Clear Outside v1.0 - International Weather Forecasts For Astronomers

Saturday 20

Waxing Gibbous 91%

16:19

05:06

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
09 Bad

Sun - Rise: 05:48, Set: 20:01, Transit: 12:55. Moon - Rise: 16:19, Set: 05:06. Civil Dark: 20:36 - 05:12. Nautical Dark: 21:21 - 04:27. Astro Dark: 22:12 - 03:36

Total Clouds (% Sky Obscured)

100
100
100
100
99
99
98
99
98
64
91
93
88
82
67
78
90
86
88
81
77
79
91
98

Low Clouds (% Sky Obscured)

95
100
100
100
98
97
97
97
97
46
72
77
72
59
40
55
67
46
44
59
64
73
79
88

Medium Clouds (% Sky Obscured)

99
100
100
100
87
92
82
59
38
18
47
51
52
73
55
65
75
67
77
71
48
23
59
73

High Clouds (% Sky Obscured)

59
74
63
76
87
92
77
12
7
7
14
50
51
7
5
4
4
8
7
7
6
4
4
4

ISS Passover

Visibility (miles)

0
0
0
0
0
0
0
0
0
9
8
1
2
9
9
8
8
8
9
9
8
9
3
3

Fog (%)

0
0
0
1
4
0
10
3
41
0
0
0
1
1
2
1
1
0
0
1
75
71
72
0

Precipitation Type

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

Precipitation Probability (%)

18
34
23
95
95
87
74
64
39
21
7
5
1
1
3
1
4
0
3
2
5
3
13
7

Precipitation Amount (mm)

0
0
0
1.1
1
0.8
0.6
0.6
0.2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

100
100
98
98
98
98
98
98
98
92
98
96
96
96
96
96
96
96
96
96
96
94
91
86

Pressure (mb)

1008
1009
1010
1011
1013
1014
1015
1016
1017
1017
1018
1019
1019
1019
1020
1020
1020
1020
1020
1020
1020
1020
1020
1021

Ozone (du)

432
436
444
450
453
451
447
447
444
442
442
442
441
439
438
438
437
436
437
439
440
439
437
435

Sunday 21

Waxing Gibbous 96%

17:28

05:16

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 OK
05 Bad
06 Bad
07 Bad
08 Bad
09 Bad

Sun - Rise: 05:46, Set: 20:02, Transit: 12:55. Moon - Rise: 17:28, Set: 05:16. Civil Dark: 20:38 - 05:10. Nautical Dark: 21:23 - 04:25. Astro Dark: 22:15 - 03:33

Total Clouds (% Sky Obscured)

89
79
76
89
93
98
100
96
76
49
42
68
61
63
66
69
76
63
32
38
59
70
64
71

Low Clouds (% Sky Obscured)

74
76
74
85
93
98
100
96
72
40
32
59
62
66
63
69
71
51
32
45
59
67
63
72

Medium Clouds (% Sky Obscured)

57
10
3
14
15
30
20
15
6
7
19
20
0
0
5
4
42
28
3
3
5
3
3
9

High Clouds (% Sky Obscured)

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

Fog (%)

0
0
0
0
0
0
0
0
0
0
0
1
15
49
70
77
77
72
77
83
91
58
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 (%)

13
15
15
4
16
16
21
23
16
3
0
0
1
0
0
0
0
0
0
0
5
15
16
4

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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

84
83
77
71
73
71
73
73
75
80
91
92
92
92
92
91
92
94
96
94
96
94
87
81

Pressure (mb)

1021
1021
1021
1021
1021
1020
1020
1020
1021
1021
1022
1022
1023
1023
1023
1023
1023
1022
1023
1023
1023
1022
1022
1022

Ozone (du)

434
432
430
428
429
432
438
442
445
445
444
445
445
445
448
449
449
452
454
456
458
457
456
455

Monday 22

Waxing Gibbous 99%

18:38

05:27

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
09 Bad

Sun - Rise: 05:44, Set: 20:04, Transit: 12:55. Moon - Rise: 18:38, Set: 05:27. Civil Dark: 20:40 - 05:08. Nautical Dark: 21:25 - 04:22. Astro Dark: 22:17 - 03:30

Total Clouds (% Sky Obscured)

82
100
100
98
100
100
95
97
94
74
65
68
44
50
64
87
94
69
99
100
100
100
100
100

Low Clouds (% Sky Obscured)

82
100
100
98
100
100
97
98
94
72
56
46
34
25
19
2
2
2
2
2
3
14
27
43

Medium Clouds (% Sky Obscured)

0
0
0
0
8
21
21
3
6
4
0
30
5
24
53
70
55
60
100
100
100
99
99
100

High Clouds (% Sky Obscured)

0
0
0
1
1
0
1
1
0
0
0
1
28
29
24
53
93
85
86
87
85
79
84
88

ISS Passover

Visibility (miles)

5
6
6
5
1
5
6
8
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
Snow
Snow
Snow
Snow
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

17
6
17
23
29
25
24
15
9
3
0
0
0
0
0
0
0
0
0
0
0
0
2
3

Precipitation Amount (mm)

0
0
0
0.1
0.2
0.1
0.1
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
4
3
3
3
3
4
3
3
2
2
2
2
2
2
2
2
3
3
4
5

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

75
71
67
67
71
71
70
62
61
74
89
91
92
92
92
90
90
90
90
90
91
81
74
70

Pressure (mb)

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

Ozone (du)

453
450
449
450
449
448
443
437
431
431
430
429
428
430
431
435
438
440
440
440
439
441
445
448

Tuesday 23

Waxing Gibbous 100%

19:49

05:40

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
09 Bad

Sun - Rise: 05:42, Set: 20:06, Transit: 12:55. Moon - Rise: 19:49, Set: 05:40. Civil Dark: 20:42 - 05:06. Nautical Dark: 21:27 - 04:20. Astro Dark: 22:20 - 03:26

Total Clouds (% Sky Obscured)

100
99
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

61
79
93
98
97
94
93
92
84
100
99
99
99
99
94
98
95
91
88
92
92
92
92
91

Medium Clouds (% Sky Obscured)

92
95
92
88
91
96
100
100
100
100
99
100
100
100
99
100
89
79
75
82
92
100
100
100

High Clouds (% Sky Obscured)

84
80
89
97
89
18
75
77
75
78
88
59
77
54
90
94
95
96
97
98
99
100
100
100

ISS Passover

Visibility (miles)

9
9
9
9
9
8
7
9
9
9
9
2
0
0
0
0
0
0
0
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
Snow
None
Very Light Rain
Light Rain
Light Rain
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow

Precipitation Probability (%)

4
7
9
8
16
26
33
42
52
64
69
74
80
74
69
69
63
59
51
41
41
49
66
70

Precipitation Amount (mm)

0
0
0
0
0
0
0.1
0
0.3
0.5
0.5
0.6
0.8
0.6
0.5
0.4
0.4
0.3
0.2
0.1
0.1
0.3
0.4
0.4

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

66
62
59
57
60
67
69
73
73
77
84
88
91
94
94
96
98
98
98
96
96
98
98
96

Pressure (mb)

1019
1018
1017
1016
1016
1015
1015
1014
1014
1014
1014
1014
1013
1013
1013
1012
1011
1010
1010
1009
1009
1008
1008
1008

Ozone (du)

446
446
445
442
441
440
440
439
437
436
434
435
436
437
435
431
427
424
423
422
420
418
416
416

Wednesday 24

Full Moon 99%

21:04

05:56

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
09 Bad

Sun - Rise: 05:40, Set: 20:07, Transit: 12:55. Moon - Rise: 21:04, Set: 05:56. Civil Dark: 20:43 - 05:04. Nautical Dark: 21:29 - 04:18. Astro Dark: 22:23 - 03:23

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
100
100
100
99
98
95
91
86
82
84
92
100
100
100

Low Clouds (% Sky Obscured)

91
91
93
93
94
95
96
97
97
98
95
91
89
84
80
74
63
51
30
36
55
74
83
91

Medium Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
99
98
96
87
80
71
72
70
64
76
89
100
98
95

High Clouds (% Sky Obscured)

95
97
100
100
100
100
100
100
100
100
99
99
98
97
95
93
91
90
89
90
94
100
88
63

ISS Passover

Visibility (miles)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
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

Light Rain
Light Rain
Very Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow

Precipitation Probability (%)

75
75
69
76
91
95
95
95
95
95
95
95
95
92
86
83
81
83
85
84
84
83
81
79

Precipitation Amount (mm)

0.4
0.5
0.3
0.4
0.7
0.8
0.7
0.9
0.9
1
0.9
1
0.9
0.9
0.7
0.7
0.5
0.5
0.6
0.6
0.6
0.5
0.5
0.5

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

96
98
98
98
100
100
98
100
98
100
98
100
100
100
100
100
98
98
98
100
98
98
100
98

Pressure (mb)

1008
1007
1007
1006
1006
1006
1006
1006
1006
1006
1007
1007
1007
1007
1007
1007
1007
1007
1008
1008
1008
1008
1009
1009

Ozone (du)

415
415
415
416
417
420
422
422
421
422
421
419
418
419
422
421
422
422
422
422
421
421
420
421

Thursday 25

Waning Gibbous 96%

22:21

06:18

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 Bad
09 Bad

Sun - Rise: 05:38, Set: 20:09, Transit: 12:54. Moon - Rise: 22:21, Set: 06:18. Civil Dark: 20:45 - 05:02. Nautical Dark: 21:31 - 04:15. Astro Dark: 22:26 - 03:20

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
99
98
96
96
97
98
86
75
65
66
64
56
52
49
43
48
51

Low Clouds (% Sky Obscured)

100
100
100
100
100
100
99
89
80
72
73
73
72
72
72
72
66
60
52
47
44
40
44
48

Medium Clouds (% Sky Obscured)

93
96
98
100
99
99
98
93
87
81
86
90
94
71
56
44
33
20
5
4
4
3
5
8

High Clouds (% Sky Obscured)

30
24
18
31
18
9
20
5
0
0
5
5
5
5
13
20
22
15
3
2
1
0
0
0

ISS Passover

Visibility (miles)

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

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
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

78
68
58
49
42
34
24
22
20
18
17
16
9
15
12
0
0
0
0
1
1
0
13
20

Precipitation Amount (mm)

0.5
0.4
0.3
0.2
0.2
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
4
4
3
3
2
2
2
3
3
3
3
2
3
3
3
3
3
2
3

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

98
98
98
98
98
96
96
93
94
96
96
96
96
92
94
94
94
94
94
96
96
94
94
91

Pressure (mb)

1009
1010
1010
1010
1010
1010
1010
1010
1010
1011
1011
1012
1012
1013
1013
1013
1013
1013
1013
1013
1013
1013
1013
1013

Ozone (du)

421
422
421
420
420
422
424
426
425
425
425
425
425
425
426
426
427
429
430
432
431
430
429
430

Friday 26

Waning Gibbous 91%

23:38

06:49

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 Bad
01 Bad
02 Bad
03 Bad
04 Bad
05 Bad
06 Bad
07 Bad

Sun - Rise: 05:36, Set: 20:10, Transit: 12:54. Moon - Rise: 23:38, Set: 06:49. Civil Dark: 20:47 - 05:00. Nautical Dark: 21:33 - 04:13. Astro Dark: 22:28 - 03:17

Total Clouds (% Sky Obscured)

54
66
78
89
89
90
92
76
60
42
39
35
31
38
46
56
56
58
56
56
57
61

Low Clouds (% Sky Obscured)

54
65
76
86
78
71
65
55
44
33
29
25
21
21
18
16
15
12
9
21
35
51

Medium Clouds (% Sky Obscured)

11
7
4
0
23
47
70
50
29
8
7
5
3
7
11
18
18
16
13
8
7
7

High Clouds (% Sky Obscured)

0
0
1
1
7
18
29
28
15
3
3
2
1
1
0
0
1
2
2
5
7
9

ISS Passover

Visibility (miles)

5
2
5
7
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

Precipitation Type

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

Precipitation Probability (%)

26
33
38
40
38
31
27
26
22
15
12
7
0
0
0
0
0
0
0
0
0
0

Precipitation Amount (mm)

0
0.1
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
4
5
5
4
4
3
2
3
3
3
3
3
4
4
4
4
3
3
3

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

89
86
86
83
82
80
80
79
83
88
93
93
94
96
96
96
98
98
96
96
94
93

Pressure (mb)

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

Ozone (du)

431
431
430
428
427
427
427
427
428
429
430
429
428
427
427
427
427
425
423
421
421
422

Forecast for Pec pod Sněžkou, Trutnov District, Czech Republic (50.69,15.73)

Generated: 20/04/24 10:41:17. Forecast: 20/04/24 to 26/04/24. Timezone: UTC+2.00