Clear Outside v1.0 - International Weather Forecasts For Astronomers

Wednesday 26

Waxing Crescent 34%

12:25

21:31

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
04 Bad
05 Bad
06 Bad
07 Bad
08 OK
09 Good
10 Good

Sun - Rise: 07:34, Set: 16:05, Transit: 11:49. Moon - Rise: 12:25, Set: 21:31. Civil Dark: 16:42 - 06:57. Nautical Dark: 17:23 - 06:16. Astro Dark: 18:01 - 05:38

Total Clouds (% Sky Obscured)

91
93
95
100
100
100
100
100
100
100
100
100
100
99
93
76
92
90
93
94
53
28
14
6

Low Clouds (% Sky Obscured)

91
92
93
97
99
97
87
85
87
83
93
94
83
77
67
59
85
83
87
90
53
28
10
2

Medium Clouds (% Sky Obscured)

90
93
95
100
100
100
100
100
100
100
100
100
100
95
82
45
50
31
27
19
5
2
0
0

High Clouds (% Sky Obscured)

91
83
78
72
38
27
7
25
24
38
43
37
76
65
65
65
65
30
4
3
3
3
0
0

ISS Passover

Visibility (miles)

9
9
9
9
4
4
4
4
4
5
4
4
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
Snow
Snow
Snow
Snow
Snow
Snow
Snow
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

35
40
48
54
62
57
52
48
41
33
17
11
13
11
5
3
2
5
4
2
2
1
0
1

Precipitation Amount (mm)

0
0.2
0.1
0.2
0.3
0.2
0.1
0.1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

1
1
1
1
1
1
1
1
1
1
2
2
2
2
2
1
1
1
1
1
1
1
1
2

Feels Like (°C)

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

Dew Point (°C)

-3
-3
-3
-3
-1
-1
-1
-1
-1
0
1
1
1
1
1
0
0
-0
-2
-2
-2
-2
-2
-2

Relative Humidity (%)

80
77
78
77
84
91
88
88
88
91
94
94
93
91
91
93
91
89
81
80
81
84
81
77

Pressure (mb)

1013
1014
1014
1014
1015
1016
1017
1017
1018
1018
1019
1020
1020
1021
1021
1022
1022
1022
1023
1023
1024
1024
1025
1025

Ozone (du)

314
314
313
313
313
314
315
315
316
315
313
315
317
318
318
316
314
314
315
319
321
321
320
313

Thursday 27

Waxing Crescent 44%

12:42

22:48

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

Sun - Rise: 07:36, Set: 16:04, Transit: 11:49. Moon - Rise: 12:42, Set: 22:48. Civil Dark: 16:41 - 06:58. Nautical Dark: 17:22 - 06:18. Astro Dark: 18:01 - 05:39

Total Clouds (% Sky Obscured)

49
74
76
56
33
49
74
89
96
85
94
98
86
84
41
51
55
43
14
10
11
8
25
26

Low Clouds (% Sky Obscured)

2
19
30
25
31
11
20
17
15
19
15
30
35
41
40
16
25
18
2
2
2
2
2
6

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
1
28
43
18
3
0
0
2
12
24
12
19
5
1
2
0
0
0

High Clouds (% Sky Obscured)

43
65
70
49
16
48
68
75
72
74
89
93
72
63
12
31
41
24
4
5
7
4
25
26

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

70
65
64
65
70
78
83
83
86
86
87
86
86
86
86
86
86
86
86
86
86
84
78
70

Pressure (mb)

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

Ozone (du)

309
307
304
302
301
301
301
302
300
300
299
299
298
297
295
294
292
292
291
289
288
288
288
288

Friday 28

First Quarter 55%

12:57

00:06

11 OK
12 OK
13 Bad
14 Bad
15 OK
16 OK
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

Sun - Rise: 07:37, Set: 16:04, Transit: 11:50. Moon - Rise: 12:57, Set: 00:06. Civil Dark: 16:41 - 07:00. Nautical Dark: 17:21 - 06:19. Astro Dark: 18:00 - 05:40

Total Clouds (% Sky Obscured)

37
34
73
55
42
43
49
83
97
98
98
98
100
100
100
100
100
100
100
100
100
100
100
99

Low Clouds (% Sky Obscured)

21
29
35
38
42
43
48
46
50
52
47
50
55
81
94
89
88
91
94
98
97
96
95
88

Medium Clouds (% Sky Obscured)

6
6
31
50
40
41
49
77
91
93
93
93
92
97
94
94
96
100
100
99
100
94
84
94

High Clouds (% Sky Obscured)

24
10
51
16
5
10
9
34
75
83
91
91
100
100
100
100
100
100
100
100
100
100
100
86

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
7
6
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
Very Light Rain
Very Light Rain
Light Rain
Very Light Rain
Very Light Rain
Light Rain
Very Light Rain

Precipitation Probability (%)

0
0
0
0
0
0
0
0
0
0
1
2
5
19
32
42
51
55
62
82
57
66
72
62

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.2
0.3
0.6
0.2
0.3
0.4
0.2

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-1
-0
1
0
1
-1
-1
-1
-3
-3
-3
-3
-3
-3
-2
-2
-2
-1
-1
-1
-1
-0
0
-0

Dew Point (°C)

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

Relative Humidity (%)

65
62
61
62
70
78
81
81
81
81
78
77
75
75
76
81
89
94
94
94
93
94
93
93

Pressure (mb)

1023
1022
1021
1021
1021
1020
1020
1020
1020
1020
1019
1019
1019
1018
1017
1017
1017
1016
1016
1016
1015
1015
1015
1015

Ozone (du)

288
289
291
292
293
294
293
292
292
291
293
292
294
294
293
291
289
287
285
283
280
280
281
283

Saturday 29

Waxing Gibbous 66%

13:10

01:25

11 Bad
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad
17 Bad
18 Bad
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

Sun - Rise: 07:38, Set: 16:03, Transit: 11:50. Moon - Rise: 13:10, Set: 01:25. Civil Dark: 16:40 - 07:01. Nautical Dark: 17:21 - 06:20. Astro Dark: 18:00 - 05:41

Total Clouds (% Sky Obscured)

98
97
88
77
64
65
54
42
35
32
31
45
63
83
76
63
51
68
84
100
88
76
54
55

Low Clouds (% Sky Obscured)

80
72
64
57
46
51
47
40
33
30
25
30
36
48
49
46
45
48
33
31
30
31
34
33

Medium Clouds (% Sky Obscured)

89
77
67
50
26
22
2
2
2
2
2
0
0
0
0
0
0
12
26
40
27
14
1
11

High Clouds (% Sky Obscured)

65
40
23
11
1
1
1
2
2
2
3
19
36
59
55
41
30
50
75
100
72
43
7
17

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 (%)

50
42
23
9
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
3
3
3
4
4
4
4
4
3
3
2
3
3
4
4
4
4
4
4
4
4
4
4

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

1
1
2
1
1
1
0
0
1
1
1
0
-0
-1
-2
-3
-3
-3
-3
-3
-3
-3
-2
-1

Dew Point (°C)

2
2
2
2
2
2
2
1
1
1
0
-1
-0
-1
-1
-1
-1
-1
-1
-1
-2
-1
-1
-1

Relative Humidity (%)

91
89
88
86
88
91
93
93
93
93
93
91
93
91
92
91
92
91
91
94
92
94
91
84

Pressure (mb)

1015
1015
1014
1014
1014
1014
1014
1014
1014
1014
1014
1014
1014
1014
1013
1013
1013
1013
1013
1013
1013
1013
1013
1013

Ozone (du)

285
284
283
283
283
283
284
284
285
287
287
288
290
290
290
291
291
292
294
296
297
298
300
301

Sunday 30

Waxing Gibbous 76%

13:24

02:48

11 Bad
12 Bad
13 Bad
14 OK
15 OK
16 OK
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

Sun - Rise: 07:40, Set: 16:02, Transit: 11:50. Moon - Rise: 13:24, Set: 02:48. Civil Dark: 16:40 - 07:02. Nautical Dark: 17:21 - 06:21. Astro Dark: 18:00 - 05:42

Total Clouds (% Sky Obscured)

64
63
57
46
36
44
65
90
69
87
88
91
93
96
97
99
100
100
100
100
100
99
99
98

Low Clouds (% Sky Obscured)

33
34
33
28
25
34
41
49
46
52
70
88
92
91
93
96
99
99
99
100
100
99
99
98

Medium Clouds (% Sky Obscured)

22
31
19
9
0
0
4
5
8
41
54
50
50
50
35
35
45
50
55
60
63
67
65
67

High Clouds (% Sky Obscured)

32
44
34
27
18
21
29
38
29
28
17
35
42
58
57
60
55
56
62
71
56
40
17
10

ISS Passover

Visibility (miles)

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

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
1
2
3
2
0
0
0
0
0
1
1
1
20
28
32
36
38
41
43

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

0
1
2
2
1
0
0
-1
-2
-2
-2
-3
-2
-2
-2
-2
-2
-2
-2
-2
-1
-1
-1
-1

Dew Point (°C)

-2
-2
-2
-2
-1
-1
-1
-2
-2
-2
-2
-2
-2
-2
-2
-2
-2
-2
-2
-1
-1
0
1
2

Relative Humidity (%)

78
74
73
73
80
84
86
84
86
84
86
83
81
80
80
80
78
78
80
83
86
89
93
96

Pressure (mb)

1013
1013
1013
1013
1013
1013
1014
1014
1015
1015
1016
1016
1017
1017
1017
1017
1018
1018
1018
1019
1019
1020
1020
1021

Ozone (du)

302
302
305
307
308
310
311
312
313
314
315
316
317
321
324
327
330
333
333
332
331
331
332
332

Monday 1

Waxing Gibbous 86%

13:39

04:16

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
04 Bad
05 Bad
06 Bad
07 Bad
08 Bad
09 Bad
10 Bad

Sun - Rise: 07:41, Set: 16:02, Transit: 11:51. Moon - Rise: 13:39, Set: 04:16. Civil Dark: 16:39 - 07:03. Nautical Dark: 17:20 - 06:22. Astro Dark: 17:59 - 05:43

Total Clouds (% Sky Obscured)

97
95
95
97
98
98
97
97
96
95
95
95
97
100
100
100
100
94
86
80
68
62
54
50

Low Clouds (% Sky Obscured)

97
95
95
97
98
97
96
94
93
92
90
92
96
100
100
100
100
94
86
80
68
62
54
50

Medium Clouds (% Sky Obscured)

73
85
83
82
75
59
36
16
10
5
1
1
0
0
0
0
0
0
0
0
0
0
0
2

High Clouds (% Sky Obscured)

7
17
12
6
1
4
7
10
7
3
0
0
0
0
0
1
2
2
3
5
4
4
3
5

ISS Passover

Visibility (miles)

4
2
0
0
1
1
1
0
0
0
0
0
0
0
0
1
3
4
6
8
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 (%)

36
27
26
21
3
6
7
10
5
4
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
2
3
3
3
4
4
4
4
4
4
4
4
4
5
5
5
5
5
6
6

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-1
-1
-0
0
0
0
1
0
-0
-1
-1
-2
-2
-2
-2
-1
-1
-1
-1
0
-0
-2
-2
-2

Dew Point (°C)

2
2
2
2
2
2
2
1
1
1
1
1
1
2
2
1
1
1
1
-0
-1
-1
-1
-2

Relative Humidity (%)

98
98
98
98
98
96
98
98
100
100
100
98
98
100
100
98
96
96
94
93
91
86
83
80

Pressure (mb)

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

Ozone (du)

333
333
333
332
330
329
325
321
318
315
313
310
309
308
306
304
303
301
299
298
296
294
292
290

Tuesday 2

Waxing Gibbous 93%

13:58

05:48

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
04 Bad
05 Bad
06 Bad

Sun - Rise: 07:42, Set: 16:01, Transit: 11:51. Moon - Rise: 13:58, Set: 05:48. Civil Dark: 16:39 - 07:04. Nautical Dark: 17:20 - 06:23. Astro Dark: 17:59 - 05:44

Total Clouds (% Sky Obscured)

58
61
65
75
84
84
90
97
97
98
98
99
100
100
100
99
99
99
98
98

Low Clouds (% Sky Obscured)

58
61
65
51
36
30
28
25
24
22
25
27
33
43
49
58
66
59
46
40

Medium Clouds (% Sky Obscured)

5
7
17
29
53
52
47
47
50
53
47
49
51
53
47
41
40
40
41
42

High Clouds (% Sky Obscured)

8
9
19
31
25
18
12
0
0
0
0
0
0
10
10
15
15
10
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

Fog (%)

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

Precipitation Probability (%)

0
0
0
2
5
17
23
30
31
28
21
14
7
2
15
21
23
23
22
21

Precipitation Amount (mm)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-2
-2
-2
1
1
1
0
0
0
-3
-2
-2
-2
-2
-3
-3
-3
-3
-3
-3

Dew Point (°C)

-2
-2
-2
-2
-1
-1
-1
-1
-1
-1
-1
-1
-2
-1
-2
-2
-1
-1
-2
-2

Relative Humidity (%)

74
72
68
72
76
82
81
84
86
86
86
88
88
89
87
89
91
91
89
89

Pressure (mb)

1019
1019
1018
1018
1018
1018
1018
1018
1018
1018
1018
1019
1019
1019
1019
1019
1019
1019
1019
1019

Ozone (du)

288
285
282
279
275
271
269
267
265
264
263
262
261
260
258
258
258
257
257
256

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

Generated: 26/11/25 11:06:09. Forecast: 26/11/25 to 02/12/25. Timezone: UTC+1.00