Clear Outside v1.0 - International Weather Forecasts For Astronomers

Wednesday 18

Waning Crescent 0%

06:05

17:43

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

Sun - Rise: 06:05, Set: 18:11, Transit: 12:09. Moon - Rise: 06:05, Set: 17:43. Civil Dark: 18:44 - 05:33. Nautical Dark: 19:22 - 04:55. Astro Dark: 20:01 - 04:15

Total Clouds (% Sky Obscured)

15
30
15
3
12
23
49
44
74
100
100
100
100
98
100
100
90
44
4
1
0
19
39
43

Low Clouds (% Sky Obscured)

15
5
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
1
13
23

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
8
27
63
98
99
100
100
97
100
100
90
44
4
0
0
19
39
43

High Clouds (% Sky Obscured)

0
0
0
0
6
18
49
43
39
62
57
59
34
35
9
4
3
3
0
0
0
6
18
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
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
12
12
11
9
8
7
6
5
5
4
3
3
3
3
3
2
2
3
4
4
4
4
4

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

10
10
10
10
9
7
5
4
3
3
3
2
3
2
2
2
2
2
5
7
9
10
11
12

Dew Point (°C)

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

Relative Humidity (%)

47
47
49
51
59
64
68
70
72
74
74
74
75
75
75
75
75
75
66
57
52
49
46
44

Pressure (mb)

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

Ozone (du)

368
371
377
379
381
389
396
403
406
407
405
404
403
402
402
403
403
403
403
402
400
400
400
398

Thursday 19

New Moon 3%

06:19

19:05

14 OK
15 Bad
16 Bad
17 Bad
18 Bad
19 OK
20 OK
21 OK
22 OK
23 Bad
00 Good
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

Sun - Rise: 06:03, Set: 18:13, Transit: 12:09. Moon - Rise: 06:19, Set: 19:05. Civil Dark: 18:45 - 05:31. Nautical Dark: 19:23 - 04:52. Astro Dark: 20:03 - 04:13

Total Clouds (% Sky Obscured)

45
79
90
97
64
46
32
30
26
52
15
55
62
100
71
70
55
57
54
98
97
59
92
100

Low Clouds (% Sky Obscured)

4
9
26
35
12
27
19
4
7
6
3
1
1
0
0
1
18
8
17
30
38
23
66
64

Medium Clouds (% Sky Obscured)

45
35
65
63
26
2
1
0
19
2
2
52
48
43
59
69
49
51
40
96
94
59
78
100

High Clouds (% Sky Obscured)

18
66
87
87
51
15
4
24
10
39
8
22
55
100
45
0
0
0
0
0
4
4
1
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
5
6

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

13
13
11
9
6
5
5
5
6
5
5
4
2
1
1
1
1
2
4
6
6
7
8
8

Dew Point (°C)

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

Relative Humidity (%)

43
41
41
48
55
60
65
66
69
69
71
72
73
75
77
77
80
77
70
63
60
57
56
61

Pressure (mb)

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

Ozone (du)

395
391
388
384
380
378
375
367
362
358
358
361
367
376
377
383
385
381
379
380
389
395
396
397

Friday 20

Waxing Crescent 8%

06:36

20:29

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

Sun - Rise: 06:01, Set: 18:15, Transit: 12:08. Moon - Rise: 06:36, Set: 20:29. Civil Dark: 18:47 - 05:28. Nautical Dark: 19:25 - 04:50. Astro Dark: 20:05 - 04:10

Total Clouds (% Sky Obscured)

99
99
99
92
87
91
86
89
91
95
97
99
100
100
100
100
100
100
96
100
94
89
83
87

Low Clouds (% Sky Obscured)

66
64
30
80
77
76
58
67
75
86
94
98
100
100
99
95
100
100
96
100
88
74
61
59

Medium Clouds (% Sky Obscured)

96
96
98
83
74
57
43
34
23
22
18
15
6
10
14
44
55
44
32
65
62
68
60
52

High 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

ISS Passover

Visibility (miles)

9
9
7
9
9
9
9
9
9
9
9
9
9
9
9
9
6
9
9
9
6
1
2
7

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
Light Rain
None
None
Light Rain
Light Rain
Light Rain
Light Rain
None

Precipitation Probability (%)

21
35
37
28
33
26
20
7
13
6
10
9
12
15
27
46
66
42
46
64
64
79
65
45

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.6
0
0
0.4
0.4
0.7
0.4
0

Wind Speed/Direction (mph)

10
10
9
8
6
4
4
5
5
6
5
5
4
4
5
5
5
5
5
6
9
9
9
10

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

71
73
84
84
78
82
82
81
81
83
83
83
85
83
85
86
88
86
86
79
79
91
93
93

Pressure (mb)

1019
1019
1019
1019
1020
1019
1019
1019
1019
1019
1019
1018
1018
1018
1017
1017
1017
1017
1018
1018
1018
1017
1017
1017

Ozone (du)

398
397
397
397
397
398
400
400
401
403
405
405
405
406
407
413
424
436
444
447
446
443
441
439

Saturday 21

Waxing Crescent 8%

06:57

21:57

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

Sun - Rise: 05:58, Set: 18:16, Transit: 12:08. Moon - Rise: 06:57, Set: 21:57. Civil Dark: 18:49 - 05:26. Nautical Dark: 19:27 - 04:48. Astro Dark: 20:07 - 04:08

Total Clouds (% Sky Obscured)

93
100
99
98
97
82
67
49
13
6
6
12
30
32
38
44
45
38
31
24
33
40
43
48

Low Clouds (% Sky Obscured)

59
59
51
43
40
40
39
44
5
2
2
11
19
27
36
41
42
33
27
21
27
33
43
44

Medium Clouds (% Sky Obscured)

48
60
55
54
58
37
18
6
5
2
0
0
0
0
0
0
0
0
0
0
0
0
0
9

High Clouds (% Sky Obscured)

0
0
0
0
0
2
2
2
1
1
2
0
11
2
0
0
0
0
0
0
0
0
0
0

ISS Passover

Visibility (miles)

6
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 (%)

25
8
8
6
3
6
6
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)

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

Chance of Frost

Temperature (°C)

8
8
8
8
7
7
6
5
5
4
3
2
2
2
2
2
2
2
4
6
8
9
11
12

Feels Like (°C)

4
4
4
4
3
3
3
2
1
2
2
0
1
-0
0
0
1
1
2
4
5
6
8
9

Dew Point (°C)

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

Relative Humidity (%)

93
90
85
84
82
81
81
82
82
86
88
86
86
85
85
86
88
85
73
66
59
53
49
45

Pressure (mb)

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

Ozone (du)

440
436
424
414
409
404
402
398
395
394
397
399
399
400
395
393
392
392
397
399
401
395
390
387

Sunday 22

Waxing Crescent 16%

07:26

23:26

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

Sun - Rise: 05:56, Set: 18:18, Transit: 12:08. Moon - Rise: 07:26, Set: 23:26. Civil Dark: 18:50 - 05:24. Nautical Dark: 19:29 - 04:45. Astro Dark: 20:08 - 04:05

Total Clouds (% Sky Obscured)

51
67
64
39
67
69
32
24
17
25
33
35
35
38
38
41
43
47
50
49
46
53
54
76

Low Clouds (% Sky Obscured)

43
55
51
29
54
54
22
15
7
11
15
18
17
17
16
17
17
17
17
17
12
7
2
21

Medium Clouds (% Sky Obscured)

19
26
27
24
21
14
9
3
9
15
20
30
34
31
36
39
40
35
30
30
29
23
13
13

High Clouds (% Sky Obscured)

0
1
1
1
1
0
1
1
1
2
4
4
4
4
23
41
43
47
50
49
46
32
0
27

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
7

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

42
39
39
45
56
60
61
63
69
72
73
76
76
79
79
79
79
79
71
64
58
54
50
46

Pressure (mb)

1016
1015
1015
1015
1015
1016
1016
1016
1016
1016
1016
1015
1015
1015
1015
1015
1015
1015
1015
1015
1015
1014
1014
1013

Ozone (du)

385
385
384
384
384
385
387
389
391
391
390
389
391
393
395
396
398
399
400
402
403
404
404
404

Monday 23

Waxing Crescent 26%

08:07

00:52

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

Sun - Rise: 05:54, Set: 18:19, Transit: 12:08. Moon - Rise: 08:07, Set: 00:52. Civil Dark: 18:52 - 05:22. Nautical Dark: 19:30 - 04:43. Astro Dark: 20:10 - 04:03

Total Clouds (% Sky Obscured)

78
89
90
94
100
98
97
95
88
83
79
84
89
95
95
95
94
87
82
76
83
93
100
100

Low Clouds (% Sky Obscured)

40
57
59
63
65
62
64
64
57
55
51
62
75
89
80
71
61
56
52
49
53
56
61
68

Medium Clouds (% Sky Obscured)

14
19
15
20
20
37
51
62
52
41
29
49
69
90
79
69
58
59
56
53
67
83
96
97

High Clouds (% Sky Obscured)

53
85
90
90
90
72
55
37
28
20
14
18
24
34
53
74
94
87
82
76
74
73
83
75

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
8
7
6
7
8
9
9
8
8
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 (%)

9
11
16
15
14
15
12
4
5
5
4
16
28
41
48
45
31
23
21
23
29
32
33
33

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)

8
8
8
7
6
6
6
6
7
8
8
9
10
12
16
14
14
12
12
12
12
12
12
12

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

11
11
10
10
9
9
6
5
5
5
4
4
2
1
1
1
1
1
-2
-1
-0
-0
-0
-0

Dew Point (°C)

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

Relative Humidity (%)

48
52
54
56
60
63
67
69
73
74
75
74
79
82
88
82
77
72
69
70
67
58
51
45

Pressure (mb)

1013
1013
1012
1012
1013
1013
1013
1013
1013
1013
1013
1013
1013
1013
1013
1013
1014
1014
1014
1015
1015
1015
1014
1014

Ozone (du)

405
406
407
407
408
409
410
412
413
412
411
410
416
422
428
438
448
458
458
457
457
457
457
457

Tuesday 24

Waxing Crescent 37%

09:04

02:06

14 Bad
15 Bad
16 Bad
17 Bad
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

Sun - Rise: 05:52, Set: 18:21, Transit: 12:07. Moon - Rise: 09:04, Set: 02:06. Civil Dark: 18:53 - 05:19. Nautical Dark: 19:32 - 04:41. Astro Dark: 20:12 - 04:00

Total Clouds (% Sky Obscured)

100
99
99
98
97
98
99
100
86
68
53
45
37
29
41
63
63

Low Clouds (% Sky Obscured)

78
86
72
56
39
33
26
23
24
30
40
45
37
29
41
54
54

Medium Clouds (% Sky Obscured)

97
97
95
94
93
95
97
100
86
68
53
45
37
29
41
45
45

High Clouds (% Sky Obscured)

66
24
17
15
8
39
69
100
86
68
53
45
37
29
41
63
63

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
Very Light Rain
None
None
None
Very Light Rain

Precipitation Probability (%)

34
33
37
39
31
28
23
13
12
11
5
29
52
42
44
48
58

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0.3
0
0
0
0.3

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

44
43
42
47
52
58
62
67
73
76
80
85
86
88
89
86
83

Pressure (mb)

1014
1014
1013
1013
1013
1013
1013
1014
1014
1014
1014
1014
1014
1014
1014
1015
1015

Ozone (du)

460
464
467
468
469
470
469
468
468
462
456
451
449
447
445
440
434

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

Generated: 18/03/26 14:15:53. Forecast: 18/03/26 to 24/03/26. Timezone: UTC+1.00