Clear Outside v1.0 - International Weather Forecasts For Astronomers

Saturday 28

Waxing Gibbous 81%

15:23

05:31

17 OK
18 Bad
19 Bad
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad
01 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

Sun - Rise: 06:43, Set: 18:27, Transit: 13:06. Moon - Rise: 15:23, Set: 05:31. Civil Dark: 19:00 - 06:11. Nautical Dark: 19:39 - 05:31. Astro Dark: 20:20 - 04:50

Total Clouds (% Sky Obscured)

45
53
64
99
97
99
99
86
85
98
99
100
100
100
100
100
99
99
99
97
99
98
82
72

Low Clouds (% Sky Obscured)

1
19
10
11
35
42
40
26
49
62
67
67
77
80
87
85
87
86
92
92
93
94
80
67

Medium Clouds (% Sky Obscured)

22
26
46
52
57
88
68
58
49
75
91
88
94
94
94
87
92
93
95
87
73
55
45
46

High Clouds (% Sky Obscured)

45
53
64
97
78
82
90
57
44
49
87
100
100
100
97
98
83
70
66
31
54
56
11
7

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
5
0
0
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
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

0
0
0
0
0
0
1
2
3
5
16
20
9
8
8
21
17
24
28
19
13
9
6
2

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
4
3
5
5
6
8
6
5
5
7
7
7
7
8
9
10
10
11
13
13
13
13
11

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

7
7
4
3
1
1
-0
-1
0
-0
-1
-2
-1
-1
-1
-1
-1
0
1
1
2
2
2
3

Dew Point (°C)

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

Relative Humidity (%)

36
45
46
51
56
60
79
88
91
91
77
82
86
89
93
96
94
93
82
65
52
46
43
43

Pressure (mb)

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

Ozone (du)

395
392
390
390
390
388
387
386
384
383
381
378
375
376
377
377
376
376
377
379
378
381
384
387

Sunday 29

Waxing Gibbous 89%

16:42

05:46

17 Bad
18 Bad
19 Bad
20 Bad
21 OK
22 Good
23 Good
00 Good
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

Sun - Rise: 06:41, Set: 19:29, Transit: 13:06. Moon - Rise: 16:42, Set: 05:46. Civil Dark: 20:02 - 06:08. Nautical Dark: 20:41 - 05:29. Astro Dark: 21:22 - 04:47

Total Clouds (% Sky Obscured)

72
87
76
95
28
17
5
9
70
65
71
100
100
100
100
100
100
100
97
97
96
100
92
95

Low Clouds (% Sky Obscured)

67
48
52
30
0
2
2
2
2
2
2
2
2
26
45
66
59
87
88
89
92
100
65
74

Medium Clouds (% Sky Obscured)

46
69
57
68
28
17
0
0
0
7
45
45
45
100
100
100
100
93
56
93
89
99
85
50

High Clouds (% Sky Obscured)

7
4
27
70
3
0
0
4
70
65
71
58
100
92
26
0
23
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
5
6
0
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
Light Rain
None
None
None
None
None

Precipitation Probability (%)

2
1
0
0
0
0
0
0
0
0
0
0
0
0
3
16
27
37
73
64
44
34
36
49

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.5
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

43
47
55
61
62
67
73
80
84
84
78
73
74
73
76
72
71
67
68
79
86
90
66
49

Pressure (mb)

1024
1024
1024
1025
1025
1025
1025
1024
1024
1023
1022
1021
1020
1019
1019
1018
1017
1017
1016
1015
1014
1014
1013
1013

Ozone (du)

387
389
393
398
397
395
395
396
397
401
402
403
404
410
418
419
424
425
430
429
431
434
437
440

Monday 30

Waxing Gibbous 95%

No Rise

06:00

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
11 Bad
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad

Sun - Rise: 06:39, Set: 19:30, Transit: 13:05. Moon - Rise: No Rise, Set: 06:00. Civil Dark: 20:03 - 06:06. Nautical Dark: 20:42 - 05:27. Astro Dark: 21:24 - 04:45

Total Clouds (% Sky Obscured)

98
91
74
82
72
87
74
86
92
100
100
97
96
87
96
100
91
87
96
99
99
90
82
79

Low Clouds (% Sky Obscured)

35
29
31
45
42
50
37
56
67
70
80
83
86
77
92
99
83
76
73
85
89
79
70
61

Medium Clouds (% Sky Obscured)

95
83
49
61
40
46
39
41
73
100
98
89
81
52
23
7
26
82
93
97
97
83
73
52

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
7
0
0
0
0
0
0
0
0
0
0
0
0
0
0

ISS Passover

Visibility (miles)

8
9
9
9
9
9
9
9
9
8
0
0
1
9
8
9
8
9
7
7
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
None
None
None
Light Rain
Snow
None
None
None
None
None
None
None
None
Very Light Rain
None
Very Light Rain
Light Rain
Very Light Rain

Precipitation Probability (%)

40
36
20
20
8
9
11
5
14
66
94
51
16
17
18
20
18
12
38
67
62
67
73
62

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0.4
0.7
0
0
0
0
0
0
0
0
0.3
0.2
0.3
0.5
0.2

Wind Speed/Direction (mph)

14
11
9
6
6
7
7
8
8
7
7
7
8
8
9
8
9
9
11
11
9
8
9
10

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

-1
-1
0
0
0
-1
-1
-1
-1
-0
1
1
1
-1
-1
1
0
1
-1
2
5
6
6
5

Relative Humidity (%)

54
59
66
73
79
77
77
77
80
85
98
98
96
86
83
89
83
79
66
79
94
96
94
93

Pressure (mb)

1013
1013
1014
1015
1015
1016
1016
1016
1017
1017
1017
1018
1018
1018
1019
1020
1020
1020
1020
1020
1020
1019
1019
1019

Ozone (du)

442
440
442
444
442
441
439
439
438
438
439
444
449
455
460
462
464
465
467
468
471
472
474
478

Tuesday 31

Waxing Gibbous 99%

17:57

06:12

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 OK
07 OK
08 OK
09 OK
10 Bad
11 Bad
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad

Sun - Rise: 06:37, Set: 19:32, Transit: 13:05. Moon - Rise: 17:57, Set: 06:12. Civil Dark: 20:05 - 06:04. Nautical Dark: 20:44 - 05:24. Astro Dark: 21:26 - 04:42

Total Clouds (% Sky Obscured)

75
73
68
67
55
65
73
82
53
88
90
90
61
26
14
41
47
69
78
88
97
88
79
62

Low Clouds (% Sky Obscured)

51
46
28
39
36
46
56
66
50
78
80
82
54
21
10
17
20
30
35
45
56
62
65
57

Medium Clouds (% Sky Obscured)

45
27
44
11
10
11
16
22
30
25
21
22
17
9
1
24
36
55
57
64
69
60
54
45

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
0
0
19
39
66
44
22
0

ISS Passover

Visibility (miles)

0
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 (%)

45
40
20
25
19
9
13
12
8
3
2
1
0
0
0
0
1
3
11
8
5
8
18
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

94
88
90
89
85
86
83
85
83
88
89
88
89
89
89
83
72
62
57
52
50
47
46
46

Pressure (mb)

1019
1019
1019
1020
1020
1021
1022
1022
1022
1023
1023
1023
1023
1023
1024
1024
1024
1024
1024
1023
1023
1022
1021
1021

Ozone (du)

479
478
478
479
478
478
479
479
478
479
479
476
475
476
478
474
466
457
450
443
437
437
433
429

Wednesday 1

Waxing Gibbous 100%

19:11

06:25

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

Sun - Rise: 06:35, Set: 19:34, Transit: 13:05. Moon - Rise: 19:11, Set: 06:25. Civil Dark: 20:06 - 06:02. Nautical Dark: 20:46 - 05:22. Astro Dark: 21:28 - 04:39

Total Clouds (% Sky Obscured)

68
75
68
76
63
59
51
50
47
40
42
44
45
46
48
42
51
55
56
56
61
62
57
44

Low Clouds (% Sky Obscured)

60
61
53
57
54
56
51
48
44
40
41
40
39
42
44
14
16
20
20
20
20
24
27
30

Medium Clouds (% Sky Obscured)

59
71
68
72
63
58
51
49
41
38
39
36
39
38
38
34
35
30
30
50
46
51
57
43

High Clouds (% Sky Obscured)

0
0
1
1
0
1
0
2
1
1
3
5
28
46
48
24
25
25
20
11
7
7
12
17

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 (%)

6
2
1
4
7
8
6
4
2
2
1
0
2
2
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

46
48
62
69
71
74
73
76
77
80
83
85
86
86
86
79
68
60
52
47
42
37
36
36

Pressure (mb)

1020
1020
1020
1021
1021
1021
1021
1020
1020
1019
1019
1018
1018
1018
1018
1017
1017
1016
1016
1015
1014
1013
1013
1012

Ozone (du)

423
417
412
409
408
409
410
408
408
407
406
405
406
408
405
403
401
399
397
396
396
395
397
399

Thursday 2

Full Moon 99%

20:25

06:38

17 OK
18 OK
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

Sun - Rise: 06:32, Set: 19:35, Transit: 13:05. Moon - Rise: 20:25, Set: 06:38. Civil Dark: 20:08 - 05:59. Nautical Dark: 20:48 - 05:19. Astro Dark: 21:30 - 04:37

Total Clouds (% Sky Obscured)

42
40
43
60
76
89
92
95
97
98
97
97
97
98
98
99
99
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

24
22
20
24
28
30
36
41
47
57
67
79
80
81
83
82
75
75
69
59
52
47
46
48

Medium Clouds (% Sky Obscured)

33
29
29
37
27
26
27
17
17
17
13
13
18
27
41
65
87
99
100
100
100
99
99
98

High Clouds (% Sky Obscured)

34
40
43
60
76
89
92
95
93
83
74
75
71
58
46
64
82
100
100
100
100
92
84
75

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
2
4
3
11
14
17
17
19
20
23
28
32
42
48
51
44
38
33

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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

35
42
52
61
64
67
71
75
79
85
83
83
83
85
86
86
86
87
87
88
88
88
90
90

Pressure (mb)

1011
1012
1012
1012
1012
1012
1012
1012
1012
1012
1011
1011
1011
1011
1011
1011
1011
1011
1011
1011
1010
1010
1010
1010

Ozone (du)

401
402
404
405
399
393
387
391
394
398
394
391
387
388
389
389
388
387
386
387
389
391
393
396

Friday 3

Waning Gibbous 96%

21:39

06:54

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
11 Bad
12 Bad
13 Bad

Sun - Rise: 06:30, Set: 19:37, Transit: 13:04. Moon - Rise: 21:39, Set: 06:54. Civil Dark: 20:10 - 05:57. Nautical Dark: 20:50 - 05:17. Astro Dark: 21:32 - 04:34

Total Clouds (% Sky Obscured)

95
91
78
77
78
76
84
91
100
100
100
100
98
96
93
96
98
99
97
95
93

Low Clouds (% Sky Obscured)

55
56
53
56
59
63
66
69
73
59
45
33
40
46
53
56
55
52
57
63
69

Medium Clouds (% Sky Obscured)

95
91
78
71
62
52
63
74
87
84
87
88
95
94
88
86
88
92
87
82
78

High Clouds (% Sky Obscured)

75
68
70
77
78
76
84
91
92
92
96
100
98
96
93
67
34
0
1
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

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 (%)

27
20
7
8
9
8
17
21
30
29
33
38
32
28
28
22
17
10
18
23
28

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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

90
90
88
88
86
86
85
86
88
91
89
88
86
85
85
83
81
75
70
73
73

Pressure (mb)

1010
1011
1011
1011
1012
1012
1012
1012
1012
1013
1013
1013
1013
1013
1014
1014
1014
1014
1014
1014
1014

Ozone (du)

399
401
403
405
405
404
403
401
399
397
395
393
392
390
389
388
386
384
383
382
381

Forecast for Letňany, Praha 18, Czech Republic (50.14,14.52)

Generated: 28/03/26 17:13:53. Forecast: 28/03/26 to 03/04/26. Timezone: UTC+1.00