Clear Outside v1.0 - International Weather Forecasts For Astronomers

Sunday 8

Waning Gibbous 63%

00:04

09:27

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
21 Bad
22 Bad
23 Bad

Sun - Rise: 07:23, Set: 17:08, Transit: 12:16. Moon - Rise: 00:04, Set: 09:27. Civil Dark: 17:42 - 06:49. Nautical Dark: 18:20 - 06:11. Astro Dark: 18:58 - 05:33

Total Clouds (% Sky Obscured)

100
100
99
99
99
98
98
100
100
99
98
97
98
97
95
98
97
98
100
100
100
100
99
99

Low Clouds (% Sky Obscured)

93
91
90
94
93
93
91
90
90
80
82
85
93
90
86
86
87
93
100
100
100
100
95
95

Medium Clouds (% Sky Obscured)

91
85
81
75
83
81
85
85
94
89
92
89
72
55
51
42
40
40
76
75
47
51
51
53

High Clouds (% Sky Obscured)

65
70
80
51
69
41
43
48
41
35
35
46
55
59
61
69
43
41
58
59
38
41
36
35

ISS Passover

Visibility (miles)

9
8
7
4
4
4
5
5
2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Fog (%)

85
75
65
13
13
12
9
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
Very Light Rain
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

24
22
37
31
32
47
49
44
31
27
19
22
18
2
3
14
15
18
7
10
12
12
9
3

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

2
2
2
2
2
2
2
2
2
2
3
4
4
4
4
4
4
3
3
2
2
2
2
2

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

96
98
98
98
98
98
98
98
98
98
100
100
100
100
100
98
98
100
98
98
100
100
98
100

Pressure (mb)

1008
1009
1009
1009
1009
1009
1009
1009
1010
1010
1010
1011
1011
1011
1010
1011
1011
1011
1011
1012
1012
1012
1012
1012

Ozone (du)

419
419
420
422
423
425
428
428
427
425
422
423
422
421
419
420
418
417
418
420
418
419
418
417

Monday 9

Third Quarter 53%

01:16

09:46

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
21 Bad
22 Bad
23 Bad

Sun - Rise: 07:22, Set: 17:10, Transit: 12:16. Moon - Rise: 01:16, Set: 09:46. Civil Dark: 17:43 - 06:48. Nautical Dark: 18:22 - 06:10. Astro Dark: 18:59 - 05:32

Total Clouds (% Sky Obscured)

99
98
100
100
100
100
100
100
99
99
99
98
98
99
99
93
98
100
98
99
98
98
100
100

Low Clouds (% Sky Obscured)

95
95
95
95
97
97
97
100
97
96
94
93
94
92
97
92
98
99
96
98
96
97
100
100

Medium Clouds (% Sky Obscured)

58
47
63
69
57
53
50
52
40
38
35
41
43
43
20
2
15
16
15
10
1
0
0
0

High Clouds (% Sky Obscured)

23
41
72
68
51
49
59
61
51
36
28
26
17
19
19
23
7
4
5
4
4
4
4
0

ISS Passover

Visibility (miles)

0
0
0
0
3
4
4
3
0
0
0
0
1
7
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 (%)

7
6
8
7
8
10
11
7
6
4
4
1
0
0
0
0
0
0
0
0
0
1
1
7

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

2
2
2
1
1
1
1
1
1
1
1
2
2
2
1
1
1
1
1
1
1
1
1
1

Relative Humidity (%)

100
98
100
98
98
96
96
96
96
98
98
98
96
88
79
79
82
86
89
89
89
89
89
91

Pressure (mb)

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

Ozone (du)

417
416
411
409
407
406
404
405
409
417
419
417
413
411
414
415
417
423
428
434
439
442
446
449

Tuesday 10

Waning Crescent 44%

02:28

10:10

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 OK
19 OK
20 OK
21 OK
22 OK
23 Bad

Sun - Rise: 07:20, Set: 17:11, Transit: 12:16. Moon - Rise: 02:28, Set: 10:10. Civil Dark: 17:45 - 06:46. Nautical Dark: 18:23 - 06:08. Astro Dark: 19:01 - 05:30

Total Clouds (% Sky Obscured)

100
100
99
95
97
93
95
98
94
87
86
88
98
71
58
56
56
70
45
44
41
33
40
46

Low Clouds (% Sky Obscured)

100
100
98
92
95
89
93
97
87
79
84
84
96
67
58
53
52
50
45
44
41
33
40
46

Medium Clouds (% Sky Obscured)

0
0
0
0
0
2
2
0
0
18
3
3
3
3
3
3
3
1
0
0
0
0
19
32

High Clouds (% Sky Obscured)

0
4
21
7
47
62
58
46
42
21
15
17
36
28
18
5
5
31
4
2
0
0
11
26

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
1
73
91
88
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 (%)

9
9
8
3
1
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

91
91
91
93
93
93
93
93
93
89
83
76
71
61
55
55
63
73
80
82
83
86
86
88

Pressure (mb)

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

Ozone (du)

447
441
433
437
434
425
419
411
406
404
404
403
402
408
410
402
402
396
383
380
378
380
394
399

Wednesday 11

Waning Crescent 34%

03:36

10:43

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
21 Bad
22 Bad
23 Bad

Sun - Rise: 07:18, Set: 17:13, Transit: 12:16. Moon - Rise: 03:36, Set: 10:43. Civil Dark: 17:47 - 06:45. Nautical Dark: 18:25 - 06:06. Astro Dark: 19:02 - 05:29

Total Clouds (% Sky Obscured)

61
82
81
84
100
100
100
100
100
100
99
98
98
98
99
100
100
100
100
100
100
100
85
67

Low Clouds (% Sky Obscured)

54
58
57
58
58
87
86
94
95
96
95
94
92
93
94
95
92
90
89
88
87
68
68
55

Medium Clouds (% Sky Obscured)

57
53
46
41
50
91
100
100
100
99
97
95
91
94
97
100
100
92
84
87
97
100
73
44

High Clouds (% Sky Obscured)

42
62
78
84
93
89
86
85
83
81
67
55
38
53
64
79
80
76
73
61
38
8
4
2

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
4
9
6
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
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Very Light Rain
None
None
None
None

Precipitation Probability (%)

0
0
0
0
2
3
4
25
38
48
49
68
75
78
71
74
71
67
67
54
43
37
27
21

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0.4
0.4
0.5
0.4
0.5
0.4
0.4
0.4
0.2
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

89
91
93
94
94
94
94
93
91
86
83
80
79
88
93
91
90
88
90
90
88
86
83
85

Pressure (mb)

1001
1000
1000
999
998
998
997
997
997
997
996
995
994
994
993
993
992
992
992
992
991
991
991
991

Ozone (du)

394
382
373
372
372
365
354
354
351
348
348
348
344
345
343
347
355
363
366
368
386
390
389
390

Thursday 12

Waning Crescent 25%

04:38

11:28

00 OK
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
21 Bad
22 Bad
23 Bad

Sun - Rise: 07:16, Set: 17:15, Transit: 12:16. Moon - Rise: 04:38, Set: 11:28. Civil Dark: 17:48 - 06:43. Nautical Dark: 18:26 - 06:05. Astro Dark: 19:04 - 05:27

Total Clouds (% Sky Obscured)

32
47
62
84
98
100
100
100
99
99
99
100
100
97
94
91
93
94
95
93
89
86
90
92

Low Clouds (% Sky Obscured)

23
22
19
16
16
23
21
64
72
80
88
73
92
87
84
80
75
69
62
63
65
66
66
66

Medium Clouds (% Sky Obscured)

13
23
34
43
53
56
86
99
93
98
90
56
74
60
38
14
24
32
38
33
29
30
25
18

High Clouds (% Sky Obscured)

0
29
59
84
98
100
100
82
62
50
53
57
22
31
43
49
38
32
27
27
27
23
40
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
Very Light Rain
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

10
9
6
2
3
3
1
16
22
26
19
24
35
46
35
21
14
13
15
13
11
10
9
10

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

7
6
6
5
5
4
3
3
3
3
4
5
7
6
7
10
14
13
12
11
10
10
9
9

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

3
3
3
3
2
2
1
1
2
2
2
2
2
3
3
3
3
3
3
3
3
3
3
3

Relative Humidity (%)

86
89
89
89
89
88
88
89
89
86
83
78
74
81
81
79
79
79
81
81
81
81
81
82

Pressure (mb)

990
989
989
989
988
988
987
987
987
987
986
986
986
986
986
986
987
987
988
988
988
988
989
988

Ozone (du)

389
377
371
366
365
366
363
365
365
370
380
390
396
402
408
415
421
426
431
435
436
437
438
439

Friday 13

Waning Crescent 17%

05:28

12:26

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
21 Bad
22 Bad
23 Bad

Sun - Rise: 07:15, Set: 17:16, Transit: 12:16. Moon - Rise: 05:28, Set: 12:26. Civil Dark: 17:50 - 06:41. Nautical Dark: 18:28 - 06:03. Astro Dark: 19:05 - 05:26

Total Clouds (% Sky Obscured)

96
94
94
94
95
96
96
96
96
96
96
98
100
98
95
94
96
98
99
98
97
96
96
96

Low Clouds (% Sky Obscured)

64
54
43
34
47
59
73
79
84
87
91
95
100
97
95
92
90
87
84
75
67
60
67
74

Medium Clouds (% Sky Obscured)

9
10
11
15
18
28
34
33
32
28
24
24
21
24
27
31
40
49
58
72
81
90
83
75

High Clouds (% Sky Obscured)

85
63
42
16
8
6
3
3
2
2
1
1
1
1
2
4
3
3
5
8
14
22
25
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 (%)

10
8
5
4
9
14
19
26
30
31
30
29
26
21
18
15
12
12
10
9
9
8
11
10

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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

82
82
83
85
86
85
83
80
81
78
78
79
81
82
82
84
84
85
85
86
86
88
86
88

Pressure (mb)

988
988
988
988
988
988
987
987
987
987
988
988
988
988
988
989
990
990
991
991
992
992
993
993

Ozone (du)

439
439
438
436
435
438
440
443
446
448
451
453
455
458
459
459
460
461
462
463
462
460
459
456

Saturday 14

Waning Crescent 10%

06:08

13:34

Sun - Rise: 07:13, Set: 17:18, Transit: 12:16. Moon - Rise: 06:08, Set: 13:34. Civil Dark: 17:52 - 06:39. Nautical Dark: 18:30 - 06:02. Astro Dark: 19:07 - 05:24

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: 08/02/26 00:06:59. Forecast: 08/02/26 to 14/02/26. Timezone: UTC+1.00