Clear Outside v1.0 - International Weather Forecasts For Astronomers

Friday 20

Waxing Crescent 19%

08:13

21:26

17 OK
18 Good
19 Good
20 Bad
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

Sun - Rise: 07:00, Set: 17:28, Transit: 12:15. Moon - Rise: 08:13, Set: 21:26. Civil Dark: 18:01 - 06:27. Nautical Dark: 18:39 - 05:49. Astro Dark: 19:17 - 05:12

Total Clouds (% Sky Obscured)

35
18
14
100
99
100
100
100
100
100
100
100
99
100
100
98
100
100
100
100
89
94
95
97

Low Clouds (% Sky Obscured)

0
0
0
0
35
63
50
51
82
77
49
79
85
87
84
84
90
83
76
81
75
69
79
79

Medium Clouds (% Sky Obscured)

12
2
2
0
0
0
65
65
100
100
100
94
97
96
99
94
100
100
100
83
38
42
67
67

High Clouds (% Sky Obscured)

0
5
14
100
99
100
100
100
100
100
100
100
85
96
65
65
100
92
75
65
0
3
3
56

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
3
0
0
0
1
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
Snow
Snow
Snow
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

0
0
0
0
0
0
0
0
0
0
3
24
46
52
64
55
52
55
47
30
15
14
9
27

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

3
3
2
3
4
4
5
5
5
5
6
6
8
9
9
10
12
13
13
13
12
13
11
9

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

-8
-9
-9
-9
-10
-9
-8
-6
-4
-3
-3
-2
-1
0
1
2
2
3
3
3
3
3
3
3

Relative Humidity (%)

56
59
59
59
59
59
64
74
78
81
81
86
91
96
96
98
96
96
94
93
88
74
76
79

Pressure (mb)

1025
1026
1026
1026
1026
1025
1024
1024
1023
1023
1022
1021
1021
1020
1019
1020
1019
1019
1019
1019
1019
1019
1020
1020

Ozone (du)

311
314
318
322
326
328
328
330
328
328
336
344
345
346
352
361
362
359
359
362
361
356
353
355

Saturday 21

Waxing Crescent 29%

08:30

22:49

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
06 Bad
07 Bad
08 Bad
09 Bad
10 Bad
11 Bad
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad

Sun - Rise: 06:58, Set: 17:30, Transit: 12:15. Moon - Rise: 08:30, Set: 22:49. Civil Dark: 18:03 - 06:25. Nautical Dark: 18:41 - 05:47. Astro Dark: 19:18 - 05:10

Total Clouds (% Sky Obscured)

66
87
79
81
82
87
86
96
97
99
99
99
99
100
97
100
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

51
68
59
58
65
71
69
62
45
51
59
69
68
56
49
79
72
76
90
81
81
78
71
89

Medium Clouds (% Sky Obscured)

0
32
12
9
9
6
24
26
53
61
91
96
86
98
88
92
97
94
99
100
92
95
99
100

High Clouds (% Sky Obscured)

0
0
0
0
4
18
7
23
7
40
40
37
72
73
76
100
100
100
94
100
100
100
100
100

ISS Passover

Visibility (miles)

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

Precipitation Probability (%)

6
3
1
2
1
1
4
8
10
31
37
12
14
6
2
51
60
48
42
32
54
36
40
59

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

81
83
83
80
80
83
83
85
88
91
89
89
86
83
86
86
87
85
81
79
77
78
80
82

Pressure (mb)

1021
1022
1022
1023
1023
1023
1023
1023
1023
1023
1023
1023
1022
1022
1021
1021
1021
1020
1020
1019
1018
1018
1017
1017

Ozone (du)

358
356
351
345
339
334
329
327
323
318
316
314
314
313
310
310
312
314
317
321
325
328
327
325

Sunday 22

Waxing Crescent 27%

08:53

00:16

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
06 Bad
07 Bad
08 Bad
09 Bad
10 Bad
11 Bad
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad

Sun - Rise: 06:56, Set: 17:32, Transit: 12:15. Moon - Rise: 08:53, Set: 00:16. Civil Dark: 18:05 - 06:23. Nautical Dark: 18:42 - 05:45. Astro Dark: 19:20 - 05:08

Total Clouds (% Sky Obscured)

100
100
100
100
100
95
99
100
100
80
100
100
72
66
73
75
100
100
97
88
87
85
89
93

Low Clouds (% Sky Obscured)

90
83
70
38
64
79
49
67
45
41
36
46
50
36
34
20
47
73
75
35
66
30
45
60

Medium Clouds (% Sky Obscured)

100
100
100
99
78
53
33
67
60
55
50
39
30
35
45
29
100
100
59
40
69
26
52
63

High Clouds (% Sky Obscured)

100
100
100
96
99
90
99
100
100
68
100
99
51
42
52
55
85
90
64
65
55
47
50
57

ISS Passover

Visibility (miles)

8
7
9
7
9
8
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
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

Light Rain
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
Very Light Rain

Precipitation Probability (%)

91
82
67
61
38
31
17
14
2
9
5
13
17
7
9
16
12
38
32
33
44
48
49
54

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

16
15
15
15
15
15
13
13
13
12
10
8
8
8
8
8
10
12
12
12
14
14
14
14

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

82
85
84
82
82
82
78
77
77
78
81
85
88
90
90
88
75
72
80
81
64
66
65
65

Pressure (mb)

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

Ozone (du)

326
329
333
335
335
339
340
349
358
351
340
336
335
337
340
340
341
345
353
355
354
355
361
364

Monday 23

Waxing Crescent 41%

09:24

01:42

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
06 Bad
07 Bad
08 Bad
09 Bad
10 Bad
11 Bad
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad

Sun - Rise: 06:54, Set: 17:34, Transit: 12:15. Moon - Rise: 09:24, Set: 01:42. Civil Dark: 18:06 - 06:21. Nautical Dark: 18:44 - 05:44. Astro Dark: 19:21 - 05:06

Total Clouds (% Sky Obscured)

96
100
100
100
100
100
100
100
100
100
100
100
100
100
99
98
97
97
96
96
97
99
100
98

Low Clouds (% Sky Obscured)

60
59
50
44
38
59
79
100
88
76
67
65
67
65
64
67
68
72
78
84
91
95
100
96

Medium Clouds (% Sky Obscured)

67
60
73
59
100
100
100
100
98
96
93
94
95
96
95
94
93
91
88
86
87
87
88
87

High Clouds (% Sky Obscured)

73
100
100
100
100
74
57
45
67
83
94
100
100
100
79
55
22
34
40
65
45
39
29
26

ISS Passover

Visibility (miles)

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

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

Precipitation Probability (%)

40
61
44
41
35
45
58
71
79
88
89
79
73
59
47
45
49
49
45
35
40
48
49
51

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

14
15
12
13
12
13
16
15
15
15
14
12
10
9
8
9
10
10
10
10
9
8
7
5

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

6
5
6
5
5
6
6
6
6
6
6
5
5
6
6
6
5
5
5
6
6
6
7
7

Relative Humidity (%)

72
72
81
75
80
81
80
81
81
82
87
82
87
88
90
88
82
80
80
80
78
77
85
90

Pressure (mb)

1014
1014
1015
1014
1014
1014
1014
1013
1014
1014
1014
1015
1015
1016
1016
1017
1017
1018
1018
1018
1018
1018
1019
1019

Ozone (du)

364
363
363
361
358
359
363
365
361
357
359
358
357
358
358
359
361
362
359
355
352
349
346
344

Tuesday 24

First Quarter 52%

10:09

03:04

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

Sun - Rise: 06:52, Set: 17:35, Transit: 12:14. Moon - Rise: 10:09, Set: 03:04. Civil Dark: 18:08 - 06:19. Nautical Dark: 18:46 - 05:42. Astro Dark: 19:23 - 05:04

Total Clouds (% Sky Obscured)

97
96
95
95
96
93
92
57
48
44
38
41
50
56
33
25
14
20
26
30
25
20
15
13

Low Clouds (% Sky Obscured)

92
87
88
90
91
90
89
54
43
40
37
38
42
46
15
8
1
3
5
7
7
6
5
3

Medium Clouds (% Sky Obscured)

85
83
76
62
49
27
18
2
2
2
3
2
2
2
3
3
4
3
2
2
1
1
1
1

High Clouds (% Sky Obscured)

29
23
17
13
4
5
6
7
7
7
6
5
6
9
13
13
13
20
26
30
25
20
10
8

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 (%)

37
30
35
25
8
5
1
0
0
0
0
1
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)

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

Chance of Frost

Temperature (°C)

9
8
8
8
8
8
7
7
7
6
6
6
5
5
5
6
7
9
10
12
13
14
14
15

Feels Like (°C)

6
6
6
6
6
6
6
5
7
6
6
6
6
5
5
5
6
6
7
7
8
14
14
14

Dew Point (°C)

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

Relative Humidity (%)

91
91
90
90
90
90
88
90
91
91
93
93
91
93
93
88
84
80
74
70
63
62
60
58

Pressure (mb)

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

Ozone (du)

346
345
342
341
342
341
339
341
343
343
343
343
343
340
340
342
345
347
348
350
351
351
352
352

Wednesday 25

Waxing Gibbous 64%

11:11

04:12

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

Sun - Rise: 06:50, Set: 17:37, Transit: 12:14. Moon - Rise: 11:11, Set: 04:12. Civil Dark: 18:10 - 06:17. Nautical Dark: 18:47 - 05:40. Astro Dark: 19:25 - 05:02

Total Clouds (% Sky Obscured)

11
9
9
10
10
17
24
32
30
24
20
21
20
21
16
12
6
14
26
40
56
72
81
73

Low Clouds (% Sky Obscured)

1
0
0
0
0
7
13
18
18
18
17
19
20
21
16
12
0
0
0
0
12
23
31
30

Medium Clouds (% Sky Obscured)

2
2
2
3
4
4
4
4
4
3
3
3
2
2
1
1
0
14
26
40
56
72
81
60

High Clouds (% Sky Obscured)

5
3
1
1
1
8
14
19
12
7
1
0
0
0
3
7
6
7
3
0
32
61
81
59

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
4
10
8
20

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

Chance of Frost

Temperature (°C)

13
12
10
9
9
8
8
7
7
6
6
6
5
5
5
6
7
9
11
12
14
14
14
15

Feels Like (°C)

14
14
14
10
9
9
9
8
8
7
6
7
6
6
6
5
6
6
7
8
9
14
14
13

Dew Point (°C)

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

Relative Humidity (%)

64
71
77
80
81
84
85
84
85
87
86
88
90
90
91
85
79
74
68
64
59
58
56
56

Pressure (mb)

1021
1021
1022
1022
1022
1023
1023
1023
1023
1023
1023
1023
1024
1024
1024
1024
1024
1024
1023
1023
1022
1021
1021
1021

Ozone (du)

352
351
351
352
353
354
356
358
360
360
360
360
360
359
359
359
359
359
360
361
362
362
362
362

Thursday 26

Waxing Gibbous 75%

12:28

05:04

17 Bad
18 Bad
19 Bad
20 OK
21 OK
22 OK
23 OK
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

Sun - Rise: 06:48, Set: 17:39, Transit: 12:14. Moon - Rise: 12:28, Set: 05:04. Civil Dark: 18:11 - 06:15. Nautical Dark: 18:49 - 05:38. Astro Dark: 19:26 - 05:00

Total Clouds (% Sky Obscured)

69
69
54
41
30
35
42
46
62
77
94
92
90
87
92
96
98
98
99
100

Low Clouds (% Sky Obscured)

27
27
16
8
0
1
1
2
1
1
0
7
14
22
27
32
37
33
26
16

Medium Clouds (% Sky Obscured)

30
0
0
0
0
3
6
9
16
30
43
65
78
82
75
70
65
66
69
71

High Clouds (% Sky Obscured)

40
21
12
8
6
10
13
17
45
72
94
92
90
87
86
72
57
72
86
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

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 (%)

18
10
2
0
0
0
0
0
0
0
0
0
0
0
1
3
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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

14
14
14
9
9
9
9
9
8
7
7
7
7
7
7
7
7
7
7
8

Dew Point (°C)

6
6
6
7
7
7
7
7
7
7
7
7
7
7
7
7
8
8
8
8

Relative Humidity (%)

61
66
72
77
80
85
87
87
87
87
87
87
87
88
90
84
80
76
72
68

Pressure (mb)

1021
1021
1021
1021
1021
1021
1021
1020
1020
1020
1020
1019
1019
1019
1019
1019
1019
1019
1018
1018

Ozone (du)

364
365
367
372
377
381
385
389
393
391
389
387
383
380
376
371
366
361
356
351

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

Generated: 20/02/26 17:05:33. Forecast: 20/02/26 to 26/02/26. Timezone: UTC+1.00