Clear Outside v1.0 - International Weather Forecasts For Astronomers

Wednesday 17

Waning Crescent 12%

02:22

18:08

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

Sun - Rise: 06:43, Set: 19:08, Transit: 12:56. Moon - Rise: 02:22, Set: 18:08. Civil Dark: 19:40 - 06:11. Nautical Dark: 20:19 - 05:32. Astro Dark: 20:59 - 04:52

Total Clouds (% Sky Obscured)

39
39
35
55
93
99
100
99
98
100
100
93
95
92
71
7
19
16
28
23
15
21
26
17

Low Clouds (% Sky Obscured)

15
6
8
3
20
32
63
87
89
98
87
84
79
69
48
7
19
16
28
23
15
21
26
17

Medium Clouds (% Sky Obscured)

22
28
32
55
61
92
99
85
90
99
100
86
52
28
7
0
0
0
11
11
4
18
22
0

High Clouds (% Sky Obscured)

0
4
4
4
0
9
30
1
1
2
0
0
0
0
0
0
0
0
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
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Type

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

Precipitation Probability (%)

0
0
0
0
9
27
41
56
67
40
25
16
9
4
0
0
0
0
0
0
0
0
0
0

Precipitation Amount (mm)

0
0
0
0
0
0
0
0.4
0.6
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

14
13
13
13
13
13
13
13
13
13
13
14
14
16
17
20
21
22
23
24
24
23
21
20

Feels Like (°C)

11
10
11
11
12
10
11
11
11
10
11
11
11
13
14
17
20
21
22
23
23
23
22
21

Dew Point (°C)

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

Relative Humidity (%)

57
61
66
71
75
71
69
72
70
70
68
65
66
64
61
53
47
44
42
42
44
51
60
64

Pressure (mb)

1023
1023
1023
1024
1024
1024
1024
1023
1023
1023
1023
1023
1024
1024
1024
1023
1023
1023
1022
1022
1022
1022
1023
1024

Ozone (du)

254
255
255
257
258
258
258
259
256
254
253
254
253
253
254
252
251
249
249
248
248
248
248
247

Thursday 18

Waning Crescent 6%

03:42

18:24

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

Sun - Rise: 06:45, Set: 19:06, Transit: 12:55. Moon - Rise: 03:42, Set: 18:24. Civil Dark: 19:38 - 06:12. Nautical Dark: 20:17 - 05:34. Astro Dark: 20:57 - 04:54

Total Clouds (% Sky Obscured)

17
1
0
0
0
2
3
4
5
32
32
28
4
3
0
2
8
6
4
4
3
5
13
4

Low Clouds (% Sky Obscured)

17
1
0
0
0
0
0
0
0
0
0
0
0
0
0
2
8
5
2
0
0
0
0
0

Medium Clouds (% Sky Obscured)

5
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

0
0
0
0
0
2
3
3
3
26
30
25
4
3
0
0
0
4
4
4
3
4
13
4

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)

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

Chance of Frost

Temperature (°C)

19
18
18
17
16
16
15
15
14
14
14
15
17
19
20
22
24
25
26
26
25
25
22
20

Feels Like (°C)

19
19
19
17
17
17
16
16
15
15
13
15
16
20
21
23
24
26
27
27
27
27
23
21

Dew Point (°C)

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

Relative Humidity (%)

68
69
70
71
73
74
77
76
78
80
79
74
64
55
49
43
39
36
34
34
35
43
48
52

Pressure (mb)

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

Ozone (du)

246
245
245
245
244
244
243
243
244
245
245
247
248
248
248
248
247
247
247
246
247
248
249
250

Friday 19

Waning Crescent 2%

04:58

18:37

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

Sun - Rise: 06:46, Set: 19:04, Transit: 12:55. Moon - Rise: 04:58, Set: 18:37. Civil Dark: 19:36 - 06:14. Nautical Dark: 20:14 - 05:36. Astro Dark: 20:54 - 04:56

Total Clouds (% Sky Obscured)

7
5
57
19
0
0
0
6
15
14
4
0
4
3
9
26
34
39
100
90
33
28
39
19

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
6
15
14
4
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
0
0
0
0
0
9
24
34
39
50
55
33
28
22
15

High Clouds (% Sky Obscured)

3
4
57
19
0
0
0
0
0
0
0
0
4
3
1
10
28
37
100
87
27
19
21
6

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
4
4
4
4
3
3
3
4
4
3
3
4
4
4
4
4
4
5
5
4
4
4

Chance of Frost

Temperature (°C)

19
17
17
16
15
15
14
14
13
13
12
13
16
19
21
23
25
26
26
26
26
25
22
21

Feels Like (°C)

19
18
17
15
16
16
16
15
15
14
14
15
18
20
22
25
26
27
27
25
26
26
24
22

Dew Point (°C)

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

Relative Humidity (%)

54
56
59
62
66
69
71
74
77
80
81
79
71
62
53
45
39
35
35
35
39
46
53
59

Pressure (mb)

1025
1024
1024
1024
1024
1023
1023
1022
1022
1022
1022
1022
1021
1021
1020
1020
1019
1018
1018
1017
1016
1016
1016
1016

Ozone (du)

249
249
249
248
249
248
248
248
248
249
249
249
251
253
252
252
251
250
249
249
250
250
251
252

Saturday 20

Waning Crescent 0%

06:12

18:48

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

Sun - Rise: 06:48, Set: 19:02, Transit: 12:55. Moon - Rise: 06:12, Set: 18:48. Civil Dark: 19:34 - 06:15. Nautical Dark: 20:12 - 05:37. Astro Dark: 20:52 - 04:58

Total Clouds (% Sky Obscured)

14
6
12
30
60
52
77
38
42
50
55
53
51
45
38
27
17
33
51
67
73
74
70
70

Low Clouds (% Sky Obscured)

0
0
5
10
15
22
27
33
30
29
31
22
11
0
0
0
0
11
23
32
38
44
46
50

Medium Clouds (% Sky Obscured)

9
2
6
11
17
18
18
21
28
38
48
48
49
45
36
27
17
31
46
60
60
51
43
40

High Clouds (% Sky Obscured)

6
2
3
15
41
30
51
10
17
29
39
27
16
2
2
0
0
7
14
19
45
64
70
70

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
3
7
10
25
28
19
33

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

Chance of Frost

Temperature (°C)

20
19
18
18
17
17
16
16
15
15
15
16
18
20
21
23
25
26
27
27
26
24
21
19

Feels Like (°C)

21
21
20
20
19
18
17
16
17
17
17
18
20
22
24
26
27
28
28
28
28
26
23
21

Dew Point (°C)

13
13
13
13
13
13
13
13
12
12
12
12
12
12
12
12
12
12
11
12
12
12
12
11

Relative Humidity (%)

66
69
70
73
76
78
79
82
82
83
84
79
70
61
54
49
44
40
38
39
40
47
56
60

Pressure (mb)

1016
1016
1016
1016
1016
1015
1015
1015
1015
1014
1015
1015
1014
1014
1014
1014
1013
1013
1012
1012
1012
1012
1013
1013

Ozone (du)

252
252
252
252
252
252
253
253
253
253
253
253
254
254
255
255
254
254
253
253
253
252
251
251

Sunday 21

New Moon 0%

07:23

19:00

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

Sun - Rise: 06:49, Set: 18:59, Transit: 12:54. Moon - Rise: 07:23, Set: 19:00. Civil Dark: 19:32 - 06:17. Nautical Dark: 20:10 - 05:39. Astro Dark: 20:49 - 04:59

Total Clouds (% Sky Obscured)

65
60
55
88
57
54
51
45
40
40
45
40
36
41
41
40
39
46
53
57
68
78
89
91

Low Clouds (% Sky Obscured)

50
46
45
48
51
50
50
45
40
40
45
35
35
35
35
40
39
45
46
51
66
76
89
78

Medium Clouds (% Sky Obscured)

38
35
51
62
57
54
49
45
40
35
39
25
20
14
13
10
9
11
10
11
13
16
18
35

High Clouds (% Sky Obscured)

65
60
55
88
57
54
51
45
37
22
10
4
5
7
5
4
3
5
7
8
6
3
1
4

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

Precipitation Probability (%)

26
9
20
25
26
45
58
68
70
60
45
8
8
0
2
2
0
1
1
0
3
4
3
14

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

20
18
18
18
16
16
16
16
16
16
16
17
18
18
18
18
18
18
25
24
23
23
24
24

Dew Point (°C)

10
9
9
10
10
10
11
11
12
13
13
13
14
12
12
11
10
10
10
10
9
9
10
10

Relative Humidity (%)

62
62
64
67
69
72
76
80
86
89
90
87
77
68
59
55
50
46
45
46
45
48
51
55

Pressure (mb)

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

Ozone (du)

250
250
250
249
249
250
250
251
251
252
254
254
256
257
258
259
259
260
261
261
262
262
262
262

Monday 22

Waxing Crescent 3%

08:34

19:12

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
17 Bad
18 Bad
19 Bad
20 Bad

Sun - Rise: 06:51, Set: 18:57, Transit: 12:54. Moon - Rise: 08:34, Set: 19:12. Civil Dark: 19:29 - 06:18. Nautical Dark: 20:07 - 05:40. Astro Dark: 20:47 - 05:01

Total Clouds (% Sky Obscured)

93
94
94
95
95
96
96
97
97
97
97
96
96
95
93
90
87
90
93
97
98
99
100
100

Low Clouds (% Sky Obscured)

66
54
57
60
63
68
72
77
68
61
54
67
75
83
73
60
50
46
42
42
42
44
46
57

Medium Clouds (% Sky Obscured)

51
68
77
87
95
89
83
75
54
36
33
35
38
42
46
49
49
45
41
37
41
47
56
53

High Clouds (% Sky Obscured)

5
7
8
9
10
29
42
54
40
29
14
25
35
46
45
43
42
58
74
90
94
97
99
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
8
8

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

Precipitation Probability (%)

22
31
60
69
69
60
48
27
21
14
2
2
3
0
5
6
3
4
5
3
19
25
28
32

Precipitation Amount (mm)

0
0
0.2
0.3
0.2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

63
70
79
83
88
92
90
90
90
90
89
89
83
79
75
73
72
69
70
72
74
77
81
86

Pressure (mb)

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

Ozone (du)

261
261
260
261
262
262
264
265
267
269
270
271
271
272
272
272
272
272
272
272
272
273
275
277

Tuesday 23

Waxing Crescent 7%

09:45

19:26

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: 06:52, Set: 18:55, Transit: 12:54. Moon - Rise: 09:45, Set: 19:26. Civil Dark: 19:27 - 06:20. Nautical Dark: 20:05 - 05:42. Astro Dark: 20:44 - 05:03

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
100
100
100
100
96
91
86

Low Clouds (% Sky Obscured)

67
69
73
70
71
67
63
59
56
60
64
63
65
68
63
60
53

Medium Clouds (% Sky Obscured)

54
52
55
61
62
54
46
38
46
54
62
66
79
98
85
72
59

High Clouds (% Sky Obscured)

90
81
87
93
99
93
86
90
95
100
100
100
100
100
81
63
44

ISS Passover

Visibility (miles)

8
8
9
9
9
9
9
9
9
9
9
9
9
9
9
8
6

Fog (%)

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

Precipitation Probability (%)

35
37
37
36
33
29
23
11
11
8
4
7
6
2
19
28
34

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

16
15
14
14
14
14
14
14
13
13
13
14
14
15
15
17
18

Feels Like (°C)

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

Dew Point (°C)

13
14
13
12
12
11
11
11
10
10
10
11
11
11
12
12
13

Relative Humidity (%)

86
89
89
87
84
84
83
83
83
82
82
82
80
79
78
74
72

Pressure (mb)

1016
1017
1017
1017
1017
1017
1017
1017
1017
1017
1018
1018
1018
1018
1018
1017
1017

Ozone (du)

277
277
278
278
277
277
278
279
280
281
283
284
285
285
286
287
287

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

Generated: 17/09/25 20:54:12. Forecast: 17/09/25 to 23/09/25. Timezone: UTC+2.00