Clear Outside v1.0 - International Weather Forecasts For Astronomers

Saturday 17

Waning Crescent 0%

08:08

15:52

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

Sun - Rise: 07:51, Set: 16:33, Transit: 12:12. Moon - Rise: 08:08, Set: 15:52. Civil Dark: 17:09 - 07:15. Nautical Dark: 17:49 - 06:35. Astro Dark: 18:28 - 05:56

Total Clouds (% Sky Obscured)

98
87
72
62
37
28
18
44
67
82
71
20
8
17
17
0
0
0
0
0
0
0
0
0

Low Clouds (% Sky Obscured)

74
65
52
43
37
28
18
44
61
71
58
20
8
17
17
0
0
0
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

4
4
4
0
1
0
0
0
0
0
0
0
0
0
1
0
0
0
0
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

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)

6
7
8
8
9
10
11
12
13
13
14
13
13
14
15
16
16
16
16
15
14
13
13
12

Chance of Frost

Temperature (°C)

3
2
1
1
1
1
1
0
0
0
0
0
-0
0
1
3
3
4
3
2
1
0
-0
-1

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

85
84
84
86
88
86
86
86
87
84
81
83
75
70
68
65
62
63
62
62
65
66
66
63

Pressure (mb)

1028
1028
1028
1028
1028
1028
1028
1028
1028
1028
1028
1029
1029
1029
1029
1028
1028
1027
1027
1027
1027
1028
1028
1028

Ozone (du)

329
327
327
326
322
321
323
323
321
321
322
319
318
319
320
321
324
326
325
323
321
321
324
322

Sunday 18

New Moon 1%

08:34

17:09

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

Sun - Rise: 07:50, Set: 16:34, Transit: 12:12. Moon - Rise: 08:34, Set: 17:09. Civil Dark: 17:10 - 07:14. Nautical Dark: 17:51 - 06:34. Astro Dark: 18:29 - 05:55

Total Clouds (% Sky Obscured)

0
0
0
0
0
0
0
6
7
7
0
0
1
1
1
2
2
3
2
0
2
1
0
0

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
6
7
7
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
3
0
0
0
0
1
1
1
2
2
3
2
0
2
1
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

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)

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

Chance of Frost

Temperature (°C)

-1
-1
-1
-1
-2
-2
-2
-2
-2
-2
-2
-2
-2
-1
1
2
3
3
2
1
0
-1
-1
-2

Feels Like (°C)

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

Dew Point (°C)

-7
-7
-7
-7
-7
-8
-8
-8
-8
-8
-8
-8
-9
-9
-9
-8
-8
-7
-7
-7
-7
-7
-7
-8

Relative Humidity (%)

62
64
64
64
64
63
63
64
64
64
64
63
59
54
49
47
46
48
52
56
60
63
63
64

Pressure (mb)

1028
1028
1028
1028
1028
1028
1028
1028
1028
1028
1028
1029
1029
1029
1029
1028
1028
1028
1028
1028
1028
1029
1029
1029

Ozone (du)

326
329
335
340
343
347
350
353
356
358
358
358
359
359
358
356
357
358
359
362
363
364
366
366

Monday 19

Waxing Crescent 3%

08:54

18:26

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

Sun - Rise: 07:49, Set: 16:36, Transit: 12:13. Moon - Rise: 08:54, Set: 18:26. Civil Dark: 17:12 - 07:13. Nautical Dark: 17:52 - 06:33. Astro Dark: 18:30 - 05:55

Total Clouds (% Sky Obscured)

1
0
1
0
0
0
10
13
15
12
15
6
0
12
1
0
0
0
0
0
0
0
0
1

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
10
13
15
12
15
6
0
12
0
0
0
0
0
0
0
0
0
1

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

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

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)

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

Chance of Frost

Temperature (°C)

-2
-2
-3
-3
-3
-3
-3
-3
-4
-4
-4
-4
-3
-2
-1
0
1
2
1
0
-1
-2
-2
-3

Feels Like (°C)

-6
-6
-7
-7
-7
-7
-7
-7
-8
-8
-8
-8
-7
-7
-6
-4
-3
-3
-3
-4
-5
-5
-6
-6

Dew Point (°C)

-8
-8
-8
-8
-8
-9
-9
-9
-9
-9
-10
-10
-10
-10
-10
-9
-8
-8
-7
-7
-7
-7
-7
-7

Relative Humidity (%)

64
64
65
65
67
65
65
65
65
64
64
64
61
57
52
49
50
51
54
59
64
68
71
73

Pressure (mb)

1029
1029
1030
1029
1029
1029
1029
1028
1028
1028
1028
1028
1028
1028
1027
1026
1025
1025
1024
1024
1024
1024
1024
1023

Ozone (du)

366
366
365
360
354
352
350
349
346
344
345
347
347
347
348
349
349
348
348
349
348
348
350
352

Tuesday 20

Waxing Crescent 8%

09:10

19:44

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

Sun - Rise: 07:48, Set: 16:37, Transit: 12:13. Moon - Rise: 09:10, Set: 19:44. Civil Dark: 17:13 - 07:12. Nautical Dark: 17:53 - 06:32. Astro Dark: 18:32 - 05:54

Total Clouds (% Sky Obscured)

2
0
0
0
4
10
15
15
15
15
18
20
24
20
18
14
16
17
17
12
8
3
2
1

Low Clouds (% Sky Obscured)

1
0
0
0
4
10
15
15
15
15
18
20
24
20
18
14
16
15
15
12
7
3
2
1

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
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

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)

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

Chance of Frost

Temperature (°C)

-3
-4
-4
-4
-4
-4
-4
-4
-4
-4
-4
-4
-4
-3
-2
0
1
2
1
1
-1
-2
-2
-3

Feels Like (°C)

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

Dew Point (°C)

-8
-8
-8
-9
-8
-9
-9
-9
-9
-9
-9
-9
-9
-10
-10
-9
-9
-9
-8
-8
-8
-8
-8
-9

Relative Humidity (%)

72
72
70
69
70
70
70
70
69
69
70
69
66
59
54
49
46
47
51
54
60
61
63
63

Pressure (mb)

1023
1023
1022
1022
1021
1021
1020
1019
1019
1018
1018
1017
1017
1017
1016
1015
1014
1013
1012
1012
1012
1012
1012
1012

Ozone (du)

352
352
354
355
356
357
356
356
356
357
356
354
354
354
354
352
351
350
349
348
351
353
354
356

Wednesday 21

Waxing Crescent 14%

09:24

21:01

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

Sun - Rise: 07:47, Set: 16:39, Transit: 12:13. Moon - Rise: 09:24, Set: 21:01. Civil Dark: 17:15 - 07:11. Nautical Dark: 17:55 - 06:31. Astro Dark: 18:33 - 05:53

Total Clouds (% Sky Obscured)

0
2
4
5
22
36
48
49
45
48
45
44
45
44
43
42
41
36
36
31
30
29
44
57

Low Clouds (% Sky Obscured)

0
1
3
5
21
35
48
49
45
48
45
44
45
44
43
42
41
36
32
26
26
25
37
48

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
4
8

High Clouds (% Sky Obscured)

0
0
0
0
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
0
0
0
10
22

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

Chance of Frost

Temperature (°C)

-3
-4
-4
-5
-5
-5
-5
-5
-5
-5
-5
-5
-5
-4
-3
-2
-1
-1
-1
-1
-1
-2
-2
-2

Feels Like (°C)

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

Dew Point (°C)

-9
-10
-10
-10
-11
-11
-10
-10
-10
-10
-10
-10
-10
-10
-10
-10
-10
-9
-9
-8
-9
-9
-8
-8

Relative Humidity (%)

64
65
65
66
65
66
67
67
69
69
69
70
66
61
57
53
50
52
54
56
57
58
61
61

Pressure (mb)

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

Ozone (du)

357
357
357
358
358
359
359
360
359
360
361
362
362
364
364
364
364
364
364
363
364
365
365
367

Thursday 22

Waxing Crescent 23%

09:37

21:01

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: 07:46, Set: 16:41, Transit: 12:13. Moon - Rise: 09:37, Set: 21:01. Civil Dark: 17:16 - 07:10. Nautical Dark: 17:56 - 06:31. Astro Dark: 18:34 - 05:52

Total Clouds (% Sky Obscured)

66
73
82
89
92
94
96
98
99
99
100
100
100
99
99
98
96
95
93
83
71
61
69
84

Low Clouds (% Sky Obscured)

56
63
71
79
84
88
92
93
95
97
97
98
100
99
98
98
96
95
93
83
71
60
68
72

Medium Clouds (% Sky Obscured)

11
26
41
59
56
54
52
51
50
49
46
40
35
27
16
6
5
4
3
3
4
4
26
49

High Clouds (% Sky Obscured)

37
26
13
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
3
2
2

ISS Passover

Visibility (miles)

9
9
6
4
1
0
0
0
0
0
0
3
6
8
8
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
2
4
14
21
24
27
27
24
21
17
11
10
7
3
2
1
0
0
1
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)

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

Chance of Frost

Temperature (°C)

-2
-2
-2
-2
-2
-2
-2
-2
-2
-2
-2
-2
-2
-2
-2
-2
-1
-1
-1
-2
-2
-3
-3
-3

Feels Like (°C)

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

Dew Point (°C)

-8
-8
-7
-6
-4
-4
-3
-2
-3
-2
-3
-3
-3
-4
-3
-3
-3
-3
-3
-3
-3
-4
-4
-4

Relative Humidity (%)

61
62
67
72
81
86
92
98
96
98
96
94
92
91
91
87
87
87
89
89
91
92
94
94

Pressure (mb)

1009
1009
1009
1009
1009
1009
1009
1009
1009
1009
1009
1009
1009
1009
1009
1009
1009
1009
1009
1009
1009
1009
1010
1010

Ozone (du)

368
370
371
371
371
370
369
369
371
374
376
379
381
384
382
380
378
376
374
372
373
374
375
373

Friday 23

Waxing Crescent 33%

09:50

22:19

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

Sun - Rise: 07:45, Set: 16:42, Transit: 12:14. Moon - Rise: 09:50, Set: 22:19. Civil Dark: 17:18 - 07:09. Nautical Dark: 17:58 - 06:30. Astro Dark: 18:36 - 05:51

Total Clouds (% Sky Obscured)

96
88
82
77
81
88
94
95
94
94
95
97
98
96
96
95
95
95
95
91
82
80

Low Clouds (% Sky Obscured)

77
78
78
75
77
72
72
76
83
90
90
91
91
84
77
70
73
74
72
72
75
76

Medium Clouds (% Sky Obscured)

71
60
45
34
42
48
44
42
45
43
41
38
45
43
42
40
40
37
30
22
14
5

High Clouds (% Sky Obscured)

0
1
1
1
1
0
0
1
2
0
0
0
0
0
0
8
8
13
13
10
1
0

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
7
5
3
5
7
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

Precipitation Type

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
1
3
3
12
15
17
20
16
2
3
4
1
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
0
0

Wind Speed/Direction (mph)

6
6
6
6
6
6
6
7
7
7
7
8
8
8
9
9
8
8
8
8
8
8

Chance of Frost

Temperature (°C)

-3
-3
-3
-3
-3
-3
-3
-3
-3
-3
-3
-3
-2
-2
-2
-1
-0
-1
-1
-1
-1
-2

Feels Like (°C)

-6
-6
-6
-6
-6
-6
-6
-6
-6
-6
-7
-6
-6
-6
-6
-6
-6
-4
-4
-4
-4
-5

Dew Point (°C)

-4
-4
-4
-4
-4
-4
-4
-4
-4
-4
-4
-4
-4
-4
-4
-5
-5
-5
-5
-4
-5
-5

Relative Humidity (%)

96
94
94
94
96
94
94
94
94
94
92
91
87
86
81
77
71
74
74
77
77
78

Pressure (mb)

1010
1011
1011
1011
1011
1011
1011
1011
1011
1011
1011
1011
1011
1012
1011
1011
1011
1011
1011
1011
1011
1012

Ozone (du)

371
369
368
368
368
367
366
365
366
367
368
368
367
367
369
371
373
377
381
385
390
395

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

Generated: 17/01/26 21:52:09. Forecast: 17/01/26 to 23/01/26. Timezone: UTC+1.00