Clear Outside v1.0 - International Weather Forecasts For Astronomers

Sunday 30

Waning Gibbous 91%

20:22

10:06

11 OK
12 OK
13 OK
14 OK
15 Bad
16 OK
17 OK
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

Sun - Rise: 06:16, Set: 19:50, Transit: 13:02. Moon - Rise: 20:22, Set: 10:06. Civil Dark: 20:24 - 05:42. Nautical Dark: 21:05 - 05:01. Astro Dark: 21:51 - 04:16

Total Clouds (% Sky Obscured)

36
34
31
33
60
26
31
49
57
89
73
100
100
63
85
63
69
98
100
100
100
100
97
94

Low Clouds (% Sky Obscured)

25
24
2
22
26
23
6
6
2
0
0
0
4
11
5
0
14
10
0
38
45
77
71
75

Medium Clouds (% Sky Obscured)

0
0
26
20
11
4
5
9
17
15
31
38
38
34
37
43
35
78
74
100
100
96
89
46

High Clouds (% Sky Obscured)

2
5
4
4
41
3
20
32
37
82
66
100
100
34
72
30
65
84
100
100
100
100
55
58

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
7
7
6
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
Light Rain
Light Rain
Light Rain
Very Light Rain
Very Light Rain

Precipitation Probability (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
2
11
50
95
95
95
89
73

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.6
2.3
1.3
0.3
0.3

Wind Speed/Direction (mph)

8
10
12
14
13
13
11
9
6
5
4
4
4
4
3
3
3
3
3
4
3
3
4
6

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

23
24
25
24
24
24
25
25
24
23
21
21
19
19
21
18
19
17
17
17
17
18
18
19

Dew Point (°C)

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

Relative Humidity (%)

48
45
44
42
41
42
41
44
50
58
61
64
66
67
70
70
72
74
76
78
89
92
93
86

Pressure (mb)

1015
1015
1014
1014
1014
1014
1014
1014
1014
1015
1015
1015
1015
1015
1015
1015
1015
1015
1015
1015
1015
1016
1016
1016

Ozone (du)

297
295
295
296
298
297
297
296
295
294
295
297
297
296
295
295
294
294
292
291
293
291
293
296

Monday 31

Waning Gibbous 84%

20:37

No Set

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

Sun - Rise: 06:17, Set: 19:48, Transit: 13:02. Moon - Rise: 20:37, Set: No Set. Civil Dark: 20:22 - 05:44. Nautical Dark: 21:03 - 05:03. Astro Dark: 21:48 - 04:18

Total Clouds (% Sky Obscured)

85
49
63
27
27
11
6
26
50
6
9
19
29
5
0
14
4
0
1
4
2
76
97
82

Low Clouds (% Sky Obscured)

46
39
41
27
27
11
6
0
1
0
9
0
0
0
0
0
0
0
0
0
0
22
55
37

Medium Clouds (% Sky Obscured)

35
11
25
0
0
0
0
26
14
5
0
19
29
5
0
14
4
0
0
0
0
0
0
35

High Clouds (% Sky Obscured)

51
2
0
0
0
0
0
1
32
2
0
0
0
0
0
0
0
0
1
3
2
76
97
82

ISS Passover

Visibility (miles)

5
4
8
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

Light Rain
Light Rain
Light Rain
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

84
79
66
30
3
1
0
0
0
0
0
2
2
0
0
0
0
0
0
0
0
0
0
0

Precipitation Amount (mm)

0.6
0.6
0.4
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
9
10
10
11
12
12
11
10
9
7
7
7
7
7
7
7
8
8
8
8
9
10
11

Chance of Frost

Temperature (°C)

20
22
23
25
26
26
26
25
23
22
20
19
18
18
17
16
16
16
15
15
15
16
17
19

Feels Like (°C)

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

Dew Point (°C)

17
17
16
16
12
10
9
9
10
11
11
11
11
11
12
11
11
12
11
12
11
11
11
11

Relative Humidity (%)

81
72
64
57
43
36
35
37
43
52
57
61
63
65
70
71
73
77
76
79
78
73
66
59

Pressure (mb)

1016
1015
1015
1015
1014
1014
1014
1014
1014
1015
1016
1017
1017
1018
1018
1018
1018
1018
1019
1019
1019
1020
1020
1021

Ozone (du)

298
301
303
303
306
307
307
307
307
309
314
319
324
325
325
324
322
317
314
313
311
311
311
311

Tuesday 1

Waning Gibbous 74%

20:56

11:27

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

Sun - Rise: 06:19, Set: 19:46, Transit: 13:02. Moon - Rise: 20:56, Set: 11:27. Civil Dark: 20:19 - 05:45. Nautical Dark: 21:01 - 05:05. Astro Dark: 21:45 - 04:20

Total Clouds (% Sky Obscured)

66
83
79
91
95
87
73
73
45
44
33
56
44
100
99
96
80
72
35
57
60
88
95
100

Low Clouds (% Sky Obscured)

20
11
29
37
27
28
43
55
0
0
7
0
0
0
28
31
39
53
35
48
60
59
58
56

Medium Clouds (% Sky Obscured)

15
28
28
28
22
23
18
18
0
3
0
0
0
30
4
8
50
43
21
44
35
49
27
23

High Clouds (% Sky Obscured)

36
41
23
42
84
78
24
4
30
20
19
48
37
99
99
88
56
8
2
1
0
22
80
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
2
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)

11
11
11
10
10
9
9
9
8
5
5
4
3
3
3
3
3
3
3
3
3
3
3
3

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

53
46
41
38
35
35
35
39
44
51
56
60
62
64
66
68
68
68
69
71
69
65
57
53

Pressure (mb)

1020
1020
1020
1020
1019
1019
1019
1019
1019
1020
1020
1021
1021
1021
1022
1022
1021
1021
1022
1022
1022
1022
1023
1023

Ozone (du)

311
311
310
309
308
308
308
308
308
308
308
308
308
308
308
309
314
316
316
318
316
314
314
315

Wednesday 2

Waning Gibbous 63%

21:20

12:51

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

Sun - Rise: 06:20, Set: 19:44, Transit: 13:01. Moon - Rise: 21:20, Set: 12:51. Civil Dark: 20:17 - 05:47. Nautical Dark: 20:58 - 05:06. Astro Dark: 21:42 - 04:22

Total Clouds (% Sky Obscured)

98
96
87
67
80
81
64
56
55
67
85
100
87
75
69
48
34
24
8
11
46
60
33
71

Low Clouds (% Sky Obscured)

42
27
13
12
22
22
14
10
24
1
0
0
0
8
1
0
0
0
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

56
72
80
41
26
21
16
12
6
10
34
57
52
41
52
36
20
4
4
5
5
11
19
28

High Clouds (% Sky Obscured)

80
60
13
22
43
70
58
36
25
47
70
100
72
59
57
40
26
20
3
4
46
56
15
49

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

19
20
20
21
23
22
22
22
20
19
18
18
16
16
16
16
15
15
13
14
14
14
15
19

Dew Point (°C)

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

Relative Humidity (%)

48
43
40
37
33
32
32
35
42
48
53
57
58
60
63
64
65
66
66
66
66
62
52
46

Pressure (mb)

1023
1022
1022
1021
1021
1020
1020
1020
1020
1021
1021
1021
1022
1022
1022
1022
1022
1022
1022
1022
1022
1022
1022
1022

Ozone (du)

317
320
322
323
320
315
310
307
306
304
304
303
301
301
301
302
301
300
300
298
297
295
295
294

Thursday 3

Waning Gibbous 52%

21:54

14:15

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
10 Bad

Sun - Rise: 06:22, Set: 19:42, Transit: 13:01. Moon - Rise: 21:54, Set: 14:15. Civil Dark: 20:15 - 05:49. Nautical Dark: 20:56 - 05:08. Astro Dark: 21:40 - 04:24

Total Clouds (% Sky Obscured)

70
92
99
65
97
95
79
68
96
76
86
64
86
77
89
85
81
77
70
59
47
52
56
61

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
21
38
62
39
20
2
12
25
37
45
52
59
59
59
47
51
42
34

Medium Clouds (% Sky Obscured)

33
32
34
35
58
58
33
40
81
62
47
50
56
74
83
80
77
70
64
52
40
40
43
50

High Clouds (% Sky Obscured)

52
81
96
65
89
72
65
47
40
27
60
2
40
4
5
4
4
3
4
4
4
5
6
7

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
12
13
9
34
43
42
30
18
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
11
12
12
13
13
12
11
9
7
7
7
7
7
7
7
8
8
8
9
9
9
11
12

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

43
40
39
37
37
36
37
40
45
47
54
57
60
60
62
63
64
65
68
66
65
64
56
48

Pressure (mb)

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

Ozone (du)

293
292
291
292
292
290
290
290
290
290
291
290
290
290
290
288
288
287
286
285
285
284
284
285

Friday 4

Third Quarter 40%

22:42

15:34

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 Bad
00 Bad
01 Bad
02 Bad
03 Bad
04 Bad
05 Bad
06 Bad
07 Bad
08 Bad
09 Bad
10 Bad

Sun - Rise: 06:23, Set: 19:39, Transit: 13:01. Moon - Rise: 22:42, Set: 15:34. Civil Dark: 20:13 - 05:50. Nautical Dark: 20:53 - 05:10. Astro Dark: 21:37 - 04:26

Total Clouds (% Sky Obscured)

60
59
58
59
63
66
53
35
17
19
23
27
28
29
35
51
59
73
71
80
55
55
54
49

Low Clouds (% Sky Obscured)

39
43
46
32
16
14
14
13
10
12
13
17
27
24
10
5
0
0
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

51
53
54
44
32
22
20
19
16
19
23
27
28
24
30
30
40
45
45
55
55
50
30
17

High Clouds (% Sky Obscured)

7
5
5
6
8
10
4
2
0
1
1
1
1
6
11
19
21
24
26
28
25
28
38
49

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
8
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
Very Light Rain
Light Rain
Light Rain
Very Light Rain
Very Light Rain
Very Light Rain
Very Light Rain
None
None
None
None
None

Precipitation Probability (%)

1
0
0
1
1
1
6
8
7
13
19
24
51
65
71
63
63
61
62
58
44
39
29
9

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0.2
0.4
0.6
0.3
0.2
0.2
0.2
0
0
0
0
0

Wind Speed/Direction (mph)

14
14
14
15
13
12
12
8
4
3
2
2
2
3
4
5
5
5
6
6
7
8
9
11

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

10
10
10
10
10
10
10
12
13
14
14
14
14
16
16
17
17
17
17
17
16
16
15
13

Relative Humidity (%)

41
38
35
32
33
34
36
43
51
62
64
67
70
76
81
88
88
88
86
85
82
80
68
58

Pressure (mb)

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

Ozone (du)

285
284
283
282
283
284
285
285
286
286
286
286
286
287
288
288
289
290
291
294
297
301
305
309

Saturday 5

Waning Crescent 28%

23:47

16:40

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 OK
05 OK
06 OK
07 OK

Sun - Rise: 06:25, Set: 19:37, Transit: 13:00. Moon - Rise: 23:47, Set: 16:40. Civil Dark: 20:10 - 05:52. Nautical Dark: 20:51 - 05:12. Astro Dark: 21:34 - 04:29

Total Clouds (% Sky Obscured)

54
59
67
66
67
72
82
85
89
82
76
70
69
64
63
56
49
43
40
37
34

Low Clouds (% Sky Obscured)

16
33
48
42
38
36
43
50
52
47
43
37
36
35
38
35
39
43
40
37
34

Medium Clouds (% Sky Obscured)

24
33
46
46
49
49
42
40
34
34
34
33
38
44
50
35
20
4
2
1
0

High Clouds (% Sky Obscured)

54
58
49
43
41
40
32
27
18
22
29
31
22
9
6
4
2
0
6
11
15

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

Fog (%)

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

Precipitation Probability (%)

11
8
1
3
3
2
5
8
11
14
16
13
14
13
8
14
11
2
2
1
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

Wind Speed/Direction (mph)

13
13
13
14
14
13
12
11
9
8
6
5
4
4
5
6
5
5
5
4
4

Chance of Frost

Temperature (°C)

23
23
24
25
25
25
24
24
23
22
21
20
19
16
15
14
13
13
12
13
13

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

49
44
40
36
37
39
40
44
48
53
57
63
66
69
73
75
78
80
81
77
76

Pressure (mb)

1017
1017
1017
1017
1017
1018
1018
1018
1019
1020
1020
1021
1022
1022
1022
1023
1023
1024
1024
1025
1025

Ozone (du)

314
317
320
323
326
328
330
330
330
330
330
331
331
329
328
326
322
319
316
314
312

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

Generated: 30/08/26 11:24:12. Forecast: 30/08/26 to 05/09/26. Timezone: UTC+2.00