Clear Outside v1.0 - International Weather Forecasts For Astronomers

Thursday 30

Waxing Gibbous 99%

19:25

05:01

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

Sun - Rise: 05:37, Set: 20:19, Transit: 12:59. Moon - Rise: 19:25, Set: 05:01. Civil Dark: 20:56 - 05:00. Nautical Dark: 21:43 - 04:13. Astro Dark: 22:39 - 03:16

Total Clouds (% Sky Obscured)

18
17
17
19
59
61
46
23
5
4
4
4
5
5
7
5
5
4
4
0
0
4
4
9

Low Clouds (% Sky Obscured)

1
1
2
5
11
12
10
5
1
1
0
0
0
0
0
1
0
0
0
0
0
0
0
9

Medium Clouds (% Sky Obscured)

0
0
6
16
17
18
8
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

8
8
6
8
7
4
4
4
0
0
0
0
1
1
3
3
3
3
3
0
0
4
4
4

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)

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

Chance of Frost

Temperature (°C)

14
14
14
14
13
11
10
10
9
8
8
7
6
5
4
5
9
11
14
16
18
19
20
20

Feels Like (°C)

13
13
12
13
12
10
9
8
7
7
7
6
5
5
4
5
9
11
14
16
17
18
19
20

Dew Point (°C)

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

Relative Humidity (%)

34
35
39
50
54
56
56
59
62
63
65
67
70
72
73
70
65
62
57
51
48
45
43
42

Pressure (mb)

1029
1029
1028
1028
1029
1029
1030
1030
1030
1030
1030
1030
1030
1030
1031
1031
1031
1030
1030
1030
1029
1029
1028
1027

Ozone (du)

403
403
402
401
400
400
399
398
398
396
396
396
396
396
396
395
394
393
392
392
392
392
392
391

Friday 1

Full Moon 100%

20:38

05:20

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

Sun - Rise: 05:35, Set: 20:21, Transit: 12:59. Moon - Rise: 20:38, Set: 05:20. Civil Dark: 20:58 - 04:58. Nautical Dark: 21:45 - 04:11. Astro Dark: 22:41 - 03:13

Total Clouds (% Sky Obscured)

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

Low Clouds (% Sky Obscured)

0
4
2
2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

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

High Clouds (% Sky Obscured)

4
0
0
0
0
0
0
0
0
0
0
4
3
3
3
3
3
3
3
4
3
3
3
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)

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

Chance of Frost

Temperature (°C)

21
21
20
19
17
16
14
14
12
10
9
8
7
6
6
7
10
14
17
19
21
22
23
24

Feels Like (°C)

20
20
20
19
18
17
16
15
13
10
9
8
8
7
7
7
11
14
17
19
20
21
22
22

Dew Point (°C)

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

Relative Humidity (%)

41
42
45
53
61
68
71
74
76
76
78
78
79
81
82
79
71
62
55
48
41
37
35
34

Pressure (mb)

1027
1026
1026
1026
1026
1027
1027
1027
1027
1027
1027
1027
1027
1027
1027
1027
1027
1027
1026
1025
1024
1024
1023
1022

Ozone (du)

391
390
389
389
388
388
388
388
388
386
384
383
384
384
384
383
383
384
385
386
386
387
387
386

Saturday 2

Waning Gibbous 98%

21:50

05:44

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

Sun - Rise: 05:33, Set: 20:22, Transit: 12:59. Moon - Rise: 21:50, Set: 05:44. Civil Dark: 20:59 - 04:56. Nautical Dark: 21:47 - 04:08. Astro Dark: 22:44 - 03:10

Total Clouds (% Sky Obscured)

3
0
0
0
0
0
0
0
0
0
0
3
33
7
8
27
43
43
9
14
13
40
10
13

Low Clouds (% Sky Obscured)

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

Medium Clouds (% Sky Obscured)

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

High Clouds (% Sky Obscured)

3
0
0
0
0
0
0
0
0
0
0
3
33
7
8
27
43
42
4
9
9
40
6
10

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)

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

Chance of Frost

Temperature (°C)

24
24
24
23
20
17
15
13
12
11
11
10
9
9
8
9
12
16
18
20
22
24
25
26

Feels Like (°C)

23
23
23
22
20
17
14
12
12
12
11
11
10
8
8
9
11
15
18
21
23
25
25
27

Dew Point (°C)

8
8
10
12
12
10
9
8
7
7
8
7
6
6
5
5
7
9
9
9
9
9
10
9

Relative Humidity (%)

34
35
41
51
59
63
67
71
75
77
80
80
81
81
82
78
70
63
55
47
42
39
36
34

Pressure (mb)

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

Ozone (du)

386
386
386
386
385
385
385
386
386
386
387
388
385
381
381
381
382
384
384
383
382
379
378
377

Sunday 3

Waning Gibbous 95%

22:59

06:16

16 OK
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

Sun - Rise: 05:32, Set: 20:24, Transit: 12:58. Moon - Rise: 22:59, Set: 06:16. Civil Dark: 21:01 - 04:54. Nautical Dark: 21:49 - 04:06. Astro Dark: 22:47 - 03:07

Total Clouds (% Sky Obscured)

34
60
49
71
78
89
100
100
99
100
97
95
91
93
96
95
95
90
85
76
67
59
66
76

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
0
1
0
0
0
0

Medium Clouds (% Sky Obscured)

0
0
2
2
5
11
17
42
77
67
89
81
67
78
88
93
70
64
58
47
64
50
42
58

High Clouds (% Sky Obscured)

34
56
40
62
75
87
100
100
99
100
70
85
69
49
69
77
86
70
55
43
34
20
28
51

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
5
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
2
3
3
3
4
1
1
4
5
17
11
8
7
24
18
6
4
1
0
1
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)

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

Chance of Frost

Temperature (°C)

26
26
26
24
22
20
19
18
17
15
14
14
13
13
13
14
14
16
18
20
21
22
23
23

Feels Like (°C)

27
26
25
24
21
18
17
15
15
14
13
12
12
11
12
13
14
16
18
19
19
21
22
23

Dew Point (°C)

9
10
11
13
14
13
12
11
11
10
9
9
9
9
9
10
9
9
10
10
10
10
11
10

Relative Humidity (%)

34
34
40
50
59
62
64
65
68
70
73
74
72
79
79
76
69
63
57
53
49
47
45
43

Pressure (mb)

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

Ozone (du)

376
376
374
372
370
370
370
370
369
369
369
369
368
367
367
367
367
367
367
367
367
367
367
367

Monday 4

Waning Gibbous 90%

00:01

06:59

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
11 Bad
12 Bad
13 Bad
14 Bad
15 Bad

Sun - Rise: 05:30, Set: 20:25, Transit: 12:58. Moon - Rise: 00:01, Set: 06:59. Civil Dark: 21:03 - 04:52. Nautical Dark: 21:51 - 04:04. Astro Dark: 22:50 - 03:03

Total Clouds (% Sky Obscured)

84
89
94
100
99
96
100
100
99
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

3
23
29
31
0
0
0
7
15
24
66
64
24
50
63
81
92
91
90
90
88
88
78
67

Medium Clouds (% Sky Obscured)

57
64
67
82
85
94
100
100
98
100
100
100
100
99
100
100
99
98
97
98
99
100
100
99

High Clouds (% Sky Obscured)

66
72
87
100
98
87
75
99
89
100
96
78
100
100
99
99
80
90
100
100
100
100
96
92

ISS Passover

Visibility (miles)

9
9
9
9
9
9
5
9
9
9
9
9
9
9
9
9
9
7
5
4
5
7
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

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

Precipitation Probability (%)

1
13
8
22
51
52
43
41
52
57
57
46
39
39
49
71
94
95
95
95
95
93
95
94

Precipitation Amount (mm)

0
0
0
0
0
0.2
0
0
0
0
0.2
0
0
0
0
0
0.5
0.9
1.3
1.2
0.8
0.5
0.5
0.5

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

24
24
23
22
21
19
18
17
16
15
15
14
14
14
13
14
14
13
14
14
14
15
15
16

Feels Like (°C)

23
24
23
22
21
20
19
17
15
16
14
13
14
13
13
13
15
13
14
14
14
14
14
15

Dew Point (°C)

11
12
13
14
14
15
15
14
13
13
13
13
13
13
13
13
13
12
13
13
13
12
12
12

Relative Humidity (%)

43
45
53
60
66
73
78
82
81
83
89
92
93
95
95
93
93
93
92
93
89
84
82
78

Pressure (mb)

1010
1009
1009
1009
1009
1009
1009
1010
1010
1010
1010
1010
1010
1010
1010
1010
1010
1011
1011
1011
1010
1010
1010
1010

Ozone (du)

368
368
368
368
370
371
370
371
371
371
371
372
371
371
371
371
371
372
372
372
373
374
375
376

Tuesday 5

Waning Gibbous 83%

00:53

07:53

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
11 Bad
12 Bad
13 Bad
14 Bad
15 Bad

Sun - Rise: 05:28, Set: 20:27, Transit: 12:58. Moon - Rise: 00:53, Set: 07:53. Civil Dark: 21:04 - 04:51. Nautical Dark: 21:53 - 04:01. Astro Dark: 22:53 - 03:00

Total Clouds (% Sky Obscured)

100
82
65
47
46
53
61
69
78
86
91
95
100
100
100
100
100
100
99
99
99
99
100
100

Low Clouds (% Sky Obscured)

55
52
44
42
46
50
52
54
57
60
68
76
88
80
70
60
58
68
81
72
64
58
58
58

Medium Clouds (% Sky Obscured)

99
74
49
24
25
25
26
25
20
19
45
69
97
95
94
93
78
72
83
90
96
94
96
98

High Clouds (% Sky Obscured)

89
79
65
47
46
53
61
69
78
71
79
87
97
95
92
90
83
75
67
55
43
31
46
64

ISS Passover

Visibility (miles)

6
5
6
7
8
8
9
9
9
9
9
7
5
2
4
6
7
8
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
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Very Light Rain
Light Rain
Very Light Rain
None
None
None
None
None
None

Precipitation Probability (%)

89
95
95
95
93
95
95
95
95
95
95
95
95
95
89
85
80
67
34
35
32
27
31
34

Precipitation Amount (mm)

0.4
0.6
0.7
0.8
0.7
0.8
1
0.9
1
1.1
1
0.8
0.6
0.6
0.4
0.3
0.4
0.3
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

15
14
15
15
16
15
15
15
15
15
14
11
11
10
10
11
11
11
11
11
11
12
12
17

Dew Point (°C)

12
11
11
12
12
12
11
11
11
11
10
10
11
11
11
11
11
11
11
11
10
9
8
9

Relative Humidity (%)

75
72
77
82
86
89
92
95
93
95
95
96
96
98
96
96
95
89
83
76
68
61
54
53

Pressure (mb)

1009
1009
1009
1009
1009
1009
1009
1009
1009
1009
1009
1009
1009
1008
1009
1009
1009
1009
1009
1009
1009
1009
1008
1008

Ozone (du)

378
379
378
378
377
377
378
378
377
377
376
376
375
375
376
377
377
377
376
376
378
380
382
382

Wednesday 6

Waning Gibbous 76%

01:34

08:57

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
11 Bad
12 Bad
13 Bad

Sun - Rise: 05:27, Set: 20:28, Transit: 12:58. Moon - Rise: 01:34, Set: 08:57. Civil Dark: 21:06 - 04:49. Nautical Dark: 21:55 - 03:59. Astro Dark: 22:56 - 02:57

Total Clouds (% Sky Obscured)

100
95
91
88
92
95
99
98
98
98
97
97
96
96
97
97
93
89
84
65
43
19

Low Clouds (% Sky Obscured)

56
60
64
68
75
84
93
94
93
93
92
91
90
83
79
76
69
65
61
47
33
17

Medium Clouds (% Sky Obscured)

100
92
84
78
84
91
96
94
92
89
87
85
80
81
83
85
72
63
50
37
24
12

High Clouds (% Sky Obscured)

81
61
45
22
16
14
20
20
20
20
20
20
10
19
30
46
46
47
48
32
16
0

ISS Passover

Visibility (miles)

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

Precipitation Type

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

Precipitation Probability (%)

23
46
59
68
67
65
64
69
72
78
95
95
95
95
95
95
95
79
50
42
40
37

Precipitation Amount (mm)

0
0
0.3
0.4
0.3
0.3
0.3
0.3
0.3
0.4
0.8
1.1
1.4
1.6
1.6
1.2
0.7
0.4
0
0
0
0

Wind Speed/Direction (mph)

6
5
3
3
4
3
3
3
4
5
6
7
8
10
10
10
10
11
12
13
13
13

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

16
16
16
17
17
13
13
13
13
12
13
11
10
10
10
10
10
7
8
8
8
8

Dew Point (°C)

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

Relative Humidity (%)

51
50
57
66
76
82
86
90
93
93
95
96
96
96
96
93
93
87
83
79
68
58

Pressure (mb)

1008
1007
1008
1008
1008
1008
1008
1008
1009
1009
1010
1011
1011
1012
1013
1014
1015
1015
1016
1016
1016
1016

Ozone (du)

381
381
381
382
382
381
381
380
379
377
375
376
376
376
378
379
381
382
383
384
385
386

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

Generated: 30/04/26 16:15:29. Forecast: 30/04/26 to 06/05/26. Timezone: UTC+2.00