Clear Outside v1.0 - International Weather Forecasts For Astronomers

Sunday 6

Waning Crescent 18%

01:06

17:29

14 OK
15 OK
16 OK
17 OK
18 Good
19 Good
20 OK
21 Good
22 Good
23 Good
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: 06:26, Set: 19:35, Transit: 12:59. Moon - Rise: 01:06, Set: 17:29. Civil Dark: 20:08 - 05:53. Nautical Dark: 20:48 - 05:13. Astro Dark: 21:31 - 04:30

Total Clouds (% Sky Obscured)

45
38
32
27
6
9
28
6
10
11
100
97
78
96
63
94
100
95
100
100
100
100
95
100

Low Clouds (% Sky Obscured)

29
9
7
8
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
3
20
2
2
31
53
62
80
79
70
71
62
71
56
80

High Clouds (% Sky Obscured)

9
2
2
2
5
8
26
6
8
7
100
97
78
93
27
81
100
84
100
100
100
98
92
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

17
18
19
19
19
18
16
15
14
13
13
10
10
9
8
9
8
9
10
12
13
15
17
19

Dew Point (°C)

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

Relative Humidity (%)

36
34
34
33
37
47
53
55
58
60
62
63
63
63
64
67
67
68
62
55
48
43
38
33

Pressure (mb)

1027
1026
1026
1026
1026
1026
1026
1027
1027
1027
1027
1027
1027
1026
1026
1026
1026
1025
1026
1025
1025
1025
1024
1024

Ozone (du)

299
298
296
296
296
295
294
292
290
288
288
288
288
287
288
288
288
290
290
290
291
292
293
294

Monday 7

Waning Crescent 10%

02:33

18:04

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

Sun - Rise: 06:27, Set: 19:33, Transit: 12:59. Moon - Rise: 02:33, Set: 18:04. Civil Dark: 20:06 - 05:54. Nautical Dark: 20:46 - 05:15. Astro Dark: 21:29 - 04:32

Total Clouds (% Sky Obscured)

100
100
100
100
100
76
66
51
32
28
36
58
27
14
25
22
12
15
43
27
32
15
44
51

Low Clouds (% Sky Obscured)

2
9
3
2
5
20
10
0
0
0
12
11
0
0
0
0
0
0
41
26
12
0
0
18

Medium Clouds (% Sky Obscured)

82
90
68
96
96
74
59
50
26
21
22
41
21
12
19
15
6
0
24
8
14
7
35
38

High Clouds (% Sky Obscured)

100
99
100
100
96
42
0
5
6
2
2
0
0
0
2
3
5
14
14
7
17
8
10
8

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
1
5
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
6

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
3
4
3
2
1
2
2
2
2
2
2
2
2
2
2
3
3
4
4
5
6
8

Chance of Frost

Temperature (°C)

22
23
23
23
23
22
21
19
18
18
17
16
16
15
15
15
15
15
16
19
22
24
26
28

Feels Like (°C)

19
20
22
22
22
21
19
19
18
18
18
17
17
17
17
16
16
16
17
19
22
25
26
28

Dew Point (°C)

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

Relative Humidity (%)

32
30
36
30
37
39
38
42
46
49
53
58
61
66
69
71
74
74
67
60
53
45
38
35

Pressure (mb)

1023
1022
1021
1021
1020
1020
1020
1020
1020
1019
1019
1019
1018
1018
1017
1017
1017
1017
1017
1016
1016
1015
1014
1013

Ozone (du)

295
297
299
300
298
297
297
295
294
293
292
293
293
292
291
291
291
291
291
291
290
290
290
290

Tuesday 8

Waning Crescent 4%

04:00

18:29

14 Bad
15 OK
16 OK
17 Bad
18 Bad
19 Bad
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
10 Bad
11 Bad
12 Bad
13 Bad

Sun - Rise: 06:29, Set: 19:30, Transit: 12:59. Moon - Rise: 04:00, Set: 18:29. Civil Dark: 20:03 - 05:56. Nautical Dark: 20:43 - 05:16. Astro Dark: 21:26 - 04:34

Total Clouds (% Sky Obscured)

50
30
40
49
69
53
42
43
21
28
73
86
90
97
96
100
100
100
99
62
98
86
93
99

Low Clouds (% Sky Obscured)

0
0
13
21
18
0
9
14
7
0
0
25
44
49
48
60
48
80
73
62
59
59
57
61

Medium Clouds (% Sky Obscured)

45
23
20
22
29
41
29
19
0
23
53
84
88
96
96
100
100
100
98
62
89
56
76
79

High Clouds (% Sky Obscured)

1
6
13
39
63
47
21
3
3
3
50
66
60
60
60
23
65
100
62
62
91
86
88
94

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
8
9
9
5
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
Very Light Rain
Very Light Rain
Moderate Rain
Light Rain
Very Light Rain
Light Rain
Light Rain
None
Light Rain
Very Light Rain
None
Very Light Rain
Light Rain

Precipitation Probability (%)

7
0
0
0
0
5
5
5
25
22
37
63
86
95
95
67
77
69
46
62
64
58
69
77

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0.3
0.3
2.8
0.9
0.2
0.5
0.4
0
0.4
0.3
0
0.3
0.4

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

28
28
28
29
28
27
24
23
22
21
20
19
19
19
18
18
18
18
18
19
19
20
20
21

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

32
30
30
33
39
45
50
52
53
58
62
70
77
76
78
83
82
86
85
73
65
56
48
43

Pressure (mb)

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

Ozone (du)

291
292
292
292
292
293
293
293
293
292
292
291
291
291
291
290
291
291
293
292
292
293
292
291

Wednesday 9

Waning Crescent 1%

05:25

18:48

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
13 Bad

Sun - Rise: 06:30, Set: 19:28, Transit: 12:58. Moon - Rise: 05:25, Set: 18:48. Civil Dark: 20:01 - 05:58. Nautical Dark: 20:41 - 05:18. Astro Dark: 21:23 - 04:36

Total Clouds (% Sky Obscured)

98
100
100
100
100
100
100
100
100
100
100
100
100
100
100
95
89
85
84
47
52
85
91
68

Low Clouds (% Sky Obscured)

56
58
56
56
50
40
37
34
30
26
26
24
25
12
8
5
3
0
18
34
51
52
50
42

Medium Clouds (% Sky Obscured)

71
94
100
99
98
97
98
99
100
100
100
100
100
100
100
82
63
33
1
3
4
13
22
28

High Clouds (% Sky Obscured)

93
100
100
100
100
100
95
89
84
89
95
100
100
100
100
95
89
85
76
28
22
31
44
55

ISS Passover

Visibility (miles)

9
9
9
9
9
9
3
6
4
9
9
8
4
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
Very Light Rain
Very Light Rain
Very Light Rain
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

87
88
86
79
70
75
86
85
70
56
42
47
38
24
18
15
9
14
14
11
4
3
1
0

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

7
8
7
6
8
7
4
5
4
4
3
4
4
5
5
6
7
8
9
10
11
13
15
15

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

8
8
9
10
11
11
12
14
14
14
14
14
14
13
13
12
12
12
11
10
7
6
5
4

Relative Humidity (%)

42
42
46
54
57
60
70
86
90
92
93
93
92
86
87
87
87
84
78
67
54
45
42
39

Pressure (mb)

1010
1010
1010
1010
1010
1011
1011
1012
1012
1012
1013
1013
1013
1013
1013
1013
1013
1014
1014
1015
1015
1016
1016
1016

Ozone (du)

292
292
291
291
291
292
295
298
299
298
298
300
302
303
304
307
310
315
320
323
323
323
324
327

Thursday 10

Waning Crescent 0%

06:46

19:03

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

Sun - Rise: 06:32, Set: 19:26, Transit: 12:58. Moon - Rise: 06:46, Set: 19:03. Civil Dark: 19:59 - 05:59. Nautical Dark: 20:38 - 05:20. Astro Dark: 21:21 - 04:38

Total Clouds (% Sky Obscured)

78
45
59
25
46
70
38
11
1
1
3
7
17
27
37
35
38
43
54
68
80
82
86
91

Low Clouds (% Sky Obscured)

44
34
33
18
14
15
5
0
0
0
0
0
0
0
0
9
18
28
18
9
0
0
0
0

Medium Clouds (% Sky Obscured)

24
21
16
19
24
27
20
11
0
0
0
0
1
2
2
1
1
0
0
0
0
5
10
14

High Clouds (% Sky Obscured)

34
17
0
0
0
0
0
2
0
0
2
6
16
25
30
27
24
21
39
63
80
82
86
91

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)

15
12
13
12
9
7
5
4
5
5
4
3
3
2
2
3
2
2
2
2
2
3
3
4

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

15
14
16
15
17
15
14
14
13
13
12
11
11
10
9
9
8
7
6
11
13
14
15
15

Dew Point (°C)

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

Relative Humidity (%)

39
37
37
42
43
46
44
53
60
62
63
64
66
67
68
68
67
63
61
54
48
42
38
35

Pressure (mb)

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

Ozone (du)

329
330
327
323
320
320
319
317
316
315
314
313
312
312
312
312
312
312
313
311
310
308
306
304

Friday 11

New Moon 2%

08:05

19:17

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 OK
09 OK
10 Good
11 OK
12 OK
13 OK

Sun - Rise: 06:33, Set: 19:24, Transit: 12:58. Moon - Rise: 08:05, Set: 19:17. Civil Dark: 19:57 - 06:01. Nautical Dark: 20:36 - 05:21. Astro Dark: 21:18 - 04:40

Total Clouds (% Sky Obscured)

93
96
100
100
100
100
100
100
100
97
93
89
81
74
67
56
51
49
34
22
9
19
25
35

Low Clouds (% Sky Obscured)

0
0
0
1
2
3
5
8
11
12
8
0
0
0
0
0
0
0
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

22
31
41
57
73
88
87
85
85
77
69
60
47
32
16
14
13
20
15
12
8
19
25
35

High Clouds (% Sky Obscured)

93
96
100
100
100
100
100
100
100
93
86
79
61
45
27
18
9
0
0
0
0
0
1
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)

4
4
3
3
3
3
3
3
3
3
3
2
2
1
2
2
2
2
3
3
3
3
4
4

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

16
20
19
19
19
19
20
14
14
14
14
14
14
11
11
11
11
9
9
13
14
16
17
18

Dew Point (°C)

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

Relative Humidity (%)

32
31
31
31
34
37
42
44
46
49
52
55
58
59
60
61
62
61
59
57
53
51
47
43

Pressure (mb)

1020
1020
1020
1020
1020
1020
1021
1021
1022
1022
1022
1023
1023
1023
1023
1024
1024
1024
1025
1025
1025
1025
1024
1024

Ozone (du)

302
302
301
301
301
301
301
305
309
313
314
314
314
313
312
310
310
309
308
307
307
306
305
305

Saturday 12

Waxing Crescent 2%

09:22

19:31

14 OK
15 OK
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 OK

Sun - Rise: 06:35, Set: 19:22, Transit: 12:57. Moon - Rise: 09:22, Set: 19:31. Civil Dark: 19:54 - 06:02. Nautical Dark: 20:34 - 05:23. Astro Dark: 21:15 - 04:42

Total Clouds (% Sky Obscured)

38
45
56
54
54
53
60
66
69
76
84
91
88
84
80
69
56
44

Low Clouds (% Sky Obscured)

2
5
7
6
5
4
6
7
7
5
5
11
24
38
51
55
56
44

Medium Clouds (% Sky Obscured)

38
45
47
32
23
21
16
13
10
14
17
15
14
10
9
8
8
2

High Clouds (% Sky Obscured)

9
16
24
26
28
28
42
52
69
75
80
80
77
74
72
47
20
3

ISS Passover

Visibility (miles)

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

Precipitation Type

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
1
1
0

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

5
5
4
4
4
3
4
3
3
3
3
3
3
2
2
2
2
2

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

18
24
23
22
23
23
24
18
17
16
16
16
16
14
14
14
14
13

Dew Point (°C)

8
8
8
8
8
8
9
9
8
8
8
9
9
9
9
9
9
8

Relative Humidity (%)

40
39
39
39
43
47
52
55
56
58
60
63
65
68
69
71
69
67

Pressure (mb)

1024
1023
1023
1023
1023
1023
1024
1024
1024
1024
1024
1024
1024
1024
1024
1024
1024
1024

Ozone (du)

305
303
301
300
299
298
297
297
297
297
296
295
293
292
291
290
290
290

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

Generated: 06/09/26 14:29:01. Forecast: 06/09/26 to 12/09/26. Timezone: UTC+2.00