Clear Outside v1.0 - International Weather Forecasts For Astronomers

Friday 10

Third Quarter 50%

03:59

11:01

07 OK
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: 06:09, Set: 19:42, Transit: 12:57. Moon - Rise: 03:59, Set: 11:01. Civil Dark: 20:16 - 05:35. Nautical Dark: 20:58 - 04:53. Astro Dark: 21:44 - 04:07

Total Clouds (% Sky Obscured)

21
48
59
68
95
100
100
100
100
100
91
99
88
97
91
96
86
84
92
81
80
88
83
87

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
6
10
11
11
14
78
80
96
85
89
74
73
84
77
74
85
80
85

Medium Clouds (% Sky Obscured)

21
48
59
68
93
99
100
100
100
96
69
79
64
76
54
43
43
28
27
0
0
0
0
0

High Clouds (% Sky Obscured)

21
48
59
68
76
100
100
100
100
58
36
34
0
0
0
0
0
0
0
0
0
0
0
0

ISS Passover

Visibility (miles)

9
9
9
9
9
3
3
9
9
9
9
9
0
0
0
0
0
0
5
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
Snow
Snow
Snow
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

0
1
1
0
5
24
5
1
1
1
5
27
36
37
34
23
9
15
5
4
3
1
0
0

Precipitation Amount (mm)

0
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

Wind Speed/Direction (mph)

4
3
1
4
7
7
8
7
7
6
6
7
7
4
3
2
2
1
1
1
1
1
2
2

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-7
-5
-3
-1
0
0
0
1
1
2
2
2
-0
1
0
0
-0
0
-0
-1
-1
-1
-2
-2

Dew Point (°C)

-10
-9
-9
-9
-8
-8
-6
-5
-5
-5
-4
-1
3
3
3
2
2
2
1
0
-0
-1
-1
-1

Relative Humidity (%)

65
57
49
41
39
39
46
48
47
47
50
61
96
96
98
98
98
98
91
88
86
86
86
84

Pressure (mb)

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

Ozone (du)

400
402
401
400
402
404
407
411
414
419
422
424
425
427
429
428
426
424
421
417
412
410
406
403

Saturday 11

Waning Crescent 40%

04:20

12:15

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

Sun - Rise: 06:07, Set: 19:44, Transit: 12:57. Moon - Rise: 04:20, Set: 12:15. Civil Dark: 20:18 - 05:33. Nautical Dark: 21:00 - 04:51. Astro Dark: 21:46 - 04:04

Total Clouds (% Sky Obscured)

85
62
32
40
78
77
72
79
82
74
47
19
2
2
2
4
4
5
6
10
30
82
21
18

Low Clouds (% Sky Obscured)

80
62
32
36
73
72
67
76
79
71
46
18
1
1
1
1
1
1
0
0
0
0
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
2

High Clouds (% Sky Obscured)

0
1
6
4
1
0
3
4
3
2
0
0
0
0
0
3
3
3
6
9
27
79
17
16

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

Chance of Frost

Temperature (°C)

1
2
4
5
7
8
9
10
10
10
10
9
8
5
4
4
3
3
2
2
1
1
0
0

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

80
77
66
58
52
46
42
40
39
39
42
48
56
64
64
66
65
67
66
68
67
67
69
70

Pressure (mb)

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

Ozone (du)

398
395
392
389
386
384
382
380
378
378
378
377
375
375
375
375
374
374
373
372
372
374
373
370

Sunday 12

Waning Crescent 30%

04:36

13:31

07 OK
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: 06:05, Set: 19:46, Transit: 12:56. Moon - Rise: 04:36, Set: 13:31. Civil Dark: 20:20 - 05:30. Nautical Dark: 21:02 - 04:48. Astro Dark: 21:48 - 04:01

Total Clouds (% Sky Obscured)

45
68
93
88
84
87
93
96
99
96
97
96
100
99
100
100
100
99
97
97
97
96
97
98

Low Clouds (% Sky Obscured)

0
0
0
0
0
1
0
1
1
1
3
4
13
40
57
70
60
50
45
42
55
64
77
87

Medium Clouds (% Sky Obscured)

39
44
93
80
84
83
91
94
99
95
96
96
99
98
100
100
97
84
95
93
85
86
93
62

High Clouds (% Sky Obscured)

21
27
32
53
22
60
60
40
27
7
46
10
67
82
71
50
77
84
89
86
81
71
58
47

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
1
4
18
30
20
8
7
7
4
7
9

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

Chance of Frost

Temperature (°C)

1
3
6
8
9
11
11
12
12
12
12
12
11
9
9
9
8
8
8
8
7
7
7
7

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

66
55
48
47
43
41
40
40
40
40
42
48
59
62
62
63
63
65
68
68
69
69
69
69

Pressure (mb)

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

Ozone (du)

369
366
365
364
363
364
364
365
366
368
370
372
373
372
369
369
366
365
364
365
365
365
365
365

Monday 13

Waning Crescent 21%

04:50

14:49

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: 06:03, Set: 19:47, Transit: 12:56. Moon - Rise: 04:50, Set: 14:49. Civil Dark: 20:22 - 05:28. Nautical Dark: 21:04 - 04:46. Astro Dark: 21:51 - 03:58

Total Clouds (% Sky Obscured)

99
98
96
94
93
94
95
96
97
98
99
99
100
100
100
100
100
100
100
97
94
92
94
97

Low Clouds (% Sky Obscured)

97
94
90
85
87
90
92
81
71
60
52
47
42
36
31
25
25
25
25
21
30
30
36
46

Medium Clouds (% Sky Obscured)

34
19
27
35
49
78
95
96
97
98
90
93
99
99
99
100
100
100
100
95
90
85
90
94

High Clouds (% Sky Obscured)

35
43
49
62
57
57
59
51
42
43
63
80
100
100
100
100
100
100
100
73
46
19
46
73

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 (%)

9
11
9
2
2
1
0
0
0
0
2
2
1
3
4
4
6
14
1
6
9
12
24
25

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

Chance of Frost

Temperature (°C)

8
8
9
9
10
10
11
11
12
12
13
12
12
11
11
10
10
10
10
9
9
8
8
8

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

69
67
62
62
62
62
64
65
68
66
62
64
67
67
68
69
71
61
59
60
64
67
71
74

Pressure (mb)

1014
1014
1014
1014
1014
1013
1013
1012
1012
1011
1011
1011
1011
1011
1011
1011
1012
1011
1011
1011
1011
1011
1011
1012

Ozone (du)

366
367
366
364
363
364
363
365
368
370
372
374
375
374
375
375
375
374
375
373
373
374
376
378

Tuesday 14

Waning Crescent 13%

05:04

16:09

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: 06:01, Set: 19:49, Transit: 12:56. Moon - Rise: 05:04, Set: 16:09. Civil Dark: 20:23 - 05:26. Nautical Dark: 21:06 - 04:43. Astro Dark: 21:53 - 03:56

Total Clouds (% Sky Obscured)

100
100
100
100
99
99
98
99
99
100
100
100
100
91
94
99
99
100
100
100
100
100
99
98

Low Clouds (% Sky Obscured)

57
59
63
65
67
70
72
81
90
98
99
99
100
45
40
30
30
30
30
30
35
40
44
43

Medium Clouds (% Sky Obscured)

99
97
98
97
94
94
93
97
98
95
77
66
60
48
51
56
52
49
52
62
73
84
80
76

High Clouds (% Sky Obscured)

100
100
100
100
84
66
54
69
83
96
82
85
72
28
55
83
87
61
56
42
44
42
40
43

ISS Passover

Visibility (miles)

9
9
9
9
9
8
9
8
7
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
Very Light Rain
None
None
Very Light Rain
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

31
27
32
46
48
40
44
56
46
34
39
44
48
7
7
4
10
12
10
12
12
9
10
8

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

74
74
72
65
68
74
76
83
87
88
87
84
81
81
81
82
82
84
85
87
87
85
84
79

Pressure (mb)

1012
1012
1012
1012
1013
1013
1013
1013
1013
1014
1014
1014
1015
1015
1018
1018
1019
1019
1019
1019
1020
1020
1020
1021

Ozone (du)

378
380
380
381
382
384
384
382
380
380
380
379
378
376
376
375
375
374
374
374
374
374
374
375

Wednesday 15

Waning Crescent 6%

05:18

17:30

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 OK
23 OK
00 OK
01 OK
02 OK
03 OK
04 OK
05 OK
06 OK

Sun - Rise: 05:58, Set: 19:50, Transit: 12:56. Moon - Rise: 05:18, Set: 17:30. Civil Dark: 20:25 - 05:24. Nautical Dark: 21:08 - 04:41. Astro Dark: 21:55 - 03:53

Total Clouds (% Sky Obscured)

97
95
93
91
89
88
87
87
86
86
82
75
69
65
57
48
46
44
42
37
40
39
34
29

Low Clouds (% Sky Obscured)

43
51
55
59
58
57
55
54
53
48
47
47
41
38
35
31
25
18
11
12
13
15
13
10

Medium Clouds (% Sky Obscured)

75
67
73
72
75
75
75
78
80
82
72
67
61
53
45
37
37
37
38
37
39
37
34
29

High Clouds (% Sky Obscured)

45
32
17
0
0
0
0
0
0
2
27
52
69
65
57
48
46
44
42
37
40
39
34
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
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 (%)

2
3
3
2
5
8
5
9
9
4
9
8
7
8
2
0
1
1
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
7
8
9
10
10
10
10
9
9
9
8
8
7
7
6
6
5
4
4
4
4
3

Chance of Frost

Temperature (°C)

8
8
10
11
13
13
14
15
14
14
14
13
11
10
9
8
8
8
7
7
6
6
5
6

Feels Like (°C)

5
6
6
6
7
7
8
8
11
10
10
10
10
11
6
7
7
7
7
6
5
4
5
4

Dew Point (°C)

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

Relative Humidity (%)

75
73
65
57
51
47
44
41
39
39
38
45
53
61
63
64
67
68
69
70
71
71
72
68

Pressure (mb)

1021
1021
1021
1021
1022
1022
1021
1021
1022
1022
1022
1022
1023
1023
1024
1024
1025
1025
1025
1025
1025
1025
1025
1025

Ozone (du)

375
376
375
375
375
375
375
376
377
378
379
378
378
377
377
377
377
378
378
378
379
381
382
388

Thursday 16

Waning Crescent 2%

05:33

18:54

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

Sun - Rise: 05:56, Set: 19:52, Transit: 12:55. Moon - Rise: 05:33, Set: 18:54. Civil Dark: 20:27 - 05:22. Nautical Dark: 21:10 - 04:38. Astro Dark: 21:58 - 03:50

Total Clouds (% Sky Obscured)

21
22
27
41
40
44
55
53
48
43
41
37
35
34
36
42
45
52
65

Low Clouds (% Sky Obscured)

5
15
23
35
37
37
37
37
35
35
37
33
33
20
12
3
3
3
3

Medium Clouds (% Sky Obscured)

21
22
27
41
40
42
32
29
25
25
16
8
0
0
0
0
1
2
2

High Clouds (% Sky Obscured)

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

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
None
None

Precipitation Probability (%)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

7
7
9
11
13
14
14
15
15
15
14
13
11
10
9
8
7
6
6

Feels Like (°C)

3
3
7
8
9
10
10
11
14
13
12
13
13
13
7
6
6
5
5

Dew Point (°C)

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

Relative Humidity (%)

65
62
54
46
40
38
36
35
36
37
39
45
52
62
61
60
58
58
57

Pressure (mb)

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

Ozone (du)

393
398
398
397
397
395
393
390
388
386
383
380
377
374
374
373
372
372
372

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

Generated: 10/04/26 07:49:16. Forecast: 10/04/26 to 16/04/26. Timezone: UTC+2.00