Clear Outside v1.0 - International Weather Forecasts For Astronomers

Sunday 16

Waxing Crescent 18%

11:45

21:25

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
11 Bad

Sun - Rise: 05:55, Set: 20:18, Transit: 13:06. Moon - Rise: 11:45, Set: 21:25. Civil Dark: 20:54 - 05:19. Nautical Dark: 21:39 - 04:34. Astro Dark: 22:32 - 03:42

Total Clouds (% Sky Obscured)

88
90
92
100
100
74
70
65
60
60
60
77
99
100
100
100
98
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

4
10
5
4
0
7
6
13
17
9
7
20
6
24
34
65
47
50
62
58
46
61
63
75

Medium Clouds (% Sky Obscured)

80
75
30
33
1
5
8
10
8
9
2
4
12
56
54
62
47
45
51
63
80
100
74
78

High Clouds (% Sky Obscured)

88
90
87
100
100
66
65
60
45
45
41
64
98
100
100
100
95
100
100
100
100
100
100
100

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
7
9
7
9
5
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
Light Rain
Light Rain
None
Light Rain
Light Rain
None
None
None
Very Light Rain

Precipitation Probability (%)

33
12
0
0
0
0
0
0
0
6
21
33
34
43
52
95
95
62
68
93
37
19
24
83

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
2.1
0
0.4
0.8
0
0
0
0.3

Wind Speed/Direction (mph)

6
3
2
3
5
5
5
6
6
5
3
2
2
2
2
2
2
2
2
1
2
4
5
6

Chance of Frost

Temperature (°C)

21
22
24
25
26
27
27
26
25
22
22
21
20
19
18
17
17
17
17
18
18
19
20
21

Feels Like (°C)

19
19
22
24
25
26
28
26
25
23
23
24
22
19
19
18
18
19
18
19
19
20
21
22

Dew Point (°C)

8
10
15
13
13
13
12
13
16
17
18
18
17
16
15
15
15
16
16
16
16
15
15
14

Relative Humidity (%)

43
44
57
46
42
41
41
44
57
73
77
80
84
84
83
83
88
90
92
88
83
76
72
64

Pressure (mb)

1015
1014
1014
1014
1014
1014
1013
1013
1013
1014
1014
1014
1013
1013
1013
1013
1013
1012
1012
1011
1011
1011
1011
1011

Ozone (du)

310
310
312
319
324
327
326
325
326
325
323
321
322
320
322
326
325
324
324
324
325
326
328
329

Monday 17

Waxing Crescent 26%

No Rise

21:40

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
11 Bad

Sun - Rise: 05:56, Set: 20:16, Transit: 13:05. Moon - Rise: No Rise, Set: 21:40. Civil Dark: 20:52 - 05:21. Nautical Dark: 21:37 - 04:36. Astro Dark: 22:29 - 03:44

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
92
95
54
61
88
87
55
59
46
63
56
69
76
88
88
93

Low Clouds (% Sky Obscured)

55
49
67
72
78
78
76
61
73
61
26
34
61
54
34
53
46
59
56
57
65
64
42
43

Medium Clouds (% Sky Obscured)

74
80
100
96
100
90
85
67
56
54
39
38
51
69
37
27
2
12
31
22
27
35
33
47

High Clouds (% Sky Obscured)

100
100
100
59
100
100
72
1
0
0
0
0
0
0
0
0
0
1
2
4
3
6
61
55

ISS Passover

Visibility (miles)

8
2
2
6
9
9
9
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
0
0
0
0
0

Precipitation Type

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

Precipitation Probability (%)

95
95
95
95
93
65
47
34
35
8
6
4
30
25
10
2
1
1
8
2
2
3
13
10

Precipitation Amount (mm)

0.9
0.9
1.7
1.3
0.5
0.3
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

21
22
22
18
16
17
16
15
14
14
14
15
15
14
14
15
14
14
15
15
14
14
16
16

Dew Point (°C)

13
15
13
16
16
15
14
14
14
14
13
14
14
13
13
13
13
13
13
13
12
12
11
9

Relative Humidity (%)

62
65
55
74
82
80
78
79
81
83
81
89
90
85
86
89
90
92
92
89
78
74
68
56

Pressure (mb)

1010
1010
1010
1010
1010
1010
1011
1011
1011
1012
1012
1013
1013
1013
1013
1013
1013
1013
1013
1013
1014
1014
1014
1013

Ozone (du)

327
328
329
328
327
331
340
342
347
349
352
354
355
355
350
343
337
333
331
329
327
324
323
321

Tuesday 18

Waxing Crescent 36%

13:00

21:58

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
11 Bad

Sun - Rise: 05:58, Set: 20:14, Transit: 13:05. Moon - Rise: 13:00, Set: 21:58. Civil Dark: 20:50 - 05:22. Nautical Dark: 21:35 - 04:38. Astro Dark: 22:26 - 03:47

Total Clouds (% Sky Obscured)

100
100
100
97
93
100
99
100
100
93
100
98
95
94
97
99
91
96
100
98
98
97
98
98

Low Clouds (% Sky Obscured)

54
46
30
59
63
76
72
50
45
59
93
85
80
70
72
68
80
74
44
52
57
53
71
78

Medium Clouds (% Sky Obscured)

86
75
92
90
90
92
88
80
82
82
100
96
92
74
88
94
78
88
92
95
96
89
95
94

High Clouds (% Sky Obscured)

100
100
98
84
58
100
93
100
98
76
85
72
69
72
52
70
72
70
92
14
55
9
8
59

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
7
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
Light Rain
None
None
None
None
None
None
None
None
None
None
Light Rain

Precipitation Probability (%)

0
0
0
0
2
4
6
8
9
29
25
37
48
17
14
6
8
4
19
24
20
35
52
82

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0.5
0
0
0
0
0
0
0
0
0
0
0.7

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

16
16
17
18
18
17
17
16
16
16
15
15
15
15
15
15
15
15
15
16
16
17
18
19

Dew Point (°C)

7
5
5
4
5
7
9
8
9
9
10
11
11
12
13
13
13
13
14
14
14
13
12
16

Relative Humidity (%)

46
39
36
33
34
41
47
49
56
58
65
71
69
75
81
81
82
79
83
83
78
72
62
80

Pressure (mb)

1013
1013
1012
1012
1011
1011
1011
1011
1011
1012
1012
1012
1011
1011
1011
1010
1010
1010
1010
1009
1009
1009
1009
1009

Ozone (du)

319
320
319
318
317
318
318
318
316
316
315
314
314
313
312
310
309
309
308
308
309
309
309
309

Wednesday 19

Waxing Crescent 46%

14:14

22:21

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
11 Bad

Sun - Rise: 05:59, Set: 20:12, Transit: 13:05. Moon - Rise: 14:14, Set: 22:21. Civil Dark: 20:48 - 05:24. Nautical Dark: 21:32 - 04:40. Astro Dark: 22:23 - 03:49

Total Clouds (% Sky Obscured)

97
86
68
99
100
98
97
95
94
97
91
98
99
100
100
100
98
85
70
65
63
100
100
100

Low Clouds (% Sky Obscured)

76
50
27
69
66
62
46
55
0
0
0
0
0
0
0
1
2
6
10
16
28
43
60
51

Medium Clouds (% Sky Obscured)

93
72
59
54
60
91
89
87
78
87
67
69
71
69
77
81
85
80
70
65
63
85
80
75

High Clouds (% Sky Obscured)

4
1
17
34
50
50
48
44
73
80
71
86
92
99
100
100
98
85
70
63
49
80
73
70

ISS Passover

Visibility (miles)

3
9
9
5
9
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
None
Light Rain
Very Light Rain
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
Very Light Rain
Light Rain

Precipitation Probability (%)

83
31
57
51
48
41
17
9
2
2
0
1
1
0
1
1
0
13
18
23
31
40
45
64

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

18
17
12
12
13
16
16
15
15
15
15
15
15
15
15
14
14
14
14
14
12
11
9
7

Relative Humidity (%)

88
86
60
54
61
69
76
72
74
82
85
85
86
89
89
89
90
90
90
86
73
63
53
45

Pressure (mb)

1009
1008
1008
1007
1007
1008
1009
1009
1010
1011
1011
1012
1012
1012
1012
1012
1012
1012
1012
1012
1012
1012
1012
1012

Ozone (du)

308
309
310
311
311
309
309
308
312
315
315
316
317
319
320
319
318
320
321
321
320
320
320
319

Thursday 20

First Quarter 56%

15:25

22:50

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
11 Bad

Sun - Rise: 06:01, Set: 20:10, Transit: 13:05. Moon - Rise: 15:25, Set: 22:50. Civil Dark: 20:46 - 05:25. Nautical Dark: 21:30 - 04:42. Astro Dark: 22:20 - 03:52

Total Clouds (% Sky Obscured)

55
53
52
56
61
78
100
100
90
100
100
97
83
73
84
89
97
95
93
89
92
95
100
100

Low Clouds (% Sky Obscured)

42
33
39
38
41
47
64
28
30
38
42
45
38
35
37
44
52
42
35
26
26
25
28
32

Medium Clouds (% Sky Obscured)

55
53
52
48
45
48
56
60
65
70
65
66
62
58
67
71
75
80
80
76
66
63
66
63

High Clouds (% Sky Obscured)

16
13
26
37
49
53
97
100
82
100
100
94
68
50
68
79
93
86
80
74
82
87
91
93

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

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

Precipitation Probability (%)

84
92
73
57
32
37
38
33
40
37
23
29
25
20
31
20
6
24
35
43
54
63
71
95

Precipitation Amount (mm)

1
1.2
0.6
0.4
0.2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.2
0.3
0.4
0.5
0.8

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

6
4
3
2
1
2
2
4
7
8
10
10
13
15
15
15
14
14
13
12
11
7
4
1

Relative Humidity (%)

39
33
29
26
24
26
26
31
40
48
54
57
71
80
83
83
81
79
73
66
61
47
35
27

Pressure (mb)

1011
1011
1011
1010
1009
1009
1009
1009
1009
1009
1009
1009
1009
1009
1009
1009
1009
1009
1009
1009
1009
1010
1010
1010

Ozone (du)

319
320
320
319
317
316
316
316
317
316
315
316
317
316
315
316
317
318
317
316
316
317
318
319

Friday 21

Waxing Gibbous 66%

16:30

23:30

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 OK
06 OK
07 Good
08 OK
09 OK
10 OK
11 Bad

Sun - Rise: 06:02, Set: 20:08, Transit: 13:04. Moon - Rise: 16:30, Set: 23:30. Civil Dark: 20:43 - 05:27. Nautical Dark: 21:27 - 04:44. Astro Dark: 22:17 - 03:54

Total Clouds (% Sky Obscured)

100
99
95
93
86
82
78
74
73
65
61
56
55
59
62
59
57
42
22
4
18
33
46
57

Low Clouds (% Sky Obscured)

21
30
21
23
29
32
35
39
28
16
5
5
3
1
1
1
1
0
0
0
6
7
10
12

Medium Clouds (% Sky Obscured)

66
57
56
56
56
64
63
63
63
59
60
56
55
59
62
59
57
41
18
0
3
6
8
28

High Clouds (% Sky Obscured)

96
99
95
93
86
82
78
70
65
41
31
32
33
33
30
20
4
2
1
1
1
2
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

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

Precipitation Probability (%)

95
95
95
95
94
94
89
70
59
45
19
17
12
5
4
2
0
1
1
0
1
2
2
4

Precipitation Amount (mm)

1
1.2
1.1
0.9
0.4
0.6
0.6
0.3
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

25
23
21
21
20
19
21
23
26
33
42
52
54
56
56
59
62
65
61
58
54
48
43
38

Pressure (mb)

1010
1010
1010
1009
1009
1009
1009
1009
1010
1010
1011
1011
1011
1011
1011
1012
1012
1012
1013
1013
1013
1014
1014
1014

Ozone (du)

320
321
321
322
323
324
323
322
321
319
318
316
314
312
310
309
308
308
308
308
308
307
307
306

Saturday 22

Waxing Gibbous 75%

17:25

00:21

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

Sun - Rise: 06:03, Set: 20:06, Transit: 13:04. Moon - Rise: 17:25, Set: 00:21. Civil Dark: 20:41 - 05:29. Nautical Dark: 21:25 - 04:46. Astro Dark: 22:14 - 03:57

Total Clouds (% Sky Obscured)

65
74
72
69
71
72
72
70
65
63
60
52
49
46
58
73
82
79
72
64

Low Clouds (% Sky Obscured)

17
20
37
56
71
68
66
63
61
61
58
48
39
21
18
7
0
0
0
0

Medium Clouds (% Sky Obscured)

46
62
58
54
49
53
57
59
62
60
53
44
41
42
54
66
79
68
53
37

High Clouds (% Sky Obscured)

0
0
1
6
17
19
21
25
18
10
0
2
4
5
4
3
2
16
31
47

ISS Passover

Visibility (miles)

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

Precipitation Type

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

Precipitation Probability (%)

4
1
1
0
0
1
1
0
5
7
6
9
9
8
10
10
9
8
5
0

Precipitation Amount (mm)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

18
18
18
23
23
23
24
24
25
17
17
17
16
15
14
13
12
12
13
13

Dew Point (°C)

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

Relative Humidity (%)

35
31
28
29
29
29
34
40
47
54
62
69
70
73
73
71
70
70
68
63

Pressure (mb)

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

Ozone (du)

306
306
306
306
306
305
307
309
311
313
314
316
315
314
313
313
314
314
315
316

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

Generated: 16/08/26 12:09:47. Forecast: 16/08/26 to 22/08/26. Timezone: UTC+2.00