Clear Outside v1.0 - International Weather Forecasts For Astronomers

Sunday 7

Waning Gibbous 63%

01:19

11:36

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

Sun - Rise: 04:53, Set: 21:08, Transit: 13:00. Moon - Rise: 01:19, Set: 11:36. Civil Dark: 21:52 - 04:09. Nautical Dark: 22:56 - 03:05. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

88
93
91
50
54
45
28
36
56
33
31
38
43
28
32
83
33
31
18
19
19
21
29
41

Low Clouds (% Sky Obscured)

44
13
2
1
1
11
1
0
10
33
31
38
29
23
12
8
8
4
2
0
0
11
0
3

Medium Clouds (% Sky Obscured)

79
90
55
46
42
19
20
23
29
11
2
9
25
5
13
26
16
31
18
19
19
21
21
20

High Clouds (% Sky Obscured)

54
7
0
0
1
9
11
19
30
1
3
5
13
12
14
70
8
3
0
0
3
3
16
38

ISS Passover

Visibility (miles)

8
9
7
8
8
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

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

Precipitation Probability (%)

55
58
59
36
7
11
28
14
2
1
0
0
0
0
0
0
0
0
0
1
0
0
0
0

Precipitation Amount (mm)

0.2
0.2
0.2
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
3
4
4
4
7
10
12
14
15
14
13
12
13
12
10
7
7
5
3
2
2
1

Chance of Frost

Temperature (°C)

16
15
15
14
14
16
17
19
21
21
22
22
23
23
23
23
23
22
21
18
16
15
15
13

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

68
80
87
90
92
86
77
69
58
50
46
42
40
37
37
40
48
55
67
70
72
76
82
83

Pressure (mb)

1018
1018
1019
1019
1020
1020
1021
1021
1021
1021
1021
1021
1021
1021
1020
1020
1020
1021
1021
1022
1022
1023
1023
1023

Ozone (du)

369
379
386
382
375
374
374
373
375
373
372
372
372
373
374
373
375
374
373
372
369
367
366
366

Monday 8

Third Quarter 52%

01:33

12:51

02 OK
03 OK
04 OK
05 Bad
06 Bad
07 Bad
08 OK
09 OK
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: 04:52, Set: 21:09, Transit: 13:01. Moon - Rise: 01:33, Set: 12:51. Civil Dark: 21:53 - 04:08. Nautical Dark: 22:57 - 03:04. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

47
20
37
66
80
78
45
36
67
72
100
91
79
88
92
98
100
100
100
100
100
92
99
100

Low Clouds (% Sky Obscured)

0
2
7
21
19
16
7
0
0
0
14
25
24
22
19
0
0
0
0
0
1
1
0
1

Medium Clouds (% Sky Obscured)

15
13
4
7
0
0
0
0
0
0
1
4
9
20
21
22
51
65
63
100
100
90
99
97

High Clouds (% Sky Obscured)

36
10
31
56
75
75
42
36
67
72
100
84
70
83
90
98
100
100
100
98
93
33
40
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
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
4
18

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)

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

Chance of Frost

Temperature (°C)

13
13
12
12
12
13
16
18
19
21
22
23
24
25
25
25
25
24
23
21
19
18
17
17

Feels Like (°C)

14
14
14
12
12
13
15
17
19
20
21
23
24
24
25
25
25
23
22
20
18
17
17
17

Dew Point (°C)

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

Relative Humidity (%)

84
84
87
87
84
78
72
64
58
53
49
44
42
42
42
43
52
63
69
69
71
71
77
81

Pressure (mb)

1023
1023
1023
1023
1023
1023
1022
1022
1022
1021
1020
1019
1019
1018
1017
1016
1015
1015
1015
1015
1015
1014
1014
1013

Ozone (du)

366
363
361
360
359
359
357
355
355
355
354
353
352
352
350
349
347
348
348
348
348
347
348
349

Tuesday 9

Waning Crescent 42%

01:46

14:07

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

Sun - Rise: 04:52, Set: 21:10, Transit: 13:01. Moon - Rise: 01:46, Set: 14:07. Civil Dark: 21:54 - 04:08. Nautical Dark: 22:58 - 03:03. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
100
100
100
100
98
100
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

8
30
30
30
41
54
54
65
73
77
65
67
53
60
50
45
3
4
8
25
36
17
11
2

Medium Clouds (% Sky Obscured)

99
99
88
88
100
92
100
100
100
99
100
100
97
100
97
100
100
65
76
82
96
88
91
86

High Clouds (% Sky Obscured)

100
97
100
100
100
100
100
100
100
87
100
100
100
78
95
100
100
100
100
100
100
100
100
100

ISS Passover

Visibility (miles)

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

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

Precipitation Probability (%)

45
15
30
68
84
86
95
95
95
95
95
95
86
65
88
54
38
37
48
27
20
20
1
0

Precipitation Amount (mm)

0.2
0
0
0.4
0.6
0.6
0.6
0.8
0.5
0.7
0.9
0.8
0.5
0.2
0.5
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

18
17
17
17
17
17
17
17
17
18
18
17
17
16
17
16
16
16
16
15
14
13
13
13

Feels Like (°C)

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

Dew Point (°C)

14
15
15
15
16
16
16
16
16
16
16
15
15
15
15
14
14
15
14
13
13
12
11
11

Relative Humidity (%)

81
88
86
86
93
95
95
95
93
92
86
89
89
90
87
86
86
90
89
89
90
90
90
92

Pressure (mb)

1013
1013
1013
1013
1013
1013
1014
1014
1014
1014
1014
1015
1016
1016
1016
1016
1016
1016
1017
1017
1018
1018
1018
1018

Ozone (du)

350
352
352
353
353
354
353
352
351
355
356
356
355
357
356
357
359
361
358
359
360
360
361
362

Wednesday 10

Waning Crescent 31%

02:02

15:27

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

Sun - Rise: 04:52, Set: 21:10, Transit: 13:01. Moon - Rise: 02:02, Set: 15:27. Civil Dark: 21:55 - 04:07. Nautical Dark: 22:59 - 03:03. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

100
86
100
97
100
100
100
100
97
99
99
99
99
93
100
100
99
92
98
100
100
85
70
61

Low Clouds (% Sky Obscured)

2
2
2
3
3
4
3
1
0
8
36
60
48
23
14
5
3
12
8
31
37
34
30
2

Medium Clouds (% Sky Obscured)

87
67
74
83
100
97
99
97
59
93
90
86
89
80
92
93
90
92
97
99
99
82
64
41

High Clouds (% Sky Obscured)

100
86
99
97
100
100
99
83
93
89
95
59
94
83
100
100
94
88
92
95
100
68
37
10

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
4
9
9
7
5
5
6
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
1
9
11
20
12
12
25
22
24
24
36
34
37
40
33
19
13
12
6

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

12
12
11
10
11
12
13
15
16
17
18
19
17
17
18
19
18
17
16
15
14
14
13
13

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

90
92
91
91
92
86
80
73
67
55
46
47
66
71
61
61
65
70
75
83
87
86
87
90

Pressure (mb)

1018
1018
1018
1018
1019
1019
1019
1018
1018
1018
1018
1017
1017
1017
1017
1017
1017
1017
1017
1017
1018
1018
1018
1018

Ozone (du)

365
367
363
360
360
361
361
361
362
361
358
361
361
363
362
364
366
363
361
361
361
360
362
363

Thursday 11

Waning Crescent 20%

02:02

16:52

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

Sun - Rise: 04:51, Set: 21:11, Transit: 13:01. Moon - Rise: 02:02, Set: 16:52. Civil Dark: 21:55 - 04:07. Nautical Dark: 23:00 - 03:02. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

72
87
95
100
100
99
99
98
98
98
99
99
94
89
84
89
92
96
93
89
87
87
86
85

Low Clouds (% Sky Obscured)

1
2
2
2
2
2
2
5
9
6
10
41
45
56
66
57
43
30
26
23
20
16
12
8

Medium Clouds (% Sky Obscured)

34
30
25
17
7
7
16
31
74
43
38
35
36
28
16
23
30
36
51
68
85
87
86
85

High Clouds (% Sky Obscured)

43
72
95
100
100
99
90
80
72
81
89
97
75
52
30
47
61
74
64
53
39
25
14
14

ISS Passover

Visibility (miles)

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

Precipitation Probability (%)

6
4
0
0
0
0
2
14
18
9
10
10
23
28
30
47
63
76
60
42
19
23
22
17

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.3
0.5
0.3
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

12
11
10
10
11
12
14
15
16
18
19
20
20
20
20
19
18
17
16
15
14
13
12
12

Feels Like (°C)

11
9
9
8
9
11
13
14
15
16
17
18
18
18
18
18
18
17
17
13
13
13
13
12

Dew Point (°C)

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

Relative Humidity (%)

92
91
91
90
90
86
78
74
66
59
52
48
45
49
53
57
64
71
77
79
82
83
84
86

Pressure (mb)

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

Ozone (du)

365
367
369
370
369
372
370
369
369
372
375
382
387
385
383
381
381
380
380
381
382
383
384
384

Friday 12

Waning Crescent 12%

02:21

18:21

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

Sun - Rise: 04:51, Set: 21:12, Transit: 13:01. Moon - Rise: 02:21, Set: 18:21. Civil Dark: 21:56 - 04:07. Nautical Dark: 23:01 - 03:01. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

88
95
100
99
98
98
98
98
99
99
99
100
100
100
100
100
100
100
100
100
100
100
100
99

Low Clouds (% Sky Obscured)

22
39
50
50
55
55
53
57
60
56
58
62
66
67
68
53
37
19
23
33
45
47
48
47

Medium Clouds (% Sky Obscured)

88
95
100
99
98
98
97
95
94
97
98
100
100
100
100
100
100
100
100
100
100
82
66
49

High Clouds (% Sky Obscured)

16
18
15
27
43
60
66
73
79
58
37
20
21
25
27
52
75
97
98
98
99
99
99
99

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
8
7
5
7
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

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

Precipitation Probability (%)

22
25
26
40
43
41
50
53
54
71
86
95
88
76
61
59
54
41
38
33
22
31
33
28

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0.3
0.5
0.7
0.6
0.4
0
0.2
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

12
12
12
12
12
12
12
13
14
15
15
15
16
16
16
16
15
15
14
13
12
12
11
10

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

87
87
87
87
87
87
87
86
83
80
74
68
64
60
58
56
59
61
65
66
67
71
72
74

Pressure (mb)

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

Ozone (du)

385
384
383
382
382
382
382
383
383
384
386
389
391
392
392
392
394
396
398
399
400
401
402
404

Saturday 13

Waning Crescent 5%

02:48

19:52

Sun - Rise: 04:51, Set: 21:12, Transit: 13:02. Moon - Rise: 02:48, Set: 19:52. Civil Dark: 21:57 - 04:06. Nautical Dark: 23:02 - 03:01. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

Low Clouds (% Sky Obscured)

Medium Clouds (% Sky Obscured)

High Clouds (% Sky Obscured)

ISS Passover

Visibility (miles)

Fog (%)

Precipitation Type

Precipitation Probability (%)

Precipitation Amount (mm)

Wind Speed/Direction (mph)

Chance of Frost

Temperature (°C)

Feels Like (°C)

Dew Point (°C)

Relative Humidity (%)

Pressure (mb)

Ozone (du)

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

Generated: 07/06/26 02:14:07. Forecast: 07/06/26 to 13/06/26. Timezone: UTC+2.00