Clear Outside v1.0 - International Weather Forecasts For Astronomers

Monday 23

Waxing Crescent 26%

08:07

00:52

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

58
63
64
66
92
90
89
50
39
33
29
19
19
11
22
84
100
90
70
80
100
100
100
100

Low Clouds (% Sky Obscured)

1
6
1
1
1
1
0
1
1
1
0
0
1
1
1
3
2
2
2
2
11
2
2
2

Medium Clouds (% Sky Obscured)

38
45
49
39
87
89
88
49
31
30
24
19
19
9
0
19
16
1
0
0
0
0
2
5

High Clouds (% Sky Obscured)

58
63
64
65
87
76
60
22
5
4
8
0
0
0
20
77
100
90
70
80
100
100
100
100

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
2
1
2
0
4
3
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)

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

Chance of Frost

Temperature (°C)

4
7
9
11
13
14
14
14
14
14
12
11
9
8
7
6
5
5
5
4
4
4
3
4

Feels Like (°C)

2
4
6
9
11
11
12
13
13
13
12
10
8
7
7
5
3
3
3
2
2
1
1
2

Dew Point (°C)

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

Relative Humidity (%)

71
64
59
54
48
45
43
41
41
45
51
54
57
59
62
64
66
67
69
71
71
72
72
72

Pressure (mb)

1018
1018
1018
1018
1018
1017
1017
1017
1017
1017
1018
1019
1019
1020
1020
1021
1021
1021
1021
1021
1021
1022
1022
1022

Ozone (du)

407
407
405
404
402
404
405
407
407
402
401
400
401
410
406
400
391
379
370
367
366
371
370
368

Tuesday 24

Waxing Crescent 37%

08:07

02:06

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

Sun - Rise: 05:52, Set: 18:21, Transit: 12:08. Moon - Rise: 08:07, 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)

98
100
99
75
86
96
91
84
97
97
92
87
91
96
100
100
100
100
100
100
100
100
100
87

Low Clouds (% Sky Obscured)

1
0
0
0
0
2
0
0
7
6
4
2
0
0
0
0
0
0
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

50
41
27
25
9
37
35
42
57
44
48
23
49
48
57
72
93
100
99
96
70
100
77
50

High Clouds (% Sky Obscured)

97
100
98
75
86
93
86
73
88
85
85
80
87
95
100
100
100
100
100
100
100
36
53
75

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

Chance of Frost

Temperature (°C)

6
9
11
13
14
15
15
16
15
15
13
11
10
9
9
8
8
9
9
9
9
8
8
9

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

66
61
55
52
47
41
38
37
37
44
48
52
57
61
63
65
64
64
62
61
62
64
63
63

Pressure (mb)

1022
1022
1022
1021
1020
1020
1019
1018
1018
1017
1017
1017
1017
1016
1016
1015
1014
1014
1013
1012
1011
1009
1008
1008

Ozone (du)

367
364
363
364
365
366
364
361
359
356
354
353
353
355
357
357
358
358
360
362
367
370
373
372

Wednesday 25

First Quarter 49%

09:04

03:02

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

Sun - Rise: 05:50, Set: 18:23, Transit: 12:07. Moon - Rise: 09:04, Set: 03:02. Civil Dark: 18:55 - 05:17. Nautical Dark: 19:34 - 04:38. Astro Dark: 20:14 - 03:58

Total Clouds (% Sky Obscured)

96
91
89
62
99
100
100
100
100
100
85
100
100
100
100
100
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

0
0
3
35
40
51
51
63
74
77
6
52
24
27
43
72
78
92
53
53
55
87
72
58

Medium Clouds (% Sky Obscured)

70
74
69
40
99
100
100
100
100
100
85
100
93
100
100
100
100
100
100
84
93
100
100
99

High Clouds (% Sky Obscured)

25
91
89
62
60
25
23
75
75
75
75
100
100
100
100
100
100
100
100
100
96
90
83
89

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
6
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
Very Light Rain
None
None
None
None
None
None
Very Light Rain
None
None
Very Light Rain
Very Light Rain
None
None
None

Precipitation Probability (%)

0
1
2
3
22
37
34
49
50
63
36
21
20
10
27
46
58
35
43
53
62
61
61
57

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0.3
0
0
0
0
0
0
0.3
0
0
0.2
0.3
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

10
12
12
14
14
14
13
13
12
10
8
8
7
7
6
5
5
5
5
4
4
4
3
4

Feels Like (°C)

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

Dew Point (°C)

3
3
5
5
7
7
9
8
8
4
3
3
3
2
1
2
2
1
-1
-1
-1
-1
-1
-1

Relative Humidity (%)

59
56
60
56
60
62
74
74
73
68
70
71
73
72
72
76
83
76
69
69
73
72
73
75

Pressure (mb)

1007
1006
1005
1003
1002
1000
1000
999
1000
1001
1001
1001
1002
1002
1003
1004
1004
1004
1004
1004
1005
1005
1005
1006

Ozone (du)

373
375
378
381
383
385
387
392
400
411
417
413
412
414
415
415
416
420
424
425
423
424
427
431

Thursday 26

Waxing Gibbous 61%

10:16

03:42

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

Sun - Rise: 05:48, Set: 18:24, Transit: 12:07. Moon - Rise: 10:16, Set: 03:42. Civil Dark: 18:57 - 05:15. Nautical Dark: 19:35 - 04:36. Astro Dark: 20:16 - 03:55

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
98
95
92
80
80
69
73
92
100
100
78
100
100
100
100
100

Low Clouds (% Sky Obscured)

72
68
73
78
88
77
61
54
26
49
25
27
17
20
22
26
26
22
20
38
60
67
73
78

Medium Clouds (% Sky Obscured)

94
77
57
57
60
57
91
72
65
82
76
61
55
56
66
87
86
97
78
98
96
100
100
88

High Clouds (% Sky Obscured)

94
100
100
100
100
78
21
22
45
50
53
26
36
9
30
75
100
100
78
100
100
100
100
87

ISS Passover

Visibility (miles)

9
9
8
8
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 (%)

50
39
41
43
31
35
30
25
24
10
2
2
1
0
1
1
0
11
9
5
23
21
13
36

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
14
14
14
14
13
13
13
15
12
11
9
7
7
7
7
8
9
9
9
11
13
13
12

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

68
62
60
61
53
47
48
44
49
54
60
68
69
69
72
72
72
74
74
83
80
70
65
63

Pressure (mb)

1006
1007
1007
1007
1007
1007
1007
1007
1007
1008
1009
1009
1010
1010
1011
1011
1012
1012
1012
1013
1013
1013
1014
1015

Ozone (du)

434
433
434
434
436
433
431
429
429
430
431
432
434
435
435
438
438
440
439
438
436
436
436
437

Friday 27

Waxing Gibbous 72%

11:38

04:10

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

Sun - Rise: 05:45, Set: 18:26, Transit: 12:07. Moon - Rise: 11:38, Set: 04:10. Civil Dark: 18:58 - 05:13. Nautical Dark: 19:37 - 04:34. Astro Dark: 20:18 - 03:53

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
94
97
95
86
98
95
92
89
80
71
65
63
59
48
44
40
38
41

Low Clouds (% Sky Obscured)

85
90
87
88
86
84
77
79
82
75
81
69
65
61
55
49
42
39
36
33
27
23
20
17

Medium Clouds (% Sky Obscured)

97
93
95
99
59
51
50
44
50
51
93
87
84
80
66
59
46
45
45
31
25
21
21
29

High Clouds (% Sky Obscured)

99
100
100
99
85
62
38
14
34
52
52
9
15
20
15
10
3
4
4
4
3
1
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 (%)

43
38
28
33
28
19
17
18
15
16
5
6
8
6
5
4
3
3
1
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
13
13
14
15
15
15
15
13
11
9
8
7
7
7
7
6
6
6
6
6
6
6

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

60
59
57
53
53
52
55
54
55
58
66
77
80
82
85
84
84
84
88
89
91
89
88
84

Pressure (mb)

1015
1016
1016
1016
1016
1016
1016
1016
1016
1017
1017
1018
1021
1021
1022
1022
1022
1022
1022
1022
1022
1022
1022
1022

Ozone (du)

436
432
432
433
435
434
433
433
434
435
436
437
438
439
440
441
442
442
445
447
449
448
448
447

Saturday 28

Waxing Gibbous 81%

13:02

05:31

08 OK
09 OK
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
03 Bad
04 Bad
05 Bad
06 Bad
07 Bad
08 Bad

Sun - Rise: 06:43, Set: 18:27, Transit: 12:06. Moon - Rise: 13:02, Set: 05:31. Civil Dark: 19:00 - 06:11. Nautical Dark: 19:39 - 05:31. Astro Dark: 20:20 - 04:50

Total Clouds (% Sky Obscured)

44
47
45
46
44
43
36
31
30
29
29
31
36
46
53
55
49
65
82
97
95
93
92
83

Low Clouds (% Sky Obscured)

11
4
5
6
8
12
16
20
17
15
13
11
9
6
7
6
5
12
22
37
45
54
60
60

Medium Clouds (% Sky Obscured)

22
22
20
11
10
9
5
4
7
13
26
31
36
46
53
55
49
64
80
95
84
77
59
43

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
32
60
80
50
22
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
1
1
2
1
1
4
4
4
3
3
0
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

0
1
1
2
3
3
9
8
8
8
8
9
4
4
4
4
4
3
2
2
2
2
2
2

Dew Point (°C)

-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-0
-0
0
0
-0
-1
-1
-1
-1
-1
-1
-1
-0
0

Relative Humidity (%)

76
68
60
55
52
47
48
46
46
51
56
63
66
68
70
71
72
72
72
72
73
72
72
71

Pressure (mb)

1022
1022
1022
1021
1020
1019
1019
1018
1017
1017
1017
1018
1018
1018
1018
1018
1018
1018
1018
1018
1019
1019
1020
1020

Ozone (du)

445
443
441
433
426
418
411
404
397
393
390
387
386
384
383
380
377
374
372
371
369
369
370
370

Sunday 29

Waxing Gibbous 89%

15:23

05:46

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 OK
21 OK
22 Good
23 Good
00 Good
01 Good

Sun - Rise: 06:41, Set: 19:29, Transit: 13:06. Moon - Rise: 15:23, Set: 05:46. Civil Dark: 20:02 - 06:08. Nautical Dark: 20:41 - 05:29. Astro Dark: 21:22 - 04:47

Total Clouds (% Sky Obscured)

83
72
59
63
67
71
81
90
99
87
75
63
41
21
2
4
5
5

Low Clouds (% Sky Obscured)

60
57
52
59
65
71
81
90
99
85
70
55
37
19
2
2
1
1

Medium Clouds (% Sky Obscured)

43
35
28
20
11
3
2
1
0
6
12
16
9
4
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

ISS Passover

Visibility (miles)

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

Precipitation Type

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

Precipitation Probability (%)

2
3
1
6
9
10
9
8
2
4
2
1
1
1
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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

5
6
8
9
9
10
11
10
10
10
9
7
6
5
4
3
3
2

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

71
65
58
54
48
43
40
39
39
38
46
56
67
73
79
85
88
89

Pressure (mb)

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

Ozone (du)

370
370
370
370
369
367
366
367
369
370
376
382
387
384
380
377
375
373

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

Generated: 23/03/26 08:31:16. Forecast: 23/03/26 to 29/03/26. Timezone: UTC+1.00