Clear Outside v1.0 - International Weather Forecasts For Astronomers

Wednesday 13

Waning Crescent 9%

03:36

17:49

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
10 Bad
11 Bad
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad
17 Bad
18 Bad

Sun - Rise: 05:08, Set: 20:34, Transit: 12:52. Moon - Rise: 03:36, Set: 17:49. Civil Dark: 21:14 - 04:28. Nautical Dark: 22:07 - 03:35. Astro Dark: 23:19 - 02:21

Total Clouds (% Sky Obscured)

83
85
69
75
73
67
61
87
83
90
88
72
70
85
76
92
91
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

55
46
60
65
66
59
55
73
82
73
82
60
58
64
60
73
57
66
28
54
85
62
69
41

Medium Clouds (% Sky Obscured)

77
47
39
75
37
27
34
46
66
65
73
52
50
68
35
20
44
100
100
99
93
97
100
100

High Clouds (% Sky Obscured)

3
3
3
4
3
3
5
65
3
30
65
61
60
49
29
43
47
25
50
91
99
91
100
100

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
8
9
7
9
9
9
8
8
9
9
5
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
Very Light Rain
Very Light Rain
None
None
None
None
Light Rain
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

35
18
4
13
15
2
12
20
47
46
32
29
37
40
53
39
47
41
10
7
15
34
32
50

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0.3
0.3
0
0
0
0
0.4
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

8
6
4
4
4
4
5
5
6
5
7
9
11
13
15
17
15
16
15
14
13
12
10
9

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

82
87
90
91
93
94
94
94
93
94
90
91
90
90
87
77
76
73
65
58
55
56
60
62

Pressure (mb)

1004
1004
1004
1004
1004
1003
1003
1003
1002
1002
1001
1002
1002
1002
1002
1002
1002
1001
1001
1001
1000
1000
1000
1000

Ozone (du)

395
398
399
404
408
409
408
405
407
408
409
412
414
413
412
410
408
404
400
400
398
398
398
396

Thursday 14

Waning Crescent 3%

03:53

No Set

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
10 Bad
11 Bad
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad
17 Bad
18 Bad

Sun - Rise: 05:07, Set: 20:36, Transit: 12:52. Moon - Rise: 03:53, Set: No Set. Civil Dark: 21:15 - 04:27. Nautical Dark: 22:09 - 03:33. Astro Dark: 23:23 - 02:17

Total Clouds (% Sky Obscured)

100
100
100
100
100
98
98
100
100
100
100
100
100
100
100
100
100
100
100
100
99
100
100
64

Low Clouds (% Sky Obscured)

16
16
8
17
13
47
53
62
38
25
40
25
25
48
56
66
62
100
91
91
82
55
45
43

Medium Clouds (% Sky Obscured)

100
100
100
100
100
86
79
80
77
79
77
87
100
100
100
100
100
100
90
62
53
49
95
33

High Clouds (% Sky Obscured)

100
96
93
100
100
94
92
100
100
99
100
100
100
100
100
100
100
100
100
5
60
100
91
7

ISS Passover

Visibility (miles)

8
8
9
9
9
9
9
9
9
9
9
9
9
7
9
6
9
3
7
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
Very Light Rain
Very Light Rain
Very Light Rain
Light Rain
Light Rain
Light Rain
Very Light Rain
Very Light Rain
None
None
None

Precipitation Probability (%)

33
3
4
8
12
11
9
6
8
8
15
31
45
56
56
72
93
93
70
58
54
33
14
7

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0.3
0.2
0.3
0.6
0.9
0.4
0.2
0.3
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

11
10
9
8
7
7
7
7
6
6
6
6
6
8
8
8
8
8
9
9
9
9
9
10

Feels Like (°C)

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

Dew Point (°C)

8
8
7
6
6
5
6
6
6
5
5
5
5
7
7
7
7
7
8
8
8
8
8
8

Relative Humidity (%)

80
85
90
91
88
88
91
94
94
94
94
91
91
93
95
93
95
93
93
95
93
90
91
88

Pressure (mb)

1001
1001
1001
1001
1001
1001
1001
1001
1001
1001
1001
1001
1001
1001
1001
1002
1002
1002
1002
1002
1002
1002
1002
1002

Ozone (du)

400
404
407
407
404
404
402
400
398
399
401
403
405
406
407
407
409
408
406
404
403
403
405
406

Friday 15

Waning Crescent 0%

04:16

19:19

19 OK
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
10 Bad
11 Bad
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad
17 Bad
18 Bad

Sun - Rise: 05:06, Set: 20:37, Transit: 12:52. Moon - Rise: 04:16, Set: 19:19. Civil Dark: 21:17 - 04:25. Nautical Dark: 22:11 - 03:31. Astro Dark: 23:27 - 02:13

Total Clouds (% Sky Obscured)

33
41
67
100
98
100
100
100
100
81
86
100
100
100
100
99
100
98
87
98
77
100
100
100

Low Clouds (% Sky Obscured)

19
22
13
15
10
40
48
52
54
60
59
54
42
46
64
82
77
81
51
77
45
61
56
12

Medium Clouds (% Sky Obscured)

6
20
4
28
71
72
37
50
51
47
47
35
19
100
97
87
100
90
87
68
57
17
17
22

High Clouds (% Sky Obscured)

1
25
66
100
95
100
100
100
100
77
78
100
100
100
94
54
3
3
3
60
33
100
100
100

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
8
9
8
9
9
6
8
7
8
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
Very Light Rain
Light Rain
Very Light Rain
Very Light Rain
None
Very Light Rain
Very Light Rain
Very Light Rain
Very Light Rain
None
None

Precipitation Probability (%)

3
0
0
0
2
4
10
28
37
39
34
35
51
59
70
63
61
62
69
62
69
69
60
50

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

88
91
96
96
96
96
94
96
94
96
94
93
91
91
90
90
81
79
69
65
70
69
70
75

Pressure (mb)

1002
1003
1003
1004
1004
1003
1003
1004
1004
1004
1004
1005
1005
1005
1005
1006
1006
1006
1006
1006
1007
1007
1007
1008

Ozone (du)

407
407
406
407
409
408
410
412
414
416
418
419
419
416
415
418
416
413
408
407
406
401
401
402

Saturday 16

New Moon 1%

04:47

20:52

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
10 Bad
11 Bad
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad
17 Bad
18 Bad

Sun - Rise: 05:04, Set: 20:38, Transit: 12:52. Moon - Rise: 04:47, Set: 20:52. Civil Dark: 21:19 - 04:24. Nautical Dark: 22:13 - 03:29. Astro Dark: 23:31 - 02:09

Total Clouds (% Sky Obscured)

100
97
93
87
91
96
100
100
100
100
100
100
100
100
100
100
100
100
99
100
100
100
100
100

Low Clouds (% Sky Obscured)

3
3
2
2
2
1
0
0
0
0
0
0
0
17
33
51
47
43
39
48
57
39
46
32

Medium Clouds (% Sky Obscured)

21
17
16
87
91
96
99
72
100
100
93
83
75
72
69
62
65
87
99
100
99
98
99
100

High Clouds (% Sky Obscured)

100
78
49
24
47
75
100
100
100
100
100
100
100
100
100
100
100
100
99
100
100
100
100
100

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 (%)

20
19
18
5
3
4
2
0
0
0
0
0
0
0
0
0
3
4
3
2
8
3
13
16

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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

80
85
95
95
94
93
88
88
91
91
90
88
82
74
66
62
56
51
49
49
50
55
57
62

Pressure (mb)

1008
1009
1010
1011
1012
1012
1012
1013
1013
1013
1014
1014
1015
1015
1015
1015
1015
1015
1015
1014
1014
1015
1015
1015

Ozone (du)

403
403
403
403
404
401
401
401
401
402
402
402
401
399
397
397
396
394
393
392
391
390
388
388

Sunday 17

Waxing Crescent 5%

05:33

22:22

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
10 Bad
11 Bad
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad
17 Bad
18 Bad

Sun - Rise: 05:03, Set: 20:40, Transit: 12:52. Moon - Rise: 05:33, Set: 22:22. Civil Dark: 21:20 - 04:22. Nautical Dark: 22:15 - 03:27. Astro Dark: 23:35 - 02:05

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
99
99
99
99
100
100
100
94
95
97
95
92
91
89
88
87
87
85

Low Clouds (% Sky Obscured)

29
33
35
38
43
47
65
77
84
89
84
81
78
73
72
69
68
67
66
60
57
56
55
50

Medium Clouds (% Sky Obscured)

100
100
100
99
98
96
95
96
99
97
99
99
88
77
83
90
85
84
87
87
87
87
87
85

High Clouds (% Sky Obscured)

100
100
100
100
92
83
78
67
41
14
36
20
15
6
3
1
2
23
43
59
60
64
66
58

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

Precipitation Probability (%)

16
33
39
38
47
54
54
52
50
44
49
53
52
33
28
25
21
13
4
6
5
2
3
2

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

12
11
10
9
8
8
8
8
8
7
8
8
9
9
9
9
9
9
10
11
11
12
13
12

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

64
71
72
74
75
77
77
77
78
77
75
74
75
81
82
84
87
82
78
73
70
64
60
64

Pressure (mb)

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

Ozone (du)

388
388
389
388
385
381
380
379
379
378
377
377
377
377
377
378
378
377
376
375
374
372
371
370

Monday 18

Waxing Crescent 11%

06:38

23:37

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

Sun - Rise: 05:02, Set: 20:41, Transit: 12:52. Moon - Rise: 06:38, Set: 23:37. Civil Dark: 21:22 - 04:21. Nautical Dark: 22:17 - 03:25. Astro Dark: 23:39 - 02:01

Total Clouds (% Sky Obscured)

84
75
65
58
62
71
76
69
67
62
52
47
39
51
63
73
65
57
49
58
71
82
68
53

Low Clouds (% Sky Obscured)

45
50
50
50
55
59
64
62
60
60
40
21
1
11
20
30
29
28
27
36
44
52
46
41

Medium Clouds (% Sky Obscured)

84
75
47
28
26
29
33
24
15
5
6
4
2
26
50
73
65
57
49
58
61
48
33
16

High Clouds (% Sky Obscured)

30
15
5
5
5
0
5
5
4
16
15
13
11
11
13
12
2
1
0
1
1
2
1
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 (%)

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

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
3
3
3
3
4
4
4
3
3
2
2
2
4
5
7
7
8
8
8
8
9
8

Chance of Frost

Temperature (°C)

11
10
10
9
8
7
6
6
6
5
5
7
9
11
13
14
15
16
16
17
17
17
17
16

Feels Like (°C)

10
11
7
6
6
6
6
5
4
4
3
3
3
3
10
11
11
12
11
12
15
16
15
15

Dew Point (°C)

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

Relative Humidity (%)

67
73
72
70
69
66
64
60
60
59
57
57
57
56
53
50
46
46
44
44
46
49
52
57

Pressure (mb)

1016
1016
1017
1017
1017
1018
1018
1018
1018
1018
1018
1018
1018
1018
1017
1017
1017
1017
1017
1017
1017
1017
1017
1017

Ozone (du)

370
370
370
370
371
370
369
368
368
368
368
367
367
367
366
365
364
366
367
368
367
366
365
365

Tuesday 19

Waxing Crescent 20%

07:58

00:32

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

Sun - Rise: 05:00, Set: 20:43, Transit: 12:52. Moon - Rise: 07:58, Set: 00:32. Civil Dark: 21:24 - 04:19. Nautical Dark: 22:20 - 03:23. Astro Dark: 23:44 - 01:56

Total Clouds (% Sky Obscured)

39
27
16
3
16
30
55
64
70
76
67
55
44
50
56
61
65
65
63

Low Clouds (% Sky Obscured)

36
25
13
1
10
18
27
30
31
34
24
11
0
18
37
52
50
52
51

Medium Clouds (% Sky Obscured)

0
0
0
0
10
19
23
29
35
47
43
36
32
41
51
60
58
56
63

High Clouds (% Sky Obscured)

0
0
0
0
13
26
39
57
70
76
67
50
27
50
56
61
65
65
63

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 (%)

4
4
3
0
0
0
0
0
0
0
0
0
0
1
2
3
12
15
15

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)

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

Chance of Frost

Temperature (°C)

14
13
12
10
8
8
7
7
7
6
6
8
10
12
14
15
17
17
18

Feels Like (°C)

15
15
11
10
10
10
9
8
6
7
7
7
6
7
13
14
14
15
16

Dew Point (°C)

8
8
7
6
5
5
5
5
5
5
5
5
6
7
7
6
6
6
7

Relative Humidity (%)

63
69
73
78
84
84
85
87
88
88
90
82
76
70
62
55
49
49
49

Pressure (mb)

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

Ozone (du)

366
367
366
366
365
365
364
363
363
363
362
364
366
368
368
368
367
367
366

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

Generated: 13/05/26 19:27:21. Forecast: 13/05/26 to 19/05/26. Timezone: UTC+2.00