Clear Outside v1.0 - International Weather Forecasts For Astronomers

Saturday 25

Waxing Gibbous 68%

14:31

03:54

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

Sun - Rise: 05:45, Set: 20:11, Transit: 12:59. Moon - Rise: 14:31, Set: 03:54. Civil Dark: 20:47 - 05:09. Nautical Dark: 21:32 - 04:24. Astro Dark: 22:25 - 03:31

Total Clouds (% Sky Obscured)

16
12
10
7
6
8
2
16
34
35
25
15
20
27
28
21
21
17
17
12
52
56
77
98

Low Clouds (% Sky Obscured)

0
0
0
1
1
1
0
16
34
35
25
15
20
27
28
21
21
17
10
2
1
1
1
1

Medium Clouds (% Sky Obscured)

0
4
10
7
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
4
0
1
3
7
1
4
2
0
0
0
1
0
2
3
3
4
7
5
49
50
74
97

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)

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

Chance of Frost

Temperature (°C)

19
16
13
12
11
11
10
9
8
7
6
5
5
6
7
9
10
11
12
13
14
14
14
13

Feels Like (°C)

17
15
12
11
10
9
8
7
5
4
3
3
3
3
5
6
8
9
10
11
11
10
11
10

Dew Point (°C)

11
10
9
8
7
7
6
5
3
3
3
3
2
1
1
1
1
1
1
1
0
1
1
1

Relative Humidity (%)

59
69
74
75
77
76
78
77
73
76
79
83
79
67
63
58
52
48
44
42
40
41
42
44

Pressure (mb)

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

Ozone (du)

380
382
384
384
383
386
387
381
377
378
380
382
381
379
378
379
380
379
380
381
382
386
390
395

Sunday 26

Waxing Gibbous 78%

15:46

04:08

19 Bad
20 Bad
21 Bad
22 Bad
23 Bad
00 Good
01 Bad
02 Bad
03 Good
04 OK
05 Good
06 OK
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: 05:44, Set: 20:13, Transit: 12:59. Moon - Rise: 15:46, Set: 04:08. Civil Dark: 20:49 - 05:07. Nautical Dark: 21:34 - 04:22. Astro Dark: 22:28 - 03:28

Total Clouds (% Sky Obscured)

100
100
100
84
67
9
49
61
10
21
9
36
65
55
80
93
99
82
65
64
100
100
100
100

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

18
13
54
25
0
0
0
0
0
1
0
0
0
0
5
43
81
75
52
51
92
100
100
98

High Clouds (% Sky Obscured)

100
100
100
84
67
6
49
61
8
16
6
34
65
55
80
92
99
82
64
45
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 (%)

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

Chance of Frost

Temperature (°C)

12
10
8
7
7
6
6
5
5
4
3
3
4
6
8
10
12
13
14
15
16
16
15
15

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

55
60
63
64
62
61
64
65
67
68
69
69
66
59
55
52
49
46
44
42
40
40
42
44

Pressure (mb)

1023
1024
1025
1025
1025
1025
1025
1025
1025
1025
1025
1025
1025
1025
1025
1025
1025
1024
1023
1022
1022
1021
1021
1020

Ozone (du)

397
397
400
406
406
407
408
407
407
405
405
404
403
401
399
400
400
398
396
393
390
389
388
387

Monday 27

Waxing Gibbous 86%

16:59

04:20

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 OK

Sun - Rise: 05:42, Set: 20:15, Transit: 12:59. Moon - Rise: 16:59, Set: 04:20. Civil Dark: 20:51 - 05:05. Nautical Dark: 21:36 - 04:19. Astro Dark: 22:30 - 03:25

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
96
61
61
100
100
100
100
100
100
96
94
91
90
93
97
97
75
37

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
9
16
24
24
26

Medium Clouds (% Sky Obscured)

91
87
100
75
75
64
75
27
42
100
100
100
99
100
73
36
91
56
85
73
62
25
15
20

High Clouds (% Sky Obscured)

100
100
98
100
96
90
40
32
36
70
93
35
29
29
100
91
91
86
74
78
88
97
65
28

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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

12
11
9
8
6
5
5
5
5
5
4
3
4
6
7
9
10
12
13
13
13
13
13
12

Dew Point (°C)

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

Relative Humidity (%)

54
56
55
63
69
73
75
78
81
83
80
79
76
69
64
58
54
51
49
47
45
44
45
52

Pressure (mb)

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

Ozone (du)

388
388
388
388
390
395
400
405
407
409
414
415
413
411
411
412
413
415
414
416
419
420
419
419

Tuesday 28

Waxing Gibbous 92%

18:12

04:32

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

Sun - Rise: 05:40, Set: 20:16, Transit: 12:59. Moon - Rise: 18:12, Set: 04:32. Civil Dark: 20:52 - 05:03. Nautical Dark: 21:39 - 04:17. Astro Dark: 22:33 - 03:22

Total Clouds (% Sky Obscured)

39
58
15
9
7
8
9
20
35
53
34
19
0
0
0
0
1
3
4
14
24
36
27
15

Low Clouds (% Sky Obscured)

23
20
15
9
7
6
5
2
2
1
0
0
0
0
0
0
1
2
3
3
1
0
0
0

Medium Clouds (% Sky Obscured)

27
19
9
0
0
0
0
12
22
39
30
16
0
0
0
0
0
0
0
14
24
36
27
15

High Clouds (% Sky Obscured)

4
10
0
0
0
0
1
17
33
48
34
17
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)

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

Chance of Frost

Temperature (°C)

14
12
11
9
8
7
6
5
5
4
4
4
5
7
9
10
12
13
13
14
14
14
14
13

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

58
62
60
63
68
71
72
72
72
72
72
72
67
54
48
45
41
40
40
39
39
39
38
42

Pressure (mb)

1019
1020
1021
1022
1022
1023
1023
1023
1023
1023
1023
1024
1024
1025
1025
1025
1025
1025
1024
1024
1024
1024
1024
1024

Ozone (du)

418
421
420
417
414
411
410
410
410
412
413
414
417
419
420
421
421
418
414
413
416
417
415
409

Wednesday 29

Waxing Gibbous 97%

No Rise

04:46

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
16 Good
17 OK
18 OK

Sun - Rise: 05:38, Set: 20:18, Transit: 12:59. Moon - Rise: No Rise, Set: 04:46. Civil Dark: 20:54 - 05:01. Nautical Dark: 21:41 - 04:15. Astro Dark: 22:36 - 03:18

Total Clouds (% Sky Obscured)

3
2
1
0
3
3
3
3
1
3
4
1
4
9
12
15
11
8
4
6
10
18
19
20

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
0
0

Medium Clouds (% Sky Obscured)

3
2
1
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)

0
0
0
0
1
1
1
1
0
1
1
0
2
9
12
15
11
8
4
6
10
18
18
14

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

Chance of Frost

Temperature (°C)

12
10
8
7
5
4
3
3
2
2
1
2
3
5
8
10
12
13
14
16
16
16
16
15

Feels Like (°C)

8
6
5
4
3
2
2
2
1
1
0
1
3
4
5
6
6
7
8
8
14
14
14
14

Dew Point (°C)

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

Relative Humidity (%)

45
46
42
44
49
51
54
56
58
59
60
61
58
52
50
46
43
43
41
40
41
41
42
46

Pressure (mb)

1024
1025
1026
1027
1028
1028
1029
1029
1029
1029
1030
1030
1030
1031
1031
1031
1031
1030
1029
1029
1028
1028
1027
1027

Ozone (du)

406
404
401
400
397
397
395
393
391
390
390
388
387
387
386
385
384
384
384
384
384
384
384
383

Thursday 30

Waxing Gibbous 99%

19:24

05:01

19 OK
20 OK
21 OK
22 Good
23 OK
00 OK
01 OK
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
16 Good
17 Good
18 Good

Sun - Rise: 05:36, Set: 20:19, Transit: 12:58. Moon - Rise: 19:24, Set: 05:01. Civil Dark: 20:56 - 04:59. Nautical Dark: 21:43 - 04:12. Astro Dark: 22:39 - 03:15

Total Clouds (% Sky Obscured)

19
19
19
18
21
21
24
15
11
4
4
4
4
3
2
2
1
1
1
0
0
0
0
1

Low Clouds (% Sky Obscured)

0
0
1
1
1
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)

10
3
1
3
3
4
9
8
5
1
0
0
0
0
0
0
0
0
0
0
0
0
0
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 (%)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

14
15
10
10
11
10
9
9
5
5
5
5
5
4
10
11
12
12
13
14
19
18
17
17

Dew Point (°C)

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

Relative Humidity (%)

51
59
63
68
74
77
78
82
82
82
83
78
73
69
63
56
52
48
45
42
43
44
46
52

Pressure (mb)

1027
1027
1027
1027
1028
1028
1028
1028
1028
1028
1028
1028
1028
1028
1028
1027
1027
1026
1026
1025
1025
1024
1023
1023

Ozone (du)

383
383
383
383
384
384
383
383
383
382
382
381
381
381
381
381
381
380
380
380
380
380
380
379

Friday 1

Full Moon 100%

20:38

05:19

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 OK
11 OK
12 OK
13 OK

Sun - Rise: 05:34, Set: 20:21, Transit: 12:58. Moon - Rise: 20:38, Set: 05:19. Civil Dark: 20:58 - 04:58. Nautical Dark: 21:45 - 04:10. Astro Dark: 22:42 - 03:12

Total Clouds (% Sky Obscured)

2
2
2
2
3
4
5
5
5
6
5
6
7
15
18
25
22
19
15

Low Clouds (% Sky Obscured)

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

High Clouds (% Sky Obscured)

1
1
0
0
0
0
0
1
1
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

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 (%)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

16
15
14
12
11
10
9
8
8
7
6
8
9
10
13
15
18
19
20

Feels Like (°C)

18
17
13
12
12
12
11
11
7
7
7
7
7
6
11
11
11
12
13

Dew Point (°C)

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

Relative Humidity (%)

61
69
71
76
78
81
85
88
88
88
88
82
76
69
63
56
50
47
44

Pressure (mb)

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

Ozone (du)

379
379
379
379
380
379
379
378
378
377
377
377
377
376
377
377
377
377
376

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

Generated: 25/04/26 19:58:41. Forecast: 25/04/26 to 01/05/26. Timezone: UTC+2.00