Clear Outside v1.0 - International Weather Forecasts For Astronomers

Monday 18

Waxing Crescent 11%

06:47

23:41

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

Sun - Rise: 05:09, Set: 20:47, Transit: 12:58. Moon - Rise: 06:47, Set: 23:41. Civil Dark: 21:28 - 04:28. Nautical Dark: 22:23 - 03:33. Astro Dark: 23:39 - 02:13

Total Clouds (% Sky Obscured)

40
38
47
71
59
65
78
79
70
64
59
36
61
88
95
91
83
52
74
100
74
76
78
72

Low Clouds (% Sky Obscured)

1
2
9
21
22
17
16
19
20
13
17
31
32
53
63
54
58
52
63
63
48
51
39
5

Medium Clouds (% Sky Obscured)

24
26
31
33
18
28
49
37
27
20
35
27
32
60
70
66
69
32
26
52
26
18
51
56

High Clouds (% Sky Obscured)

4
4
5
7
7
4
4
6
49
10
9
3
41
23
9
6
6
3
0
4
3
3
65
65

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
7
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
Light Rain
None
None
None
None

Precipitation Probability (%)

0
0
0
0
0
0
0
0
0
0
1
13
32
36
38
38
30
27
38
57
33
28
21
7

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.4
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

70
75
80
78
76
80
82
81
74
73
69
63
60
55
53
51
48
45
44
52
60
64
67
72

Pressure (mb)

1015
1015
1016
1016
1016
1017
1017
1017
1018
1018
1018
1019
1019
1018
1018
1018
1018
1017
1017
1017
1018
1018
1019
1019

Ozone (du)

384
384
384
384
384
384
383
382
383
386
389
391
392
389
381
377
376
373
369
366
364
363
361
361

Tuesday 19

Waxing Crescent 20%

08:07

00:36

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 Bad
19 OK
20 OK
21 Bad
22 OK

Sun - Rise: 05:08, Set: 20:48, Transit: 12:58. Moon - Rise: 08:07, Set: 00:36. Civil Dark: 21:29 - 04:27. Nautical Dark: 22:25 - 03:31. Astro Dark: 23:43 - 02:09

Total Clouds (% Sky Obscured)

95
88
96
87
78
86
88
93
98
100
100
100
98
99
100
100
97
90
84
73
34
42
54
41

Low Clouds (% Sky Obscured)

3
22
42
50
50
39
38
38
55
71
62
58
55
71
67
55
46
31
36
17
24
20
9
19

Medium Clouds (% Sky Obscured)

45
64
80
75
61
79
81
80
84
56
78
91
91
77
87
99
93
83
69
66
26
34
32
30

High Clouds (% Sky Obscured)

93
72
3
0
25
21
32
60
80
100
100
98
70
70
76
80
55
17
24
4
0
1
30
4

ISS Passover

Visibility (miles)

9
8
7
9
9
9
9
9
9
9
9
9
9
9
8
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 (%)

25
28
26
0
0
0
0
1
0
1
3
11
13
32
36
14
24
20
24
23
10
2
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
2
2
1
1
2
2
1
2
3
5
7
9
11
11
10
9
10
8
5
5
3
3

Chance of Frost

Temperature (°C)

12
11
10
10
9
9
9
9
11
13
14
16
17
18
18
17
18
18
18
18
18
16
14
13

Feels Like (°C)

11
11
10
9
9
9
8
9
11
12
12
14
15
15
14
14
15
16
16
16
17
17
15
14

Dew Point (°C)

9
8
8
8
8
7
7
7
8
9
10
10
10
10
10
11
11
10
11
10
11
12
11
10

Relative Humidity (%)

80
83
85
90
90
90
90
87
81
76
76
68
63
60
62
66
65
59
61
61
66
75
82
83

Pressure (mb)

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

Ozone (du)

360
361
363
365
364
361
360
358
355
354
354
355
357
359
360
360
361
361
362
364
364
365
363
360

Wednesday 20

Waxing Crescent 31%

09:33

01:14

23 Bad
00 Bad
01 OK
02 Bad
03 OK
04 OK
05 OK
06 OK
07 OK
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 Bad
22 OK

Sun - Rise: 05:06, Set: 20:50, Transit: 12:58. Moon - Rise: 09:33, Set: 01:14. Civil Dark: 21:31 - 04:26. Nautical Dark: 22:27 - 03:30. Astro Dark: 23:47 - 02:05

Total Clouds (% Sky Obscured)

66
64
45
45
32
19
24
31
30
50
57
63
94
83
71
82
58
90
91
50
70
53
49
36

Low Clouds (% Sky Obscured)

20
33
19
16
16
18
9
2
22
41
34
27
50
70
29
60
31
47
50
14
0
2
2
2

Medium Clouds (% Sky Obscured)

37
28
28
39
25
13
24
31
26
44
24
13
29
13
21
23
15
32
28
24
24
16
10
2

High Clouds (% Sky Obscured)

11
1
0
0
0
0
0
0
0
0
24
58
75
75
42
6
11
21
6
18
58
39
37
23

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
5
9
8
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
2
2
0
0
0
0
0
0
1
22
33
38
39
38
20
13
5
4
11
1
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
4
4
5
4
4
5
4
4
6
7
8
7
8
8
8
9
8
9
6
6
6
5
3

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

13
12
12
11
11
10
10
10
12
14
16
16
16
17
17
19
18
20
19
19
20
17
16
14

Dew Point (°C)

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

Relative Humidity (%)

86
86
83
88
90
91
91
91
83
76
70
67
64
64
65
62
58
53
57
68
65
72
78
82

Pressure (mb)

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

Ozone (du)

359
358
360
359
360
360
361
363
369
368
364
361
358
355
352
351
350
348
348
348
347
346
344
342

Thursday 21

Waxing Crescent 42%

10:59

01:40

23 OK
00 Good
01 OK
02 OK
03 OK
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 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)

21
18
22
26
37
45
45
46
80
83
76
67
76
75
85
86
80
74
83
91
100
73
33
2

Low Clouds (% Sky Obscured)

2
0
0
9
19
30
31
34
34
23
13
2
5
13
29
33
36
35
6
0
1
0
0
0

Medium Clouds (% Sky Obscured)

8
13
20
26
32
36
32
32
35
30
23
24
37
50
69
62
55
48
38
38
36
20
10
0

High Clouds (% Sky Obscured)

6
2
1
1
1
1
1
3
29
45
45
45
40
28
19
24
45
53
66
83
100
69
33
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
8
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
1
2
0
2
2
1
11
3
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
3
3
3
3
3
3
3
3
4
4
5
5
5
5
4
5
6
6
5
6
5
4

Chance of Frost

Temperature (°C)

13
12
12
11
11
10
10
11
13
15
17
18
20
21
22
22
23
22
22
22
21
20
18
17

Feels Like (°C)

14
13
12
12
11
11
11
12
14
15
16
18
19
20
21
22
23
22
21
21
21
19
18
18

Dew Point (°C)

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

Relative Humidity (%)

84
87
87
88
90
90
91
92
86
80
74
70
64
60
55
53
51
57
66
62
67
74
78
82

Pressure (mb)

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

Ozone (du)

340
339
339
337
336
336
335
333
332
331
330
330
330
328
328
329
327
328
329
331
333
335
336
336

Friday 22

Waxing Crescent 53%

12:20

01:59

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 Good
19 Good
20 Good
21 Good
22 Good

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)

1
1
0
0
0
0
2
3
3
3
2
2
5
10
14
10
6
2
3
4
5
5
6
6

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
5
10
14
10
5
1
1
1
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)

0
0
0
0
0
0
1
1
1
1
1
1
0
0
0
0
0
1
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
0
0
0
0
4
3
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
2
2
2
2
2
2
1
1
1
1
2
2
3
3
4
4
3
3
3
3
2
3
3

Chance of Frost

Temperature (°C)

16
15
14
13
13
12
11
13
14
16
18
20
21
22
23
24
24
24
24
23
22
21
19
18

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

85
84
87
86
87
87
87
89
82
77
71
66
61
57
54
51
51
51
51
56
61
68
73
79

Pressure (mb)

1029
1029
1029
1029
1029
1029
1030
1030
1030
1030
1030
1029
1029
1029
1028
1028
1027
1027
1027
1027
1026
1026
1027
1027

Ozone (du)

336
337
336
335
333
335
336
337
338
338
339
340
340
339
340
339
337
335
332
331
330
329
328
328

Saturday 23

First Quarter 64%

13:37

02:15

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

26
49
74
84
74
70
61
58
60
40
21
1
5
9
12
21
26
44
43
41
35
41
39
40

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
5
11
16
16
16
13
6
3
0

Medium Clouds (% Sky Obscured)

0
0
0
6
12
23
12
8
0
0
0
0
0
0
0
0
0
0
1
2
3
7
10
14

High Clouds (% Sky Obscured)

26
49
74
84
74
70
61
58
60
40
21
0
1
2
4
4
5
9
5
5
6
5
6
7

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
8
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
1
1
0
11
13
8
15
12
4
7
10
12
18
18
13

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

22
21
20
20
15
16
16
16
16
15
20
21
22
23
24
25
29
29
28
27
27
27
23
22

Dew Point (°C)

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

Relative Humidity (%)

87
87
86
87
87
87
87
85
81
76
70
65
59
57
53
51
53
54
55
61
66
71
76
82

Pressure (mb)

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

Ozone (du)

327
329
330
331
333
335
336
338
339
340
338
335
333
331
328
326
324
323
322
320
319
317
317
316

Sunday 24

Waxing Gibbous 73%

14:50

02:28

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 OK
12 OK
13 Good
14 Good
15 Good
16 Good
17 Good
18 Good
19 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)

50
59
68
68
66
63
67
67
66
64
62
62
45
29
10
7
5
2
1
1
0

Low Clouds (% Sky Obscured)

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

Medium Clouds (% Sky Obscured)

12
12
10
9
8
6
12
15
20
14
8
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

25
45
59
59
60
50
44
41
35
32
28
24
19
14
9
6
4
1
1
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 (%)

12
8
0
0
0
0
0
0
0
0
0
0
1
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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

21
20
20
19
16
15
16
16
15
15
19
19
19
19
20
20
24
24
23
23
23

Dew Point (°C)

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

Relative Humidity (%)

88
89
90
93
93
93
95
87
83
77
69
60
53
50
47
45
45
45
45
51
60

Pressure (mb)

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

Ozone (du)

315
314
313
312
312
312
311
311
311
311
312
313
315
315
315
315
314
314
313
313
313

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

Generated: 18/05/26 23:02:01. Forecast: 18/05/26 to 24/05/26. Timezone: UTC+2.00