Clear Outside v1.0 - International Weather Forecasts For Astronomers

Tuesday 28

Waxing Gibbous 92%

16:53

04:26

15 Bad
16 Bad
17 OK
18 Good
19 Good
20 Good
21 OK
22 Good
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

Sun - Rise: 05:33, Set: 20:11, Transit: 12:53. Moon - Rise: 16:53, Set: 04:26. Civil Dark: 20:48 - 04:56. Nautical Dark: 21:34 - 04:09. Astro Dark: 22:30 - 03:13

Total Clouds (% Sky Obscured)

74
56
39
5
0
0
41
1
1
0
0
0
0
2
1
0
2
2
0
0
0
0
0
1

Low Clouds (% Sky Obscured)

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

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
41
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

31
26
9
3
0
0
3
0
1
0
0
0
0
2
1
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

47
47
48
49
52
53
56
57
59
63
64
63
64
66
69
73
66
55
47
41
38
35
34
33

Pressure (mb)

1022
1022
1022
1022
1022
1023
1024
1025
1025
1026
1026
1026
1026
1026
1027
1027
1027
1028
1028
1028
1028
1028
1028
1028

Ozone (du)

406
408
406
408
414
415
410
406
407
409
410
413
414
414
414
413
412
411
412
411
410
411
413
418

Wednesday 29

Waxing Gibbous 97%

18:06

04:39

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

Sun - Rise: 05:31, Set: 20:13, Transit: 12:53. Moon - Rise: 18:06, Set: 04:39. Civil Dark: 20:50 - 04:54. Nautical Dark: 21:37 - 04:07. Astro Dark: 22:33 - 03:10

Total Clouds (% Sky Obscured)

5
27
23
6
2
2
1
0
2
2
0
3
4
4
6
5
5
7
16
46
54
87
82
57

Low Clouds (% Sky Obscured)

5
27
10
3
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
26
48
65
67
48

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
20
33
57
57
36

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
2
2
0
3
4
4
6
5
5
6
15
23
4
2
1
3

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)

14
14
13
12
10
7
5
4
4
4
4
4
4
4
4
4
3
3
4
6
7
8
9
9

Chance of Frost

Temperature (°C)

9
9
8
8
7
4
3
2
1
0
-1
-1
-1
-2
-2
-2
1
4
7
9
10
11
12
12

Feels Like (°C)

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

Dew Point (°C)

-6
-6
-6
-6
-5
-4
-5
-5
-5
-6
-6
-7
-8
-8
-9
-9
-8
-7
-7
-6
-4
-2
-1
-1

Relative Humidity (%)

35
35
36
39
44
53
58
62
65
65
66
63
62
61
59
58
51
42
38
35
36
39
41
42

Pressure (mb)

1028
1028
1028
1028
1029
1030
1031
1031
1032
1032
1033
1033
1033
1033
1033
1033
1033
1033
1033
1032
1032
1031
1031
1030

Ozone (du)

420
423
430
426
424
424
424
425
424
423
422
420
417
415
413
412
411
410
410
409
409
408
407
408

Thursday 30

Waxing Gibbous 99%

19:19

04:54

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

Sun - Rise: 05:29, Set: 20:14, Transit: 12:53. Moon - Rise: 19:19, Set: 04:54. Civil Dark: 20:51 - 04:52. Nautical Dark: 21:39 - 04:04. Astro Dark: 22:36 - 03:06

Total Clouds (% Sky Obscured)

77
78
80
38
39
47
58
67
72
34
21
6
21
28
12
4
3
6
12
18
17
15
14
15

Low Clouds (% Sky Obscured)

53
45
30
33
29
44
45
48
57
30
16
1
1
4
11
0
0
6
12
18
17
15
14
15

Medium Clouds (% Sky Obscured)

31
4
37
26
33
34
37
16
39
30
14
0
0
3
0
0
0
0
0
0
0
0
0
1

High Clouds (% Sky Obscured)

42
46
44
6
4
5
4
6
6
4
4
5
21
28
4
4
3
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)

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

Chance of Frost

Temperature (°C)

13
13
13
12
11
9
7
7
7
6
5
4
4
3
3
3
5
9
11
13
15
16
17
18

Feels Like (°C)

9
9
10
10
10
8
6
5
4
3
4
3
3
2
1
2
5
9
11
12
14
15
16
16

Dew Point (°C)

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

Relative Humidity (%)

43
43
46
49
58
68
74
70
64
66
78
85
86
89
88
88
80
68
60
55
51
47
44
44

Pressure (mb)

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

Ozone (du)

407
406
404
402
401
400
398
397
396
395
394
393
393
393
393
394
394
393
393
392
392
392
392
393

Friday 1

Full Moon 100%

20:33

05:12

15 OK
16 OK
17 OK
18 Good
19 Good
20 Good
21 Good
22 Good
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

Sun - Rise: 05:28, Set: 20:16, Transit: 12:53. Moon - Rise: 20:33, Set: 05:12. Civil Dark: 20:53 - 04:50. Nautical Dark: 21:41 - 04:02. Astro Dark: 22:39 - 03:03

Total Clouds (% Sky Obscured)

19
26
19
9
0
2
3
4
3
2
0
2
3
3
4
2
3
2
0
0
5
8
10
12

Low Clouds (% Sky Obscured)

18
20
15
7
0
2
3
4
3
2
0
0
0
0
0
0
0
0
0
0
5
8
10
12

Medium Clouds (% Sky Obscured)

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

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

Chance of Frost

Temperature (°C)

18
18
18
17
15
13
11
10
8
8
7
7
6
6
6
7
9
11
13
15
17
18
19
20

Feels Like (°C)

16
16
16
15
15
13
11
10
8
9
8
8
7
7
7
8
10
12
14
15
16
17
18
19

Dew Point (°C)

5
6
7
8
9
9
9
7
6
5
5
4
4
4
4
5
6
6
6
7
7
7
7
7

Relative Humidity (%)

44
46
48
55
65
77
84
85
87
85
85
85
85
86
86
87
80
68
61
55
51
47
44
43

Pressure (mb)

1027
1027
1026
1026
1026
1026
1027
1027
1027
1027
1027
1027
1027
1027
1026
1026
1025
1025
1024
1024
1023
1023
1022
1021

Ozone (du)

391
389
387
385
383
383
384
384
383
383
383
383
383
383
382
382
382
381
381
380
380
379
379
380

Saturday 2

Waning Gibbous 98%

21:46

05:35

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 Good
06 Good
07 Good
08 Good
09 OK
10 OK
11 OK
12 Bad
13 Bad
14 Bad

Sun - Rise: 05:26, Set: 20:17, Transit: 12:52. Moon - Rise: 21:46, Set: 05:35. Civil Dark: 20:55 - 04:48. Nautical Dark: 21:43 - 04:00. Astro Dark: 22:42 - 03:00

Total Clouds (% Sky Obscured)

13
14
9
4
0
0
0
0
0
0
0
1
1
2
2
3
3
11
19
25
40
55
67
62

Low Clouds (% Sky Obscured)

13
14
9
4
0
0
0
0
0
0
0
1
1
2
2
3
3
2
1
0
5
11
16
19

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
23
45
63
54

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
0
0
0
0
16

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
6
5

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
1
7
12
41

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

Chance of Frost

Temperature (°C)

20
20
20
19
18
15
13
11
10
9
9
9
8
8
8
10
11
13
14
16
18
18
19
19

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

42
40
42
50
62
74
81
84
84
85
84
84
85
85
87
80
75
70
66
64
61
60
60
59

Pressure (mb)

1020
1019
1019
1018
1018
1018
1018
1018
1018
1018
1018
1017
1017
1017
1017
1016
1016
1016
1016
1015
1015
1014
1014
1013

Ozone (du)

380
381
382
384
385
386
387
388
388
388
387
388
388
388
388
388
387
387
385
383
381
380
379
378

Sunday 3

Waning Gibbous 95%

22:55

06:07

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
14 Bad

Sun - Rise: 05:24, Set: 20:19, Transit: 12:52. Moon - Rise: 22:55, Set: 06:07. Civil Dark: 20:57 - 04:46. Nautical Dark: 21:45 - 03:57. Astro Dark: 22:45 - 02:56

Total Clouds (% Sky Obscured)

61
59
53
51
49
53
57
61
77
88
100
90
84
76
75
70
60
66
68
71
64
55
46
46

Low Clouds (% Sky Obscured)

20
19
14
9
5
4
3
2
2
2
2
4
5
8
14
21
28
40
55
67
57
51
40
39

Medium Clouds (% Sky Obscured)

49
48
47
30
29
40
18
12
19
22
32
41
42
49
40
32
25
21
28
34
41
38
37
33

High Clouds (% Sky Obscured)

26
27
27
23
23
21
29
33
55
78
100
72
41
12
8
5
1
7
22
33
40
55
46
46

ISS Passover

Visibility (miles)

6
8
9
8
7
7
7
8
9
9
9
9
9
9
9
7
5
3
5
7
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

Very Light Rain
Light Rain
Light Rain
Very Light Rain
None
None
None
None
None
None
None
None
None
None
None
None
Very Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Very Light Rain
None
None

Precipitation Probability (%)

71
88
74
58
25
27
28
26
33
36
33
28
23
19
36
50
62
79
89
95
79
65
50
55

Precipitation Amount (mm)

0.3
0.4
0.4
0.2
0
0
0
0
0
0
0
0
0
0
0
0
0.3
0.5
0.7
0.7
0.5
0.3
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

18
16
14
14
14
14
13
12
11
11
11
10
10
10
10
11
11
12
12
13
13
15
16
17

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

67
75
86
86
87
89
90
92
93
91
93
93
93
93
95
95
96
96
96
98
98
90
86
79

Pressure (mb)

1013
1013
1012
1012
1012
1012
1012
1012
1013
1013
1013
1013
1013
1013
1013
1013
1013
1013
1013
1013
1013
1013
1013
1012

Ozone (du)

377
377
376
376
376
375
375
375
375
375
376
376
376
375
375
375
374
374
374
374
374
374
374
374

Monday 4

Waning Gibbous 90%

23:58

06:50

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: 05:22, Set: 20:21, Transit: 12:52. Moon - Rise: 23:58, Set: 06:50. Civil Dark: 20:58 - 04:44. Nautical Dark: 21:47 - 03:55. Astro Dark: 22:48 - 02:53

Total Clouds (% Sky Obscured)

43
40
41
47
55
65
75
79
60
45
36
57
79
99
99
100
100

Low Clouds (% Sky Obscured)

34
27
21
23
28
27
27
27
27
27
27
23
19
15
10
15
20

Medium Clouds (% Sky Obscured)

20
7
5
4
2
1
0
0
0
0
0
9
18
25
44
59
77

High Clouds (% Sky Obscured)

35
22
15
20
32
48
62
76
51
25
0
33
63
95
95
95
95

ISS Passover

Visibility (miles)

8
7
5
7
8
9
9
9
9
9
9
9
8
6
4
6
8

Fog (%)

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

Precipitation Type

Very Light Rain
Light Rain
Very Light Rain
Very Light Rain
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

61
68
65
61
53
46
38
22
22
22
21
24
23
13
23
25
23

Precipitation Amount (mm)

0.2
0.4
0.3
0.3
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

18
18
18
17
16
15
13
12
11
11
10
10
10
10
10
10
10

Feels Like (°C)

18
18
17
17
18
17
13
12
12
11
10
10
9
9
9
9
10

Dew Point (°C)

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

Relative Humidity (%)

78
74
73
78
83
89
92
95
96
96
96
95
96
96
96
96
95

Pressure (mb)

1012
1011
1011
1011
1011
1011
1012
1012
1012
1012
1012
1012
1012
1012
1012
1012
1012

Ozone (du)

374
374
374
375
376
377
377
377
377
377
377
376
377
378
379
379
380

Forecast for Maršov u Úpice, Trutnov District, Czech Republic (50.48,15.98)

Generated: 28/04/26 14:31:01. Forecast: 28/04/26 to 04/05/26. Timezone: UTC+2.00