Clear Outside v1.0 - International Weather Forecasts For Astronomers

Friday 15

Waning Crescent 0%

04:23

20:57

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
20 Bad

Sun - Rise: 05:13, Set: 20:43, Transit: 12:58. Moon - Rise: 04:23, Set: 20:57. Civil Dark: 21:21 - 04:33. Nautical Dark: 22:14 - 03:39. Astro Dark: 23:27 - 02:25

Total Clouds (% Sky Obscured)

90
92
94
94
100
100
100
100
100
100
100
100
100
100
100
100
99
100
98
86
82
71
69
99

Low Clouds (% Sky Obscured)

37
35
36
44
59
65
68
79
79
78
76
76
73
56
43
54
57
56
24
58
43
45
57
53

Medium Clouds (% Sky Obscured)

89
92
94
89
100
100
100
100
100
100
100
100
100
100
100
100
96
98
55
33
38
47
39
37

High Clouds (% Sky Obscured)

90
92
81
72
100
100
100
100
100
100
100
100
100
100
100
100
65
65
65
2
63
42
35
95

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
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
None
None
None
None
None
None
None
None

Precipitation Probability (%)

54
49
39
3
6
7
11
22
14
16
20
18
14
44
50
33
30
14
14
26
24
16
3
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

8
8
7
6
6
6
6
6
6
7
7
7
7
7
6
6
4
4
4
4
7
7
8
8

Relative Humidity (%)

75
80
82
84
88
90
90
91
91
91
91
87
82
76
67
63
55
52
50
50
60
60
68
72

Pressure (mb)

1002
1002
1003
1003
1003
1003
1003
1003
1003
1004
1004
1005
1005
1006
1006
1007
1007
1007
1007
1007
1008
1008
1009
1010

Ozone (du)

413
411
411
410
410
414
412
411
410
410
411
411
409
410
410
410
411
413
415
416
410
408
408
406

Saturday 16

New Moon 1%

04:55

20:57

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

Sun - Rise: 05:11, Set: 20:44, Transit: 12:58. Moon - Rise: 04:55, Set: 20:57. Civil Dark: 21:23 - 04:31. Nautical Dark: 22:16 - 03:37. Astro Dark: 23:31 - 02:21

Total Clouds (% Sky Obscured)

81
55
44
63
79
76
40
40
19
23
4
0
0
19
15
34
49
81
80
38
38
53
51
59

Low Clouds (% Sky Obscured)

41
25
30
33
15
2
2
2
2
1
0
0
0
6
2
3
13
28
47
3
11
18
16
20

Medium Clouds (% Sky Obscured)

28
29
27
23
65
55
36
40
19
23
4
0
0
19
15
34
46
54
52
38
25
21
22
23

High Clouds (% Sky Obscured)

63
30
40
59
77
70
25
25
2
2
0
0
0
0
0
0
0
0
0
0
0
0
2
14

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
1
4
6
2
3
4
3
8
8
4

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)

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

Chance of Frost

Temperature (°C)

10
9
8
7
6
6
6
5
5
5
6
9
11
13
14
15
16
17
16
16
17
16
16
14

Feels Like (°C)

8
7
7
7
5
5
4
5
4
4
6
9
11
12
14
15
17
16
15
15
17
16
15
14

Dew Point (°C)

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

Relative Humidity (%)

73
77
82
85
85
86
86
88
89
89
81
72
65
57
49
46
46
45
46
45
44
49
63
64

Pressure (mb)

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

Ozone (du)

405
405
406
406
405
405
407
405
399
394
390
390
391
393
393
391
388
384
384
383
382
382
381
382

Sunday 17

Waxing Crescent 5%

05:42

22:25

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

Sun - Rise: 05:10, Set: 20:46, Transit: 12:58. Moon - Rise: 05:42, Set: 22:25. Civil Dark: 21:24 - 04:30. Nautical Dark: 22:18 - 03:35. Astro Dark: 23:35 - 02:17

Total Clouds (% Sky Obscured)

56
46
70
65
64
71
90
88
38
29
38
44
37
28
9
26
30
54
77
96
76
43
38
52

Low Clouds (% Sky Obscured)

20
13
13
2
2
2
4
2
2
2
2
2
2
2
2
2
5
23
32
50
26
3
15
16

Medium Clouds (% Sky Obscured)

25
23
29
25
26
56
66
67
38
29
38
42
29
18
0
12
13
24
29
28
27
34
26
27

High Clouds (% Sky Obscured)

1
7
57
65
64
50
80
85
5
2
3
5
7
7
7
7
7
2
6
39
27
10
8
29

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 (%)

2
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
0
1
2
2
1

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

Chance of Frost

Temperature (°C)

12
11
10
9
8
8
7
7
6
6
8
10
12
14
16
17
18
19
19
18
18
18
17
16

Feels Like (°C)

11
11
10
8
7
6
7
5
5
6
8
9
11
14
16
17
18
19
18
17
16
17
17
16

Dew Point (°C)

6
6
7
6
6
5
5
4
4
4
5
5
6
7
7
7
6
6
6
8
10
9
10
10

Relative Humidity (%)

67
72
78
82
84
82
82
82
87
85
79
73
66
61
55
49
46
43
43
51
61
54
62
67

Pressure (mb)

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

Ozone (du)

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

Monday 18

Waxing Crescent 11%

06:47

23:41

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
20 Bad

Sun - Rise: 05:09, Set: 20:47, Transit: 12:58. Moon - Rise: 06:47, Set: 23:41. Civil Dark: 21:26 - 04:28. Nautical Dark: 22:21 - 03:33. Astro Dark: 23:39 - 02:13

Total Clouds (% Sky Obscured)

89
85
93
83
100
98
96
95
94
93
93
91
90
89
81
64
76
83
79
78
66
55
47
48

Low Clouds (% Sky Obscured)

18
41
60
49
68
70
73
70
75
74
75
75
75
76
64
38
39
63
47
33
27
12
2
8

Medium Clouds (% Sky Obscured)

25
29
37
50
78
82
78
82
73
79
75
76
77
68
54
47
57
46
43
40
31
37
36
37

High Clouds (% Sky Obscured)

75
63
61
78
100
72
35
13
1
5
23
7
2
0
2
2
6
11
25
30
25
25
15
15

ISS Passover

Visibility (miles)

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

Precipitation Probability (%)

1
3
19
42
27
18
8
10
29
59
69
53
45
48
43
47
58
58
50
37
34
34
21
18

Precipitation Amount (mm)

0
0
0
0.3
0
0
0
0
0
0.4
0.8
0.3
0
0
0
0
0.3
0.3
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

13
11
10
10
10
10
9
8
8
8
9
10
11
13
13
14
16
15
15
15
15
15
15
14

Dew Point (°C)

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

Relative Humidity (%)

69
67
70
71
83
85
88
88
88
90
93
93
87
78
74
66
58
57
67
58
56
62
71
75

Pressure (mb)

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

Ozone (du)

385
382
380
377
375
375
376
381
385
386
384
375
369
367
366
364
361
358
356
354
354
353
354
354

Tuesday 19

Waxing Crescent 20%

08:07

00:36

21 Bad
22 Bad
23 OK
00 OK
01 OK
02 OK
03 OK
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

Sun - Rise: 05:08, Set: 20:48, Transit: 12:58. Moon - Rise: 08:07, Set: 00:36. Civil Dark: 21:28 - 04:27. Nautical Dark: 22:23 - 03:31. Astro Dark: 23:43 - 02:09

Total Clouds (% Sky Obscured)

49
46
35
28
30
25
30
35
54
73
84
83
81
62
76
77
85
80
74
68
65
64
63
52

Low Clouds (% Sky Obscured)

15
22
5
4
16
19
30
30
35
40
45
45
45
26
39
33
49
41
37
29
27
23
20
14

Medium Clouds (% Sky Obscured)

34
35
23
14
4
16
20
25
15
12
27
29
26
5
42
36
25
40
49
51
42
34
27
19

High Clouds (% Sky Obscured)

15
10
5
10
10
11
15
15
23
39
58
54
49
43
38
33
22
23
23
26
41
56
63
52

ISS Passover

Visibility (miles)

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

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
Very Light Rain
Light Rain
Light Rain
Light Rain
Very Light Rain
Very Light Rain
Very Light Rain
Very Light Rain
Very Light Rain
Light Rain
Very Light Rain

Precipitation Probability (%)

18
5
0
0
0
4
13
31
39
36
32
31
41
59
84
91
75
64
63
63
65
67
69
57

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0.3
0.7
0.8
0.4
0.3
0.3
0.2
0.3
0.3
0.4
0.3

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

12
11
10
9
9
8
7
7
8
9
10
11
12
14
16
15
16
15
15
15
15
15
15
16

Dew Point (°C)

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

Relative Humidity (%)

82
83
83
84
84
84
85
85
91
93
93
93
93
89
76
73
70
82
78
74
69
74
79
86

Pressure (mb)

1020
1020
1020
1021
1021
1021
1021
1021
1021
1021
1021
1021
1022
1021
1021
1021
1021
1021
1021
1021
1021
1021
1021
1021

Ozone (du)

352
353
356
358
359
360
361
361
366
369
370
371
371
371
371
370
370
370
368
367
366
366
366
367

Wednesday 20

Waxing Crescent 31%

09:33

01:14

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

Sun - Rise: 05:06, Set: 20:50, Transit: 12:58. Moon - Rise: 09:33, Set: 01:14. Civil Dark: 21:29 - 04:26. Nautical Dark: 22:25 - 03:30. Astro Dark: 23:47 - 02:05

Total Clouds (% Sky Obscured)

40
25
40
58
75
63
44
27
46
67
88
89
89
91
91
94
99
99
99
99
84
66
50
40

Low Clouds (% Sky Obscured)

8
3
3
3
2
5
8
9
23
39
54
52
57
60
43
31
21
31
39
47
33
19
4
4

Medium Clouds (% Sky Obscured)

12
7
10
12
10
8
6
6
6
10
12
33
51
67
72
78
85
88
92
96
70
45
19
26

High Clouds (% Sky Obscured)

40
24
40
57
69
48
27
6
7
7
7
7
8
9
38
67
93
85
74
61
43
23
2
1

ISS Passover

Visibility (miles)

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

Precipitation Probability (%)

42
14
14
10
0
4
5
0
2
2
1
15
22
29
45
54
61
52
45
35
23
10
0
1

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

6
5
5
5
4
4
4
4
4
4
5
5
6
7
8
9
11
12
11
9
8
6
4
2

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

87
89
90
91
91
93
93
93
93
90
89
86
83
80
78
77
74
74
74
74
77
77
79
81

Pressure (mb)

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

Ozone (du)

366
366
365
366
366
367
367
367
367
365
364
362
362
362
363
361
360
359
360
361
362
362
362
362

Thursday 21

Waxing Crescent 42%

10:59

01:40

21 OK
22 OK
23 OK
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: 05:05, Set: 20:51, Transit: 12:58. Moon - Rise: 10:59, Set: 01:40. Civil Dark: 21:31 - 04:24. Nautical Dark: 22:27 - 03:28. Astro Dark: 23:51 - 02:01

Total Clouds (% Sky Obscured)

41
38
34
39
41
52
65
75
88
93
98
98
99
100
85
67
50
57
63
70
62
68
60

Low Clouds (% Sky Obscured)

5
7
5
3
1
3
7
14
38
61
83
87
90
92
77
64
50
57
63
70
62
53
44

Medium Clouds (% Sky Obscured)

24
22
21
24
23
35
44
53
64
74
84
81
79
73
66
59
50
50
49
51
48
44
41

High Clouds (% Sky Obscured)

1
0
1
2
4
22
40
24
13
8
0
32
64
96
69
43
15
10
5
0
0
0
0

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
7
5
4
5
6
7
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

Precipitation Type

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

Precipitation Probability (%)

1
0
0
0
0
4
4
2
21
30
38
50
56
67
70
69
65
58
54
46
39
35
36

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

83
86
87
89
89
90
91
90
91
92
90
90
89
89
86
77
67
59
60
61
61
68
74

Pressure (mb)

1024
1024
1024
1024
1024
1024
1024
1024
1024
1024
1024
1024
1024
1024
1024
1024
1023
1023
1023
1023
1023
1023
1023

Ozone (du)

359
356
354
353
352
352
351
350
349
350
352
353
357
361
366
370
374
379
382
385
388
386
384

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

Generated: 15/05/26 21:55:15. Forecast: 15/05/26 to 21/05/26. Timezone: UTC+2.00