: 20:39 - 05:31. Nautical Dark: 21:22 - 04:48. Astro Dark: 22:11 - 04:00

Total Clouds (% Sky Obscured)

10
21
45
38
51
41
35
54
70
76
63
70
54
41
28
35
65
62
76
76
39
10
0
2

Low Clouds (% Sky Obscured)

10
21
33
33
34
14
26
32
39
31
22
12
0
33
28
35
45
55
56
48
39
10
0
0

Medium Clouds (% Sky Obscured)

10
21
25
24
23
24
19
21
24
57
44
41
49
32
25
31
36
20
21
3
0
0
0
0

High Clouds (% Sky Obscured)

2
21
5
2
0
0
7
27
5
59
47
54
15
3
0
3
46
24
54
47
0
2
0
2

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)

5
6
7
7
7
7
7
7
7
8
6
5
3
2
1
2
2
2
2
2
2
2
1
2

Chance of Frost

Temperature (°C)

17
19
20
21
21
22
22
22
22
20
18
16
15
15
13
13
12
11
11
11
10
11
13
15

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

58
51
45
41
36
34
32
32
35
42
46
51
53
57
59
59
61
62
64
65
66
66
60
55

Pressure (mb)

1022
1022
1022
1022
1021
1021
1021
1021
1021
1021
1021
1022
1023
1023
1023
1023
1023
1023
1023
1023
1023
1023
1023
1023

Ozone (du)

322
323
324
322
322
321
320
321
323
325
327
327
327
325
325
324
322
321
320
319
318
320
320
319

Monday 24

Waxing Gibbous 89%

18:42

02:33

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

Sun - Rise: 06:07, Set: 20:03, Transit: 13:04. Moon - Rise: 18:42, Set: 02:33. Civil Dark: 20:37 - 05:33. Nautical Dark: 21:20 - 04:50. Astro Dark: 22:08 - 04:02

Total Clouds (% Sky Obscured)

2
7
22
28
20
30
30
54
46
20
6
16
40
40
64
53
38
32
30
8
17
22
26
56

Low Clouds (% Sky Obscured)

0
6
22
28
20
17
20
20
9
0
0
0
0
0
37
25
5
0
0
0
3
3
12
56

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
1
2
2
3
10
21
26
29
17
2
2
2
2
3
3
3
15

High Clouds (% Sky Obscured)

2
3
3
8
3
23
16
35
35
16
2
2
30
35
35
35
35
31
30
4
1
4
0
4

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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

17
19
19
20
20
21
21
21
18
17
16
15
14
11
10
10
10
9
9
9
10
10
11
14

Dew Point (°C)

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

Relative Humidity (%)

50
47
44
39
36
35
35
35
38
46
50
52
53
56
61
65
67
67
66
68
68
66
61
57

Pressure (mb)

1023
1023
1022
1022
1022
1021
1021
1020
1020
1020
1019
1020
1020
1019
1019
1019
1018
1018
1018
1017
1017
1017
1017
1016

Ozone (du)

318
318
316
315
315
314
314
314
315
316
313
312
307
304
304
307
307
305
303
303
304
304
305
305

Tuesday 25

Waxing Gibbous 95%

19:07

03:47

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
06 Bad
07 Bad
08 Bad
09 Bad

Sun - Rise: 06:08, Set: 20:01, Transit: 13:04. Moon - Rise: 19:07, Set: 03:47. Civil Dark: 20:35 - 05:34. Nautical Dark: 21:18 - 04:52. Astro Dark: 22:05 - 04:05

Total Clouds (% Sky Obscured)

59
76
76
69
80
87
75
60
81
97
98
87
94
100
100
100
79
81
87
55
52
46
47
54

Low Clouds (% Sky Obscured)

42
19
0
4
0
22
0
0
4
7
2
2
4
10
5
19
5
10
16
20
32
45
43
42

Medium Clouds (% Sky Obscured)

16
26
21
20
61
44
43
36
79
76
62
71
85
91
100
100
79
80
75
51
47
43
44
44

High Clouds (% Sky Obscured)

21
23
41
45
40
41
49
28
35
75
90
45
71
100
100
44
29
3
0
0
0
2
4
6

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
4
11
18
5
3
6
9
7
5
4

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
9
10
10
10
10
10
9
9
8
7
6
5
4
3
3
3
3
3
3
2
3
4

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

16
17
19
20
21
21
21
21
21
20
18
17
17
16
16
16
15
16
15
15
16
16
17
18

Dew Point (°C)

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

Relative Humidity (%)

50
46
43
42
40
40
40
42
46
52
55
59
63
63
64
66
67
66
67
67
70
68
59
51

Pressure (mb)

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

Ozone (du)

304
304
304
304
304
303
303
305
307
308
308
309
308
307
308
308
308
305
306
306
304
302
300
300

Wednesday 26

Waxing Gibbous 98%

19:26

05:02

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
06 Bad
07 Bad
08 Bad
09 Bad

Sun - Rise: 06:10, Set: 19:58, Transit: 13:03. Moon - Rise: 19:26, Set: 05:02. Civil Dark: 20:33 - 05:36. Nautical Dark: 21:15 - 04:54. Astro Dark: 22:02 - 04:07

Total Clouds (% Sky Obscured)

54
50
57
70
70
53
75
61
71
72
52
81
64
79
76
59
69
61
68
99
61
88
48
68

Low Clouds (% Sky Obscured)

40
27
13
0
13
20
31
30
26
19
27
34
40
37
31
31
24
14
5
4
2
0
0
0

Medium Clouds (% Sky Obscured)

45
42
37
68
67
27
30
33
61
63
41
63
37
35
62
44
24
13
4
4
3
2
3
42

High Clouds (% Sky Obscured)

3
6
19
44
45
22
41
21
12
6
5
7
8
23
24
22
41
48
59
98
55
85
43
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 (%)

1
2
1
0
2
3
3
3
2
1
2
1
0
0
0
0
0
0
0
1
2
4
3
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)

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

Chance of Frost

Temperature (°C)

20
21
23
24
25
25
26
26
25
24
22
21
20
19
19
18
18
17
16
16
16
16
18
20

Feels Like (°C)

19
20
23
23
23
24
26
24
24
23
20
20
19
20
17
17
17
17
17
17
15
18
17
21

Dew Point (°C)

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

Relative Humidity (%)

46
44
42
40
40
38
36
37
39
46
50
53
56
60
61
61
62
63
63
65
65
64
58
53

Pressure (mb)

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

Ozone (du)

299
298
297
298
298
297
297
297
297
297
298
299
299
297
297
297
297
296
294
294
294
295
294
293

Thursday 27

Waxing Gibbous 100%

19:42

06:17

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

Sun - Rise: 06:11, Set: 19:56, Transit: 13:03. Moon - Rise: 19:42, Set: 06:17. Civil Dark: 20:31 - 05:37. Nautical Dark: 21:13 - 04:55. Astro Dark: 21:59 - 04:09

Total Clouds (% Sky Obscured)

39
52
74
86
74
62
50
50
27
30
42
46
40
34
57
64
73
82
91
91
89
84
85
86

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)

19
43
66
72
51
15
18
46
25
21
17
9
2
0
1
1
9
17
25
35
44
53
63
76

High Clouds (% Sky Obscured)

29
18
31
65
64
50
36
20
2
10
34
46
40
33
55
55
66
71
82
79
75
77
62
46

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
0
0
0
0
0
0
0
0
0
0
0
1
1
15
26
34
48
57

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
0.2

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

23
25
27
28
29
30
30
30
29
27
26
24
23
22
21
20
19
19
19
18
19
19
20
20

Feels Like (°C)

22
24
26
27
28
29
29
29
28
28
26
24
22
21
21
20
20
20
20
20
19
19
20
21

Dew Point (°C)

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

Relative Humidity (%)

49
45
42
39
36
34
34
35
40
45
50
51
53
53
54
54
55
56
57
58
60
62
65
70

Pressure (mb)

1016
1016
1015
1014
1014
1013
1013
1013
1012
1012
1011
1011
1011
1011
1010
1009
1008
1008
1007
1006
1006
1005
1005
1006

Ozone (du)

291
291
293
293
293
293
296
300
302
299
297
295
295
294
292
291
290
290
289
289
289
290
290
292

Friday 28

Full Moon 99%

19:56

07:32

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
06 Bad
07 Bad
08 Bad
09 Bad

Sun - Rise: 06:13, Set: 19:54, Transit: 13:03. Moon - Rise: 19:56, Set: 07:32. Civil Dark: 20:28 - 05:39. Nautical Dark: 21:10 - 04:57. Astro Dark: 21:57 - 04:11

Total Clouds (% Sky Obscured)

88
91
91
91
88
84
80
75
71
67
80
89
97
92
86
77
71
72
65
50
29
46
51
49

Low Clouds (% Sky Obscured)

0
5
13
23
31
39
26
18
10
1
9
18
24
25
32
43
43
42
39
28
18
7
16
24

Medium Clouds (% Sky Obscured)

88
81
73
65
64
65
63
51
38
30
39
54
61
71
76
71
61
45
34
41
29
44
36
45

High Clouds (% Sky Obscured)

30
34
43
59
71
83
80
75
71
67
80
89
97
92
85
69
53
42
36
36
29
46
36
24

ISS Passover

Visibility (miles)

8
7
7
7
7
8
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

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

Precipitation Probability (%)

71
95
95
95
94
79
24
21
19
19
21
28
36
56
81
95
95
95
95
95
59
6
7
4

Precipitation Amount (mm)

0.4
0.9
1.5
1.4
1
0.8
0
0
0
0
0
0
0
0
0.3
0.6
1.4
1.5
1.2
0.7
0.2
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

21
22
22
21
21
21
22
23
23
22
21
21
20
19
18
17
17
16
16
16
16
16
17
18

Feels Like (°C)

22
23
24
24
25
19
18
18
19
19
20
19
18
18
17
16
15
14
14
14
14
13
14
15

Dew Point (°C)

17
19
19
19
19
17
15
15
15
14
14
14
14
14
13
13
12
12
12
12
12
11
12
11

Relative Humidity (%)

77
83
84
86
89
77
66
58
60
62
64
66
69
72
72
74
75
75
75
75
74
73
71
65

Pressure (mb)

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

Ozone (du)

293
294
299
304
309
313
317
321
322
323
324
324
325
326
325
323
322
322
321
321
322
323
324
326

Saturday 29

Waning Gibbous 96%

20:09

08:48

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 OK
01 OK
02 OK
03 OK
04 OK
05 Bad
06 Bad
07 Bad

Sun - Rise: 06:14, Set: 19:52, Transit: 13:03. Moon - Rise: 20:09, Set: 08:48. Civil Dark: 20:26 - 05:41. Nautical Dark: 21:08 - 04:59. Astro Dark: 21:54 - 04:14

Total Clouds (% Sky Obscured)

55
66
76
87
90
92
95
86
76
66
61
57
52
46
40
37
36
36
35
57
78
100

Low Clouds (% Sky Obscured)

33
40
47
58
63
69
71
52
36
22
21
19
16
9
4
1
1
1
0
0
0
0

Medium Clouds (% Sky Obscured)

45
43
44
47
36
27
15
22
31
36
32
28
24
23
21
17
20
24
35
42
46
47

High Clouds (% Sky Obscured)

6
26
42
45
41
41
42
41
46
45
27
13
0
10
24
37
36
36
35
57
78
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

Fog (%)

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

Precipitation Probability (%)

1
15
22
27
21
19
8
14
14
14
14
15
18
16
11
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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

11
11
11
11
10
10
10
10
9
9
9
9
9
10
10
10
10
10
10
10
11
10

Relative Humidity (%)

61
56
53
51
47
46
45
44
46
49
53
55
59
64
66
68
70
72
74
76
75
72

Pressure (mb)

1011
1011
1011
1010
1010
1010
1010
1010
1011
1012
1012
1012
1013
1013
1013
1013
1013
1013
1013
1013
1013
1013

Ozone (du)

328
330
328
325
323
322
320
318
320
321
323
323
323
323
324
325
325
326
327
328
329
330

Forecast for Královské Vinohrady, Praha 2, Czech Republic (50.08,14.44)

Generated: 23/08/26 10:48:07. Forecast: 23/08/26 to 29/08/26. Timezone: UTC+2.00