Clear Outside v1.0 - International Weather Forecasts For Astronomers

Sunday 23

Waxing Gibbous 83%

18:09

01:23

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

Sun - Rise: 06:05, Set: 20:04, Transit: 13:04. Moon - Rise: 18:09, Set: 01:23. Civil Dark: 20:39 - 05:30. Nautical Dark: 21:22 - 04:47. Astro Dark: 22:11 - 03:59

Total Clouds (% Sky Obscured)

64
57
56
42
45
54
65
45
71
37
34
46
48
47
83
64
34
7
0
0
0
0
39
16

Low Clouds (% Sky Obscured)

8
48
35
30
32
25
24
22
32
23
29
41
32
31
35
5
27
7
0
0
0
0
37
11

Medium Clouds (% Sky Obscured)

34
37
30
22
23
20
22
24
31
29
29
40
41
43
43
40
28
4
0
0
0
0
0
0

High Clouds (% Sky Obscured)

2
0
0
2
3
25
50
15
36
1
0
1
0
0
37
24
1
0
0
0
0
0
18
10

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
9
9
8
6
3
1
1
2
2
3
3
3
3
3
2
2
3
3
4
3

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

43
38
35
34
36
42
48
55
58
61
63
64
65
66
68
69
73
74
74
66
59
54
48
44

Pressure (mb)

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

Ozone (du)

324
325
324
322
322
324
324
326
326
327
326
325
325
326
324
324
326
325
326
327
327
326
325
322

Monday 24

Waxing Gibbous 89%

18:42

02:32

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

Sun - Rise: 06:06, Set: 20:02, Transit: 13:04. Moon - Rise: 18:42, Set: 02:32. Civil Dark: 20:37 - 05:32. Nautical Dark: 21:20 - 04:49. Astro Dark: 22:08 - 04:02

Total Clouds (% Sky Obscured)

38
18
7
32
49
42
24
0
18
33
40
35
61
55
36
22
34
22
28
45
41
83
84
79

Low Clouds (% Sky Obscured)

20
6
0
8
13
0
0
0
0
0
0
0
39
29
4
0
0
0
0
0
0
59
51
23

Medium Clouds (% Sky Obscured)

0
0
0
0
0
2
2
0
16
2
37
35
2
2
2
2
2
2
1
0
0
11
17
21

High Clouds (% Sky Obscured)

31
16
7
26
33
37
20
0
4
28
35
35
30
35
33
22
34
18
20
3
3
22
30
36

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)

3
4
4
5
5
6
5
5
4
4
4
5
5
5
4
4
4
4
4
5
8
9
11
11

Chance of Frost

Temperature (°C)

21
21
22
22
22
21
20
18
15
14
13
13
12
11
11
11
10
10
10
13
15
18
20
21

Feels Like (°C)

21
20
21
22
20
19
18
17
16
13
11
11
10
9
8
9
9
8
9
11
12
14
16
18

Dew Point (°C)

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

Relative Humidity (%)

40
38
37
37
37
39
49
57
62
66
70
71
71
73
75
74
76
77
74
64
59
52
48
43

Pressure (mb)

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

Ozone (du)

319
317
316
316
316
317
319
318
315
313
309
308
310
310
308
307
307
307
307
307
307
306
306
305

Tuesday 25

Waxing Gibbous 95%

19:07

03:46

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
11 Bad
12 Bad

Sun - Rise: 06:08, Set: 20:00, Transit: 13:03. Moon - Rise: 19:07, Set: 03:46. Civil Dark: 20:35 - 05:34. Nautical Dark: 21:18 - 04:51. Astro Dark: 22:05 - 04:04

Total Clouds (% Sky Obscured)

75
77
79
88
79
85
97
97
90
89
99
100
100
94
97
93
94
86
62
52
65
55
51
64

Low Clouds (% Sky Obscured)

0
0
0
3
4
0
0
0
0
5
12
13
34
36
28
23
37
30
13
24
35
44
29
14

Medium Clouds (% Sky Obscured)

22
52
79
88
75
78
83
74
71
75
86
100
100
90
93
89
89
81
55
51
47
39
35
27

High Clouds (% Sky Obscured)

39
25
32
31
13
24
60
84
73
47
88
100
44
39
29
15
0
0
0
3
13
1
7
25

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
2
6
20
1
1
4
4
2
3
3
2
4
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)

12
12
12
11
11
10
10
9
8
7
6
4
4
4
3
5
4
4
3
4
6
7
8
8

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

41
40
41
42
46
48
53
56
58
60
61
61
63
65
64
64
63
63
67
63
54
47
43
41

Pressure (mb)

1016
1016
1015
1015
1015
1015
1016
1016
1016
1017
1017
1018
1018
1018
1018
1018
1018
1018
1018
1019
1019
1019
1019
1019

Ozone (du)

306
305
305
305
306
307
308
308
309
308
308
309
309
309
307
306
305
304
303
302
301
300
299
299

Wednesday 26

Waxing Gibbous 98%

19:26

05:01

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
11 Bad
12 Bad

Sun - Rise: 06:09, Set: 19:58, Transit: 13:03. Moon - Rise: 19:26, Set: 05:01. Civil Dark: 20:33 - 05:35. Nautical Dark: 21:15 - 04:53. Astro Dark: 22:02 - 04:06

Total Clouds (% Sky Obscured)

72
78
80
83
94
84
79
61
66
63
84
73
67
78
66
66
88
82
69
91
80
66
55
82

Low Clouds (% Sky Obscured)

0
11
21
32
34
38
49
47
51
53
47
41
35
31
31
30
29
30
29
19
9
0
0
0

Medium Clouds (% Sky Obscured)

43
63
67
42
38
66
63
50
53
50
38
22
15
43
9
7
11
14
16
11
25
33
12
59

High Clouds (% Sky Obscured)

45
59
42
65
60
31
6
5
6
6
23
27
30
53
53
66
86
79
67
91
75
56
46
58

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
1
2
1
0
1
0
0
0
0
0
0
0
0
0
1
1
1
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

21
21
23
23
24
22
22
20
20
18
18
16
16
15
15
15
15
14
16
17
18
20
23
25

Dew Point (°C)

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

Relative Humidity (%)

39
39
38
38
38
41
49
52
55
57
60
63
65
64
64
66
67
67
68
61
55
49
46
42

Pressure (mb)

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

Ozone (du)

299
299
299
298
298
298
298
299
300
299
298
297
297
297
296
295
296
295
295
295
293
293
292
293

Thursday 27

Waxing Gibbous 100%

19:42

06:16

13 Bad
14 Bad
15 Bad
16 Bad
17 Bad
18 OK
19 Good
20 Good
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
11 Bad
12 Bad

Sun - Rise: 06:11, Set: 19:56, Transit: 13:03. Moon - Rise: 19:42, Set: 06:16. Civil Dark: 20:30 - 05:37. Nautical Dark: 21:13 - 04:55. Astro Dark: 21:59 - 04:09

Total Clouds (% Sky Obscured)

86
85
84
82
72
45
11
7
33
45
64
61
70
75
79
84
89
92
94
90
85
81
83
84

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
11
25

Medium Clouds (% Sky Obscured)

70
63
52
26
46
27
7
3
3
0
0
1
1
10
19
27
34
42
51
62
74
81
79
72

High Clouds (% Sky Obscured)

48
77
80
81
68
27
3
4
33
45
64
58
68
73
77
84
84
83
83
71
56
39
41
44

ISS Passover

Visibility (miles)

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

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
Very Light Rain
Very Light Rain
Light Rain
Light Rain

Precipitation Probability (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
21
32
43
52
59
65
95
95

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.2
0.3
1.2
2

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

39
36
35
35
41
45
48
52
55
55
56
60
61
64
64
64
64
65
66
67
69
73
75
81

Pressure (mb)

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

Ozone (du)

294
293
293
296
299
303
300
299
296
294
294
293
293
291
291
290
290
290
291
292
293
294
295
299

Friday 28

Full Moon 99%

19:55

07:31

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
11 Bad
12 Bad

Sun - Rise: 06:12, Set: 19:54, Transit: 13:03. Moon - Rise: 19:55, Set: 07:31. Civil Dark: 20:28 - 05:39. Nautical Dark: 21:10 - 04:57. Astro Dark: 21:57 - 04:11

Total Clouds (% Sky Obscured)

87
92
96
99
83
72
66
67
74
76
76
76
72
68
68
69
60
48
61
69
68
65
70
76

Low Clouds (% Sky Obscured)

49
68
67
59
46
31
17
15
15
15
28
45
54
47
41
34
24
13
3
4
5
7
27
47

Medium Clouds (% Sky Obscured)

69
71
69
68
53
40
29
38
57
70
71
71
66
65
60
50
40
35
48
46
47
51
55
57

High Clouds (% Sky Obscured)

48
67
83
98
83
72
66
67
74
76
76
76
72
45
40
35
37
39
41
34
25
0
21
35

ISS Passover

Visibility (miles)

4
3
5
7
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

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

Precipitation Probability (%)

95
68
54
24
31
22
13
19
24
30
54
91
95
95
95
95
95
74
15
15
9
5
20
25

Precipitation Amount (mm)

3.1
0
0
0
0
0
0
0
0
0
0
0.4
1.5
1.4
1.3
1.3
0.9
0.3
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

25
26
21
20
19
19
19
20
19
19
18
17
17
16
14
14
14
14
14
14
15
15
15
15

Dew Point (°C)

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

Relative Humidity (%)

85
91
81
74
66
66
66
67
68
70
71
72
76
77
77
78
78
75
74
72
66
62
57
56

Pressure (mb)

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

Ozone (du)

303
307
312
317
322
324
325
327
327
327
327
325
324
323
323
323
323
324
324
324
327
330
332
331

Saturday 29

Waning Gibbous 96%

20:08

08:48

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

Sun - Rise: 06:14, Set: 19:52, Transit: 13:02. Moon - Rise: 20:08, Set: 08:48. Civil Dark: 20:26 - 05:40. Nautical Dark: 21:08 - 04:59. Astro Dark: 21:54 - 04:13

Total Clouds (% Sky Obscured)

86
88
91
95
78
64
58
58
53
52
52
52
53
53
50
49
56
61
65

Low Clouds (% Sky Obscured)

69
71
72
73
54
35
20
20
19
13
6
4
0
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

58
36
17
1
12
19
28
23
18
13
16
16
14
16
18
21
18
16
8

High Clouds (% Sky Obscured)

39
28
30
26
26
26
31
21
13
1
20
41
53
53
50
49
56
59
65

ISS Passover

Visibility (miles)

8
8
8
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

Precipitation Type

None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

26
31
31
25
26
23
18
15
17
17
17
12
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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

15
16
18
17
17
17
17
17
15
16
16
15
15
15
12
12
11
12
12

Dew Point (°C)

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

Relative Humidity (%)

53
52
51
50
49
51
53
55
58
61
64
67
69
73
74
75
76
75
73

Pressure (mb)

1010
1010
1010
1010
1010
1011
1011
1012
1012
1012
1012
1012
1012
1012
1012
1012
1012
1012
1012

Ozone (du)

329
327
325
324
322
324
325
327
327
326
326
326
326
326
328
329
331
331
332

Forecast for Letňany, Praha 18, Czech Republic (50.14,14.52)

Generated: 23/08/26 12:59:18. Forecast: 23/08/26 to 29/08/26. Timezone: UTC+2.00