Clear Outside v1.0 - International Weather Forecasts For Astronomers

Friday 27

Waxing Gibbous 85%

12:28

05:40

09 Bad
10 Bad
11 Bad
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 OK
06 OK
07 OK
08 Good

Sun - Rise: 06:46, Set: 17:40, Transit: 12:14. Moon - Rise: 12:28, Set: 05:40. Civil Dark: 18:13 - 06:13. Nautical Dark: 18:50 - 05:36. Astro Dark: 19:28 - 04:58

Total Clouds (% Sky Obscured)

69
76
70
9
8
8
7
11
3
4
4
3
3
15
18
12
10
7
2
3
12
16
18
8

Low Clouds (% Sky Obscured)

48
10
0
0
0
0
0
0
0
0
0
0
0
15
18
12
10
7
2
0
12
16
18
8

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)

17
44
16
6
8
8
5
11
3
4
4
3
3
3
3
0
0
0
0
3
3
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
2
4
4
4
5
5
5
5
4
4
4
4
5
5
5
5
4
5
4
3
4
4

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

80
72
66
62
60
56
54
58
69
77
78
80
79
81
82
85
86
89
89
89
91
89
89
88

Pressure (mb)

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

Ozone (du)

365
363
361
361
362
363
363
363
362
361
361
361
360
360
361
361
361
361
361
362
365
368
370
370

Saturday 28

Waxing Gibbous 92%

13:52

06:05

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

Sun - Rise: 06:44, Set: 17:42, Transit: 12:14. Moon - Rise: 13:52, Set: 06:05. Civil Dark: 18:14 - 06:11. Nautical Dark: 18:52 - 05:34. Astro Dark: 19:30 - 04:56

Total Clouds (% Sky Obscured)

4
7
12
14
6
4
4
6
7
7
63
93
43
35
66
92
98
100
100
99
98
98
100
78

Low Clouds (% Sky Obscured)

0
0
12
14
2
0
0
0
0
0
29
40
30
0
24
43
49
57
52
61
59
56
74
58

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
2
6
27
35
40
35
46
40
48
48
53
55
58
79
82
71

High Clouds (% Sky Obscured)

4
5
4
4
4
4
3
5
7
4
44
67
7
5
18
56
75
61
38
54
21
10
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
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
13
2
9
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
4
5
4
4
4
3
3
3
4
3
2
2
1
1
2
2
2
2
1
2
1
1
1

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

79
71
67
62
59
57
56
56
65
70
74
78
81
82
83
86
83
85
85
85
85
85
86
86

Pressure (mb)

1024
1024
1023
1023
1022
1022
1022
1022
1022
1022
1022
1023
1023
1024
1024
1024
1025
1025
1025
1025
1026
1026
1026
1027

Ozone (du)

370
371
372
372
372
377
378
381
379
378
378
375
372
370
371
372
375
376
377
378
377
377
378
380

Sunday 1

Waxing Gibbous 97%

15:18

06:24

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

Sun - Rise: 06:42, Set: 17:44, Transit: 12:14. Moon - Rise: 15:18, Set: 06:24. Civil Dark: 18:16 - 06:09. Nautical Dark: 18:54 - 05:32. Astro Dark: 19:31 - 04:54

Total Clouds (% Sky Obscured)

69
56
71
83
99
100
100
90
62
48
36
31
37
44
43
49
49
50
41
40
42
61
89
91

Low Clouds (% Sky Obscured)

45
47
51
62
66
76
63
40
11
4
4
3
26
36
36
49
49
50
41
40
42
61
89
91

Medium Clouds (% Sky Obscured)

69
56
71
61
65
85
90
52
33
34
26
18
13
12
19
28
24
19
19
23
22
31
24
18

High Clouds (% Sky Obscured)

17
6
8
31
70
88
100
68
30
10
7
4
4
4
4
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
Very Light Rain
None
Very Light Rain
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

2
21
45
38
45
38
17
14
3
2
2
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Amount (mm)

0
0
0.3
0
0.3
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
5
6
6
7
8
7
5
4
4
3
3
2
2
2
2
1
1
1
1
1
2
2

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

77
69
62
57
53
52
53
55
60
64
65
66
69
68
71
72
73
73
75
76
76
80
79
76

Pressure (mb)

1027
1027
1027
1027
1026
1026
1026
1026
1026
1027
1027
1027
1027
1027
1027
1027
1027
1027
1027
1027
1027
1027
1027
1027

Ozone (du)

381
385
385
384
382
382
382
384
383
385
387
385
388
394
398
399
400
397
392
391
396
401
402
401

Monday 2

Waxing Gibbous 100%

16:40

06:39

09 Bad
10 Bad
11 Bad
12 Bad
13 Bad
14 OK
15 OK
16 OK
17 OK
18 OK
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

Sun - Rise: 06:39, Set: 17:45, Transit: 12:13. Moon - Rise: 16:40, Set: 06:39. Civil Dark: 18:18 - 06:07. Nautical Dark: 18:55 - 05:30. Astro Dark: 19:33 - 04:52

Total Clouds (% Sky Obscured)

100
98
97
95
55
29
20
23
27
32
53
62
64
63
53
51
58
66
77
82
82
72
76
72

Low Clouds (% Sky Obscured)

100
98
96
94
55
29
19
23
26
32
52
62
64
63
50
47
50
56
67
67
67
72
76
72

Medium Clouds (% Sky Obscured)

11
7
3
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
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
1
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
2
0
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
3
4
4
5
5
5
5
4
4
4
4
4
4
3
3
3
3
2
2
2
2

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

71
70
69
65
63
61
61
64
73
79
82
81
79
78
79
83
86
88
86
88
89
89
89
86

Pressure (mb)

1027
1027
1027
1026
1026
1025
1025
1024
1024
1025
1025
1025
1025
1025
1026
1026
1026
1026
1026
1026
1026
1027
1027
1027

Ozone (du)

400
399
399
398
396
396
398
399
400
399
397
397
399
401
401
402
402
403
404
405
405
406
406
407

Tuesday 3

Full Moon 100%

17:59

06:52

09 Bad
10 Bad
11 Bad
12 Bad
13 OK
14 Good
15 Good
16 Good
17 OK
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

Sun - Rise: 06:37, Set: 17:47, Transit: 12:13. Moon - Rise: 17:59, Set: 06:52. Civil Dark: 18:19 - 06:05. Nautical Dark: 18:57 - 05:28. Astro Dark: 19:35 - 04:50

Total Clouds (% Sky Obscured)

66
60
50
50
30
17
6
13
31
57
83
91
97
91
86
79
85
91
96
95
93
93
76
62

Low Clouds (% Sky Obscured)

66
60
50
50
30
17
5
4
12
29
47
55
59
67
76
79
85
91
96
94
93
93
76
62

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
34
34
29
19
16
0
0
0
0
3
5
8
16
15

High Clouds (% Sky Obscured)

0
0
0
0
1
1
2
13
26
27
17
19
21
11
3
0
2
6
14
19
15
0
22
46

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

4
5
6
7
8
10
11
12
11
8
8
8
7
7
7
7
6
5
5
5
5
5
5
4

Dew Point (°C)

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

Relative Humidity (%)

77
70
64
61
57
54
52
53
60
68
73
73
72
73
75
75
76
78
79
80
82
83
85
80

Pressure (mb)

1027
1027
1027
1027
1027
1026
1026
1026
1026
1026
1026
1024
1025
1025
1025
1025
1025
1025
1025
1025
1025
1025
1025
1026

Ozone (du)

409
410
412
413
413
413
411
411
412
413
413
414
414
415
413
411
409
406
402
399
396
392
389
391

Wednesday 4

Waning Gibbous 97%

19:15

07:05

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

Sun - Rise: 06:35, Set: 17:49, Transit: 12:13. Moon - Rise: 19:15, Set: 07:05. Civil Dark: 18:21 - 06:03. Nautical Dark: 18:58 - 05:25. Astro Dark: 19:36 - 04:48

Total Clouds (% Sky Obscured)

51
45
43
38
40
33
28
24
20
20
27
37
48
59
72
83
86
88
89
85
81
68
51
34

Low Clouds (% Sky Obscured)

51
37
19
1
1
1
1
3
5
6
15
27
38
42
47
51
56
62
69
65
59
51
34
19

Medium Clouds (% Sky Obscured)

19
19
11
11
11
7
7
9
13
20
24
32
36
49
58
67
61
55
49
53
60
56
38
29

High Clouds (% Sky Obscured)

51
43
22
0
0
0
0
0
0
0
3
5
8
18
27
36
37
37
35
22
9
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
1
1
0
7
8
5
11
12
3
3
2
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

3
3
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
3
3
3
3

Relative Humidity (%)

76
71
68
63
59
57
55
53
57
61
66
68
72
74
78
79
82
82
82
84
85
86
86
79

Pressure (mb)

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

Ozone (du)

393
395
398
401
404
404
405
406
406
407
408
410
412
414
422
429
437
426
415
404
400
397
394
393

Thursday 5

Waning Gibbous 93%

20:30

07:18

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

Sun - Rise: 06:33, Set: 17:50, Transit: 12:13. Moon - Rise: 20:30, Set: 07:18. Civil Dark: 18:23 - 06:01. Nautical Dark: 19:00 - 05:23. Astro Dark: 19:38 - 04:45

Total Clouds (% Sky Obscured)

17
14
10
7
9
11
14
18
19
21
34
52
64
71
78
85

Low Clouds (% Sky Obscured)

3
3
3
3
5
8
11
10
9
9
15
22
31
39
48
58

Medium Clouds (% Sky Obscured)

17
14
10
7
7
8
8
15
19
21
32
37
36
35
37
35

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
32
64
85

ISS Passover

Visibility (miles)

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

Precipitation Type

None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

0
0
0
0
2
3
3
9
13
7
9
10
6
14
17
20

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

5
6
7
8
8
13
12
11
11
11
12
7
7
8
7
7

Dew Point (°C)

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

Relative Humidity (%)

74
67
60
56
50
49
49
47
53
59
67
70
73
77
77
78

Pressure (mb)

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

Ozone (du)

393
393
390
388
386
384
383
382
384
386
388
393
399
404
401
398

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

Generated: 27/02/26 08:49:00. Forecast: 27/02/26 to 05/03/26. Timezone: UTC+1.00