Clear Outside v1.0 - International Weather Forecasts For Astronomers

Monday 27

Waxing Gibbous 86%

15:47

04:21

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
11 Bad
12 Bad
13 Bad
14 Bad

Sun - Rise: 05:42, Set: 20:15, Transit: 12:59. Moon - Rise: 15:47, Set: 04:21. Civil Dark: 20:51 - 05:06. Nautical Dark: 21:36 - 04:20. Astro Dark: 22:30 - 03:25

Total Clouds (% Sky Obscured)

56
59
83
100
100
97
92
97
99
99
79
83
91
98
100
83
91
91
92
92
94
92
90
92

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
1
2
2

Medium Clouds (% Sky Obscured)

24
59
83
100
97
90
79
79
29
28
41
34
19
69
60
43
13
35
28
49
49
80
75
85

High Clouds (% Sky Obscured)

56
59
83
100
100
94
83
63
97
97
75
77
83
92
100
82
88
79
78
74
80
55
58
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
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
4
4
4
4
3
3
3
3
3
3
2
2
2
2
2
3
4
5
6
8
9
9
9

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

13
13
13
14
13
11
10
9
7
6
6
5
4
4
3
3
3
5
7
9
11
12
12
13

Dew Point (°C)

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

Relative Humidity (%)

32
34
34
41
46
50
53
56
58
58
59
61
64
67
68
68
67
61
57
54
50
48
45
44

Pressure (mb)

1022
1021
1021
1020
1020
1020
1021
1021
1021
1021
1022
1021
1022
1022
1022
1022
1022
1022
1022
1022
1022
1021
1021
1021

Ozone (du)

394
392
391
389
388
386
386
387
389
390
392
393
397
402
407
410
407
406
404
401
400
403
408
411

Tuesday 28

Waxing Gibbous 92%

17:00

04:33

15 Bad
16 Bad
17 Bad
18 Bad
19 OK
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 OK
14 OK

Sun - Rise: 05:40, Set: 20:16, Transit: 12:59. Moon - Rise: 17:00, Set: 04:33. Civil Dark: 20:52 - 05:04. Nautical Dark: 21:39 - 04:18. Astro Dark: 22:33 - 03:22

Total Clouds (% Sky Obscured)

97
94
100
100
34
14
13
4
4
6
3
1
1
4
0
3
4
1
0
1
14
16
33
30

Low Clouds (% Sky Obscured)

2
3
2
2
6
14
13
2
1
6
1
0
0
0
0
0
0
0
0
0
14
16
30
10

Medium Clouds (% Sky Obscured)

86
93
75
54
34
13
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
30

High Clouds (% Sky Obscured)

80
64
81
96
5
0
0
0
0
0
0
1
1
3
0
3
4
1
0
1
3
0
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)

9
10
11
11
11
9
9
10
9
7
5
4
4
4
3
3
3
5
7
9
10
10
9
9

Chance of Frost

Temperature (°C)

17
17
17
16
14
13
11
10
8
7
6
5
4
4
3
3
4
6
8
10
11
13
13
14

Feels Like (°C)

13
13
13
11
10
11
9
6
5
5
4
4
3
3
2
2
3
4
6
7
9
10
11
11

Dew Point (°C)

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

Relative Humidity (%)

44
44
48
52
57
59
55
52
50
51
53
54
54
56
57
58
56
49
45
46
44
42
38
33

Pressure (mb)

1021
1021
1020
1021
1021
1022
1023
1024
1024
1025
1025
1025
1026
1026
1026
1027
1027
1027
1027
1028
1028
1027
1027
1027

Ozone (du)

412
411
407
406
407
409
409
408
406
406
406
406
405
404
403
402
404
406
405
407
407
406
404
405

Wednesday 29

Waxing Gibbous 97%

18:12

04:46

15 OK
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

Sun - Rise: 05:39, Set: 20:18, Transit: 12:59. Moon - Rise: 18:12, Set: 04:46. Civil Dark: 20:54 - 05:02. Nautical Dark: 21:41 - 04:15. Astro Dark: 22:36 - 03:19

Total Clouds (% Sky Obscured)

24
3
0
0
1
0
4
6
6
3
10
0
4
4
5
0
3
0
1
4
0
5
7
6

Low Clouds (% Sky Obscured)

1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
2
2
0

Medium Clouds (% Sky Obscured)

24
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
3
0
0
0
0
4
6
6
3
10
0
4
4
5
0
3
0
1
4
0
1
3
5

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)

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

Chance of Frost

Temperature (°C)

14
14
14
13
11
9
7
6
5
4
3
2
2
1
1
1
2
5
7
8
10
12
13
14

Feels Like (°C)

10
10
9
9
7
6
5
4
4
2
2
1
1
1
-0
0
2
5
7
8
9
11
11
12

Dew Point (°C)

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

Relative Humidity (%)

28
28
29
35
40
46
49
51
54
54
56
56
56
56
57
58
55
47
43
39
36
34
35
37

Pressure (mb)

1026
1026
1027
1027
1028
1029
1030
1031
1031
1032
1032
1032
1032
1032
1033
1033
1033
1033
1033
1033
1033
1032
1031
1031

Ozone (du)

406
407
410
412
414
417
416
414
412
410
407
406
404
402
401
399
397
396
395
396
396
395
396
397

Thursday 30

Waxing Gibbous 99%

19:25

05:01

15 Good
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

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)

4
7
8
10
8
10
6
9
4
3
4
5
3
5
8
2
2
0
0
0
0
0
0
6

Low Clouds (% Sky Obscured)

2
2
2
2
2
2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
5

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
2

High Clouds (% Sky Obscured)

0
2
3
5
3
5
5
8
3
3
3
5
2
5
8
2
1
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 (%)

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)

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

Chance of Frost

Temperature (°C)

14
15
15
15
14
12
11
9
8
7
7
6
6
5
5
5
7
8
10
12
14
16
17
18

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

38
39
39
42
51
58
64
67
69
71
74
75
75
78
79
80
79
71
65
59
55
50
47
46

Pressure (mb)

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

Ozone (du)

397
395
395
394
393
393
393
393
394
395
395
395
396
396
395
394
393
392
392
391
389
388
386
385

Friday 1

Full Moon 100%

20:38

05:20

15 Good
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

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)

12
17
16
16
17
14
11
9
5
3
0
0
0
0
0
0
0
0
0
0
4
6
11
9

Low Clouds (% Sky Obscured)

10
14
9
4
0
4
7
9
5
3
0
0
0
0
0
0
0
0
0
0
4
6
10
9

Medium Clouds (% Sky Obscured)

5
7
14
16
17
13
6
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

High 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

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)

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

Chance of Frost

Temperature (°C)

18
18
19
18
18
16
14
12
10
10
9
8
7
7
7
8
10
11
13
15
17
18
19
20

Feels Like (°C)

18
18
18
18
18
16
14
12
10
10
9
8
8
8
8
8
8
8
13
13
13
14
15
16

Dew Point (°C)

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

Relative Humidity (%)

45
46
48
50
58
65
68
71
74
77
77
79
79
81
82
75
71
66
59
53
47
43
39
36

Pressure (mb)

1026
1026
1025
1025
1025
1025
1025
1025
1025
1025
1025
1025
1025
1025
1025
1025
1025
1025
1024
1023
1023
1022
1021
1021

Ozone (du)

385
385
385
386
386
386
386
387
386
384
384
384
384
384
384
384
385
385
386
386
387
387
387
387

Saturday 2

Waning Gibbous 98%

21:50

05:44

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

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)

6
8
4
3
0
0
0
0
0
1
1
10
19
28
40
50
50
50
56
56
52
49
50
67

Low Clouds (% Sky Obscured)

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

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
2
3
16
27
37
39
36
40
42

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
2
5
10
12
13
15
16
16
21
22
42
43
62

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
2
7
10
14

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

Chance of Frost

Temperature (°C)

21
21
21
19
17
16
15
13
12
11
10
9
8
8
7
8
10
11
13
15
17
18
19
19

Feels Like (°C)

21
20
19
20
20
20
14
14
14
13
12
12
7
8
7
7
7
7
10
11
12
13
13
14

Dew Point (°C)

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

Relative Humidity (%)

36
36
36
43
50
59
62
66
68
71
73
77
78
78
79
75
70
68
61
55
50
51
51
52

Pressure (mb)

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

Ozone (du)

386
386
385
384
383
383
383
384
384
385
385
386
384
382
380
382
383
385
384
384
383
382
381
380

Sunday 3

Waning Gibbous 95%

22:59

06:16

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

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)

82
100
100
100
100
100
100
100
100
100
99
99
99
99
98
95
92

Low Clouds (% Sky Obscured)

8
12
9
6
1
1
1
0
7
18
27
30
35
38
49
58
67

Medium Clouds (% Sky Obscured)

38
30
61
80
88
91
95
99
98
96
95
91
87
84
84
82
77

High Clouds (% Sky Obscured)

81
100
100
100
100
100
100
100
100
100
99
98
98
98
67
36
0

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
8

Fog (%)

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

Precipitation Probability (%)

16
15
16
18
12
21
21
5
15
36
51
65
68
67
54
44
38

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0.2
0.4
0.4
0.4
0
0
0

Wind Speed/Direction (mph)

5
5
4
3
3
3
4
4
5
4
4
4
3
3
3
3
3

Chance of Frost

Temperature (°C)

19
20
20
19
18
17
17
16
14
14
13
12
13
12
12
12
12

Feels Like (°C)

18
19
19
19
19
19
16
16
15
15
15
14
12
12
11
11
11

Dew Point (°C)

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

Relative Humidity (%)

52
53
54
58
63
70
71
74
78
79
83
84
86
87
87
89
90

Pressure (mb)

1014
1013
1013
1013
1013
1013
1013
1013
1013
1013
1013
1013
1013
1013
1013
1013
1013

Ozone (du)

378
377
376
375
374
374
374
373
373
373
374
374
372
371
370
369
369

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

Generated: 27/04/26 15:06:46. Forecast: 27/04/26 to 03/05/26. Timezone: UTC+2.00