Clear Outside v1.0 - International Weather Forecasts For Astronomers

Friday 1

Full Moon 100%

20:33

05:12

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 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)

6
5
4
2
0
0
0
0
0
0
0
0
2
2
2
2
12
8
2
3
2
2
2
2

Low Clouds (% Sky Obscured)

6
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

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)

0
0
1
2
0
0
0
0
0
0
0
0
2
2
2
2
11
5
1
2
2
2
2
2

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

Chance of Frost

Temperature (°C)

18
18
18
17
16
13
11
9
8
8
7
7
6
6
6
6
8
11
14
16
18
19
20
20

Feels Like (°C)

15
16
16
16
15
12
11
9
9
8
7
7
7
6
6
6
9
12
15
16
17
18
19
19

Dew Point (°C)

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

Relative Humidity (%)

42
42
44
50
60
71
78
82
85
85
85
82
85
83
85
83
75
66
59
53
47
44
42
41

Pressure (mb)

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

Ozone (du)

387
387
386
384
383
383
384
385
385
384
383
383
383
383
383
382
381
382
382
382
382
381
381
381

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 OK
05 OK
06 OK
07 OK
08 OK
09 OK
10 OK
11 OK
12 OK
13 OK
14 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)

0
0
0
0
0
0
2
0
0
0
0
0
3
31
33
35
35
32
30
40
37
26
38
35

Low 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

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)

0
0
0
0
0
0
2
0
0
0
0
0
3
31
33
35
35
32
22
30
28
20
34
35

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
4
4
4
3
3
3
3
2
1
1
1
1
2
2
2
1
2
6
10
11
11
12
12

Chance of Frost

Temperature (°C)

21
21
21
20
19
16
13
11
10
10
10
10
10
9
9
9
11
13
15
17
18
19
21
21

Feels Like (°C)

20
21
20
20
20
17
14
12
12
12
11
11
11
10
8
8
10
12
13
14
15
16
18
18

Dew Point (°C)

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

Relative Humidity (%)

40
42
43
49
61
68
71
71
74
76
77
77
76
78
78
78
73
63
58
56
55
48
43
41

Pressure (mb)

1022
1021
1021
1020
1020
1020
1020
1020
1020
1020
1020
1020
1019
1019
1019
1019
1019
1019
1018
1018
1018
1017
1017
1016

Ozone (du)

380
380
380
379
379
378
379
380
380
380
380
381
382
382
380
379
378
379
380
381
381
381
380
379

Sunday 3

Waning Gibbous 95%

22:55

06:07

15 OK
16 OK
17 OK
18 OK
19 Bad
20 OK
21 OK
22 OK
23 OK
00 OK
01 OK
02 OK
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)

33
25
21
26
63
32
35
30
33
39
47
44
100
100
100
100
100
100
100
100
99
85
85
83

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
2
21
27

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
80
97
100
100
100
100
99
22
17
16

High Clouds (% Sky Obscured)

33
25
21
26
63
32
35
30
33
39
47
44
100
100
100
100
100
93
82
61
51
51
46
39

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
1
2
2
9
7
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)

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

Chance of Frost

Temperature (°C)

22
22
21
20
19
16
14
13
12
12
11
11
10
10
10
10
11
13
14
15
16
18
19
20

Feels Like (°C)

18
18
18
18
17
15
13
12
12
11
11
10
9
9
9
8
9
10
10
11
13
15
17
18

Dew Point (°C)

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

Relative Humidity (%)

41
42
47
54
63
73
78
80
81
83
83
83
83
81
80
78
72
64
63
62
60
56
56
56

Pressure (mb)

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

Ozone (du)

379
379
379
379
378
378
378
379
381
380
381
379
378
376
374
371
371
371
373
374
373
372
371
371

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
08 Bad
09 Bad
10 Bad
11 Bad
12 Bad
13 Bad
14 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)

79
64
64
69
74
82
92
100
100
98
90
100
100
90
76
97
100
99
99
98
99
99
99
95

Low Clouds (% Sky Obscured)

34
45
40
31
27
30
45
53
29
16
1
0
0
0
1
0
0
16
30
44
46
42
41
53

Medium Clouds (% Sky Obscured)

18
13
11
7
44
82
74
22
30
37
39
51
65
72
74
82
91
73
55
37
45
52
61
60

High Clouds (% Sky Obscured)

26
15
17
28
45
66
85
100
100
98
90
100
100
90
76
97
100
96
92
88
90
93
95
68

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
24
30
13
3
2
2
2
2
1
3
5
6
6
6
2
4
5
1
2
2
2
15

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

Chance of Frost

Temperature (°C)

20
21
20
20
18
17
16
15
14
13
13
12
12
12
12
12
13
14
14
15
16
17
18
19

Feels Like (°C)

19
19
19
19
17
16
16
14
13
12
12
12
11
11
11
12
12
11
11
12
13
14
15
16

Dew Point (°C)

11
11
13
14
15
14
13
11
10
9
10
9
9
8
8
8
8
8
8
8
9
9
10
10

Relative Humidity (%)

55
55
62
70
80
83
82
76
75
77
80
81
79
76
76
76
72
67
63
62
61
59
57
56

Pressure (mb)

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

Ozone (du)

370
369
369
367
366
365
367
368
370
371
372
373
374
374
374
373
372
372
372
372
371
371
371
371

Tuesday 5

Waning Gibbous 84%

00:50

07:44

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: 05:21, Set: 20:22, Transit: 12:52. Moon - Rise: 00:50, Set: 07:44. Civil Dark: 21:00 - 04:43. Nautical Dark: 21:49 - 03:53. Astro Dark: 22:51 - 02:50

Total Clouds (% Sky Obscured)

90
87
91
96
100
74
81
92
100
100
100
99
98
97
97
96
95
97
98
100
100
100
100
100

Low Clouds (% Sky Obscured)

58
48
55
60
56
51
58
60
70
74
77
75
73
69
69
67
79
88
94
100
100
100
100
98

Medium Clouds (% Sky Obscured)

61
58
61
82
72
45
45
54
100
84
50
49
47
46
48
62
76
65
51
38
32
26
21
37

High Clouds (% Sky Obscured)

47
23
45
71
100
74
78
88
75
34
2
12
21
26
16
7
2
2
2
0
0
0
0
15

ISS Passover

Visibility (miles)

9
9
9
9
9
9
7
4
7
8
9
9
8
6
4
4
4
4
6
8
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
Very Light Rain
Very Light Rain
Very Light Rain
Light Rain
Light Rain
Very Light Rain
None
None
Light Rain
Very Light Rain
None
None
None
None
None
None
None
None

Precipitation Probability (%)

26
21
35
45
43
39
49
52
55
68
81
94
78
61
80
74
51
59
57
43
47
46
44
48

Precipitation Amount (mm)

0
0
0
0
0
0
0.2
0.2
0.2
0.4
0.6
0.3
0
0
0.4
0.3
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

19
18
18
18
16
15
14
13
12
12
12
12
12
12
11
11
11
11
11
11
11
11
11
11

Feels Like (°C)

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

Dew Point (°C)

11
12
11
12
12
12
11
11
12
12
11
12
11
11
11
11
11
10
10
10
10
10
10
10

Relative Humidity (%)

60
64
63
68
77
84
84
92
95
96
95
96
96
96
96
96
96
95
95
95
93
91
90
90

Pressure (mb)

1006
1006
1006
1005
1006
1006
1006
1006
1006
1006
1006
1005
1005
1005
1005
1005
1005
1005
1005
1006
1006
1007
1007
1008

Ozone (du)

372
373
374
374
375
376
376
375
376
376
375
372
371
370
370
370
371
372
372
372
372
373
373
374

Wednesday 6

Waning Gibbous 76%

01:30

08:48

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: 05:19, Set: 20:24, Transit: 12:52. Moon - Rise: 01:30, Set: 08:48. Civil Dark: 21:02 - 04:41. Nautical Dark: 21:52 - 03:50. Astro Dark: 22:55 - 02:46

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
99
98
98
98
98
96

Low Clouds (% Sky Obscured)

98
97
98
99
97
97
97
99
95
92
88
92
96
100
92
83
75
73
73
72
65
60
52
50

Medium Clouds (% Sky Obscured)

53
68
72
69
71
85
83
89
89
89
90
94
96
100
100
100
100
98
96
94
81
65
41
28

High Clouds (% Sky Obscured)

25
25
50
73
100
100
100
100
99
99
99
99
100
100
100
100
100
83
72
63
65
69
64
43

ISS Passover

Visibility (miles)

9
9
9
7
4
2
4
6
8
7
6
5
5
5
4
6
8
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
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Very Light Rain
Very Light Rain
Light Rain
Very Light Rain
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

49
45
76
93
95
95
95
86
75
65
56
68
66
52
52
49
38
36
32
22
25
23
16
18

Precipitation Amount (mm)

0
0
0.4
0.6
0.6
0.7
0.7
0.5
0.4
0.3
0.3
0.4
0.3
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

10
10
10
10
9
9
9
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8

Relative Humidity (%)

87
86
84
89
91
96
96
96
96
96
98
96
96
96
96
95
93
93
91
90
88
87
87
85

Pressure (mb)

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

Ozone (du)

375
376
377
377
376
376
376
376
377
378
379
380
380
381
381
382
382
382
384
386
388
389
390
391

Thursday 7

Waning Gibbous 67%

02:00

09:59

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

Sun - Rise: 05:17, Set: 20:25, Transit: 12:52. Moon - Rise: 02:00, Set: 09:59. Civil Dark: 21:04 - 04:39. Nautical Dark: 21:54 - 03:48. Astro Dark: 22:58 - 02:43

Total Clouds (% Sky Obscured)

94
93
86
79
70
62
55
53
44
32
30
38
49
59
63
62
61

Low Clouds (% Sky Obscured)

45
39
26
19
15
21
27
36
32
23
15
23
32
40
38
37
35

Medium Clouds (% Sky Obscured)

26
19
17
18
15
30
26
18
15
8
0
2
3
8
7
9
9

High Clouds (% Sky Obscured)

21
0
0
0
0
0
0
0
0
0
0
0
3
4
4
3
3

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
None
None
None
None
None

Precipitation Probability (%)

17
14
19
21
23
20
14
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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

8
8
8
8
8
8
7
7
6
6
6
5
5
5
5
5
6

Relative Humidity (%)

81
77
73
77
81
84
84
85
87
85
85
85
87
88
90
85
80

Pressure (mb)

1015
1015
1015
1015
1015
1015
1016
1016
1017
1017
1017
1017
1017
1017
1018
1017
1017

Ozone (du)

391
392
392
392
392
391
389
387
384
385
385
386
387
387
387
388
389

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

Generated: 01/05/26 15:16:49. Forecast: 01/05/26 to 07/05/26. Timezone: UTC+2.00