Clear Outside v1.0 - International Weather Forecasts For Astronomers

Sunday 28

Waxing Gibbous 99%

20:45

03:41

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

Sun - Rise: 04:55, Set: 21:15, Transit: 13:05. Moon - Rise: 20:45, Set: 03:41. Civil Dark: 22:00 - 04:10. Nautical Dark: 23:05 - 03:05. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

47
38
30
32
12
17
9
16
2
11
33
38
100
100
100
74
95
100
100
100
70
62
60
67

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
3
1
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
9
33
38
51
16
0
0
22
25
10
0
0
13
22
22

High Clouds (% Sky Obscured)

4
5
27
24
12
17
9
16
2
3
0
2
100
100
100
74
75
100
100
100
70
62
56
61

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
Light Rain
None
None
None
None
None
None

Precipitation Probability (%)

0
0
0
0
0
0
0
0
0
0
2
11
31
7
6
43
43
55
5
8
1
2
6
29

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.4
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

22
24
26
28
31
33
35
37
39
39
39
39
39
37
34
32
30
27
27
26
25
24
23
23

Feels Like (°C)

25
27
28
30
33
35
36
39
40
42
41
41
40
38
33
33
32
27
28
27
26
25
25
24

Dew Point (°C)

17
16
15
15
15
15
15
16
16
16
16
17
17
21
25
24
25
22
23
22
21
21
21
20

Relative Humidity (%)

69
62
53
45
37
33
30
28
26
25
26
26
28
38
60
62
71
77
77
78
80
82
84
85

Pressure (mb)

1018
1018
1018
1018
1017
1017
1017
1017
1016
1016
1015
1014
1015
1015
1016
1016
1017
1018
1018
1018
1018
1018
1018
1018

Ozone (du)

322
321
320
321
320
319
319
319
319
319
320
320
316
314
314
313
311
313
314
314
316
317
316
317

Monday 29

Waxing Gibbous 100%

21:32

04:40

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

Sun - Rise: 04:55, Set: 21:15, Transit: 13:05. Moon - Rise: 21:32, Set: 04:40. Civil Dark: 22:00 - 04:11. Nautical Dark: 23:05 - 03:06. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

74
29
39
48
33
23
12
19
25
72
66
89
100
100
100
100
100
100
100
100
60
61
51
65

Low Clouds (% Sky Obscured)

0
0
0
0
4
23
12
0
0
0
0
0
0
9
35
54
62
79
64
53
60
61
51
65

Medium Clouds (% Sky Obscured)

26
8
31
48
22
18
0
19
25
19
6
24
19
25
58
75
34
50
42
36
45
44
24
39

High Clouds (% Sky Obscured)

62
24
16
3
12
0
0
0
0
40
50
85
100
100
100
100
100
100
100
100
38
42
13
40

ISS Passover

Visibility (miles)

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

Precipitation Probability (%)

24
19
21
17
15
7
8
11
5
12
11
20
77
95
95
85
23
95
95
27
10
7
0
2

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0.4
1
0.6
0.2
0
0.9
2.5
0
0
0
0
0

Wind Speed/Direction (mph)

3
4
3
5
7
9
10
12
11
11
11
13
13
12
13
11
9
7
3
6
5
5
5
4

Chance of Frost

Temperature (°C)

23
25
27
29
30
31
32
31
31
32
32
31
30
29
27
25
24
24
22
21
21
21
20
20

Feels Like (°C)

24
27
30
32
33
33
35
34
34
34
33
31
30
29
27
25
24
25
25
22
22
23
23
24

Dew Point (°C)

20
20
21
21
21
19
19
17
17
17
17
16
18
21
25
24
22
22
21
20
19
19
19
19

Relative Humidity (%)

83
76
70
64
57
51
46
43
41
40
40
42
47
64
88
94
87
88
89
89
89
88
91
93

Pressure (mb)

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

Ozone (du)

316
315
315
315
317
317
317
317
318
318
318
317
318
315
309
313
317
318
316
314
314
318
318
316

Tuesday 30

Full Moon 99%

22:08

05:47

06 Bad
07 Bad
08 Bad
09 Bad
10 Bad
11 Bad
12 Bad
13 Bad
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 Bad

Sun - Rise: 04:56, Set: 21:15, Transit: 13:05. Moon - Rise: 22:08, Set: 05:47. Civil Dark: 21:59 - 04:12. Nautical Dark: 23:04 - 03:07. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

63
66
68
59
72
68
66
62
35
42
48
47
69
70
70
100
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

63
66
68
59
72
68
66
62
35
40
48
47
69
70
61
50
55
52
37
61
65
67
69
75

Medium Clouds (% Sky Obscured)

47
49
48
36
26
22
23
26
6
2
16
30
49
55
36
52
62
83
90
96
86
76
67
79

High Clouds (% Sky Obscured)

2
4
36
12
5
11
5
22
4
14
3
6
30
45
35
100
100
100
100
100
100
100
100
62

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
7
9
1
9
1
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
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
None
None
Light Rain

Precipitation Probability (%)

1
10
16
2
0
0
0
4
7
8
12
8
8
18
89
95
95
95
95
95
95
69
42
95

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.6
1.9
0.4
1.9
0.5
0.8
0.9
0
0
0.7

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

20
20
21
21
22
23
25
25
26
28
29
28
28
27
26
24
22
22
21
21
20
20
20
20

Feels Like (°C)

23
23
24
24
26
26
27
28
29
31
31
32
31
30
30
27
24
23
23
23
22
22
21
22

Dew Point (°C)

19
18
17
17
16
16
16
15
15
16
16
15
15
15
18
19
20
20
20
20
20
20
19
19

Relative Humidity (%)

93
88
81
75
67
62
57
53
50
47
46
45
45
47
61
75
87
89
91
93
95
96
95
93

Pressure (mb)

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

Ozone (du)

317
317
317
316
315
316
319
321
324
325
325
326
326
327
330
330
326
326
330
326
321
321
319
316

Wednesday 1

Waning Gibbous 96%

22:35

No Set

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 OK
03 Bad
04 OK
05 Good

Sun - Rise: 04:57, Set: 21:15, Transit: 13:05. Moon - Rise: 22:35, Set: No Set. Civil Dark: 21:59 - 04:13. Nautical Dark: 23:04 - 03:08. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

81
83
96
100
100
100
100
100
100
100
100
97
94
91
94
84
100
71
65
50
32
54
30
2

Low Clouds (% Sky Obscured)

81
83
76
64
53
45
37
29
34
40
45
41
37
33
30
27
23
28
33
37
25
12
0
0

Medium Clouds (% Sky Obscured)

52
58
66
95
100
100
100
100
100
100
100
95
89
79
70
48
20
26
31
36
24
12
0
0

High Clouds (% Sky Obscured)

56
73
91
100
100
100
100
100
100
99
100
77
54
32
55
60
100
52
30
3
2
29
25
2

ISS Passover

Visibility (miles)

9
9
9
9
9
8
5
9
7
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
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

95
95
95
95
95
95
89
60
44
21
9
4
2
2
3
3
0
0
0
0
0
0
0
0

Precipitation Amount (mm)

1.1
0.9
0.9
0.9
0.8
0.9
0.4
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

3
4
6
7
10
11
11
10
12
10
9
9
7
6
5
4
3
4
4
3
4
4
3
4

Chance of Frost

Temperature (°C)

20
20
21
21
22
22
22
22
22
23
23
24
23
23
22
21
20
19
18
17
17
16
16
15

Feels Like (°C)

22
22
22
22
21
21
22
22
20
21
22
23
23
22
21
19
19
18
19
18
18
17
15
15

Dew Point (°C)

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

Relative Humidity (%)

92
89
84
77
69
75
87
89
91
85
73
71
66
61
62
60
67
66
69
73
74
77
79
82

Pressure (mb)

1015
1015
1016
1016
1016
1016
1017
1017
1017
1018
1018
1018
1018
1018
1018
1019
1020
1020
1020
1020
1020
1020
1020
1020

Ozone (du)

320
321
319
319
320
321
320
322
323
325
327
328
329
325
325
327
331
331
335
334
336
339
343
349

Thursday 2

Waning Gibbous 92%

22:56

06:59

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

Sun - Rise: 04:58, Set: 21:14, Transit: 13:06. Moon - Rise: 22:56, Set: 06:59. Civil Dark: 21:59 - 04:13. Nautical Dark: 23:03 - 03:09. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

6
0
0
0
5
15
26
39
41
66
64
55
54
50
59
56
54
64
74
82
87
93
99
96

Low Clouds (% Sky Obscured)

0
0
0
0
0
11
22
32
34
34
35
26
16
5
23
26
27
28
28
25
33
48
59
55

Medium Clouds (% Sky Obscured)

0
0
0
0
0
11
21
35
35
35
37
40
45
48
56
49
42
50
55
63
65
66
58
41

High Clouds (% Sky Obscured)

6
0
0
0
4
1
0
2
2
21
20
4
0
0
0
0
0
18
34
59
69
75
81
89

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
Light Rain
Light Rain
Light Rain

Precipitation Probability (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
2
37
80
95
95

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.5
0.9
0.7

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

17
18
19
21
22
23
24
25
26
26
26
26
26
25
24
23
21
19
19
19
19
19
18
18

Feels Like (°C)

18
19
22
22
23
24
25
27
27
27
26
26
26
25
25
24
23
22
22
21
20
19
19
18

Dew Point (°C)

14
13
14
14
13
11
11
11
11
10
10
10
10
12
15
14
13
12
12
11
11
11
10
10

Relative Humidity (%)

82
74
70
64
55
47
43
40
37
35
34
34
36
44
57
57
60
61
60
59
57
59
60
61

Pressure (mb)

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

Ozone (du)

356
368
354
346
340
336
334
332
331
329
327
325
324
321
319
318
318
318
317
316
315
317
319
321

Friday 3

Waning Gibbous 85%

23:12

08:13

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
05 OK

Sun - Rise: 04:58, Set: 21:14, Transit: 13:06. Moon - Rise: 23:12, Set: 08:13. Civil Dark: 21:58 - 04:14. Nautical Dark: 23:02 - 03:11. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

91
87
77
66
54
54
54
58
64
62
50
55
59
58
48
46
47
39
34
30
35
30
25
10

Low Clouds (% Sky Obscured)

53
51
52
52
52
48
46
42
54
53
50
55
59
58
48
46
47
39
34
30
35
30
25
10

Medium Clouds (% Sky Obscured)

26
12
8
4
0
10
26
38
46
46
50
42
33
29
28
24
23
29
34
30
35
30
25
10

High Clouds (% Sky Obscured)

91
87
63
31
1
4
7
10
7
4
0
4
9
16
16
15
13
11
6
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

Light Rain
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 (%)

75
19
23
21
14
11
6
0
1
2
3
6
9
11
11
11
14
27
40
43
51
45
33
29

Precipitation Amount (mm)

0.4
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)

7
9
11
12
13
14
14
14
13
14
14
15
14
12
11
10
9
8
8
8
9
8
8
8

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

18
18
18
17
17
17
17
17
16
20
19
19
19
18
19
16
16
17
16
16
16
13
13
14

Dew Point (°C)

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

Relative Humidity (%)

64
66
70
62
55
48
43
38
34
35
34
35
38
42
47
52
58
64
67
70
74
76
79
81

Pressure (mb)

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

Ozone (du)

323
326
328
329
331
332
332
332
332
331
331
331
331
331
331
331
331
332
332
333
333
332
332
331

Saturday 4

Waning Gibbous 77%

23:26

09:26

06 OK
07 OK
08 OK
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 OK
22 OK
23 OK
00 OK
01 OK

Sun - Rise: 04:59, Set: 21:14, Transit: 13:06. Moon - Rise: 23:26, Set: 09:26. Civil Dark: 21:58 - 04:15. Nautical Dark: 23:01 - 03:12. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

10
10
10
14
23
28
33
43
67
62
52
67
63
60
49
37
26
25
24
22

Low Clouds (% Sky Obscured)

10
10
10
14
23
28
33
35
24
13
0
11
22
33
27
24
18
20
18
19

Medium Clouds (% Sky Obscured)

10
10
10
14
23
28
33
43
47
47
43
41
40
38
25
13
0
0
0
0

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
1
3
3
4
5
8
5
4
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

Fog (%)

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

Precipitation Probability (%)

28
25
37
44
48
34
18
2
9
11
7
9
11
4
3
1
0
1
1
0

Precipitation Amount (mm)

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

Chance of Frost

Temperature (°C)

14
14
15
16
17
18
19
20
20
20
20
20
20
19
19
18
17
15
15
14

Feels Like (°C)

13
11
10
15
15
14
15
15
15
20
18
18
20
20
22
17
17
18
17
17

Dew Point (°C)

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

Relative Humidity (%)

75
69
63
54
46
40
35
31
28
25
23
21
27
33
41
44
47
51
54
58

Pressure (mb)

1022
1022
1022
1022
1022
1022
1021
1021
1020
1020
1020
1019
1020
1020
1020
1020
1020
1020
1020
1021

Ozone (du)

330
329
329
330
331
333
334
335
336
337
338
339
340
341
341
343
345
347
345
343

Forecast for Letňany, Praha 18, Czech Republic (50.14,14.52)

Generated: 28/06/26 06:21:02. Forecast: 28/06/26 to 04/07/26. Timezone: UTC+2.00