Clear Outside v1.0 - International Weather Forecasts For Astronomers

Friday 27

Waxing Gibbous 72%

11:30

04:06

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

Sun - Rise: 05:39, Set: 18:20, Transit: 12:01. Moon - Rise: 11:30, Set: 04:06. Civil Dark: 18:53 - 05:06. Nautical Dark: 19:32 - 04:27. Astro Dark: 20:13 - 03:46

Total Clouds (% Sky Obscured)

100
88
70
83
85
55
27
25
22
22
8
34
44
50
43
56
63
61
59
63
69
54
53
64

Low Clouds (% Sky Obscured)

40
36
38
42
38
25
1
1
1
1
1
10
18
13
7
8
6
25
49
56
62
54
50
64

Medium Clouds (% Sky Obscured)

62
37
61
64
61
39
27
25
21
12
6
24
38
47
36
52
63
61
59
63
59
54
31
26

High Clouds (% Sky Obscured)

49
65
65
3
3
5
3
5
5
22
3
1
3
3
2
2
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 (%)

6
4
2
2
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)

12
12
13
13
13
13
13
13
14
13
13
11
10
8
7
6
5
5
6
5
5
5
4
4

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

80
81
73
64
61
54
46
41
40
39
41
46
52
58
62
65
69
69
71
74
77
77
77
75

Pressure (mb)

1017
1018
1019
1019
1020
1019
1019
1019
1019
1018
1018
1018
1019
1020
1020
1021
1021
1021
1021
1021
1021
1021
1021
1021

Ozone (du)

424
425
424
423
421
419
418
419
420
420
419
419
419
420
420
420
419
419
417
414
411
410
409
408

Saturday 28

Waxing Gibbous 81%

12:54

05:26

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

Sun - Rise: 06:37, Set: 18:22, Transit: 12:01. Moon - Rise: 12:54, Set: 05:26. Civil Dark: 18:55 - 06:04. Nautical Dark: 19:34 - 05:25. Astro Dark: 20:16 - 04:43

Total Clouds (% Sky Obscured)

52
31
23
5
5
15
10
25
31
38
57
57
55
58
77
95
99
100
96
94
95
95
94
88

Low Clouds (% Sky Obscured)

52
31
23
1
1
13
7
22
24
30
30
23
32
43
69
84
82
90
85
87
87
72
72
65

Medium Clouds (% Sky Obscured)

4
0
0
0
0
0
0
7
16
20
37
41
27
31
55
59
69
74
75
90
91
91
88
71

High Clouds (% Sky Obscured)

0
3
3
3
3
3
3
4
3
4
3
3
3
5
3
6
4
5
3
4
1
3
3
11

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
2
3
8
21
31
28
19
11
15
13
10

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

Chance of Frost

Temperature (°C)

0
2
3
5
6
8
9
10
10
10
10
9
7
6
5
5
5
5
4
4
3
3
2
2

Feels Like (°C)

-1
0
2
3
5
7
9
9
9
9
8
8
6
4
3
2
1
1
0
0
0
-0
-1
-1

Dew Point (°C)

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

Relative Humidity (%)

75
68
56
50
46
44
43
43
43
44
44
46
56
60
70
75
73
72
68
71
79
85
89
91

Pressure (mb)

1021
1021
1020
1020
1019
1019
1018
1017
1016
1016
1016
1016
1016
1017
1018
1018
1019
1019
1019
1020
1020
1021
1021
1022

Ozone (du)

406
405
405
406
405
404
403
402
402
403
404
405
407
409
411
415
420
422
422
421
421
418
414
410

Sunday 29

Waxing Gibbous 89%

15:16

05:41

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 OK
00 Good
01 Good
02 OK
03 OK
04 Bad
05 Bad

Sun - Rise: 06:35, Set: 19:23, Transit: 13:00. Moon - Rise: 15:16, Set: 05:41. Civil Dark: 19:56 - 06:02. Nautical Dark: 20:36 - 05:22. Astro Dark: 21:17 - 04:40

Total Clouds (% Sky Obscured)

88
91
95
98
100
97
98
95
92
90
87
86
62
54
64
90
72
26
1
10
21
38
100
100

Low Clouds (% Sky Obscured)

65
78
79
86
77
76
67
65
69
58
59
52
49
54
64
61
30
26
1
1
1
5
6
5

Medium Clouds (% Sky Obscured)

71
76
81
84
87
59
76
80
65
56
51
52
7
1
1
5
10
1
0
0
20
33
99
100

High Clouds (% Sky Obscured)

11
19
32
68
94
85
81
40
7
9
1
8
6
3
12
80
72
3
0
6
16
28
84
88

ISS Passover

Visibility (miles)

9
9
9
7
9
4
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
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 (%)

10
5
6
7
7
17
8
5
2
2
1
1
2
1
1
0
0
0
0
0
0
0
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

91
86
82
85
80
83
72
60
59
54
47
45
47
57
61
64
67
70
77
80
81
81
86
86

Pressure (mb)

1022
1022
1023
1024
1024
1025
1025
1025
1025
1025
1024
1024
1024
1025
1025
1026
1026
1025
1025
1025
1024
1023
1023
1022

Ozone (du)

410
405
404
403
399
395
390
387
386
386
387
384
384
387
394
399
404
410
416
415
410
407
405
405

Monday 30

Waxing Gibbous 95%

16:35

05:54

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: 06:35, Set: 19:25, Transit: 13:00. Moon - Rise: 16:35, Set: 05:54. Civil Dark: 19:58 - 06:02. Nautical Dark: 20:37 - 05:20. Astro Dark: 21:20 - 04:38

Total Clouds (% Sky Obscured)

100
100
98
100
100
100
100
100
100
100
100
100
99
99
98
97
97
89
77
70
75
75
80
85

Low Clouds (% Sky Obscured)

5
3
51
78
80
90
92
92
93
94
95
86
78
69
77
83
89
78
60
48
59
67
72
76

Medium Clouds (% Sky Obscured)

96
100
79
50
100
100
100
100
100
99
99
98
42
98
84
62
41
35
21
15
10
6
2
33

High Clouds (% Sky Obscured)

86
70
75
85
96
100
100
100
86
59
66
35
19
0
0
0
0
0
0
0
0
0
0
0

ISS Passover

Visibility (miles)

9
9
8
7
9
3
3
0
0
0
0
0
7
9
3
0
0
2
2
3
5
1
0
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

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

Precipitation Probability (%)

0
3
21
25
31
55
80
95
95
84
74
58
53
43
76
74
40
31
27
14
26
31
31
29

Precipitation Amount (mm)

0
0
0
0
0
0.3
0.6
0.9
0.8
0.5
0.4
0.2
0
0
0.5
0.6
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

4
5
6
9
11
14
15
14
12
11
10
9
7
7
7
5
3
2
2
2
2
2
2
2

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

89
87
80
88
74
68
74
94
98
98
98
98
93
85
93
98
96
96
96
94
94
96
96
94

Pressure (mb)

1021
1020
1019
1019
1017
1016
1015
1014
1013
1012
1011
1011
1011
1011
1011
1012
1012
1013
1013
1014
1015
1015
1015
1015

Ozone (du)

408
415
417
421
420
420
420
422
424
426
431
432
435
435
438
439
444
448
451
449
451
456
461
466

Tuesday 31

Waxing Gibbous 99%

17:51

06:06

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: 06:33, Set: 19:26, Transit: 13:00. Moon - Rise: 17:51, Set: 06:06. Civil Dark: 20:00 - 05:57. Nautical Dark: 20:39 - 05:18. Astro Dark: 21:22 - 04:35

Total Clouds (% Sky Obscured)

93
100
100
100
100
98
96
95
92
89
85
79
74
67
76
74
76
79
85
90
84
76
69
71

Low Clouds (% Sky Obscured)

83
90
93
97
100
89
79
69
70
71
70
62
56
50
59
59
57
59
61
63
67
71
69
71

Medium Clouds (% Sky Obscured)

66
97
91
82
81
83
85
89
84
77
68
62
56
46
42
28
12
25
31
25
23
22
20
15

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)

2
3
3
5
5
3
3
1
6
5
6
4
0
0
2
2
1
0
3
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
Snow
Snow
Snow
None
Sleet
Sleet
Snow
Snow
Snow
Snow
None
Snow
Snow
Snow
Snow
None
None
None
None
None

Precipitation Probability (%)

28
28
33
39
46
48
55
58
66
75
77
77
68
47
53
57
53
46
40
26
23
26
35
42

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

91
91
86
83
77
70
64
62
61
62
73
88
93
96
93
94
96
98
94
92
89
91
91
94

Pressure (mb)

1015
1016
1016
1016
1016
1016
1016
1015
1015
1014
1015
1015
1015
1015
1016
1019
1020
1020
1021
1021
1021
1022
1022
1022

Ozone (du)

466
470
469
468
471
477
480
484
485
486
490
492
491
491
491
490
489
488
485
481
478
474
470
466

Wednesday 1

Waxing Gibbous 100%

19:06

06:06

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: 06:31, Set: 19:28, Transit: 12:59. Moon - Rise: 19:06, Set: 06:06. Civil Dark: 20:01 - 05:55. Nautical Dark: 20:41 - 05:15. Astro Dark: 21:24 - 04:32

Total Clouds (% Sky Obscured)

75
80
84
88
91
95
97
100
90
81
72
73
70
65
65
64
67
76
85
94
96
98
100
100

Low Clouds (% Sky Obscured)

75
80
83
87
91
94
97
100
87
75
65
54
43
33
24
15
7
27
48
69
77
84
91
91

Medium Clouds (% Sky Obscured)

14
14
23
49
65
55
42
27
30
34
37
48
60
65
65
58
48
52
55
56
70
84
98
98

High Clouds (% Sky Obscured)

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

ISS Passover

Visibility (miles)

9
9
9
9
9
8
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
8
8

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
Very Light Rain
None
None

Precipitation Probability (%)

46
46
49
47
39
41
42
42
38
34
28
19
14
10
2
1
0
8
10
8
25
49
45
49

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
0

Wind Speed/Direction (mph)

2
2
2
2
3
3
4
4
5
4
4
7
6
5
4
3
3
2
1
1
2
2
3
3

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

91
89
88
82
75
68
66
64
62
61
60
59
65
75
83
83
85
85
86
86
88
89
94
96

Pressure (mb)

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

Ozone (du)

462
458
453
445
437
428
421
415
408
402
396
391
386
382
378
373
368
363
357
352
347
344
342
339

Thursday 2

Full Moon 99%

20:20

06:18

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: 06:28, Set: 19:30, Transit: 12:59. Moon - Rise: 20:20, Set: 06:18. Civil Dark: 20:03 - 05:53. Nautical Dark: 20:43 - 05:13. Astro Dark: 21:26 - 04:30

Total Clouds (% Sky Obscured)

99
99
99
98
95
90
83
70
78
89
100
98
95
92
77
60
42
59
73
89

Low Clouds (% Sky Obscured)

92
93
91
90
87
81
75
70
66
65
62
49
45
35
31
21
11
21
31
38

Medium Clouds (% Sky Obscured)

93
90
81
70
63
49
34
35
55
76
97
90
79
70
61
52
42
48
54
63

High Clouds (% Sky Obscured)

2
3
3
4
5
5
5
5
20
34
49
64
80
92
63
32
0
33
67
89

ISS Passover

Visibility (miles)

5
3
0
0
0
0
1
2
2
5
7
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 (%)

46
39
41
41
35
41
43
46
55
50
30
24
20
17
15
12
3
7
6
4

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)

3
3
3
5
6
8
7
9
11
12
12
13
11
8
7
6
6
6
6
7

Chance of Frost

Temperature (°C)

3
3
3
4
5
5
6
6
6
6
7
7
6
4
3
3
2
2
2
1

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

96
96
98
100
100
100
98
96
94
82
74
64
70
77
85
86
88
88
88
86

Pressure (mb)

1018
1018
1017
1017
1016
1015
1015
1014
1013
1013
1013
1013
1014
1014
1015
1015
1015
1015
1015
1015

Ozone (du)

337
334
332
332
332
332
341
350
358
367
376
384
388
391
394
395
397
398
400
402

Forecast for Maršov u Úpice, Trutnov District, Czech Republic (50.48,15.98)

Generated: 27/03/26 06:06:41. Forecast: 27/03/26 to 02/04/26. Timezone: UTC+1.00