Clear Outside v1.0 - International Weather Forecasts For Astronomers

Monday 27

Waxing Gibbous 86%

15:40

04:14

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

Sun - Rise: 05:35, Set: 20:10, Transit: 12:53. Moon - Rise: 15:40, Set: 04:14. Civil Dark: 20:46 - 04:58. Nautical Dark: 21:32 - 04:12. Astro Dark: 22:27 - 03:16

Total Clouds (% Sky Obscured)

23
35
27
83
100
100
100
100
100
100
88
83
89
100
94
60
48
47
68
80
95
86
82
99

Low Clouds (% Sky Obscured)

23
1
27
44
47
56
45
25
19
11
3
0
5
24
10
0
0
0
0
1
1
1
25
36

Medium Clouds (% Sky Obscured)

0
0
0
0
91
99
100
100
100
100
81
70
32
50
71
29
37
28
5
11
32
37
39
72

High Clouds (% Sky Obscured)

23
35
27
71
100
100
100
100
100
98
83
77
88
100
87
60
19
47
68
80
87
76
81
99

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

Chance of Frost

Temperature (°C)

13
14
14
15
14
13
12
10
9
8
8
7
6
5
5
5
4
4
5
7
9
10
11
12

Feels Like (°C)

10
11
12
12
13
11
8
7
6
6
5
4
4
3
2
2
1
0
2
4
4
6
7
7

Dew Point (°C)

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

Relative Humidity (%)

35
35
36
37
39
45
55
62
62
62
62
62
63
64
65
66
69
73
73
68
61
57
55
53

Pressure (mb)

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

Ozone (du)

395
394
392
390
389
390
392
393
394
395
396
396
395
395
397
403
408
409
408
408
407
407
407
407

Tuesday 28

Waxing Gibbous 92%

16:53

04:26

13 Bad
14 Bad
15 Bad
16 Bad
17 Bad
18 OK
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

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)

97
96
100
100
60
19
1
1
2
0
0
0
0
0
1
2
0
1
2
0
0
0
0
0

Low Clouds (% Sky Obscured)

26
25
28
24
12
0
0
0
0
0
0
0
0
0
0
0
0
1
1
0
0
0
0
0

Medium Clouds (% Sky Obscured)

89
87
99
95
0
0
0
1
2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

91
93
100
100
30
10
1
1
0
0
0
0
0
0
1
2
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

50
49
50
47
44
44
49
53
57
58
59
60
60
61
62
64
67
73
67
57
42
37
34
34

Pressure (mb)

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

Ozone (du)

407
406
407
409
408
408
410
409
409
412
417
417
416
415
412
411
409
406
403
404
408
412
417
417

Wednesday 29

Waxing Gibbous 97%

18:06

04:39

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

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)

0
8
26
31
29
15
2
2
4
2
24
17
6
5
6
9
13
7
4
8
11
9
21
23

Low Clouds (% Sky Obscured)

0
8
26
31
29
6
0
0
0
0
0
0
0
0
0
0
0
0
0
2
2
2
14
14

Medium Clouds (% Sky Obscured)

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

High Clouds (% Sky Obscured)

0
0
0
0
0
2
0
2
4
2
24
17
6
5
6
9
13
7
4
3
3
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
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)

13
13
13
13
13
12
10
7
5
4
3
3
4
3
3
4
3
3
3
2
3
5
7
7

Chance of Frost

Temperature (°C)

9
9
9
9
9
8
7
5
3
2
2
1
0
-0
-1
-1
-1
-1
1
5
7
9
10
11

Feels Like (°C)

5
5
5
4
4
3
3
3
2
1
0
-2
-2
-2
-2
-3
-3
-3
1
4
6
7
8
9

Dew Point (°C)

-6
-6
-5
-5
-5
-5
-4
-3
-4
-4
-5
-5
-6
-6
-7
-7
-7
-7
-7
-6
-5
-5
-3
-1

Relative Humidity (%)

34
34
35
36
38
40
47
57
61
63
64
64
64
63
63
62
63
62
56
48
42
38
39
41

Pressure (mb)

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

Ozone (du)

418
421
422
423
423
423
422
423
421
419
415
413
411
408
407
407
407
406
404
403
403
403
402
402

Thursday 30

Waxing Gibbous 99%

19:19

04:54

13 OK
14 Bad
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 Good
10 Good
11 OK
12 OK

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)

28
51
16
11
8
7
12
11
13
15
9
12
5
3
4
3
3
3
3
7
11
15
28
40

Low Clouds (% Sky Obscured)

17
17
4
4
3
3
3
3
2
2
0
0
1
0
0
0
0
0
0
7
11
15
28
40

Medium Clouds (% Sky Obscured)

0
1
4
4
4
4
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
11
23

High Clouds (% Sky Obscured)

5
20
1
1
1
1
3
6
8
10
8
8
2
2
2
2
1
1
1
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
9
9
9
9
8
6
4
5
5
5
5
5
5
5
5
5
4
3
4
6
6
7
8

Chance of Frost

Temperature (°C)

12
13
13
13
13
12
11
9
7
6
6
5
4
4
3
2
2
3
5
8
10
12
14
15

Feels Like (°C)

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

Dew Point (°C)

0
1
1
2
2
2
3
3
3
3
2
2
2
2
1
1
1
2
3
3
3
5
5
6

Relative Humidity (%)

42
43
44
44
46
49
58
67
74
76
78
80
85
88
89
89
93
93
83
71
63
61
56
53

Pressure (mb)

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

Ozone (du)

403
403
402
401
400
398
397
396
396
397
396
396
395
394
393
393
393
392
391
390
390
390
390
390

Friday 1

Full Moon 100%

20:33

05:12

13 Bad
14 OK
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

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)

51
43
35
25
20
14
10
7
3
0
0
0
0
6
12
16
10
5
1
3
5
8
8
9

Low Clouds (% Sky Obscured)

51
43
35
25
20
14
10
7
3
0
0
0
0
6
12
16
10
5
0
3
5
8
8
9

Medium Clouds (% Sky Obscured)

34
23
11
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
0
0
0
0
0
0
0
0
0
1
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)

9
10
10
9
9
8
7
5
5
5
4
4
4
4
4
3
3
2
2
1
2
3
4
4

Chance of Frost

Temperature (°C)

16
17
17
17
17
16
14
12
10
9
8
7
7
6
6
6
5
7
9
11
12
14
16
17

Feels Like (°C)

13
15
14
15
15
14
13
12
10
9
7
7
6
6
6
6
6
6
6
6
12
13
14
14

Dew Point (°C)

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

Relative Humidity (%)

52
50
49
49
51
56
63
75
81
84
85
87
85
85
85
85
86
79
72
66
61
55
50
48

Pressure (mb)

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

Ozone (du)

389
389
389
388
388
388
388
387
388
387
388
388
388
387
387
387
386
386
385
384
383
383
382
382

Saturday 2

Waning Gibbous 98%

21:46

05:35

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

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)

11
8
4
0
0
0
0
0
0
0
3
7
9
7
3
0
14
29
40
46
48
49
48
47

Low Clouds (% Sky Obscured)

9
7
4
0
0
0
0
0
0
0
3
7
9
7
3
0
0
0
0
0
0
0
3
7

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
9
19

High Clouds (% Sky Obscured)

0
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
4
17
29
34
47

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)

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

Chance of Frost

Temperature (°C)

17
18
18
18
18
16
14
13
11
10
8
7
7
6
5
6
5
7
9
10
12
13
15
16

Feels Like (°C)

15
16
19
18
18
18
18
18
11
11
11
10
9
8
6
6
7
7
7
7
10
10
10
10

Dew Point (°C)

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

Relative Humidity (%)

46
44
46
47
50
54
60
65
66
68
69
73
76
82
83
83
85
79
73
68
64
62
59
57

Pressure (mb)

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

Ozone (du)

381
381
381
380
380
380
381
381
381
382
382
383
383
384
384
384
385
384
384
383
382
382
381
381

Sunday 3

Waning Gibbous 95%

22:55

06:07

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

Sun - Rise: 05:24, 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)

47
48
45
42
33
24
22
44
65
88
92
96
100
100
99
99
99
99
100

Low Clouds (% Sky Obscured)

11
12
14
18
15
8
1
1
1
3
4
4
3
2
1
0
18
35
49

Medium Clouds (% Sky Obscured)

34
48
45
42
33
24
22
44
48
55
63
80
99
98
97
94
96
97
100

High Clouds (% Sky Obscured)

47
48
45
42
30
24
22
36
54
72
81
91
100
100
99
99
68
36
5

ISS Passover

Visibility (miles)

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

Precipitation Type

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
2
2
3
3
1
11
13
8
14
12
3
20
31
41

Precipitation Amount (mm)

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

Chance of Frost

Temperature (°C)

17
18
18
18
18
17
15
14
13
12
11
10
10
10
10
9
9
10
11

Feels Like (°C)

11
11
16
16
15
16
15
15
11
12
11
12
11
11
8
9
9
9
8

Dew Point (°C)

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

Relative Humidity (%)

54
50
52
55
56
63
69
76
79
81
84
84
85
85
85
84
82
77
72

Pressure (mb)

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

Ozone (du)

381
381
381
381
381
380
379
379
377
376
375
375
375
375
375
375
375
373
371

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

Generated: 27/04/26 13:12:18. Forecast: 27/04/26 to 03/05/26. Timezone: UTC+2.00