Clear Outside v1.0 - International Weather Forecasts For Astronomers

Friday 17

New Moon 0%

06:00

20:28

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

Sun - Rise: 06:01, Set: 19:59, Transit: 13:01. Moon - Rise: 06:00, Set: 20:28. Civil Dark: 20:34 - 05:27. Nautical Dark: 21:16 - 04:44. Astro Dark: 22:04 - 03:55

Total Clouds (% Sky Obscured)

37
27
32
51
69
58
52
26
27
57
75
33
94
100
100
95
79
74
56
70
77
98
88
82

Low Clouds (% Sky Obscured)

33
27
32
39
39
34
11
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

14
25
0
0
9
20
15
24
22
4
23
33
25
34
68
57
45
29
27
26
21
66
56
70

High Clouds (% Sky Obscured)

3
0
4
4
18
7
1
7
6
57
59
8
90
99
91
71
56
59
40
58
70
58
66
55

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
2
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)

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

Chance of Frost

Temperature (°C)

17
18
19
19
19
19
19
19
18
16
14
14
13
11
10
10
9
9
8
7
7
9
12
14

Feels Like (°C)

16
18
18
17
17
16
16
16
16
14
11
12
12
9
8
8
7
7
6
5
6
8
10
12

Dew Point (°C)

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

Relative Humidity (%)

60
51
44
41
39
38
39
43
49
53
53
56
60
66
72
77
78
77
77
74
73
63
57
50

Pressure (mb)

1023
1022
1022
1022
1021
1021
1021
1021
1021
1021
1022
1022
1023
1023
1023
1023
1023
1023
1023
1023
1023
1023
1023
1023

Ozone (du)

369
369
369
370
372
370
370
368
366
365
363
360
359
359
358
358
357
356
355
353
354
355
355
356

Saturday 18

Waxing Crescent 2%

06:26

21:59

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

Sun - Rise: 05:59, Set: 20:01, Transit: 13:01. Moon - Rise: 06:26, Set: 21:59. Civil Dark: 20:35 - 05:25. Nautical Dark: 21:18 - 04:41. Astro Dark: 22:07 - 03:52

Total Clouds (% Sky Obscured)

72
33
37
23
46
55
48
90
90
99
89
92
90
97
94
90
99
100
99
100
100
100
100
100

Low Clouds (% Sky Obscured)

0
0
0
0
1
1
8
27
25
25
23
23
4
9
3
14
20
20
2
18
24
61
67
66

Medium Clouds (% Sky Obscured)

65
33
37
20
20
38
42
44
55
35
40
49
79
94
90
84
83
99
98
100
100
100
100
100

High Clouds (% Sky Obscured)

37
10
6
4
32
36
6
17
5
34
38
53
51
25
34
57
91
100
96
100
100
76
100
100

ISS Passover

Visibility (miles)

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

Precipitation Probability (%)

0
0
0
0
0
0
2
2
0
0
0
0
2
0
0
3
32
21
8
9
29
38
44
65

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.3
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

16
17
18
19
20
20
20
19
18
17
15
14
14
13
13
12
12
12
11
10
11
12
12
13

Feels Like (°C)

14
16
19
19
19
19
18
18
17
15
13
12
11
11
10
11
10
11
10
9
10
11
12
12

Dew Point (°C)

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

Relative Humidity (%)

47
44
40
38
37
36
37
40
46
48
48
50
52
59
63
67
71
77
80
78
77
75
71
66

Pressure (mb)

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

Ozone (du)

356
356
356
356
354
354
354
354
355
356
359
360
361
362
364
364
364
365
366
368
369
372
373
374

Sunday 19

Waxing Crescent 6%

07:03

23:30

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

Sun - Rise: 05:57, Set: 20:02, Transit: 13:01. Moon - Rise: 07:03, Set: 23:30. Civil Dark: 20:37 - 05:23. Nautical Dark: 21:20 - 04:39. Astro Dark: 22:09 - 03:49

Total Clouds (% Sky Obscured)

100
100
100
100
99
94
91
94
91
93
42
19
45
61
68
41
36
38
74
36
46
53
36
91

Low Clouds (% Sky Obscured)

58
55
89
78
82
83
70
92
74
87
42
19
31
14
15
12
2
20
57
36
45
48
35
66

Medium Clouds (% Sky Obscured)

100
88
100
99
50
67
38
22
21
2
0
0
0
0
0
9
30
25
30
35
40
37
33
59

High Clouds (% Sky Obscured)

100
100
100
100
27
4
0
0
0
0
0
0
19
20
20
20
20
14
8
15
25
20
8
0

ISS Passover

Visibility (miles)

9
9
6
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

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

Precipitation Probability (%)

95
92
74
57
95
69
26
12
9
1
0
1
0
10
2
0
1
1
2
3
11
6
16
11

Precipitation Amount (mm)

0.4
0.4
0.3
0
0.8
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

13
13
14
15
16
15
14
14
13
12
10
10
9
8
8
7
7
6
6
6
7
8
9
10

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

64
79
83
83
74
67
68
70
66
66
65
73
78
82
85
87
88
90
90
90
87
77
67
60

Pressure (mb)

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

Ozone (du)

375
376
378
381
385
389
393
395
398
403
408
413
415
418
421
420
420
419
419
418
416
413
411
410

Monday 20

Waxing Crescent 14%

07:56

00:52

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
10 Bad

Sun - Rise: 05:55, Set: 20:04, Transit: 13:01. Moon - Rise: 07:56, Set: 00:52. Civil Dark: 20:39 - 05:20. Nautical Dark: 21:22 - 04:37. Astro Dark: 22:12 - 03:47

Total Clouds (% Sky Obscured)

92
93
94
92
91
90
92
94
97
92
86
78
80
70
54
55
56
54
59
61
62
62
63
63

Low Clouds (% Sky Obscured)

74
72
77
77
74
74
77
80
84
71
60
35
49
47
41
47
51
51
56
58
56
57
60
58

Medium Clouds (% Sky Obscured)

40
71
67
45
33
37
60
82
88
76
65
44
54
52
54
49
42
35
33
35
38
41
48
56

High Clouds (% Sky Obscured)

1
51
55
3
3
3
9
15
3
5
26
3
3
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
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 (%)

21
27
33
37
37
45
45
40
32
33
33
24
29
26
15
21
23
17
25
28
31
31
31
29

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
12
12
11
9
8
7
6
7
6
3
1
1
2
3
3
3
3
3
3
4
4
5

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

58
66
60
68
83
90
90
91
91
87
93
93
93
93
93
94
94
96
93
89
85
72
63
55

Pressure (mb)

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

Ozone (du)

409
407
406
405
404
404
404
404
405
405
407
408
410
413
412
410
407
405
405
407
410
412
414
414

Tuesday 21

Waxing Crescent 23%

09:06

01:56

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

Sun - Rise: 05:53, Set: 20:05, Transit: 13:00. Moon - Rise: 09:06, Set: 01:56. Civil Dark: 20:40 - 05:18. Nautical Dark: 21:24 - 04:34. Astro Dark: 22:14 - 03:44

Total Clouds (% Sky Obscured)

68
71
73
79
83
75
68
40
23
15
13
30
59
60
60
67
69
75
74
78
73
82
89
100

Low Clouds (% Sky Obscured)

52
50
49
50
47
34
37
15
4
2
2
8
31
26
20
20
18
15
12
9
6
16
26
36

Medium Clouds (% Sky Obscured)

64
65
65
66
67
68
59
40
23
15
6
1
36
60
60
61
66
66
66
56
50
70
87
100

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
2
18
41
55
60
67
69
75
74
55
40
30
35
42

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 (%)

33
36
36
32
28
14
12
8
2
2
1
0
0
0
0
0
0
0
0
0
0
1
1
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)

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

Chance of Frost

Temperature (°C)

9
10
11
11
12
13
13
12
12
10
9
7
7
6
5
5
4
4
4
4
5
6
7
8

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

45
41
37
35
35
35
37
41
47
52
56
58
60
61
62
65
64
66
66
63
60
57
55
54

Pressure (mb)

1021
1021
1021
1020
1020
1019
1019
1019
1019
1020
1020
1021
1021
1021
1021
1021
1021
1021
1021
1021
1021
1021
1021
1021

Ozone (du)

411
407
406
404
404
402
399
396
394
394
394
394
396
398
400
402
403
403
404
407
411
415
416
417

Wednesday 22

Waxing Crescent 34%

10:27

02:42

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 Bad
03 Bad
04 Bad
05 OK
06 OK
07 OK
08 OK
09 OK
10 OK

Sun - Rise: 05:52, Set: 20:07, Transit: 13:00. Moon - Rise: 10:27, Set: 02:42. Civil Dark: 20:42 - 05:16. Nautical Dark: 21:26 - 04:32. Astro Dark: 22:17 - 03:41

Total Clouds (% Sky Obscured)

93
88
80
89
96
100
92
85
78
64
49
40
43
44
47
50
50
49
37
28
24
34
39
47

Low Clouds (% Sky Obscured)

44
53
65
62
60
57
52
43
35
24
19
17
18
20
20
20
18
17
18
18
18
13
7
1

Medium Clouds (% Sky Obscured)

89
80
76
88
93
99
78
58
42
35
32
19
17
17
15
12
12
9
10
8
7
17
27
40

High Clouds (% Sky Obscured)

36
26
11
8
5
2
1
0
0
0
0
0
0
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
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 (%)

12
15
16
21
24
28
24
19
7
10
8
1
2
2
1
2
1
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

51
54
56
59
58
57
55
61
67
73
77
81
85
86
86
89
89
89
91
85
82
76
66
57

Pressure (mb)

1021
1021
1021
1020
1020
1020
1020
1020
1020
1020
1021
1021
1022
1022
1022
1022
1022
1023
1023
1023
1023
1024
1024
1023

Ozone (du)

418
418
418
418
417
415
414
413
411
410
412
415
417
420
422
425
424
422
421
415
410
404
399
394

Thursday 23

Waxing Crescent 46%

No Rise

03:14

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

Sun - Rise: 05:50, Set: 20:08, Transit: 13:00. Moon - Rise: No Rise, Set: 03:14. Civil Dark: 20:44 - 05:14. Nautical Dark: 21:28 - 04:29. Astro Dark: 22:19 - 03:38

Total Clouds (% Sky Obscured)

51
53
51
63
75
87
73
58
43
46
49
44
32
16
8
6
7
13
35
53
63

Low Clouds (% Sky Obscured)

6
11
16
26
37
49
39
27
14
11
6
2
1
0
0
0
0
0
8
16
28

Medium Clouds (% Sky Obscured)

40
43
37
40
46
57
35
21
17
14
8
1
10
16
8
6
7
13
16
13
11

High Clouds (% Sky Obscured)

0
1
1
2
3
4
2
1
1
20
42
44
32
16
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

Fog (%)

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

Precipitation Probability (%)

3
4
1
4
3
0
1
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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

8
8
8
9
13
13
12
12
12
12
8
7
7
7
7
7
4
5
5
5
4

Dew Point (°C)

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

Relative Humidity (%)

50
45
41
38
38
38
38
43
50
56
60
64
69
71
75
79
79
82
82
78
74

Pressure (mb)

1023
1023
1023
1022
1022
1021
1021
1021
1021
1021
1022
1022
1022
1022
1022
1022
1022
1022
1022
1022
1022

Ozone (du)

389
387
386
384
382
380
378
377
376
375
373
371
370
368
366
364
364
364
365
365
366

Forecast for Královské Vinohrady, Praha 2, Czech Republic (50.08,14.44)

Generated: 17/04/26 11:03:08. Forecast: 17/04/26 to 23/04/26. Timezone: UTC+2.00