Clear Outside v1.0 - International Weather Forecasts For Astronomers

Monday 5

Waning Gibbous 91%

18:51

09:41

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

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 - 06:41. Astro Dark: 18:13 - 06:01

Total Clouds (% Sky Obscured)

5
7
8
25
61
51
35
38
36
32
38
67
41
35
76
11
5
5
5
5
5
5
5
5

Low Clouds (% Sky Obscured)

1
1
5
13
21
27
35
38
36
32
38
64
41
35
54
7
1
2
2
2
2
2
2
2

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)

5
7
5
11
57
45
4
7
4
0
0
3
3
3
50
4
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
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
3
3
3
2
2
2
2
1
2
2
2
3
4
4
3
4
4
4
4
4
4
4
4

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

89
89
87
85
79
75
72
70
70
74
81
86
87
87
87
89
89
89
89
87
87
85
87
87

Pressure (mb)

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

Ozone (du)

362
365
369
373
375
372
370
368
363
363
366
368
367
366
370
377
383
385
385
386
387
390
392
395

Tuesday 6

Waning Gibbous 83%

20:14

10:01

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

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)

5
4
4
13
34
33
37
42
15
6
11
15
11
25
62
80
84
67
53
39
22
24
22
21

Low Clouds (% Sky Obscured)

2
2
2
2
2
2
1
1
5
1
11
5
9
25
62
66
68
42
21
15
8
11
11
10

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
1
10
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

0
0
0
5
20
20
20
25
0
0
0
0
0
3
0
3
3
4
0
3
0
0
0
0

ISS Passover

Visibility (miles)

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

Chance of Frost

Temperature (°C)

-7
-8
-8
-7
-6
-5
-4
-3
-2
-2
-3
-4
-5
-6
-6
-6
-6
-6
-7
-7
-7
-7
-8
-8

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

87
87
87
85
79
73
70
69
71
74
82
87
89
89
89
89
89
89
87
89
88
88
90
88

Pressure (mb)

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

Ozone (du)

397
396
394
391
390
391
391
391
394
392
391
390
392
397
399
401
404
405
404
406
406
407
408
409

Wednesday 7

Waning Gibbous 74%

21:32

10:16

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

20
21
23
4
5
12
41
34
13
4
5
12
7
6
7
4
4
4
15
20
25
30
35
49

Low Clouds (% Sky Obscured)

10
8
10
1
1
5
20
18
8
2
3
3
3
3
3
2
2
2
2
17
25
30
35
49

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
14
20
25
30
26
16

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
8
1
0
0
0
0
0
0
0
0
0
4
3

ISS Passover

Visibility (miles)

5
5
5
8
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
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
0
1
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

90
90
90
87
83
79
75
72
68
73
81
84
85
87
87
87
87
88
88
87
87
85
83
82

Pressure (mb)

1020
1020
1020
1020
1020
1019
1019
1018
1017
1016
1016
1016
1016
1016
1016
1016
1016
1016
1015
1015
1015
1015
1015
1015

Ozone (du)

407
408
411
412
413
413
412
410
404
407
408
407
409
411
411
408
407
406
402
398
398
390
361
340

Thursday 8

Waning Gibbous 65%

22:46

10:29

06 Bad
07 Bad
08 Bad
09 Bad
10 Bad
11 OK
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

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)

100
90
77
79
85
48
52
51
55
45
59
80
97
93
94
89
94
97
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

100
84
73
69
65
34
28
26
22
19
24
31
60
63
71
74
78
81
86
72
52
51
47
74

Medium Clouds (% Sky Obscured)

0
9
17
18
30
41
52
50
53
45
54
69
77
81
85
66
65
72
80
72
89
100
100
100

High Clouds (% Sky Obscured)

3
3
0
0
16
28
33
28
14
3
18
33
50
35
25
11
25
44
69
90
96
100
94
88

ISS Passover

Visibility (miles)

3
3
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
6
6
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
Snow

Precipitation Probability (%)

2
4
2
1
1
0
0
0
0
0
0
0
0
5
6
7
9
11
14
13
8
5
33
55

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
0.2

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-9
-10
-10
-10
-9
-8
-7
-6
-5
-5
-5
-6
-7
-8
-7
-7
-7
-8
-7
-6
-7
-7
-6
-6

Dew Point (°C)

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

Relative Humidity (%)

82
80
79
80
79
75
72
69
71
75
84
87
89
91
89
89
89
89
86
86
86
86
84
86

Pressure (mb)

1015
1015
1015
1016
1016
1016
1015
1015
1014
1014
1014
1014
1013
1013
1013
1012
1012
1011
1011
1010
1009
1008
1007
1006

Ozone (du)

331
334
329
330
333
336
336
335
335
334
334
340
346
346
341
338
332
326
327
330
331
331
328
329

Friday 9

Waning Gibbous 55%

23:58

10:41

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
04 Bad
05 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 - 06:40. Astro Dark: 18:17 - 06:01

Total Clouds (% Sky Obscured)

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

Low Clouds (% Sky Obscured)

96
90
85
81
78
74
69
70
72
70
63
54
36
55
40
25
26
29
30
28
24
22
25
23

Medium Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
100
100
100
90
79
72
77
82
82
88
94
100
100
100

High Clouds (% Sky Obscured)

85
90
95
100
100
100
100
100
100
100
83
70
70
95
90
85
75
65
55
56
58
54
48
27

ISS Passover

Visibility (miles)

0
0
0
0
0
0
0
0
4
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

Snow
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 (%)

87
95
95
95
94
95
95
61
17
0
15
4
3
4
3
0
2
3
4
5
5
4
6
7

Precipitation Amount (mm)

0.6
0.7
1.1
0.9
0.5
1.3
0.8
0.2
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
4
5
4
4
4
4
4
5
5
5
6
6
6
6
7
7
8
8
8

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

91
94
96
96
96
98
100
98
98
96
98
98
98
96
96
94
94
94
94
94
94
94
94
96

Pressure (mb)

1005
1004
1003
1002
1001
1001
1000
1000
1000
1000
1000
999
999
999
1000
1000
1000
1000
1000
1000
1000
1000
1000
1000

Ozone (du)

329
329
330
329
328
328
332
333
335
335
337
342
346
348
349
351
352
354
356
358
363
367
371
375

Saturday 10

Third Quarter 52%

01:09

10:54

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
04 Bad
05 Bad

Sun - Rise: 07:57, Set: 16:21, Transit: 12:09. Moon - Rise: 01:09, Set: 10:54. Civil Dark: 16:59 - 07:20. Nautical Dark: 17:40 - 06:39. Astro Dark: 18:19 - 06:00

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
99
97
95
92
95
97
100
99
99
97
96
94
92
91
90
88
92
96

Low Clouds (% Sky Obscured)

26
35
41
47
49
50
52
59
67
76
82
87
92
90
90
90
87
85
85
85
85
86
91
95

Medium Clouds (% Sky Obscured)

100
100
100
99
93
87
80
61
38
18
24
30
49
61
73
84
83
81
78
75
71
68
59
50

High Clouds (% Sky Obscured)

16
16
11
11
10
8
7
9
8
4
24
46
67
44
22
0
0
0
0
0
3
12
22
32

ISS Passover

Visibility (miles)

9
9
9
9
9
8
6
5
5
5
6
4
2
0
0
0
0
0
0
0
0
0
0
3

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
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
None
None
None

Precipitation Probability (%)

4
8
8
5
7
7
3
7
8
7
21
28
32
44
52
58
53
49
46
45
43
38
33
29

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0.1
0.2
0.2
0.2
0.2
0.1
0.2
0.1
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-5
-5
-5
-5
-5
-5
-5
-5
-2
-2
-2
-2
-2
-2
-3
-3
-3
-3
-3
-2
-7
-7
-8
-8

Dew Point (°C)

-2
-2
-2
-2
-1
-0
0
1
1
0
-0
-0
-1
-0
-0
-0
-1
-2
-3
-4
-5
-5
-6
-7

Relative Humidity (%)

94
94
94
92
92
94
94
98
96
96
96
98
98
100
100
100
100
98
96
96
96
96
94
92

Pressure (mb)

1000
1000
1000
1000
1000
1000
1000
1000
1000
1000
1000
1001
1001
1002
1003
1004
1005
1006
1008
1009
1010
1012
1013
1014

Ozone (du)

380
384
380
375
371
380
388
396
397
398
399
398
396
395
393
392
390
388
386
384
381
378
375
375

Sunday 11

Waning Crescent 45%

02:21

11:07

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

Sun - Rise: 07:57, Set: 16:23, Transit: 12:10. Moon - Rise: 02:21, Set: 11:07. Civil Dark: 17:00 - 07:20. Nautical Dark: 17:41 - 06:39. Astro Dark: 18:20 - 06:00

Total Clouds (% Sky Obscured)

99
98
96
96
80
64
47
44
42
43
46
45
48
63
68
77
84
92
98

Low Clouds (% Sky Obscured)

99
89
78
70
55
45
33
25
15
2
2
2
2
8
14
21
43
65
87

Medium Clouds (% Sky Obscured)

47
39
45
39
30
23
12
18
25
37
46
45
48
60
50
50
50
49
49

High Clouds (% Sky Obscured)

28
13
6
2
1
1
0
27
42
43
46
45
48
63
68
77
81
62
43

ISS Passover

Visibility (miles)

6
8
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

Precipitation Type

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

Precipitation Probability (%)

21
18
16
12
11
9
5
3
1
0
0
0
0
1
3
3
33
48
59

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.1
0.2

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-9
-9
-11
-12
-11
-12
-12
-12
-9
-9
-9
-9
-9
-9
-11
-11
-11
-11
-11

Dew Point (°C)

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

Relative Humidity (%)

89
89
87
85
83
82
82
80
84
87
90
90
90
90
90
88
88
88
88

Pressure (mb)

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

Ozone (du)

375
375
377
379
381
382
382
382
382
383
383
375
367
359
354
348
342
336
330

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

Generated: 05/01/26 06:38:41. Forecast: 05/01/26 to 11/01/26. Timezone: UTC+1.00