Clear Outside v1.0 - International Weather Forecasts For Astronomers

Saturday 8

Waning Gibbous 82%

18:15

12:13

13 OK
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 Bad
08 Bad
09 Bad
10 Bad
11 Bad
12 Bad

Sun - Rise: 07:06, Set: 16:26, Transit: 11:45. Moon - Rise: 18:15, Set: 12:13. Civil Dark: 17:01 - 06:31. Nautical Dark: 17:40 - 05:52. Astro Dark: 18:18 - 05:14

Total Clouds (% Sky Obscured)

37
39
47
90
83
100
100
100
100
100
100
100
100
100
100
100
100
99
98
97
96
97
97
97

Low Clouds (% Sky Obscured)

37
39
47
55
57
59
70
78
82
86
89
93
90
92
91
95
96
94
88
87
85
86
81
83

Medium Clouds (% Sky Obscured)

0
0
1
20
36
45
58
64
100
100
100
100
100
96
77
79
78
85
61
48
50
57
55
60

High Clouds (% Sky Obscured)

4
4
42
69
53
100
100
100
100
62
66
66
66
76
44
49
78
85
84
67
65
69
39
31

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
5
2
3
6
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
Light Rain
Light Rain
Light Rain
Light Rain
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

0
0
0
0
0
2
10
37
73
89
89
78
62
48
45
43
38
36
43
42
34
32
29
27

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0.5
0.8
0.8
0.5
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

11
11
11
10
9
8
8
7
7
7
7
7
7
6
6
6
6
6
6
6
6
6
6
7

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

59
57
63
72
77
81
82
84
85
87
91
93
94
94
93
91
90
86
83
81
81
79
79
78

Pressure (mb)

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

Ozone (du)

266
266
265
268
269
270
269
270
271
272
273
274
274
273
273
272
273
272
271
272
272
272
272
272

Sunday 9

Waning Gibbous 72%

19:32

12:52

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: 07:08, Set: 16:25, Transit: 11:45. Moon - Rise: 19:32, Set: 12:52. Civil Dark: 17:00 - 06:33. Nautical Dark: 17:39 - 05:54. Astro Dark: 18:16 - 05:16

Total Clouds (% Sky Obscured)

100
100
100
100
100
99
100
99
98
98
99
98
100
98
100
100
98
100
100
99
99
98
98
95

Low Clouds (% Sky Obscured)

82
84
80
80
78
79
77
75
75
72
77
89
87
91
93
94
89
91
93
94
96
94
94
89

Medium Clouds (% Sky Obscured)

61
69
75
66
65
91
92
86
90
91
95
86
100
87
53
58
94
100
99
96
94
95
91
80

High Clouds (% Sky Obscured)

42
63
76
84
73
83
97
58
65
70
70
70
70
70
23
76
85
80
75
70
75
75
75
76

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 (%)

23
21
24
23
23
24
24
22
29
23
19
9
12
22
28
28
35
36
41
42
34
31
25
28

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
4
3
4
3
3
3
3
3
3
3
3
2
3
3
3
3
3
2
3
3
3
4
3

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
5
5
5
5
5
5
5
5
6

Relative Humidity (%)

75
74
75
77
79
82
84
85
86
88
90
88
88
90
90
90
88
88
90
90
87
87
81
81

Pressure (mb)

1017
1017
1017
1017
1017
1017
1017
1017
1017
1017
1017
1017
1017
1017
1016
1016
1016
1016
1016
1016
1017
1017
1017
1016

Ozone (du)

271
270
271
270
269
268
267
265
264
266
265
264
262
262
265
266
269
273
276
278
277
278
279
278

Monday 10

Waning Gibbous 61%

20:55

No Set

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: 07:09, Set: 16:23, Transit: 11:46. Moon - Rise: 20:55, Set: No Set. Civil Dark: 16:58 - 06:34. Nautical Dark: 17:37 - 05:55. Astro Dark: 18:15 - 05:17

Total Clouds (% Sky Obscured)

96
98
99
94
93
96
97
98
97
96
100
100
100
97
64
53
51
58
76
95
100
100
100
100

Low Clouds (% Sky Obscured)

84
91
82
84
88
84
86
91
92
89
100
100
100
97
63
52
51
57
56
54
78
93
96
96

Medium Clouds (% Sky Obscured)

77
75
62
44
52
52
50
50
43
27
14
12
13
1
0
0
0
13
27
41
88
100
100
100

High Clouds (% Sky Obscured)

88
92
70
38
27
4
4
4
9
5
11
8
10
5
5
4
10
45
72
95
100
100
100
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
Very Light Rain
Light Rain

Precipitation Probability (%)

20
11
5
1
2
1
1
0
0
0
0
1
0
0
0
0
0
1
16
27
35
51
60
84

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
0.2
0.7

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

73
73
76
78
82
82
82
82
82
82
82
82
82
81
82
85
86
88
88
86
82
78
78
77

Pressure (mb)

1016
1015
1015
1015
1015
1016
1016
1016
1016
1016
1016
1016
1016
1016
1015
1015
1016
1016
1016
1016
1016
1016
1016
1016

Ozone (du)

277
276
275
271
268
266
263
260
261
262
263
265
268
265
260
263
265
263
263
263
264
265
268
271

Tuesday 11

Waning Gibbous 50%

22:17

13:18

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: 07:11, Set: 16:22, Transit: 11:46. Moon - Rise: 22:17, Set: 13:18. Civil Dark: 16:57 - 06:36. Nautical Dark: 17:36 - 05:56. Astro Dark: 18:14 - 05:18

Total Clouds (% Sky Obscured)

93
85
78
82
86
90
91
92
93
87
78
71
77
88
100
87
79
75
74
74
81
89
95
97

Low Clouds (% Sky Obscured)

84
73
62
68
74
82
79
76
75
72
70
66
76
88
100
84
72
67
62
62
67
66
65
67

Medium Clouds (% Sky Obscured)

84
67
46
12
11
10
18
27
44
35
20
3
2
1
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

72
43
11
4
4
2
1
1
0
0
0
0
0
0
1
1
3
1
1
1
2
2
8
10

ISS Passover

Visibility (miles)

5
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
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 (%)

70
46
21
14
10
2
4
3
1
3
3
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Amount (mm)

0.4
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
4
3
3
4
3
3
3
2
2
2
2
1
1
2
1
1
2
3
3
4
4

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

88
88
84
84
85
85
86
88
88
88
88
88
88
88
88
86
89
91
91
91
85
78
71
65

Pressure (mb)

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

Ozone (du)

273
273
272
269
267
267
268
272
279
288
299
302
292
287
287
288
293
294
295
290
288
284
282
279

Wednesday 12

Third Quarter 40%

23:36

13:38

13 Bad
14 Bad
15 Bad
16 Bad
17 OK
18 OK
19 OK
20 OK
21 OK
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: 07:13, Set: 16:20, Transit: 11:46. Moon - Rise: 23:36, Set: 13:38. Civil Dark: 16:56 - 06:37. Nautical Dark: 17:35 - 05:58. Astro Dark: 18:13 - 05:20

Total Clouds (% Sky Obscured)

96
90
89
61
47
47
42
42
42
43
47
47
63
77
94
83
72
61
73
84
94
90
83
76

Low Clouds (% Sky Obscured)

72
67
67
61
47
47
42
42
42
43
47
47
49
39
34
27
26
24
29
33
39
32
26
22

Medium 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
0
0

High Clouds (% Sky Obscured)

15
12
12
11
19
28
19
9
0
4
8
8
29
51
71
56
43
31
30
27
16
18
24
41

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
4
4
4
4
4
4
4
4
3
3
3
4
4
4
3
3
3
3
3
4
4
4
4

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

1
0
1
3
3
4
4
4
4
4
4
4
4
4
3
3
3
3
2
3
3
3
3
3

Relative Humidity (%)

62
60
64
71
76
79
82
85
86
88
88
91
93
93
93
93
91
91
89
85
81
75
70
64

Pressure (mb)

1020
1020
1020
1020
1020
1020
1020
1020
1020
1020
1020
1020
1020
1020
1020
1019
1020
1020
1020
1020
1020
1020
1020
1019

Ozone (du)

275
271
266
264
265
266
265
265
266
265
264
264
265
265
265
264
265
265
265
266
267
268
268
269

Thursday 13

Waning Crescent 30%

00:51

13:52

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: 07:14, Set: 16:19, Transit: 11:46. Moon - Rise: 00:51, Set: 13:52. Civil Dark: 16:54 - 06:39. Nautical Dark: 17:34 - 05:59. Astro Dark: 18:12 - 05:21

Total Clouds (% Sky Obscured)

78
88
94
95
97
99
97
94
91
78
68
57
61
67
64
57
50
46
42
49
52
52
60
62

Low Clouds (% Sky Obscured)

15
7
0
1
3
4
6
8
11
19
26
30
26
24
21
17
14
11
9
5
0
0
0
0

Medium Clouds (% Sky Obscured)

2
3
7
3
2
0
1
3
4
2
1
0
0
1
1
3
5
7
8
4
0
5
13
19

High Clouds (% Sky Obscured)

57
73
88
90
92
93
81
69
57
44
30
19
41
67
64
57
50
46
42
49
52
52
41
38

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

4
8
7
7
7
6
6
3
3
3
2
3
2
1
1
1
2
2
2
2
3
2
3
4

Dew Point (°C)

3
3
3
4
4
4
3
3
3
3
2
3
2
2
2
2
2
2
2
2
2
3
4
4

Relative Humidity (%)

60
63
67
72
75
78
82
85
85
88
88
91
91
91
91
91
91
93
93
88
82
78
74
69

Pressure (mb)

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

Ozone (du)

270
270
270
270
270
271
271
272
272
272
272
272
272
272
272
272
272
273
273
273
273
273
274
274

Friday 14

Waning Crescent 21%

02:02

14:05

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

Sun - Rise: 07:16, Set: 16:18, Transit: 11:46. Moon - Rise: 02:02, Set: 14:05. Civil Dark: 16:53 - 06:40. Nautical Dark: 17:33 - 06:01. Astro Dark: 18:11 - 05:22

Total Clouds (% Sky Obscured)

75
87
100
89
78
67
77
87
97
96
95
93
89
85
80
89
97
100

Low Clouds (% Sky Obscured)

0
0
0
5
12
19
19
20
23
21
20
18
18
21
27
33
38
46

Medium Clouds (% Sky Obscured)

19
18
20
18
17
16
22
30
36
40
44
47
52
56
63
73
83
93

High Clouds (% Sky Obscured)

57
78
100
73
43
5
22
39
55
62
68
76
83
85
80
89
97
99

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
3
4
4

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)

9
8
7
6
5
4
3
2
2
2
2
2
3
1
2
4
3
3

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

66
69
74
78
81
84
84
85
86
88
90
90
93
91
91
93
88
85

Pressure (mb)

1012
1012
1012
1011
1011
1011
1011
1011
1011
1011
1011
1011
1011
1011
1011
1011
1011
1012

Ozone (du)

275
274
274
274
276
279
281
282
284
285
287
289
291
290
288
287
289
290

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

Generated: 08/11/25 13:27:17. Forecast: 08/11/25 to 14/11/25. Timezone: UTC+1.00