Clear Outside v1.0 - International Weather Forecasts For Astronomers

Thursday 28

Waxing Gibbous 94%

18:22

03:18

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

Sun - Rise: 04:51, Set: 20:54, Transit: 12:53. Moon - Rise: 18:22, Set: 03:18. Civil Dark: 21:37 - 04:08. Nautical Dark: 22:38 - 03:07. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

1
1
4
3
41
38
43
33
60
43
35
64
31
36
37
21
2
10
5
4
12
10
27
21

Low Clouds (% Sky Obscured)

0
0
0
3
41
38
39
33
45
43
35
31
29
36
36
21
1
8
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
54
0
0
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

1
1
0
0
2
7
21
7
54
5
6
8
8
8
6
0
2
3
4
3
12
8
27
21

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

5
5
5
5
4
2
2
2
3
3
4
4
5
6
7
8
6
5
5
4
3
3
3
3

Relative Humidity (%)

84
81
69
61
49
40
36
35
36
36
36
37
40
46
52
61
62
65
70
72
70
71
71
73

Pressure (mb)

1024
1024
1024
1024
1024
1023
1023
1023
1023
1023
1022
1022
1022
1022
1023
1023
1024
1024
1025
1025
1026
1026
1026
1026

Ozone (du)

327
329
330
332
334
335
337
337
338
340
340
341
343
343
342
342
342
342
342
342
342
342
343
344

Friday 29

Waxing Gibbous 98%

19:34

03:39

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

Sun - Rise: 04:50, Set: 20:55, Transit: 12:53. Moon - Rise: 19:34, Set: 03:39. Civil Dark: 21:38 - 04:07. Nautical Dark: 22:39 - 03:05. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

15
22
19
5
3
28
41
45
52
76
34
27
5
1
3
7
6
37
67
100
67
79
80
89

Low Clouds (% Sky Obscured)

0
0
0
0
0
28
41
42
35
43
32
27
4
0
0
0
0
0
0
0
0
0
2
24

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
31
93
57
79
72
89

High Clouds (% Sky Obscured)

15
22
19
5
3
6
11
11
41
66
9
2
2
1
3
6
6
37
48
100
56
47
46
31

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
14

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
3
2
2
3
4
5
5
6
7
7
8
7
6
4
2
3
3
3
3
2
2
2
2

Chance of Frost

Temperature (°C)

7
8
10
14
15
17
18
19
20
20
21
21
21
21
20
18
15
13
12
11
11
11
11
11

Feels Like (°C)

6
7
10
13
15
16
17
18
18
18
18
19
21
21
21
20
17
14
11
11
10
10
10
10

Dew Point (°C)

3
3
4
6
6
7
7
7
8
9
8
8
9
10
13
13
11
9
8
7
6
6
6
7

Relative Humidity (%)

75
73
66
60
55
52
49
47
46
46
44
43
45
51
63
72
76
77
76
73
71
70
67
73

Pressure (mb)

1026
1026
1026
1026
1026
1025
1025
1025
1024
1023
1023
1022
1022
1021
1021
1021
1022
1022
1022
1022
1021
1021
1020
1020

Ozone (du)

343
343
344
343
344
344
345
345
344
344
346
347
348
347
346
348
347
345
343
339
338
338
339
340

Saturday 30

Waxing Gibbous 100%

20:45

04:08

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

Sun - Rise: 04:49, Set: 20:56, Transit: 12:53. Moon - Rise: 20:45, Set: 04:08. Civil Dark: 21:39 - 04:06. Nautical Dark: 22:41 - 03:04. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

82
100
100
100
100
98
86
90
75
50
42
30
33
46
34
17
3
5
55
50
51
40
42
69

Low Clouds (% Sky Obscured)

25
30
23
53
47
16
25
33
75
37
38
30
33
46
34
17
0
0
5
0
0
0
0
0

Medium Clouds (% Sky Obscured)

82
92
86
100
100
97
86
9
69
38
1
0
0
0
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

38
99
100
94
70
50
45
40
30
0
0
0
0
0
0
0
3
3
31
30
33
34
38
50

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
3
3
5
5
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
Very Light Rain
None
Very Light Rain
Very Light Rain
Very Light Rain
Very Light Rain
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

10
32
17
41
60
56
70
73
71
58
43
14
5
1
0
0
0
0
0
1
0
0
0
0

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

12
13
13
14
14
14
17
18
19
21
21
22
22
21
20
18
15
14
12
12
11
11
10
10

Feels Like (°C)

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

Dew Point (°C)

8
8
9
10
11
11
12
14
15
14
13
14
12
12
11
12
10
9
8
8
8
9
9
9

Relative Humidity (%)

75
75
79
78
82
83
72
77
76
65
59
60
53
53
57
65
70
74
76
79
84
87
91
91

Pressure (mb)

1020
1020
1019
1019
1019
1019
1017
1017
1016
1015
1014
1014
1014
1014
1014
1015
1015
1015
1016
1016
1016
1016
1016
1016

Ozone (du)

344
345
347
352
354
353
353
353
354
354
355
354
353
350
350
350
351
352
352
351
348
346
346
346

Sunday 31

Full Moon 100%

21:50

04:47

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
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad
01 Bad
02 Bad
03 Bad
04 Bad

Sun - Rise: 04:49, Set: 20:57, Transit: 12:53. 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)

67
65
62
60
79
100
67
98
87
82
82
100
83
63
85
100
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

1
1
2
9
24
42
24
29
21
25
17
18
32
29
45
60
66
72
75
79
80
81
81
61

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
6
12
18
18
18
96
36
39
39
68
93
96
97
98
100
100
95
95

High Clouds (% Sky Obscured)

41
36
31
42
70
100
61
43
13
26
54
100
59
59
56
68
98
99
100
100
100
75
49
24

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
8
9
9
9
9
5
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
Very Light Rain
None
None
Light Rain
Very Light Rain
Very Light Rain
Light Rain

Precipitation Probability (%)

0
0
0
0
0
12
2
3
2
8
11
15
17
16
22
35
56
65
60
69
90
78
67
92

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.3
0
0
0.4
0.3
0.3
0.7

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

10
11
13
15
16
18
19
21
21
22
22
21
21
20
19
18
17
16
15
15
15
14
14
14

Feels Like (°C)

9
11
12
14
16
17
18
21
19
21
21
19
19
19
20
19
17
15
15
15
15
15
15
14

Dew Point (°C)

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

Relative Humidity (%)

93
90
83
78
72
68
65
59
55
53
52
51
53
58
64
72
68
78
95
95
95
95
96
96

Pressure (mb)

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

Ozone (du)

347
348
349
350
349
350
350
348
345
344
343
345
348
349
349
348
350
352
353
358
363
361
359
355

Monday 1

Waning Gibbous 97%

22:45

No Set

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
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad
01 Bad
02 Bad
03 Bad
04 Bad

Sun - Rise: 04:48, Set: 20:58, Transit: 12:54. Moon - Rise: 22:45, Set: No Set. Civil Dark: 21:42 - 04:04. Nautical Dark: 22:45 - 03:01. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

100
100
100
100
99
99
97
56
94
95
72
88
94
80
44
45
69
92
93
95
98
86
74
63

Low Clouds (% Sky Obscured)

66
78
77
75
75
68
66
38
60
35
50
45
34
28
23
14
26
38
39
39
40
45
50
52

Medium Clouds (% Sky Obscured)

99
100
100
97
94
93
80
55
91
92
36
43
42
52
36
43
62
82
84
89
95
75
56
37

High Clouds (% Sky Obscured)

49
75
100
84
71
57
42
19
7
5
2
18
25
18
1
4
9
13
27
42
43
28
18
6

ISS Passover

Visibility (miles)

9
3
3
7
7
4
6
4
2
8
4
8
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
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Very Light Rain
Light Rain
Very Light Rain
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

95
95
88
95
95
95
90
93
66
78
70
57
41
29
21
8
5
2
7
8
5
6
3
0

Precipitation Amount (mm)

1
0.6
0.3
0.5
0.6
0.6
0.5
0.8
0.3
0.4
0.3
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

1
2
3
3
5
7
8
7
8
7
8
8
8
7
5
3
3
3
3
2
1
1
1
1

Chance of Frost

Temperature (°C)

13
14
14
14
15
15
15
17
17
16
17
18
18
17
16
15
13
12
12
11
11
10
10
9

Feels Like (°C)

14
14
14
14
14
13
13
15
17
15
16
15
15
15
15
15
14
13
13
13
13
12
9
9

Dew Point (°C)

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

Relative Humidity (%)

96
98
96
93
87
89
93
81
78
89
73
66
59
61
64
73
75
76
79
81
85
88
90
91

Pressure (mb)

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

Ozone (du)

355
355
358
360
364
369
371
372
375
379
387
390
390
388
387
386
385
385
385
383
381
380
377
375

Tuesday 2

Waning Gibbous 94%

23:29

05:38

05 Bad
06 OK
07 OK
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

Sun - Rise: 04:47, Set: 20:59, Transit: 12:54. Moon - Rise: 23:29, Set: 05:38. Civil Dark: 21:43 - 04:03. Nautical Dark: 22:46 - 03:00. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

54
48
43
48
52
52
63
68
79
87
91
97
97
97
97
98
99
100
100
100
100
100
99
98

Low Clouds (% Sky Obscured)

39
27
15
20
27
34
39
43
48
55
62
71
66
61
57
47
37
28
29
31
32
31
30
33

Medium Clouds (% Sky Obscured)

23
12
2
9
30
48
63
68
79
82
79
76
74
81
88
79
70
60
70
81
95
88
84
73

High Clouds (% Sky Obscured)

14
29
43
48
52
52
63
68
79
85
75
60
68
76
84
89
94
100
68
37
5
14
24
33

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
Very Light Rain
None
None
None

Precipitation Probability (%)

0
0
0
3
4
2
9
11
11
14
16
14
22
19
15
27
29
31
48
48
52
42
23
11

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.2
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

9
10
12
14
16
17
18
19
20
20
20
20
20
19
18
17
16
15
14
14
14
14
14
14

Feels Like (°C)

10
9
9
9
17
17
17
17
18
18
20
20
19
19
19
20
16
16
16
15
15
14
13
13

Dew Point (°C)

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

Relative Humidity (%)

95
87
81
75
70
65
60
58
56
55
57
58
60
65
69
74
78
80
84
86
86
86
86
86

Pressure (mb)

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

Ozone (du)

372
369
367
364
363
362
360
359
358
356
355
353
352
351
350
350
349
348
347
347
346
346
345
345

Wednesday 3

Waning Gibbous 88%

00:02

06:40

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
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad
01 Bad

Sun - Rise: 04:47, Set: 21:00, Transit: 12:54. Moon - Rise: 00:02, Set: 06:40. Civil Dark: 21:44 - 04:03. Nautical Dark: 22:48 - 02:59. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

97
96
96
97
98
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

36
39
38
45
48
55
63
67
70
76
79
80
76
75
72
69
65
62
65
68
75

Medium Clouds (% Sky Obscured)

67
58
50
66
82
97
97
99
99
95
91
84
76
68
59
45
30
16
25
31
37

High Clouds (% Sky Obscured)

25
16
7
38
69
100
100
100
100
100
100
100
100
100
100
100
100
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

Fog (%)

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

Precipitation Probability (%)

10
5
0
1
1
0
1
2
1
22
38
51
54
62
70
51
36
15
17
15
9

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

5
6
6
6
6
6
7
7
7
7
6
6
7
6
7
7
7
6
6
6
5

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

13
12
11
10
17
17
17
17
18
19
21
20
20
19
19
18
17
16
16
17
16

Dew Point (°C)

11
11
10
10
10
10
10
10
11
11
13
13
14
15
14
15
14
14
14
14
13

Relative Humidity (%)

86
79
73
67
62
56
51
52
52
53
62
71
82
85
85
87
87
87
87
87
87

Pressure (mb)

1011
1011
1011
1011
1011
1011
1011
1011
1010
1010
1010
1010
1010
1010
1010
1010
1010
1010
1010
1010
1010

Ozone (du)

344
344
344
344
345
345
346
346
346
346
346
345
345
345
346
346
347
347
348
348
348

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

Generated: 28/05/26 05:07:44. Forecast: 28/05/26 to 03/06/26. Timezone: UTC+2.00