Clear Outside v1.0 - International Weather Forecasts For Astronomers

Thursday 21

Waxing Crescent 42%

10:59

01:40

23 Bad
00 Bad
01 OK
02 OK
03 OK
04 OK
05 OK
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
19 Bad
20 Bad
21 OK
22 Good

Sun - Rise: 05:05, Set: 20:51, Transit: 12:58. Moon - Rise: 10:59, Set: 01:40. Civil Dark: 21:32 - 04:24. Nautical Dark: 22:29 - 03:28. Astro Dark: 23:51 - 02:01

Total Clouds (% Sky Obscured)

59
62
41
31
33
38
23
28
69
69
73
75
68
62
95
99
100
79
78
84
63
50
34
4

Low Clouds (% Sky Obscured)

1
1
0
0
8
27
18
5
1
1
0
26
44
62
54
58
21
3
13
6
0
0
0
0

Medium Clouds (% Sky Obscured)

55
31
20
30
30
35
23
25
2
2
0
0
0
0
43
46
50
17
53
3
2
1
3
2

High Clouds (% Sky Obscured)

53
4
4
4
4
6
4
8
60
66
73
62
52
25
63
93
100
73
70
84
62
50
33
2

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

Chance of Frost

Temperature (°C)

15
14
12
11
10
10
10
10
12
15
17
19
20
21
22
23
23
23
23
23
22
20
18
16

Feels Like (°C)

14
14
13
12
12
11
11
12
14
15
17
19
20
21
22
22
21
22
22
22
22
19
17
17

Dew Point (°C)

11
10
9
9
8
8
8
8
9
11
12
13
13
13
13
13
14
13
13
14
16
16
14
13

Relative Humidity (%)

76
80
83
84
85
87
87
88
83
78
73
69
64
60
56
54
56
54
53
58
67
75
79
82

Pressure (mb)

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

Ozone (du)

337
337
339
339
338
337
334
331
330
328
328
329
329
327
326
326
327
328
328
329
333
335
337
338

Friday 22

Waxing Crescent 53%

12:20

01:59

23 Good
00 Good
01 Good
02 Good
03 Bad
04 Bad
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
19 OK
20 OK
21 Good
22 Bad

Sun - Rise: 05:04, Set: 20:52, Transit: 12:58. Moon - Rise: 12:20, Set: 01:59. Civil Dark: 21:34 - 04:23. Nautical Dark: 22:31 - 03:26. Astro Dark: 23:56 - 01:56

Total Clouds (% Sky Obscured)

0
3
5
6
52
63
6
4
4
4
4
4
4
7
8
6
5
4
5
5
20
30
7
49

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
3
6
2
0
0
0
0
3
3
3
15

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
3

High Clouds (% Sky Obscured)

0
3
3
4
52
63
4
4
4
4
4
3
4
4
4
4
4
4
4
5
10
12
2
24

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)

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

Chance of Frost

Temperature (°C)

15
15
14
14
13
12
12
12
14
16
18
20
22
23
24
25
25
26
26
25
25
23
20
19

Feels Like (°C)

17
16
16
15
15
13
12
14
16
19
21
23
24
25
26
27
28
28
28
28
28
25
23
21

Dew Point (°C)

13
12
12
12
12
11
11
11
11
13
13
14
14
14
14
15
15
15
15
15
17
17
15
15

Relative Humidity (%)

85
86
87
89
92
92
92
92
86
79
73
68
61
57
55
53
53
52
51
51
62
68
72
78

Pressure (mb)

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

Ozone (du)

339
340
341
342
342
341
339
337
336
337
338
337
336
337
337
336
335
331
329
330
331
331
330
330

Saturday 23

First Quarter 64%

13:37

02:15

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

Sun - Rise: 05:03, Set: 20:54, Transit: 12:58. Moon - Rise: 13:37, Set: 02:15. Civil Dark: 21:35 - 04:22. Nautical Dark: 22:33 - 03:24. Astro Dark: 00:00 - 01:51

Total Clouds (% Sky Obscured)

55
62
25
33
35
12
28
5
4
10
8
37
32
46
49
46
37
70
74
59
56
19
38
35

Low Clouds (% Sky Obscured)

21
18
21
0
2
4
0
0
0
0
0
13
12
10
13
4
0
16
39
1
10
2
5
7

Medium Clouds (% Sky Obscured)

6
25
9
13
21
0
0
2
4
3
8
16
16
20
18
24
16
19
22
9
7
4
2
1

High Clouds (% Sky Obscured)

25
29
6
32
29
12
28
4
0
4
0
11
6
17
22
19
16
47
14
49
45
11
28
20

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
8
4
18
9
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)

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

Chance of Frost

Temperature (°C)

17
16
15
15
14
14
14
14
16
19
21
23
24
26
26
27
27
27
27
26
26
24
22
20

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

82
85
87
89
90
90
90
90
85
78
74
68
62
58
53
50
48
47
50
55
61
68
74
78

Pressure (mb)

1028
1028
1028
1028
1029
1029
1029
1029
1029
1029
1029
1029
1029
1029
1029
1028
1028
1027
1027
1027
1027
1027
1028
1029

Ozone (du)

329
328
328
328
332
336
335
333
332
332
333
334
333
331
330
328
327
324
320
318
317
317
316
314

Sunday 24

Waxing Gibbous 73%

14:50

02:28

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

Sun - Rise: 05:02, Set: 20:55, Transit: 12:58. Moon - Rise: 14:50, Set: 02:28. Civil Dark: 21:36 - 04:20. Nautical Dark: 22:34 - 03:22. Astro Dark: 00:05 - 01:46

Total Clouds (% Sky Obscured)

10
10
25
48
55
43
32
33
39
30
34
35
11
9
3
2
2
2
2
2
2
5
5
2

Low Clouds (% Sky Obscured)

5
3
2
2
0
0
0
0
0
0
12
17
7
1
0
0
0
0
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

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

High Clouds (% Sky Obscured)

2
2
4
11
15
11
7
16
26
25
23
25
2
6
2
2
2
2
1
1
1
2
2
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
1
3
3
1
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)

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

Chance of Frost

Temperature (°C)

18
18
17
16
15
15
14
15
17
18
20
22
23
24
25
26
26
26
26
25
24
23
20
18

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

82
85
86
89
90
92
93
93
87
81
74
68
61
56
51
46
45
44
43
50
58
64
64
66

Pressure (mb)

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

Ozone (du)

312
311
310
310
310
311
311
310
310
311
311
311
311
311
311
311
311
310
310
309
309
309
311
312

Monday 25

Waxing Gibbous 82%

16:03

02:40

23 Good
00 Good
01 Good
02 Good
03 Good
04 OK
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
19 Good
20 Good
21 Good
22 Good

Sun - Rise: 05:01, Set: 20:56, Transit: 12:59. Moon - Rise: 16:03, Set: 02:40. Civil Dark: 21:38 - 04:19. Nautical Dark: 22:36 - 03:21. Astro Dark: 00:10 - 01:41

Total Clouds (% Sky Obscured)

1
1
2
8
14
19
12
5
0
0
0
0
0
0
0
0
0
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
8
14
19
12
5
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

0
0
0
1
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

17
17
17
15
15
14
13
15
17
19
21
23
24
25
26
26
26
26
26
26
26
25
19
19

Dew Point (°C)

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

Relative Humidity (%)

69
74
76
79
80
81
83
80
74
67
65
62
57
53
50
47
47
46
46
53
61
69
72
76

Pressure (mb)

1029
1029
1029
1029
1029
1029
1029
1029
1029
1029
1029
1029
1029
1028
1027
1027
1026
1026
1025
1025
1025
1025
1025
1025

Ozone (du)

311
309
309
308
308
310
311
310
311
312
314
316
318
320
321
321
321
321
321
320
320
319
319
318

Tuesday 26

Waxing Gibbous 89%

17:14

02:53

23 Good
00 Good
01 Good
02 Good
03 OK
04 OK
05 OK
06 OK
07 Bad
08 OK
09 OK
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

Sun - Rise: 05:00, Set: 20:57, Transit: 12:59. Moon - Rise: 17:14, Set: 02:53. Civil Dark: 21:39 - 04:18. Nautical Dark: 22:38 - 03:19. Astro Dark: 00:16 - 01:35

Total Clouds (% Sky Obscured)

1
2
2
4
9
14
28
39
49
37
24
11
8
6
5
5
4
4
4
4
4
7
11
15

Low Clouds (% Sky Obscured)

0
0
0
1
2
3
13
20
28
23
13
0
0
0
0
0
0
0
1
1
2
7
11
15

Medium Clouds (% Sky Obscured)

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

High Clouds (% Sky Obscured)

0
0
1
2
3
3
3
3
4
3
2
1
1
1
1
2
3
4
3
1
1
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 (%)

17
9
1
3
2
1
3
3
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
5
6
6
6
8
10
12
12
13
13
14
15
16
16
16
16
14
12
11
9
7

Chance of Frost

Temperature (°C)

16
15
15
15
14
14
15
15
16
16
17
18
19
19
20
20
20
20
20
18
17
16
14
13

Feels Like (°C)

19
19
18
18
15
15
16
15
15
15
16
15
14
15
15
15
17
16
16
16
16
16
12
12

Dew Point (°C)

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

Relative Humidity (%)

79
82
84
89
90
92
95
83
72
62
53
46
38
38
37
36
37
38
39
44
49
56
58
62

Pressure (mb)

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

Ozone (du)

318
318
318
318
318
318
318
320
322
324
327
329
331
333
334
335
333
331
329
329
329
329
334
338

Wednesday 27

Waxing Gibbous 94%

18:27

03:08

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 Good
18 OK
19 OK

Sun - Rise: 04:59, Set: 20:58, Transit: 12:59. Moon - Rise: 18:27, Set: 03:08. Civil Dark: 21:41 - 04:17. Nautical Dark: 22:40 - 03:18. Astro Dark: 00:22 - 01:28

Total Clouds (% Sky Obscured)

13
11
8
8
6
4
4
2
0
1
2
3
8
11
15
14
13
11
16
24
23

Low Clouds (% Sky Obscured)

13
7
0
0
0
0
0
0
0
0
0
0
4
10
15
14
9
1
1
2
2

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
7
12
11
16
17
16

High Clouds (% Sky Obscured)

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

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 (%)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

13
11
11
10
6
7
7
8
7
7
14
14
14
15
15
16
20
20
19
19
20

Dew Point (°C)

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

Relative Humidity (%)

65
68
72
75
78
81
84
78
72
67
61
54
49
46
42
39
37
36
35
41
50

Pressure (mb)

1026
1027
1027
1028
1028
1028
1028
1029
1029
1029
1029
1028
1028
1028
1027
1027
1026
1026
1025
1025
1025

Ozone (du)

343
344
345
345
346
346
347
345
344
343
342
341
340
341
341
341
341
341
341
341
342

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

Generated: 21/05/26 23:17:25. Forecast: 21/05/26 to 27/05/26. Timezone: UTC+2.00