Clear Outside v1.0 - International Weather Forecasts For Astronomers

Monday 20

Waxing Crescent 14%

07:47

00:48

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
07 OK
08 OK

Sun - Rise: 05:48, Set: 19:58, Transit: 12:54. Moon - Rise: 07:47, Set: 00:48. Civil Dark: 20:34 - 05:13. Nautical Dark: 21:18 - 04:29. Astro Dark: 22:08 - 03:38

Total Clouds (% Sky Obscured)

100
98
97
100
96
96
94
93
93
95
90
90
94
100
93
93
95
93
85
82
79
50
19
32

Low Clouds (% Sky Obscured)

84
93
84
77
85
82
62
67
54
60
78
86
87
92
86
77
75
73
70
69
58
39
19
29

Medium Clouds (% Sky Obscured)

37
90
90
97
87
87
80
79
83
85
81
77
56
99
78
76
77
61
36
38
40
1
0
0

High Clouds (% Sky Obscured)

0
1
0
3
38
45
44
4
7
47
60
60
18
2
0
0
3
3
0
0
0
0
0
0

ISS Passover

Visibility (miles)

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

Precipitation Type

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

Precipitation Probability (%)

12
18
10
41
53
65
57
54
57
40
48
50
51
54
55
45
46
41
35
26
11
4
13
3

Precipitation Amount (mm)

0
0
0
0
0.2
0.4
0.2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

10
11
10
10
11
10
10
9
8
6
5
4
3
2
3
4
7
9
10
11
12
10
11
11

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

80
76
78
78
75
84
93
94
94
93
93
94
96
96
93
93
91
89
89
96
85
86
86
83

Pressure (mb)

1014
1014
1015
1015
1015
1015
1015
1015
1015
1015
1015
1016
1016
1017
1017
1017
1017
1018
1018
1018
1019
1019
1020
1020

Ozone (du)

421
422
423
422
420
420
420
422
423
423
423
422
422
423
420
415
411
410
410
412
415
419
418
417

Tuesday 21

Waxing Crescent 23%

08:57

01:53

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

Sun - Rise: 05:46, Set: 20:00, Transit: 12:54. Moon - Rise: 08:57, Set: 01:53. Civil Dark: 20:35 - 05:11. Nautical Dark: 21:20 - 04:26. Astro Dark: 22:11 - 03:35

Total Clouds (% Sky Obscured)

6
2
28
69
87
73
65
57
61
53
37
7
6
9
5
2
2
34
3
2
55
6
36
69

Low Clouds (% Sky Obscured)

3
1
28
46
31
44
51
51
48
25
23
1
1
1
1
1
1
27
2
2
1
1
1
1

Medium Clouds (% Sky Obscured)

0
0
0
33
70
30
8
0
15
17
15
3
1
6
1
0
0
19
0
0
46
4
36
69

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
1
4
3
3
3
3
0
0
0
0
0
55
0
0
1

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 (%)

4
27
13
20
9
23
24
24
15
8
2
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

80
71
58
49
47
50
46
53
53
58
62
70
75
75
76
79
78
77
78
77
78
77
72
59

Pressure (mb)

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

Ozone (du)

419
416
410
406
404
405
407
412
417
417
414
411
409
410
416
421
423
425
426
428
426
424
422
419

Wednesday 22

Waxing Crescent 34%

08:57

02:38

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

Sun - Rise: 05:44, Set: 20:02, Transit: 12:54. Moon - Rise: 08:57, Set: 02:38. Civil Dark: 20:37 - 05:09. Nautical Dark: 21:22 - 04:24. Astro Dark: 22:13 - 03:32

Total Clouds (% Sky Obscured)

44
22
17
4
4
16
2
66
25
4
13
10
26
33
47
69
60
75
66
77
76
73
70
64

Low Clouds (% Sky Obscured)

1
1
0
0
0
16
0
1
0
0
0
0
1
2
21
18
11
6
3
0
0
0
0
0

Medium Clouds (% Sky Obscured)

44
22
17
0
0
0
0
66
25
4
13
2
16
0
22
31
8
49
55
77
76
73
70
64

High Clouds (% Sky Obscured)

1
2
4
3
3
1
0
11
7
0
2
6
9
16
28
50
56
67
40
32
25
32
22
3

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)

6
7
8
8
9
10
11
11
11
9
6
5
4
4
3
3
3
3
2
2
2
2
1
3

Chance of Frost

Temperature (°C)

7
8
10
11
11
12
12
12
12
11
10
8
6
5
5
4
4
4
3
3
3
3
4
5

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

51
47
43
41
39
39
39
39
38
44
51
57
63
70
73
77
82
86
88
91
88
89
83
78

Pressure (mb)

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

Ozone (du)

420
423
425
428
427
425
421
416
411
406
400
398
394
391
388
385
381
380
377
376
376
377
378
378

Thursday 23

Waxing Crescent 46%

10:18

03:10

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

Sun - Rise: 05:42, Set: 20:03, Transit: 12:54. Moon - Rise: 10:18, Set: 03:10. Civil Dark: 20:39 - 05:07. Nautical Dark: 21:24 - 04:21. Astro Dark: 22:16 - 03:29

Total Clouds (% Sky Obscured)

49
45
45
54
59
63
70
76
78
79
80
78
77
76
58
39
76
49
54
55
54
45
45
60

Low Clouds (% Sky Obscured)

0
0
5
10
17
23
28
35
43
43
55
51
38
35
37
39
64
43
25
18
14
8
1
22

Medium Clouds (% Sky Obscured)

12
2
4
4
4
4
41
75
65
60
60
50
35
30
16
1
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

12
15
10
15
25
30
40
50
45
40
45
45
40
20
1
0
0
1
8
8
10
9
10
13

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
3
6
15
16
5
3
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
5
6
8
9
11
11
11
11
10
9
8
7
5
4
4
4
3
3
4
4
3
2
3

Chance of Frost

Temperature (°C)

8
10
12
13
14
14
14
13
13
12
10
9
8
8
7
6
5
6
5
4
3
4
5
6

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

64
46
37
32
32
35
40
44
51
58
66
73
77
79
81
85
88
82
86
89
88
85
76
58

Pressure (mb)

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

Ozone (du)

378
378
377
376
374
372
373
373
372
373
372
373
373
375
378
377
375
373
374
375
377
381
384
386

Friday 24

First Quarter 57%

11:43

03:32

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

Sun - Rise: 05:41, Set: 20:05, Transit: 12:54. Moon - Rise: 11:43, Set: 03:32. Civil Dark: 20:41 - 05:04. Nautical Dark: 21:26 - 04:19. Astro Dark: 22:19 - 03:25

Total Clouds (% Sky Obscured)

69
58
68
69
72
83
89
93
83
50
55
71
69
69
61
54
46
42
37
31
48
66
83
79

Low Clouds (% Sky Obscured)

40
58
65
60
57
65
72
84
66
41
36
61
62
63
59
54
46
42
37
31
48
63
78
77

Medium Clouds (% Sky Obscured)

3
2
14
22
19
22
32
39
29
17
3
2
1
0
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

21
10
6
3
1
19
20
6
23
1
1
0
0
0
0
0
0
0
0
0
0
0
0
1

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

57
52
46
43
43
46
47
48
51
54
59
69
71
74
78
80
85
89
89
89
89
83
81
76

Pressure (mb)

1017
1017
1017
1016
1015
1014
1014
1013
1013
1013
1013
1013
1014
1014
1014
1014
1013
1013
1013
1012
1012
1012
1012
1012

Ozone (du)

386
385
384
382
381
381
380
380
378
378
378
377
377
376
375
375
374
373
372
371
371
372
374
375

Saturday 25

Waxing Gibbous 68%

13:05

03:48

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
07 Bad
08 Bad

Sun - Rise: 05:39, Set: 20:06, Transit: 12:53. Moon - Rise: 13:05, Set: 03:48. Civil Dark: 20:42 - 05:02. Nautical Dark: 21:28 - 04:16. Astro Dark: 22:22 - 03:22

Total Clouds (% Sky Obscured)

74
71
75
81
87
84
82
80
81
80
80
79
77
76
69
62
55
70
83
96
92
88
86
77

Low Clouds (% Sky Obscured)

73
70
67
64
62
57
53
46
45
45
39
44
49
53
54
54
54
67
80
92
86
80
76
61

Medium Clouds (% Sky Obscured)

0
0
21
43
60
40
20
0
14
30
48
47
46
46
30
15
0
11
22
33
22
12
1
1

High Clouds (% Sky Obscured)

1
1
2
2
3
3
3
14
13
13
12
8
5
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
8
6
4
4
4
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
None
None
None
None
None
Very Light Rain
Snow
Snow
Snow
Snow
Snow

Precipitation Probability (%)

11
13
16
17
17
13
11
8
7
6
9
24
32
35
30
27
25
48
62
73
75
71
67
61

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

9
10
12
12
13
14
14
15
16
15
14
13
14
15
17
17
17
17
15
12
11
11
12
13

Chance of Frost

Temperature (°C)

8
9
10
10
11
12
12
13
13
12
10
9
8
8
7
6
4
3
3
2
2
2
2
2

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

73
69
67
67
68
68
60
53
46
50
54
59
62
65
67
71
73
77
82
86
91
89
89
88

Pressure (mb)

1011
1011
1010
1009
1008
1008
1007
1006
1006
1006
1005
1005
1005
1005
1005
1006
1006
1007
1008
1009
1010
1011
1013
1014

Ozone (du)

377
379
381
381
382
382
384
386
389
390
391
392
401
410
419
428
437
446
446
446
446
441
436
430

Sunday 26

Waxing Gibbous 78%

14:24

04:02

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 OK
22 OK
23 OK
00 OK
01 Good

Sun - Rise: 05:37, Set: 20:08, Transit: 12:53. Moon - Rise: 14:24, Set: 04:02. Civil Dark: 20:44 - 05:00. Nautical Dark: 21:30 - 04:14. Astro Dark: 22:24 - 03:19

Total Clouds (% Sky Obscured)

65
44
51
60
80
89
94
100
93
85
78
58
41
24
22
20
15

Low Clouds (% Sky Obscured)

48
32
22
15
9
13
19
20
20
33
36
33
22
16
17
16
12

Medium Clouds (% Sky Obscured)

2
2
28
54
65
65
65
75
67
54
46
31
15
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

ISS Passover

Visibility (miles)

5
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

Precipitation Type

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

Precipitation Probability (%)

55
41
32
26
19
19
19
15
15
16
15
12
8
0
0
0
0

Precipitation Amount (mm)

0.2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

15
16
17
16
16
16
15
14
13
11
9
8
7
5
4
4
4

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

80
73
68
61
56
49
51
51
52
58
65
73
70
70
70
71
72

Pressure (mb)

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

Ozone (du)

427
423
419
417
414
412
410
407
405
403
401
399
399
400
400
400
400

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

Generated: 20/04/26 09:46:40. Forecast: 20/04/26 to 26/04/26. Timezone: UTC+2.00