Clear Outside v1.0 - International Weather Forecasts For Astronomers

Sunday 13

Waxing Crescent 13%

10:39

19:45

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
14 Bad
15 Bad
16 Bad

Sun - Rise: 06:36, Set: 19:19, Transit: 12:57. Moon - Rise: 10:39, Set: 19:45. Civil Dark: 19:52 - 06:04. Nautical Dark: 20:31 - 05:25. Astro Dark: 21:13 - 04:44

Total Clouds (% Sky Obscured)

100
100
100
100
100
97
100
98
100
100
99
95
93
97
96
90
96
96
83
66
77
81
74
71

Low Clouds (% Sky Obscured)

80
72
72
80
58
58
68
71
84
74
57
65
86
74
67
63
73
87
65
55
56
58
47
53

Medium Clouds (% Sky Obscured)

65
92
78
87
89
89
100
93
91
97
98
86
78
93
92
70
63
60
27
0
25
30
23
21

High Clouds (% Sky Obscured)

77
81
100
100
100
41
59
47
100
95
56
44
2
2
0
4
36
2
2
2
5
4
4
9

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
6
8
9
9
9
7
6
5
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
Very Light Rain
None
Very Light Rain
Light Rain
Very Light Rain
Very Light Rain
None
None
None
None
None
None
None
None

Precipitation Probability (%)

4
17
46
27
45
44
45
56
54
50
55
42
58
74
71
68
42
29
42
34
16
10
8
18

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

13
13
13
13
13
14
14
14
14
14
14
14
14
14
14
15
16
16
15
14
13
13
14
13

Relative Humidity (%)

73
74
77
81
82
87
89
89
93
95
95
95
93
95
96
95
95
93
83
74
71
71
71
66

Pressure (mb)

1020
1019
1019
1020
1020
1020
1020
1020
1020
1020
1020
1020
1021
1021
1021
1022
1023
1023
1024
1024
1024
1024
1024
1024

Ozone (du)

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

Monday 14

Waxing Crescent 21%

11:55

20:02

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

Sun - Rise: 06:38, Set: 19:17, Transit: 12:56. Moon - Rise: 11:55, Set: 20:02. Civil Dark: 19:50 - 06:05. Nautical Dark: 20:29 - 05:27. Astro Dark: 21:10 - 04:46

Total Clouds (% Sky Obscured)

67
52
52
26
7
6
25
35
29
51
45
64
47
50
51
47
24
2
18
34
22
17
21
26

Low Clouds (% Sky Obscured)

54
34
41
15
0
0
0
0
29
40
45
57
47
50
51
47
24
0
18
34
22
17
21
26

Medium Clouds (% Sky Obscured)

18
7
2
14
2
4
25
2
2
2
2
5
4
10
6
2
1
0
2
5
10
2
2
2

High Clouds (% Sky Obscured)

6
6
23
8
4
2
2
30
4
19
9
51
6
2
0
2
0
2
0
0
0
0
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
2
8
16
61
31
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 (%)

4
16
1
0
1
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
6
4
2
1
1
2
2
2
2
2
2
1
2
2
1
2
3
3
3
3
3
3
3

Chance of Frost

Temperature (°C)

19
19
18
16
15
15
14
13
11
10
10
10
10
10
10
11
12
15
17
20
21
22
23
23

Feels Like (°C)

19
19
18
16
17
17
15
13
12
12
10
12
11
11
11
12
13
16
19
21
22
24
25
25

Dew Point (°C)

13
13
13
11
12
11
11
10
9
8
8
8
8
8
8
8
7
8
9
10
9
9
9
8

Relative Humidity (%)

64
67
72
74
79
80
83
84
86
85
87
88
88
88
88
81
71
63
57
52
46
42
39
37

Pressure (mb)

1024
1024
1024
1025
1025
1025
1025
1025
1025
1025
1025
1024
1024
1024
1024
1024
1024
1024
1023
1022
1021
1020
1020
1019

Ozone (du)

299
297
295
294
294
293
291
291
291
290
289
290
291
290
289
290
291
290
288
287
287
287
287
287

Tuesday 15

Waxing Crescent 29%

13:08

20:23

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

Sun - Rise: 06:39, Set: 19:15, Transit: 12:56. Moon - Rise: 13:08, Set: 20:23. Civil Dark: 19:48 - 06:07. Nautical Dark: 20:26 - 05:28. Astro Dark: 21:07 - 04:47

Total Clouds (% Sky Obscured)

24
20
6
5
36
23
28
42
49
49
39
44
46
44
48
23
40
29
67
71
82
97
80
100

Low Clouds (% Sky Obscured)

24
20
5
2
33
14
25
16
23
30
39
44
46
29
23
9
7
24
28
39
58
59
56
56

Medium Clouds (% Sky Obscured)

2
3
3
3
3
2
2
14
48
33
39
41
42
43
41
19
35
21
39
43
59
58
58
62

High Clouds (% Sky Obscured)

0
0
0
0
0
7
14
42
49
49
39
40
12
11
15
7
4
8
25
71
82
95
72
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
Very Light Rain
Light Rain
Light Rain
Light Rain
Light Rain

Precipitation Probability (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
7
50
77
70
91
95

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.3
0.6
0.4
0.5
0.8

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

25
25
22
19
18
17
17
17
16
16
16
16
15
15
14
16
18
20
22
23
23
22
21
21

Dew Point (°C)

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

Relative Humidity (%)

37
45
50
53
55
58
60
64
67
68
69
71
71
71
72
66
60
55
52
49
45
43
42
42

Pressure (mb)

1018
1018
1017
1018
1018
1017
1017
1017
1016
1016
1015
1015
1015
1014
1014
1014
1013
1013
1013
1012
1012
1012
1011
1011

Ozone (du)

288
288
288
288
286
285
284
282
280
279
279
278
276
274
273
272
271
270
270
270
270
270
269
270

Wednesday 16

Waxing Crescent 29%

14:16

20:49

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
14 Bad
15 Bad
16 Bad

Sun - Rise: 06:41, Set: 19:13, Transit: 12:56. Moon - Rise: 14:16, Set: 20:49. Civil Dark: 19:45 - 06:08. Nautical Dark: 20:24 - 05:30. Astro Dark: 21:05 - 04:49

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
93
86
81
82
81
84
86
89
61

Low Clouds (% Sky Obscured)

55
57
52
44
32
20
29
39
45
39
37
37
28
20
9
35
49
63
56
52
45
38
33
23

Medium Clouds (% Sky Obscured)

57
100
96
100
100
100
100
100
100
100
100
100
100
100
100
79
59
44
12
63
56
70
48
17

High Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
97
94
91
94
97
100
77
60
40
45
45
45
55
68
51

ISS Passover

Visibility (miles)

7
3
2
4
7
7
1
6
3
7
8
9
9
9
9
9
9
9
9
6
9
9
8
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
None
Light Rain
Light Rain
Light Rain
Light Rain
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

95
95
95
82
61
95
95
95
87
54
35
28
22
13
3
5
3
4
21
23
20
20
5
2

Precipitation Amount (mm)

1.1
1.2
0.9
0.5
0
1.1
1
0.8
0.5
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

60
78
85
89
90
90
92
92
93
95
92
89
83
82
83
83
80
74
65
61
60
56
53
50

Pressure (mb)

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

Ozone (du)

271
270
272
273
274
273
272
273
275
277
277
277
277
277
283
285
289
291
293
295
297
301
305
311

Thursday 17

Waxing Crescent 39%

15:16

21:25

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

Sun - Rise: 06:42, Set: 19:11, Transit: 12:55. Moon - Rise: 15:16, Set: 21:25. Civil Dark: 19:43 - 06:10. Nautical Dark: 20:22 - 05:31. Astro Dark: 21:02 - 04:51

Total Clouds (% Sky Obscured)

69
66
52
48
49
44
59
64
83
84
93
100
100
100
100
100
100
100
100
100
100
97
95
92

Low Clouds (% Sky Obscured)

19
13
10
10
10
3
1
3
10
18
25
32
30
31
31
19
36
52
43
35
23
26
29
35

Medium Clouds (% Sky Obscured)

17
16
13
10
8
4
16
30
42
50
59
64
70
71
97
76
85
93
88
82
76
80
81
83

High Clouds (% Sky Obscured)

33
18
0
1
4
24
37
28
36
48
81
100
98
97
95
100
100
100
100
100
100
85
73
59

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 (%)

2
1
0
0
0
0
0
0
0
0
0
0
11
19
28
8
12
14
18
15
11
13
15
10

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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

7
8
7
6
6
6
6
6
6
5
5
6
6
7
8
8
7
7
6
7
8
9
10
10

Relative Humidity (%)

47
53
55
55
58
60
62
67
66
62
63
67
70
72
73
70
62
56
50
54
57
61
64
67

Pressure (mb)

1014
1014
1014
1014
1014
1014
1014
1014
1013
1013
1013
1013
1012
1012
1013
1013
1012
1012
1012
1012
1012
1012
1012
1012

Ozone (du)

319
310
299
295
293
290
291
290
290
291
290
289
290
290
290
290
290
291
291
291
292
292
292
291

Friday 18

First Quarter 49%

16:04

22:11

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 Bad
06 Bad
07 Bad
08 Bad
09 Bad
10 Bad
11 Bad
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad

Sun - Rise: 06:44, Set: 19:08, Transit: 12:55. Moon - Rise: 16:04, Set: 22:11. Civil Dark: 19:41 - 06:12. Nautical Dark: 20:19 - 05:33. Astro Dark: 21:00 - 04:53

Total Clouds (% Sky Obscured)

86
81
75
69
61
53
68
82
96
75
55
35
50
63
78
84
91
97
93
87
82
89
94
99

Low Clouds (% Sky Obscured)

33
31
28
20
12
7
8
8
9
13
15
20
25
29
33
23
13
4
6
11
13
27
40
54

Medium Clouds (% Sky Obscured)

74
64
55
44
33
22
28
35
41
28
15
3
10
16
22
30
37
41
52
57
58
56
54
51

High Clouds (% Sky Obscured)

53
42
33
13
4
0
30
60
80
45
18
4
17
31
44
51
50
43
39
39
52
55
53
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 (%)

13
12
1
1
1
0
1
5
1
1
1
0
1
1
0
0
0
0
1
2
1
1
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
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

13
13
12
12
10
10
10
10
10
11
8
9
9
9
9
9
11
12
12
13
13
14
18
17

Dew Point (°C)

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

Relative Humidity (%)

71
75
78
82
80
77
75
80
83
87
88
88
90
87
83
80
70
61
55
51
49
47
48
48

Pressure (mb)

1012
1013
1013
1014
1015
1015
1015
1016
1016
1016
1017
1017
1017
1018
1018
1018
1019
1019
1019
1019
1018
1018
1018
1018

Ozone (du)

291
294
296
299
298
297
296
296
297
297
294
291
288
289
289
290
288
287
285
286
287
289
289
289

Saturday 19

Waxing Gibbous 58%

16:41

23:09

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: 06:45, Set: 19:06, Transit: 12:55. Moon - Rise: 16:41, Set: 23:09. Civil Dark: 19:39 - 06:13. Nautical Dark: 20:17 - 05:35. Astro Dark: 20:57 - 04:55

Total Clouds (% Sky Obscured)

95
92
88
91
93
96
85
76
69
70
73
73
81
88
93
87
81
74
75
75
75

Low Clouds (% Sky Obscured)

38
21
4
0
0
0
0
0
0
0
4
4
27
49
71
72
73
73
50
28
8

Medium Clouds (% Sky Obscured)

41
31
19
29
39
49
47
45
44
54
65
73
78
79
79
60
41
25
22
19
16

High Clouds (% Sky Obscured)

50
54
57
69
76
82
63
43
24
24
19
23
24
22
21
16
10
3
23
45
66

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 (%)

0
0
0
0
0
0
7
10
11
22
25
25
20
14
4
17
21
21
21
20
20

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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

9
8
8
8
8
7
7
7
7
7
8
8
9
10
10
11
12
12
13
13
12

Relative Humidity (%)

48
50
51
54
55
56
56
57
59
59
62
65
67
68
69
73
71
71
70
65
62

Pressure (mb)

1018
1019
1019
1020
1020
1020
1021
1021
1021
1021
1021
1021
1021
1021
1021
1021
1022
1022
1022
1022
1022

Ozone (du)

290
289
288
288
285
283
280
278
275
272
271
270
268
268
268
268
270
271
273
275
278

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

Generated: 13/09/26 17:56:28. Forecast: 13/09/26 to 19/09/26. Timezone: UTC+2.00