Clear Outside v1.0 - International Weather Forecasts For Astronomers

Sunday 31

Full Moon 100%

21:50

04:47

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
15 Bad
16 Bad
17 Bad
18 OK
19 OK

Sun - Rise: 04:49, Set: 20:57, Transit: 12:54. Moon - Rise: 21:50, Set: 04:47. Civil Dark: 21:41 - 04:05. Nautical Dark: 22:43 - 03:02. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

95
96
97
98
100
100
100
100
100
100
100
100
100
100
97
99
96
100
98
69
48
71
27
20

Low Clouds (% Sky Obscured)

53
60
62
78
82
80
79
86
80
87
56
73
62
60
54
44
41
12
61
41
24
40
2
0

Medium Clouds (% Sky Obscured)

95
96
97
98
100
98
100
100
100
100
100
100
100
100
91
98
82
100
86
36
0
30
24
20

High Clouds (% Sky Obscured)

95
60
97
98
100
86
100
100
100
100
100
100
97
95
81
94
85
100
86
19
48
67
7
3

ISS Passover

Visibility (miles)

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

Fog (%)

0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Type

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

Precipitation Probability (%)

95
95
90
95
95
95
95
95
95
95
95
95
95
95
95
95
47
41
64
64
51
27
19
8

Precipitation Amount (mm)

0.7
0.5
0.5
0.7
0.9
1.2
1.5
0.9
0.9
1.3
1.7
1
1.7
2.6
2.5
0.7
0
0
0.4
0.4
0.2
0
0
0

Wind Speed/Direction (mph)

8
5
3
3
1
2
3
2
3
2
3
5
5
6
7
9
8
6
6
7
7
8
8
8

Chance of Frost

Temperature (°C)

16
15
15
14
14
14
14
14
14
14
14
14
14
14
14
14
15
16
18
19
20
20
19
18

Feels Like (°C)

17
15
14
14
15
15
15
14
14
14
15
14
14
15
14
13
14
15
18
18
19
18
18
18

Dew Point (°C)

13
12
13
13
14
14
14
14
14
14
14
13
14
14
14
14
14
14
13
12
12
12
12
12

Relative Humidity (%)

78
82
89
92
95
96
98
98
98
98
98
96
96
95
96
96
95
90
73
65
62
60
62
68

Pressure (mb)

1010
1011
1011
1011
1011
1010
1010
1010
1010
1010
1010
1011
1011
1012
1012
1013
1014
1014
1014
1014
1014
1014
1014
1014

Ozone (du)

346
345
344
344
344
345
347
350
353
356
357
361
364
362
362
360
361
362
363
363
362
363
367
370

Monday 1

Waning Gibbous 97%

22:45

05:38

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

Sun - Rise: 04:48, Set: 20:58, Transit: 12:54. Moon - Rise: 22:45, Set: 05:38. Civil Dark: 21:42 - 04:04. Nautical Dark: 22:45 - 03:01. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

8
6
0
0
0
14
17
32
29
24
22
23
21
37
29
25
68
93
87
98
91
88
74
63

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
2
8
0
0
0
0
2
0

Medium Clouds (% Sky Obscured)

8
6
0
0
0
14
16
24
20
18
17
17
15
22
18
8
25
35
31
25
23
52
25
36

High Clouds (% Sky Obscured)

2
1
0
0
0
0
0
6
7
4
6
6
5
26
9
14
63
76
82
98
91
81
51
32

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 (%)

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

Chance of Frost

Temperature (°C)

17
15
13
12
11
10
10
10
10
9
10
13
15
17
18
19
20
21
22
22
22
22
22
21

Feels Like (°C)

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

Dew Point (°C)

13
12
11
10
9
8
8
8
8
8
8
10
11
11
11
11
11
11
11
11
10
11
12
14

Relative Humidity (%)

77
84
87
88
87
87
87
88
88
88
87
80
74
67
63
58
56
53
50
49
47
49
53
66

Pressure (mb)

1015
1015
1016
1016
1016
1016
1016
1016
1016
1016
1015
1015
1015
1014
1014
1014
1013
1013
1012
1011
1010
1010
1009
1009

Ozone (du)

371
371
372
367
367
365
364
362
361
361
359
357
355
353
351
349
349
348
347
346
346
345
344
344

Tuesday 2

Waning Gibbous 94%

23:29

06:40

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
15 Bad
16 Bad
17 Bad
18 Bad
19 Bad

Sun - Rise: 04:47, Set: 20:59, Transit: 12:54. Moon - Rise: 23:29, Set: 06:40. Civil Dark: 21:43 - 04:03. Nautical Dark: 22:46 - 03:00. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

55
57
91
100
84
53
82
65
98
96
99
98
98
99
100
100
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

0
0
0
0
1
0
0
0
37
78
87
82
89
96
100
96
94
92
88
83
79
73
65
57

Medium Clouds (% Sky Obscured)

36
36
36
32
22
53
75
29
67
85
89
83
81
90
90
81
68
67
88
100
100
92
87
89

High Clouds (% Sky Obscured)

29
35
87
100
46
16
59
65
25
28
87
53
47
74
100
100
100
90
85
80
64
69
71
100

ISS Passover

Visibility (miles)

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

Precipitation Probability (%)

0
0
0
0
0
0
0
0
1
7
33
23
11
12
51
95
95
95
79
87
62
37
17
2

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.7
0.9
0.3
0.4
0.8
0.3
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

18
16
15
13
13
14
13
12
12
12
14
13
14
15
15
14
14
12
12
13
13
13
14
14

Dew Point (°C)

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

Relative Humidity (%)

70
78
82
83
87
86
83
81
83
75
80
80
83
87
90
90
92
96
98
96
98
98
98
96

Pressure (mb)

1008
1009
1009
1009
1008
1008
1007
1007
1007
1007
1007
1007
1007
1007
1007
1007
1008
1009
1009
1009
1010
1010
1010
1010

Ozone (du)

344
345
349
353
355
355
356
356
356
356
356
356
356
355
356
357
357
357
358
357
356
355
354
355

Wednesday 3

Waning Gibbous 88%

00:02

07:49

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
15 Bad
16 Bad
17 Bad
18 OK
19 OK

Sun - Rise: 04:47, Set: 21:00, Transit: 12:54. Moon - Rise: 00:02, Set: 07:49. Civil Dark: 21:44 - 04:03. Nautical Dark: 22:48 - 02:59. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

99
98
96
97
98
100
100
100
100
99
98
97
89
88
83
80
79
67
63
56
56
53
31
32

Low Clouds (% Sky Obscured)

62
64
66
63
63
60
64
72
80
82
84
84
77
73
65
62
57
44
42
33
25
1
1
0

Medium Clouds (% Sky Obscured)

91
93
95
96
97
99
99
100
100
83
63
36
23
11
0
6
13
20
24
27
30
21
12
2

High Clouds (% Sky Obscured)

73
77
56
68
88
97
86
65
76
64
50
45
35
40
35
25
20
6
0
0
0
23
31
32

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 (%)

1
2
9
45
24
3
1
1
1
4
3
0
0
0
15
24
15
21
10
9
16
4
6
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

14
13
13
12
12
12
12
12
12
11
12
12
13
15
16
16
18
18
19
20
20
20
21
23

Dew Point (°C)

13
13
12
12
12
11
11
11
11
11
11
12
12
12
12
12
12
12
12
12
13
13
12
13

Relative Humidity (%)

96
96
98
98
98
96
96
98
98
96
96
95
92
84
78
70
64
60
58
57
61
59
56
63

Pressure (mb)

1011
1011
1011
1012
1012
1011
1011
1011
1011
1011
1012
1012
1012
1011
1011
1011
1011
1010
1010
1010
1010
1010
1010
1009

Ozone (du)

354
354
357
359
359
360
361
362
363
365
365
367
368
368
369
370
371
370
370
368
361
358
359
361

Thursday 4

Waning Gibbous 81%

00:26

09:01

20 OK
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
15 Bad
16 Bad
17 Bad
18 Bad
19 Bad

Sun - Rise: 04:46, Set: 21:01, Transit: 12:54. Moon - Rise: 00:26, Set: 09:01. Civil Dark: 21:45 - 04:02. Nautical Dark: 22:49 - 02:57. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

40
50
98
100
100
100
100
100
100
100
100
100
94
88
83
83
83
81
88
94
100
100
100
100

Low Clouds (% Sky Obscured)

0
0
0
1
2
4
15
26
40
42
41
40
8
17
30
36
42
48
50
49
48
44
45
45

Medium Clouds (% Sky Obscured)

29
50
79
81
60
38
38
44
50
51
82
59
62
55
53
57
56
55
65
75
86
89
93
98

High Clouds (% Sky Obscured)

40
50
98
100
100
100
100
100
100
100
100
100
94
88
83
66
43
30
58
78
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
Very Light Rain
None
None
None
None
None
None
None
None
Very Light Rain

Precipitation Probability (%)

1
0
0
0
1
1
9
20
30
38
47
54
34
48
55
47
38
25
25
30
42
47
56
69

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

2
2
2
3
3
2
2
0
2
3
2
1
1
3
3
4
4
5
6
4
3
5
5
6

Chance of Frost

Temperature (°C)

19
16
15
14
14
14
14
13
13
12
13
15
16
18
20
21
21
22
22
22
21
21
19
17

Feels Like (°C)

21
18
16
13
13
13
13
13
12
12
13
15
15
17
18
18
19
19
19
22
22
21
21
22

Dew Point (°C)

13
12
12
11
11
12
12
12
11
11
11
11
11
12
12
12
11
11
10
10
10
10
11
11

Relative Humidity (%)

70
75
80
84
86
86
87
89
89
89
84
78
74
66
60
54
51
49
47
47
47
48
58
68

Pressure (mb)

1010
1010
1010
1010
1010
1010
1010
1010
1010
1010
1011
1011
1012
1011
1011
1011
1012
1012
1012
1012
1012
1013
1013
1014

Ozone (du)

362
359
353
351
349
348
345
344
344
346
343
342
341
342
342
343
343
343
343
345
347
348
351
353

Friday 5

Waning Gibbous 72%

00:45

10:15

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
15 Bad
16 Bad
17 Bad
18 Bad
19 Bad

Sun - Rise: 04:46, Set: 21:02, Transit: 12:54. Moon - Rise: 00:45, Set: 10:15. Civil Dark: 21:46 - 04:01. Nautical Dark: 22:51 - 02:56. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
100
100
92
84
76
71
66
61
70
77
85
86
88
88

Low Clouds (% Sky Obscured)

55
65
74
81
88
95
81
68
59
61
62
68
59
49
40
42
44
46
56
65
72
65
59
55

Medium Clouds (% Sky Obscured)

99
100
100
98
97
92
92
91
91
72
56
37
38
38
39
42
45
50
48
49
44
52
54
59

High Clouds (% Sky Obscured)

97
98
97
96
100
95
96
96
87
92
96
100
72
46
19
3
1
0
0
0
0
32
63
88

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

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

Precipitation Probability (%)

81
79
69
69
69
66
52
42
30
27
14
4
5
4
1
6
9
10
6
2
0
0
0
0

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

15
14
14
13
13
13
13
13
13
13
13
14
14
15
17
18
18
19
19
19
19
19
19
18

Feels Like (°C)

23
13
13
12
12
12
11
12
12
12
13
13
13
15
15
15
15
16
17
20
20
20
20
20

Dew Point (°C)

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

Relative Humidity (%)

83
87
90
93
96
96
96
96
96
96
93
92
89
77
66
57
54
51
48
51
55
59
63
66

Pressure (mb)

1015
1016
1016
1017
1018
1018
1018
1019
1019
1020
1020
1021
1021
1021
1022
1022
1022
1022
1022
1022
1022
1022
1022
1022

Ozone (du)

355
356
356
357
358
358
359
358
357
356
357
358
359
363
366
369
367
365
364
363
362
361
359
358

Saturday 6

Waning Gibbous 63%

01:01

11:29

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: 04:45, Set: 21:03, Transit: 12:55. Moon - Rise: 01:01, Set: 11:29. Civil Dark: 21:47 - 04:01. Nautical Dark: 22:52 - 02:55. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

82
78
78
71
66
68
72
72
73
79
84
87
88
91
95
96
97
98

Low Clouds (% Sky Obscured)

38
22
5
3
1
0
0
0
0
0
0
0
7
14
20
20
22
24

Medium Clouds (% Sky Obscured)

53
44
37
45
55
53
47
42
42
48
51
57
58
60
61
68
79
91

High Clouds (% Sky Obscured)

82
78
78
71
66
68
67
55
43
61
80
87
68
38
3
23
42
61

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 (%)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

17
16
14
12
12
11
11
10
10
10
12
14
16
17
18
19
20
20

Feels Like (°C)

19
17
16
16
15
14
13
10
10
10
10
10
9
16
17
17
17
17

Dew Point (°C)

12
10
9
8
8
7
7
7
7
7
7
8
9
9
9
9
9
9

Relative Humidity (%)

68
70
73
73
76
77
78
78
78
80
73
67
63
58
54
50
50
49

Pressure (mb)

1022
1023
1023
1024
1024
1024
1024
1024
1024
1024
1024
1024
1024
1023
1023
1023
1023
1022

Ozone (du)

356
356
356
356
356
355
354
354
354
354
355
355
356
357
359
360
361
362

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

Generated: 31/05/26 20:43:49. Forecast: 31/05/26 to 06/06/26. Timezone: UTC+2.00