Clear Outside v1.0 - International Weather Forecasts For Astronomers

Friday 22

Waxing Crescent 42%

10:59

01:59

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

Sun - Rise: 05:04, Set: 20:51, Transit: 12:58. Moon - Rise: 10:59, Set: 01:59. Civil Dark: 21:32 - 04:23. Nautical Dark: 22:29 - 03:26. Astro Dark: 23:56 - 01:56

Total Clouds (% Sky Obscured)

52
66
74
67
94
86
96
100
97
63
67
18
1
0
0
2
6
28
65
22
5
4
4
4

Low Clouds (% Sky Obscured)

1
7
41
25
35
18
7
4
2
0
0
0
0
0
0
0
0
2
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

0
0
11
31
51
33
35
60
34
6
18
14
1
0
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

52
66
61
46
83
78
91
100
93
62
56
4
0
0
0
2
3
25
65
20
5
3
3
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
2
0
0
1
1
1
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
2
3
5
5
5
5
5
5
6
6
5
5
4
3
3
2
2
2
2
2
2
1
1

Chance of Frost

Temperature (°C)

17
19
20
21
22
23
23
23
23
23
22
21
18
17
16
16
15
14
13
13
12
12
14
16

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

69
66
60
58
55
53
55
55
54
58
66
74
80
81
83
87
87
90
92
92
92
92
84
79

Pressure (mb)

1030
1030
1030
1030
1029
1029
1029
1028
1028
1028
1028
1028
1028
1029
1029
1029
1029
1029
1029
1029
1030
1030
1030
1030

Ozone (du)

328
327
326
326
326
327
327
326
327
330
335
338
340
340
341
342
341
342
343
342
340
339
338
337

Saturday 23

First Quarter 53%

12:20

02:15

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

Sun - Rise: 05:03, Set: 20:52, Transit: 12:58. Moon - Rise: 12:20, Set: 02:15. Civil Dark: 21:34 - 04:22. Nautical Dark: 22:31 - 03:24. Astro Dark: 00:00 - 01:51

Total Clouds (% Sky Obscured)

4
5
6
17
18
49
10
15
15
8
39
28
12
14
13
52
16
9
46
3
0
0
0
0

Low Clouds (% Sky Obscured)

0
0
0
4
4
14
4
13
12
1
24
15
12
14
7
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
6
5
0
4
0
0
0
0
0
0

High Clouds (% Sky Obscured)

4
4
4
14
14
43
7
4
7
6
9
5
3
5
6
30
14
4
46
3
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)

2
2
1
2
2
3
3
2
1
1
1
2
2
2
2
2
2
2
1
1
1
1
1
1

Chance of Frost

Temperature (°C)

18
20
22
23
24
25
25
26
25
25
25
23
21
19
18
17
15
15
14
14
13
14
16
18

Feels Like (°C)

21
23
25
26
26
26
26
28
28
28
28
25
23
22
21
19
18
17
16
14
16
17
18
22

Dew Point (°C)

13
14
14
14
14
15
15
15
15
15
17
17
16
15
15
14
13
13
12
12
12
12
13
15

Relative Humidity (%)

72
67
62
57
55
53
52
52
52
52
62
67
73
78
81
83
86
87
89
89
90
90
83
78

Pressure (mb)

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

Ozone (du)

337
337
337
337
337
335
332
331
331
330
330
329
329
328
327
327
327
333
335
339
338
336
335
332

Sunday 24

Waxing Gibbous 64%

13:37

02:28

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

Sun - Rise: 05:02, Set: 20:54, Transit: 12:58. Moon - Rise: 13:37, Set: 02:28. Civil Dark: 21:35 - 04:20. Nautical Dark: 22:33 - 03:22. Astro Dark: 00:05 - 01:46

Total Clouds (% Sky Obscured)

3
19
37
41
56
60
100
100
97
88
60
52
37
28
33
23
28
28
57
9
6
5
5
5

Low Clouds (% Sky Obscured)

0
0
1
8
20
25
22
5
5
2
0
0
7
0
0
0
0
0
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

0
0
26
26
41
30
42
43
65
35
27
21
13
3
1
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

1
10
11
13
29
31
100
100
94
77
32
35
16
24
33
23
26
25
52
4
2
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
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
3
4
10
21
20
12
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
3
4
5
5
6
6
5
7
9
9
8
6
4
4
4
5
5
5
4
3
3
3
4

Chance of Frost

Temperature (°C)

20
23
24
26
26
27
27
27
27
26
25
24
21
19
18
17
17
16
15
15
14
15
16
18

Feels Like (°C)

24
25
26
28
28
28
29
27
27
26
26
24
22
21
20
19
18
17
16
15
15
16
18
19

Dew Point (°C)

15
16
17
17
16
15
15
15
16
17
18
19
18
17
17
16
15
15
14
14
13
13
14
13

Relative Humidity (%)

72
67
61
57
52
49
47
46
50
57
64
74
82
88
90
90
92
92
93
93
92
90
83
74

Pressure (mb)

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

Ozone (du)

333
333
334
332
330
328
326
324
323
321
319
317
317
316
315
314
313
312
311
309
309
309
310
311

Monday 25

Waxing Gibbous 73%

14:50

02:40

09 Good
10 Good
11 Good
12 Good
13 Good
14 Good
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

Sun - Rise: 05:01, Set: 20:55, Transit: 12:58. Moon - Rise: 14:50, Set: 02:40. Civil Dark: 21:36 - 04:19. Nautical Dark: 22:34 - 03:21. Astro Dark: 00:10 - 01:41

Total Clouds (% Sky Obscured)

2
2
3
5
5
4
10
3
4
3
3
2
2
2
2
1
2
0
0
0
0
0
0
0

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)

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

Chance of Frost

Temperature (°C)

20
21
23
24
25
25
26
26
26
25
24
22
20
18
16
15
14
13
13
12
11
13
15
17

Feels Like (°C)

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

Dew Point (°C)

13
14
13
13
12
11
11
11
11
13
15
15
13
11
10
10
10
10
9
9
8
10
10
11

Relative Humidity (%)

67
62
55
50
44
41
39
39
40
45
56
63
63
66
68
73
74
78
79
79
81
80
74
67

Pressure (mb)

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

Ozone (du)

312
312
312
312
312
312
311
311
311
311
311
311
312
312
311
311
311
310
311
312
312
312
313
314

Tuesday 26

Waxing Gibbous 82%

16:03

02:53

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

Sun - Rise: 05:00, Set: 20:56, Transit: 12:59. Moon - Rise: 16:03, Set: 02:53. Civil Dark: 21:38 - 04:18. Nautical Dark: 22:36 - 03:19. Astro Dark: 00:16 - 01:35

Total Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
8
17
32
36
37
38
32

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
8
17
31
34
35
36
27

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)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
2
2
2
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
17
9
1
6
7
5
8
7
3
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)

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

Chance of Frost

Temperature (°C)

19
21
23
24
26
27
27
27
27
26
24
22
20
18
17
16
16
16
16
17
17
17
17
17

Feels Like (°C)

20
22
24
25
26
27
27
27
27
26
25
24
22
21
21
20
20
20
17
17
17
17
17
18

Dew Point (°C)

12
13
14
14
14
13
13
13
14
16
16
17
15
15
14
14
14
14
14
14
15
12
10
8

Relative Humidity (%)

63
60
55
52
47
43
41
42
46
54
61
72
75
78
83
85
87
89
87
86
85
74
65
57

Pressure (mb)

1029
1029
1028
1028
1027
1026
1026
1025
1024
1024
1024
1023
1024
1024
1024
1024
1024
1023
1023
1023
1022
1023
1023
1024

Ozone (du)

316
318
320
320
321
320
318
318
319
320
320
320
319
319
319
319
319
319
320
321
322
324
326
328

Wednesday 27

Waxing Gibbous 89%

17:14

03:08

09 OK
10 OK
11 OK
12 OK
13 OK
14 Good
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

Sun - Rise: 04:59, Set: 20:57, Transit: 12:59. Moon - Rise: 17:14, Set: 03:08. Civil Dark: 21:39 - 04:17. Nautical Dark: 22:38 - 03:18. Astro Dark: 00:22 - 01:28

Total Clouds (% Sky Obscured)

25
15
15
14
14
10
9
6
6
4
3
5
8
13
12
7
0
1
1
1
2
2
4
5

Low Clouds (% Sky Obscured)

15
0
0
0
0
0
0
0
1
1
2
5
8
13
12
7
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)

1
2
2
2
5
5
5
4
2
1
0
0
0
0
0
0
0
0
0
1
1
2
2
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 (%)

2
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
13
14
15
16
16
16
17
17
15
12
10
9
7
6
6
5
4
4
4
5
5
5
6

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

16
15
14
14
14
14
15
15
14
15
15
15
11
11
12
11
11
10
7
7
7
7
7
7

Dew Point (°C)

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

Relative Humidity (%)

49
42
36
35
35
35
37
39
41
46
52
58
63
67
72
76
78
81
84
87
90
82
76
71

Pressure (mb)

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

Ozone (du)

330
332
334
332
331
329
330
330
331
334
337
339
340
341
341
341
341
341
340
340
340
340
340
340

Thursday 28

Waxing Gibbous 94%

18:27

03:25

09 Good
10 Good
11 Good
12 OK
13 OK
14 OK
15 OK
16 OK
17 OK
18 OK
19 OK
20 OK
21 Good
22 Good
23 Good
00 Good
01 Good

Sun - Rise: 04:58, Set: 20:58, Transit: 12:59. Moon - Rise: 18:27, Set: 03:25. Civil Dark: 21:41 - 04:16. Nautical Dark: 22:40 - 03:16. Astro Dark: 00:29 - 01:19

Total Clouds (% Sky Obscured)

6
7
15
23
31
28
27
26
27
25
22
21
17
12
9
5
1

Low Clouds (% Sky Obscured)

0
0
5
9
16
13
8
2
2
2
3
2
2
1
1
0
0

Medium Clouds (% Sky Obscured)

0
0
1
2
2
9
20
26
27
25
22
21
13
6
4
2
0

High Clouds (% Sky Obscured)

1
1
3
5
7
5
3
1
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

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
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

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

13
15
16
17
19
20
20
19
19
18
16
15
14
12
10
10
9

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

61
52
45
40
36
32
34
35
39
43
50
58
63
68
77
77
80

Pressure (mb)

1025
1025
1025
1024
1023
1023
1022
1022
1022
1022
1022
1022
1023
1024
1024
1024
1025

Ozone (du)

341
342
343
343
343
343
344
344
345
344
344
344
345
346
347
347
347

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

Generated: 22/05/26 09:32:04. Forecast: 22/05/26 to 28/05/26. Timezone: UTC+2.00