Clear Outside v1.0 - International Weather Forecasts For Astronomers

Saturday 8

Waning Gibbous 82%

18:15

11:16

04 Good
05 OK
06 OK
07 OK
08 OK
09 OK
10 OK
11 OK
12 OK
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

Sun - Rise: 07:04, Set: 16:26, Transit: 11:45. Moon - Rise: 18:15, Set: 11:16. Civil Dark: 17:01 - 06:30. Nautical Dark: 17:40 - 05:51. Astro Dark: 18:18 - 05:13

Total Clouds (% Sky Obscured)

8
12
15
28
29
32
24
28
37
37
39
46
79
97
100
100
100
99
98
96
96
95
98
98

Low Clouds (% Sky Obscured)

8
12
15
28
29
32
24
28
37
37
39
46
66
68
66
73
71
80
83
87
87
86
94
96

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
25
57
77
55
82
97
93
88
88
86
90
89

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
3
4
40
86
100
91
65
65
70
70
65
65
65
65

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
3
2
6
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

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

Precipitation Probability (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
3
13
45
58
59
93
95
93
76
66
59

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.2
0
0.7
1.1
0.6
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

2
2
3
3
3
5
6
8
9
10
11
12
10
8
6
6
6
6
5
6
6
5
5
4

Dew Point (°C)

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

Relative Humidity (%)

91
93
91
91
91
82
74
69
63
59
57
62
72
77
79
81
84
84
85
90
94
94
94
93

Pressure (mb)

1015
1015
1015
1015
1016
1016
1016
1015
1015
1014
1014
1014
1014
1014
1015
1015
1015
1016
1016
1016
1016
1016
1016
1016

Ozone (du)

265
266
264
268
267
266
267
269
269
268
269
267
268
268
269
269
270
271
273
274
274
273
272
271

Sunday 9

Waning Gibbous 79%

19:32

12:13

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
21 Bad
22 Bad
23 Bad
00 Bad
01 Bad
02 Bad
03 Bad

Sun - Rise: 07:06, Set: 16:25, Transit: 11:45. Moon - Rise: 19:32, Set: 12:13. Civil Dark: 17:00 - 06:31. Nautical Dark: 17:39 - 05:52. Astro Dark: 18:16 - 05:14

Total Clouds (% Sky Obscured)

98
97
98
100
100
100
100
99
99
100
98
98
98
100
100
100
99
99
100
96
97
99
100
99

Low Clouds (% Sky Obscured)

92
93
96
100
100
100
100
97
95
95
95
95
92
92
90
78
79
72
65
48
56
76
87
86

Medium Clouds (% Sky Obscured)

91
61
83
91
93
95
75
55
57
58
49
49
45
54
52
53
55
48
56
60
70
97
98
98

High Clouds (% Sky Obscured)

62
3
34
70
75
75
46
21
15
7
8
9
4
2
1
1
4
18
68
61
80
75
96
77

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

Very 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 (%)

56
45
42
42
43
43
42
37
29
20
21
15
10
7
5
5
4
3
4
19
31
21
33
46

Precipitation Amount (mm)

0.2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.2

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

6
6
6
6
6
6
6
7
7
7
8
7
7
7
7
7
7
6
6
6
6
6
6
6

Feels Like (°C)

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

Dew Point (°C)

5
5
4
4
4
4
4
4
4
4
4
4
4
4
4
4
5
4
4
5
5
5
5
5

Relative Humidity (%)

91
91
88
86
86
86
85
84
81
78
78
78
79
79
82
84
87
87
87
88
88
93
91
93

Pressure (mb)

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

Ozone (du)

271
272
271
269
269
269
270
270
270
270
270
270
270
269
268
267
266
266
266
268
268
268
268
266

Monday 10

Waning Gibbous 72%

20:55

12:52

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
21 Bad
22 Bad
23 Bad
00 Bad
01 Bad
02 Bad
03 Bad

Sun - Rise: 07:08, Set: 16:23, Transit: 11:45. Moon - Rise: 20:55, Set: 12:52. Civil Dark: 16:58 - 06:33. Nautical Dark: 17:37 - 05:54. Astro Dark: 18:15 - 05:16

Total Clouds (% Sky Obscured)

98
98
97
99
100
100
100
99
97
97
88
85
90
95
97
98
95
95
96
96
97
98
92
93

Low Clouds (% Sky Obscured)

87
89
87
80
78
79
88
92
91
80
67
75
83
78
81
88
87
89
92
93
94
96
92
92

Medium Clouds (% Sky Obscured)

95
95
92
92
91
87
83
58
33
34
29
21
18
30
33
40
25
18
17
21
24
17
9
4

High Clouds (% Sky Obscured)

75
73
76
92
98
93
20
30
79
91
68
76
71
17
4
4
9
5
4
4
3
3
2
9

ISS Passover

Visibility (miles)

8
8
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 (%)

43
33
46
35
27
33
26
18
12
7
9
4
7
2
8
0
0
1
0
0
7
3
3
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

94
94
91
90
88
85
81
81
80
78
77
78
80
79
81
81
82
82
82
82
82
82
81
83

Pressure (mb)

1016
1016
1016
1016
1017
1017
1017
1017
1016
1016
1016
1015
1015
1016
1016
1016
1016
1016
1016
1016
1016
1016
1016
1016

Ozone (du)

266
267
269
271
273
275
275
275
275
275
275
273
270
268
265
263
260
259
258
259
261
263
259
257

Tuesday 11

Waning Gibbous 61%

22:17

13:18

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
21 Bad
22 Bad
23 Bad
00 Bad
01 Bad
02 Bad
03 Bad

Sun - Rise: 07:09, Set: 16:22, Transit: 11:46. Moon - Rise: 22:17, Set: 13:18. Civil Dark: 16:57 - 06:34. Nautical Dark: 17:36 - 05:55. Astro Dark: 18:14 - 05:17

Total Clouds (% Sky Obscured)

94
53
54
85
53
51
64
85
100
100
100
100
99
97
95
94
93
92
92
92
93
95
97
95

Low Clouds (% Sky Obscured)

90
53
54
59
52
45
45
47
70
82
84
87
86
87
86
86
88
89
86
84
83
89
95
93

Medium Clouds (% Sky Obscured)

3
1
0
19
39
51
54
82
100
100
100
68
66
62
63
61
59
57
51
51
48
34
21
6

High Clouds (% Sky Obscured)

22
15
20
47
53
51
64
85
84
52
26
7
8
8
7
6
3
0
0
0
0
0
0
0

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
8
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
Very Light Rain
Very Light Rain
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

1
0
0
0
0
1
10
18
35
47
52
54
43
32
11
7
4
1
3
2
0
1
1
0

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0.2
0.2
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

83
86
86
88
85
78
74
69
70
77
87
87
87
87
85
85
85
85
86
86
86
86
86
86

Pressure (mb)

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

Ozone (du)

260
261
260
261
261
261
264
265
267
268
268
268
271
274
278
282
289
294
299
301
295
289
288
289

Wednesday 12

Third Quarter 50%

23:36

13:38

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

Sun - Rise: 07:11, Set: 16:20, Transit: 11:46. Moon - Rise: 23:36, Set: 13:38. Civil Dark: 16:56 - 06:36. Nautical Dark: 17:35 - 05:56. Astro Dark: 18:13 - 05:18

Total Clouds (% Sky Obscured)

94
91
75
77
72
68
63
57
97
84
84
47
39
40
83
77
72
71
73
74
74
78
81
77

Low Clouds (% Sky Obscured)

89
83
74
75
70
68
63
57
52
51
50
47
39
36
32
15
16
19
20
22
24
25
26
28

Medium Clouds (% Sky Obscured)

4
2
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
1
1
1
1
2
15
11
11
2
1
3
49
74
72
71
73
74
74
78
69
65

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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

3
3
3
3
4
4
5
6
7
6
7
7
8
8
7
5
5
4
4
4
3
3
1
1

Dew Point (°C)

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

Relative Humidity (%)

86
89
91
91
91
83
75
70
65
62
61
64
70
77
78
81
82
85
86
86
89
91
91
93

Pressure (mb)

1020
1021
1021
1021
1022
1022
1022
1022
1021
1021
1021
1021
1021
1021
1021
1021
1021
1021
1022
1022
1021
1021
1021
1021

Ozone (du)

291
293
294
293
291
287
281
277
272
269
265
264
263
262
262
263
262
262
262
262
262
263
263
264

Thursday 13

Waning Crescent 40%

00:51

13:52

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
21 Bad
22 Bad
23 Bad
00 Bad
01 Bad
02 Bad
03 Bad

Sun - Rise: 07:13, Set: 16:19, Transit: 11:46. Moon - Rise: 00:51, Set: 13:52. Civil Dark: 16:54 - 06:37. Nautical Dark: 17:34 - 05:58. Astro Dark: 18:12 - 05:20

Total Clouds (% Sky Obscured)

71
64
60
72
82
91
90
88
87
84
79
74
69
65
61
70
79
84
66
51
40
55
70
81

Low Clouds (% Sky Obscured)

26
27
28
36
44
47
44
42
36
30
24
17
16
15
13
19
35
45
42
40
35
34
32
28

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)

59
44
20
14
17
28
41
55
70
70
69
69
59
47
35
24
14
3
2
2
1
28
52
73

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)

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

Chance of Frost

Temperature (°C)

3
3
2
2
3
5
6
7
8
10
9
9
9
8
7
6
6
5
4
4
4
4
3
3

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

93
91
91
91
86
82
78
71
67
61
66
69
74
77
79
84
83
86
88
88
89
89
89
91

Pressure (mb)

1021
1021
1021
1021
1022
1022
1022
1021
1021
1021
1020
1020
1020
1020
1020
1020
1020
1021
1021
1021
1021
1021
1020
1020

Ozone (du)

264
264
263
263
263
263
263
264
264
264
264
264
264
264
264
264
265
266
267
267
268
268
269
269

Friday 14

Waning Crescent 30%

02:02

14:05

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 OK
18 OK
19 OK
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad

Sun - Rise: 07:14, Set: 16:18, Transit: 11:46. Moon - Rise: 02:02, Set: 14:05. Civil Dark: 16:53 - 06:39. Nautical Dark: 17:33 - 05:59. Astro Dark: 18:11 - 05:21

Total Clouds (% Sky Obscured)

79
80
68
62
60
67
74
83
90
83
75
67
51
40
28
38
53
71
76
83
92

Low Clouds (% Sky Obscured)

16
7
0
2
4
5
9
13
19
20
18
19
12
6
0
13
28
46
56
68
80

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

High Clouds (% Sky Obscured)

75
74
68
62
39
14
20
22
28
29
25
15
11
4
0
9
18
27
18
9
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

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
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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

3
3
3
2
4
5
6
8
9
11
10
10
9
8
8
7
6
6
5
5
5

Feels Like (°C)

2
2
2
2
1
1
1
2
2
2
7
7
7
6
6
6
3
2
3
2
2

Dew Point (°C)

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

Relative Humidity (%)

89
91
91
93
86
82
78
71
66
61
63
67
69
71
73
76
76
78
79
79
79

Pressure (mb)

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

Ozone (du)

269
268
267
267
267
267
268
268
269
270
270
270
270
271
271
272
273
273
274
274
274

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

Generated: 08/11/25 04:13:04. Forecast: 08/11/25 to 14/11/25. Timezone: UTC+1.00