Clear Outside v1.0 - International Weather Forecasts For Astronomers

Monday 5

Waning Crescent 31%

01:43

16:33

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

Sun - Rise: 07:08, Set: 18:31, Transit: 12:50. Moon - Rise: 01:43, Set: 16:33. Civil Dark: 19:03 - 06:36. Nautical Dark: 19:41 - 05:59. Astro Dark: 20:19 - 05:21

Total Clouds (% Sky Obscured)

71
78
83
69
85
62
53
33
17
13
21
30
16
1
11
5
9
10
12
21
6
6
8
51

Low Clouds (% Sky Obscured)

18
20
38
49
52
56
53
33
17
13
21
30
16
0
2
0
0
0
0
0
0
0
0
39

Medium Clouds (% Sky Obscured)

0
0
2
0
4
5
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

71
78
46
28
32
15
3
3
2
0
0
0
3
1
11
5
8
8
9
18
3
2
4
23

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
13
99
31
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)

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

Chance of Frost

Temperature (°C)

10
10
10
10
9
9
10
11
13
16
17
19
20
20
21
20
19
16
15
14
13
12
11
10

Feels Like (°C)

9
9
9
10
10
8
10
12
15
17
19
20
21
22
22
22
19
16
15
14
13
13
13
12

Dew Point (°C)

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

Relative Humidity (%)

78
80
81
84
85
84
81
72
64
57
52
48
45
43
41
42
51
57
59
61
63
64
67
69

Pressure (mb)

1027
1027
1027
1027
1027
1027
1027
1027
1027
1027
1026
1026
1025
1024
1023
1023
1023
1023
1023
1024
1024
1024
1024
1023

Ozone (du)

294
295
297
300
301
302
300
300
298
295
292
289
287
287
287
286
284
284
283
281
278
277
276
275

Tuesday 6

Waning Crescent 21%

No Rise

16:53

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

Sun - Rise: 07:10, Set: 18:29, Transit: 12:49. Moon - Rise: No Rise, Set: 16:53. Civil Dark: 19:01 - 06:38. Nautical Dark: 19:39 - 06:00. Astro Dark: 20:17 - 05:22

Total Clouds (% Sky Obscured)

44
36
56
44
52
61
56
40
3
2
2
1
2
0
1
0
3
0
0
0
10
9
0
0

Low Clouds (% Sky Obscured)

44
36
51
44
52
61
56
40
0
0
0
0
0
0
0
0
0
0
0
0
10
9
0
0

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)

9
2
22
5
12
4
4
4
2
2
2
1
2
0
1
0
3
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
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)

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

Chance of Frost

Temperature (°C)

9
8
8
8
8
8
8
9
12
14
17
19
20
21
21
21
19
17
16
14
14
13
12
12

Feels Like (°C)

9
9
10
8
9
8
8
10
12
15
17
20
21
22
22
21
19
16
16
14
14
13
13
12

Dew Point (°C)

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

Relative Humidity (%)

70
71
73
74
74
75
71
60
52
45
41
38
37
36
37
39
46
50
53
54
57
59
63
67

Pressure (mb)

1023
1023
1023
1023
1023
1023
1023
1023
1023
1023
1022
1021
1020
1019
1019
1019
1019
1019
1019
1019
1019
1019
1019
1018

Ozone (du)

274
273
273
273
273
273
272
272
272
272
272
273
274
275
277
277
277
277
278
279
280
281
281
283

Wednesday 7

Waning Crescent 12%

03:06

17:09

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

Sun - Rise: 07:12, Set: 18:27, Transit: 12:49. Moon - Rise: 03:06, Set: 17:09. Civil Dark: 18:59 - 06:39. Nautical Dark: 19:37 - 06:02. Astro Dark: 20:14 - 05:24

Total Clouds (% Sky Obscured)

0
2
33
45
45
45
78
97
58
26
12
30
57
59
31
16
3
2
0
1
1
48
80
100

Low Clouds (% Sky Obscured)

0
0
0
0
0
7
0
0
1
1
0
1
0
0
0
0
0
0
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

0
0
28
37
28
45
78
97
58
26
12
2
3
4
2
2
0
0
0
0
0
9
19
25

High Clouds (% Sky Obscured)

0
1
8
30
35
40
7
32
32
2
3
30
57
59
31
12
1
2
0
1
1
44
76
99

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

Chance of Frost

Temperature (°C)

11
10
10
9
9
8
8
10
12
15
17
18
19
20
20
20
18
16
15
14
13
12
11
10

Feels Like (°C)

11
11
10
8
7
6
7
7
9
11
13
16
16
17
18
18
18
16
16
15
14
13
10
8

Dew Point (°C)

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

Relative Humidity (%)

71
73
77
81
80
79
74
61
48
39
35
33
31
31
30
34
38
40
42
44
47
49
51
54

Pressure (mb)

1018
1018
1018
1017
1017
1017
1017
1017
1017
1016
1015
1014
1014
1013
1012
1011
1011
1011
1011
1010
1010
1010
1010
1010

Ozone (du)

284
285
286
288
291
292
294
294
295
296
297
299
303
304
303
302
299
297
295
293
292
290
289
290

Thursday 8

Waning Crescent 6%

04:26

17:24

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
21 Bad
22 Bad
23 Bad
00 Bad
01 OK

Sun - Rise: 07:13, Set: 18:25, Transit: 12:49. Moon - Rise: 04:26, Set: 17:24. Civil Dark: 18:57 - 06:41. Nautical Dark: 19:34 - 06:03. Astro Dark: 20:12 - 05:25

Total Clouds (% Sky Obscured)

100
100
100
100
99
99
99
100
100
100
100
100
100
100
100
97
94
92
72
53
50
49
45
38

Low Clouds (% Sky Obscured)

0
0
0
0
0
2
22
40
51
54
60
66
52
40
29
16
13
5
19
35
50
49
45
38

Medium Clouds (% Sky Obscured)

26
26
25
31
37
95
80
78
99
86
99
100
100
100
100
97
94
92
36
38
39
29
13
0

High Clouds (% Sky Obscured)

99
100
100
98
95
93
96
98
100
100
97
100
77
59
5
35
0
0
23
43
50
41
21
2

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
8
9
8
8
9
9
8
4
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
Very Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Very Light Rain
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

0
0
0
0
1
2
17
40
41
69
91
95
95
90
69
55
38
7
9
7
3
5
6
2

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

1
2
2
2
3
3
3
3
4
5
6
9
11
12
12
14
13
12
13
11
12
11
10
10

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

1
2
2
3
3
4
4
5
9
11
11
11
11
11
11
11
8
6
6
5
5
4
5
5

Relative Humidity (%)

56
58
60
62
63
65
62
61
72
79
74
79
79
80
84
82
76
68
71
72
72
70
78
78

Pressure (mb)

1009
1009
1009
1008
1008
1007
1007
1007
1007
1006
1007
1007
1007
1008
1008
1009
1011
1012
1013
1014
1015
1015
1016
1016

Ozone (du)

290
289
289
291
292
293
294
297
298
300
301
301
303
304
304
307
313
314
315
316
319
321
322
321

Friday 9

Waning Crescent 2%

05:44

17:37

02 OK
03 OK
04 OK
05 OK
06 OK
07 OK
08 OK
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

Sun - Rise: 07:15, Set: 18:22, Transit: 12:49. Moon - Rise: 05:44, Set: 17:37. Civil Dark: 18:55 - 06:42. Nautical Dark: 19:32 - 06:05. Astro Dark: 20:10 - 05:27

Total Clouds (% Sky Obscured)

41
38
34
27
23
21
33
61
68
65
84
99
99
99
100
99
99
98
99
99
100
100
100
100

Low Clouds (% Sky Obscured)

41
38
34
27
23
19
28
38
46
35
30
26
31
32
35
36
37
38
46
53
62
77
89
100

Medium Clouds (% Sky Obscured)

1
2
3
2
1
0
3
6
9
12
15
19
32
42
50
49
49
51
65
83
100
98
95
93

High Clouds (% Sky Obscured)

1
1
0
0
2
5
7
30
30
26
54
81
61
40
15
10
10
30
35
30
35
31
16
13

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 (%)

1
1
0
1
1
2
3
4
2
14
16
12
19
22
15
13
7
6
21
33
38
43
45
45

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)

10
11
12
12
11
12
12
13
15
16
17
17
17
15
14
13
13
12
12
12
13
14
15
16

Chance of Frost

Temperature (°C)

8
8
7
7
7
7
7
9
10
12
13
13
14
14
13
13
12
12
11
11
10
10
10
10

Feels Like (°C)

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

Dew Point (°C)

4
4
3
3
3
3
3
4
4
3
2
1
1
0
-1
-1
-1
-1
-1
1
2
3
4
5

Relative Humidity (%)

77
77
74
75
77
76
77
72
63
54
47
42
41
40
38
37
39
42
45
51
58
64
68
73

Pressure (mb)

1016
1017
1017
1017
1017
1017
1018
1018
1018
1018
1017
1017
1017
1016
1016
1016
1016
1016
1016
1015
1015
1015
1014
1014

Ozone (du)

320
318
316
314
313
311
309
308
307
305
304
301
298
296
294
292
289
286
283
281
280
278
279
279

Saturday 10

New Moon 0%

07:01

17:51

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
21 Bad
22 Bad
23 Bad
00 Bad
01 Bad

Sun - Rise: 07:16, Set: 18:20, Transit: 12:48. Moon - Rise: 07:01, Set: 17:51. Civil Dark: 18:53 - 06:44. Nautical Dark: 19:30 - 06:06. Astro Dark: 20:08 - 05:29

Total Clouds (% Sky Obscured)

97
94
91
93
95
97
98
99
100
96
91
87
91
97
100
96
92
88
92
95
98
95
91
88

Low Clouds (% Sky Obscured)

95
91
86
85
83
82
73
66
58
62
62
61
43
39
35
33
32
35
42
51
58
66
76
82

Medium Clouds (% Sky Obscured)

78
66
53
62
71
80
86
93
100
93
91
86
80
78
73
64
52
39
38
41
40
38
33
28

High Clouds (% Sky Obscured)

7
4
0
0
0
0
25
47
60
50
45
45
40
65
71
54
27
0
28
55
82
60
38
13

ISS Passover

Visibility (miles)

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

Precipitation Probability (%)

35
26
12
25
32
32
47
52
51
41
35
31
58
75
85
69
56
39
42
42
41
40
39
34

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

10
10
10
10
11
11
11
12
13
14
15
15
15
14
14
14
13
13
13
13
12
12
12
12

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

77
77
80
81
81
81
81
80
80
79
74
68
62
68
73
76
79
82
84
81
79
76
73
72

Pressure (mb)

1013
1013
1013
1013
1012
1012
1012
1012
1012
1012
1012
1011
1011
1011
1011
1011
1011
1011
1012
1012
1012
1012
1012
1012

Ozone (du)

280
278
277
276
277
277
277
280
283
286
286
286
287
287
288
289
289
289
290
291
292
293
295
296

Sunday 11

Waxing Crescent 1%

08:17

18:07

Sun - Rise: 07:18, Set: 18:18, Transit: 12:48. Moon - Rise: 08:17, Set: 18:07. Civil Dark: 18:51 - 06:45. Nautical Dark: 19:28 - 06:08. Astro Dark: 20:06 - 05:30

Total Clouds (% Sky Obscured)

Low Clouds (% Sky Obscured)

Medium Clouds (% Sky Obscured)

High Clouds (% Sky Obscured)

ISS Passover

Visibility (miles)

Fog (%)

Precipitation Type

Precipitation Probability (%)

Precipitation Amount (mm)

Wind Speed/Direction (mph)

Chance of Frost

Temperature (°C)

Feels Like (°C)

Dew Point (°C)

Relative Humidity (%)

Pressure (mb)

Ozone (du)

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

Generated: 05/10/26 02:21:41. Forecast: 05/10/26 to 11/10/26. Timezone: UTC+2.00