Clear Outside v1.0 - International Weather Forecasts For Astronomers

Saturday 3

Full Moon 99%

15:55

08:32

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 OK
21 OK
22 OK
23 OK
00 OK
01 OK
02 Bad
03 Bad
04 OK
05 Bad
06 OK

Sun - Rise: 08:00, Set: 16:13, Transit: 12:06. Moon - Rise: 15:55, Set: 08:32. Civil Dark: 16:51 - 07:22. Nautical Dark: 17:32 - 06:41. Astro Dark: 18:11 - 06:02

Total Clouds (% Sky Obscured)

75
59
51
54
73
86
100
53
28
42
18
84
96
38
38
39
34
31
28
88
52
15
50
17

Low Clouds (% Sky Obscured)

30
25
40
48
56
41
58
53
28
42
18
29
30
38
38
31
31
31
28
74
44
15
42
17

Medium Clouds (% Sky Obscured)

0
30
9
3
10
86
92
30
7
42
1
84
91
10
38
39
34
31
2
0
0
9
30
0

High Clouds (% Sky Obscured)

0
0
1
0
0
0
0
0
0
0
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
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
1
1
1
2
1
1
2
0
0
1
0
1

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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

-6
-5
-5
-5
-5
-5
-5
-5
-5
-5
-6
-7
-6
-6
-6
-6
-6
-5
-5
-5
-5
-5
-5
-6

Relative Humidity (%)

70
77
74
68
67
64
66
66
66
66
67
65
67
68
71
72
74
75
77
77
77
79
79
76

Pressure (mb)

1003
1004
1005
1005
1005
1004
1004
1004
1004
1004
1004
1004
1005
1005
1005
1005
1006
1006
1006
1007
1007
1007
1008
1008

Ozone (du)

397
379
372
368
369
372
373
377
380
378
374
376
381
378
379
370
367
365
367
361
360
360
361
366

Sunday 4

Waning Gibbous 96%

17:23

09:13

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

Sun - Rise: 08:00, Set: 16:14, Transit: 12:07. Moon - Rise: 17:23, Set: 09:13. Civil Dark: 16:52 - 07:22. Nautical Dark: 17:33 - 06:41. Astro Dark: 18:12 - 06:01

Total Clouds (% Sky Obscured)

16
16
17
16
13
28
20
15
53
66
61
48
15
13
4
5
5
4
4
4
4
4
5
5

Low Clouds (% Sky Obscured)

16
16
17
16
13
28
20
15
22
31
30
34
15
13
1
1
1
1
1
1
1
1
1
1

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
2
0
0
0
0
0
0
0
0
0
0
0
0

High 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

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
1
1
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)

13
14
14
14
14
14
13
12
10
10
9
9
10
11
11
10
8
7
6
6
5
5
5
5

Chance of Frost

Temperature (°C)

-2
-2
-2
-2
-1
-0
0
0
0
-1
-1
-2
-2
-2
-3
-3
-3
-3
-4
-4
-4
-5
-5
-6

Feels Like (°C)

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

Dew Point (°C)

-7
-7
-7
-7
-6
-6
-6
-5
-5
-5
-5
-5
-6
-7
-7
-7
-7
-7
-7
-7
-7
-7
-8
-8

Relative Humidity (%)

72
71
71
68
68
66
65
67
69
72
75
75
74
72
73
73
76
76
79
81
82
82
84
85

Pressure (mb)

1009
1009
1010
1011
1011
1011
1011
1011
1011
1012
1012
1013
1013
1013
1014
1014
1014
1014
1015
1015
1014
1014
1014
1014

Ozone (du)

375
363
363
372
377
380
380
364
360
363
366
364
358
354
352
349
347
347
349
351
354
358
361
364

Monday 5

Waning Gibbous 91%

18:51

09:41

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

Sun - Rise: 08:00, Set: 16:15, Transit: 12:07. Moon - Rise: 18:51, Set: 09:41. Civil Dark: 16:53 - 07:22. Nautical Dark: 17:34 - 06:40. Astro Dark: 18:13 - 06:01

Total Clouds (% Sky Obscured)

5
9
20
22
28
36
36
18
25
34
36
16
27
18
33
34
39
38
38
35
35
100
100
100

Low Clouds (% Sky Obscured)

1
1
1
1
2
13
29
18
25
34
36
16
27
18
33
14
17
19
17
16
14
15
16
17

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
10
0
1
4
11
18
38
38
38
35
35
50
50
57

High Clouds (% Sky Obscured)

0
2
6
8
13
13
12
2
0
0
0
0
0
0
6
9
1
9
17
20
20
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
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 (%)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

-8
-8
-9
-9
-9
-8
-8
-8
-8
-7
-7
-7
-7
-7
-7
-7
-7
-8
-8
-8
-8
-8
-8
-9

Relative Humidity (%)

85
85
84
76
70
67
64
63
65
72
75
79
81
82
85
85
85
85
85
84
84
85
82
82

Pressure (mb)

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

Ozone (du)

363
364
367
368
368
368
366
367
366
366
368
370
372
375
386
395
396
392
389
389
390
391
391
388

Tuesday 6

Waning Gibbous 83%

20:14

10:01

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
04 Bad
05 Bad
06 Bad

Sun - Rise: 07:59, Set: 16:16, Transit: 12:08. Moon - Rise: 20:14, Set: 10:01. Civil Dark: 16:54 - 07:22. Nautical Dark: 17:35 - 06:40. Astro Dark: 18:14 - 06:01

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
97
94
91
89
87
86
90
94
98
99
99
100
100
100
100

Low Clouds (% Sky Obscured)

17
18
19
14
10
5
4
3
2
3
12
30
25
25
30
25
25
30
33
36
44
44
45
50

Medium Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
96
92
87
86
85
84
85
83
82
89
95
100
100
100
100

High Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
88
74
61
58
49
45
54
71
90
93
97
100
99
98
74

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
5
3
1
1
0
0
0
0
0

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
Snow
Snow
Snow

Precipitation Probability (%)

0
0
0
0
0
0
3
3
2
4
4
2
5
6
9
18
23
22
26
25
35
46
55
58

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

-6
-6
-6
-5
-5
-4
-4
-4
-4
-4
-4
-4
-4
-5
-4
-4
-5
-5
-5
-5
-5
-5
-5
-5

Feels Like (°C)

-9
-10
-9
-8
-8
-7
-8
-7
-8
-8
-8
-7
-7
-8
-7
-7
-8
-9
-9
-9
-9
-9
-10
-10

Dew Point (°C)

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

Relative Humidity (%)

82
82
80
77
73
70
69
69
69
75
76
76
76
75
76
78
82
85
85
87
89
92
92
92

Pressure (mb)

1017
1017
1017
1017
1017
1016
1015
1015
1015
1015
1015
1015
1015
1015
1015
1015
1014
1014
1013
1013
1013
1013
1013
1013

Ozone (du)

386
383
380
381
381
381
379
379
379
381
380
380
379
377
373
372
373
375
378
378
378
378
380
383

Wednesday 7

Waning Gibbous 74%

21:32

10:16

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
04 Bad
05 Bad
06 Bad

Sun - Rise: 07:59, Set: 16:17, Transit: 12:08. Moon - Rise: 21:32, Set: 10:16. Civil Dark: 16:55 - 07:21. Nautical Dark: 17:36 - 06:40. Astro Dark: 18:15 - 06:01

Total Clouds (% Sky Obscured)

100
100
99
100
100
100
100
100
100
100
100
100
100
100
100
88
76
65
69
73
75
83
92
100

Low Clouds (% Sky Obscured)

58
70
84
86
87
87
89
90
93
92
92
93
94
92
90
76
63
50
51
51
53
64
75
85

Medium Clouds (% Sky Obscured)

99
98
98
98
99
100
100
100
100
100
100
100
100
100
100
84
63
40
46
49
56
71
85
100

High Clouds (% Sky Obscured)

47
26
5
28
48
75
76
73
74
70
48
33
35
22
10
8
5
3
2
2
1
0
0
0

ISS Passover

Visibility (miles)

0
0
0
0
0
0
0
0
0
3
6
7
5
6
8
9
9
9
9
6
4
1
1
1

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

Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
None
None
None
None
Snow
Snow
Snow
Snow
None
None
None
None
None
None
None
None

Precipitation Probability (%)

56
65
57
49
47
47
47
39
33
36
33
38
42
42
41
38
33
28
24
19
8
19
25
27

Precipitation Amount (mm)

0.3
0.4
0.3
0.2
0.2
0.2
0.2
0.1
0
0
0
0
0.1
0.1
0.1
0.1
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-10
-9
-9
-10
-9
-9
-8
-8
-8
-9
-9
-9
-9
-9
-9
-9
-9
-9
-9
-11
-11
-10
-11
-11

Dew Point (°C)

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

Relative Humidity (%)

92
92
92
90
90
89
91
91
89
85
82
81
82
84
84
84
85
85
85
87
85
87
87
87

Pressure (mb)

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

Ozone (du)

385
388
393
395
398
400
403
407
407
409
410
411
413
417
421
425
427
429
431
432
434
435
433
431

Thursday 8

Waning Gibbous 65%

22:46

10:29

07 Bad
08 Bad
09 Bad
10 Bad
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 Bad
02 Bad
03 Bad
04 Bad
05 Bad
06 OK

Sun - Rise: 07:58, Set: 16:19, Transit: 12:09. Moon - Rise: 22:46, Set: 10:29. Civil Dark: 16:56 - 07:21. Nautical Dark: 17:37 - 06:40. Astro Dark: 18:16 - 06:01

Total Clouds (% Sky Obscured)

95
88
77
71
65
60
55
52
48
61
75
87
91
95
99
96
94
92
83
73
64
58
50
40

Low Clouds (% Sky Obscured)

72
63
53
52
52
52
48
45
42
52
60
68
76
86
96
84
74
61
54
47
38
35
29
23

Medium Clouds (% Sky Obscured)

95
88
77
71
63
49
34
20
4
33
60
83
84
84
83
83
84
84
67
50
32
32
29
22

High Clouds (% Sky Obscured)

0
0
0
0
0
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
1
1
0
0

ISS Passover

Visibility (miles)

0
3
6
9
9
9
9
9
9
9
6
3
0
3
6
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
Snow
Snow
Snow
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

25
21
14
12
7
1
1
1
0
16
27
34
36
38
30
26
24
20
15
11
7
7
5
1

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0.1
0.1
0.1
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-11
-10
-11
-11
-11
-11
-11
-8
-9
-8
-9
-9
-9
-10
-10
-10
-10
-10
-10
-11
-11
-11
-11
-10

Dew Point (°C)

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

Relative Humidity (%)

87
84
82
79
75
72
69
72
75
78
82
85
90
87
85
82
82
84
84
79
76
73
72
70

Pressure (mb)

1015
1016
1017
1017
1017
1017
1017
1018
1018
1018
1018
1019
1019
1019
1019
1019
1019
1019
1019
1019
1019
1018
1018
1018

Ozone (du)

429
429
430
430
431
432
434
435
436
438
434
430
426
424
422
420
407
395
382
374
366
357
354
352

Friday 9

Waning Gibbous 55%

23:58

10:41

07 OK
08 Bad
09 OK
10 OK
11 OK
12 OK
13 Bad
14 Bad
15 Bad
16 Bad
17 Bad
18 Bad
19 Bad
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad

Sun - Rise: 07:58, Set: 16:20, Transit: 12:09. Moon - Rise: 23:58, Set: 10:41. Civil Dark: 16:57 - 07:21. Nautical Dark: 17:38 - 06:39. Astro Dark: 18:17 - 06:00

Total Clouds (% Sky Obscured)

46
50
38
42
42
47
64
81
98
99
99
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

12
5
0
0
0
0
2
4
6
31
55
78
82
86
89
90
90
92

Medium Clouds (% Sky Obscured)

40
46
38
42
42
47
62
63
73
85
93
100
100
100
100
100
100
100

High Clouds (% Sky Obscured)

0
0
1
2
3
3
35
67
98
99
99
100
100
100
100
73
46
20

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
8
9
9
9
8
7

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
Snow
Snow
Snow
Snow
Snow
Snow

Precipitation Probability (%)

2
1
0
0
0
0
0
0
0
9
18
27
54
71
82
76
68
58

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0.2
0.4
0.6
0.5
0.3
0.2

Wind Speed/Direction (mph)

8
8
8
8
9
9
9
9
9
9
10
11
11
12
11
11
9
7

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

-11
-10
-11
-10
-10
-10
-9
-9
-9
-9
-9
-9
-9
-9
-9
-9
-8
-7

Relative Humidity (%)

69
67
65
65
61
60
58
62
63
65
64
62
61
59
59
59
65
72

Pressure (mb)

1017
1016
1016
1015
1014
1012
1011
1010
1008
1007
1006
1005
1004
1004
1003
1002
1002
1002

Ozone (du)

349
346
343
339
337
334
332
330
328
326
327
328
329
329
329
329
330
330

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

Generated: 03/01/26 07:11:16. Forecast: 03/01/26 to 09/01/26. Timezone: UTC+1.00