Clear Outside v1.0 - International Weather Forecasts For Astronomers

Saturday 29

Waxing Gibbous 66%

13:10

01:25

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
02 Bad
03 Bad
04 OK
05 OK
06 OK

Sun - Rise: 07:37, Set: 16:03, Transit: 11:50. Moon - Rise: 13:10, Set: 01:25. Civil Dark: 16:40 - 07:00. Nautical Dark: 17:21 - 06:20. Astro Dark: 18:00 - 05:41

Total Clouds (% Sky Obscured)

95
96
97
100
100
100
100
100
95
95
97
96
97
87
65
54
94
96
100
49
44
36
37
36

Low Clouds (% Sky Obscured)

92
96
97
97
100
100
96
85
85
72
88
85
80
79
65
54
58
52
69
49
44
36
37
36

Medium Clouds (% Sky Obscured)

95
96
96
92
84
99
100
73
44
42
34
37
40
33
17
0
0
0
1
3
18
2
1
0

High Clouds (% Sky Obscured)

95
96
97
100
100
100
100
96
58
7
4
8
6
6
3
9
73
86
100
41
8
4
4
3

ISS Passover

Visibility (miles)

6
8
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
70
78
87
91

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 (%)

3
4
5
35
31
27
15
19
15
14
9
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

94
94
94
94
93
93
93
93
93
93
93
93
94
94
94
93
93
94
94
96
94
94
94
94

Pressure (mb)

1016
1017
1017
1017
1017
1016
1016
1016
1016
1016
1016
1016
1016
1016
1016
1016
1016
1016
1016
1016
1015
1015
1016
1016

Ozone (du)

273
271
271
273
273
272
272
274
275
274
275
277
277
277
278
278
278
277
278
278
280
280
281
282

Sunday 30

Waxing Gibbous 76%

13:24

02:48

07 OK
08 OK
09 OK
10 OK
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
02 Bad
03 Bad
04 Bad
05 Bad
06 Bad

Sun - Rise: 07:38, Set: 16:02, Transit: 11:50. Moon - Rise: 13:24, Set: 02:48. Civil Dark: 16:40 - 07:01. Nautical Dark: 17:21 - 06:21. Astro Dark: 18:00 - 05:42

Total Clouds (% Sky Obscured)

38
40
34
33
81
93
94
98
99
100
100
100
100
100
100
100
100
100
99
100
100
96
92
97

Low Clouds (% Sky Obscured)

38
40
34
33
49
47
46
51
52
52
52
54
57
56
59
62
85
84
92
91
93
86
87
94

Medium Clouds (% Sky Obscured)

0
19
0
0
0
0
0
7
10
13
49
89
89
95
100
100
100
100
93
94
97
91
81
71

High Clouds (% Sky Obscured)

4
8
9
12
57
75
73
93
95
100
100
98
100
98
95
100
100
87
95
100
100
75
75
75

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
8
8
9
9
9

Fog (%)

90
88
70
70
10
6
1
0
1
2
1
0
1
0
1
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
Very Light Rain
None
None
None
None

Precipitation Probability (%)

0
0
0
0
0
0
0
1
0
0
0
0
0
4
17
32
38
39
55
59
54
42
36
14

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

94
94
93
88
85
80
83
86
89
91
91
93
93
93
93
94
94
93
94
96
96
96
96
96

Pressure (mb)

1016
1016
1016
1016
1016
1016
1016
1016
1016
1016
1017
1017
1017
1018
1018
1018
1019
1019
1019
1020
1020
1020
1021
1021

Ozone (du)

282
283
285
287
289
289
290
289
291
291
293
294
295
298
300
301
303
302
304
308
315
323
326
324

Monday 1

Waxing Gibbous 86%

13:39

04:16

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
02 Bad
03 Bad
04 Bad
05 Bad
06 Bad

Sun - Rise: 07:40, Set: 16:02, Transit: 11:51. Moon - Rise: 13:39, Set: 04:16. Civil Dark: 16:39 - 07:02. Nautical Dark: 17:20 - 06:22. Astro Dark: 17:59 - 05:43

Total Clouds (% Sky Obscured)

100
98
97
96
94
91
80
77
83
79
97
93
88
92
94
92
93
97
98
99
100
100
100
100

Low Clouds (% Sky Obscured)

100
96
91
88
86
80
74
72
82
77
82
84
86
91
94
91
92
97
98
99
99
100
100
100

Medium Clouds (% Sky Obscured)

63
49
34
28
33
14
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

75
80
66
1
0
0
0
0
0
0
19
14
1
0
0
6
0
0
15
33
50
45
30
5

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
3
2
5
7
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 (%)

22
16
12
10
8
2
0
0
0
0
0
0
0
0
0
0
0
1
1
1
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
1
0
1
2
2
2
3
4
4
4
4
4
4
4
4
4
4
4
5
3
5

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

96
96
96
93
93
94
94
94
93
91
91
93
94
96
96
96
94
89
88
83
80
76
82
86

Pressure (mb)

1022
1022
1023
1023
1023
1023
1023
1023
1023
1023
1023
1023
1023
1023
1023
1023
1023
1022
1022
1022
1022
1021
1021
1021

Ozone (du)

324
325
324
323
324
325
327
326
323
321
319
317
315
313
309
307
307
307
307
306
305
303
301
299

Tuesday 2

Waxing Gibbous 93%

13:58

05:48

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
02 Bad
03 Bad
04 Bad
05 Bad
06 Bad

Sun - Rise: 07:41, Set: 16:01, Transit: 11:51. Moon - Rise: 13:58, Set: 05:48. Civil Dark: 16:39 - 07:03. Nautical Dark: 17:20 - 06:23. Astro Dark: 17:59 - 05:44

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
92
91
93
96
100
99
99
100
100
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

100
100
99
100
100
100
100
92
88
91
96
100
99
99
100
100
100
100
100
100
100
100
100
100

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
2
4
2
1
4
1
1
0
0
4
13
13
10
10
18
31
46

High Clouds (% Sky Obscured)

16
27
37
25
10
0
2
2
0
2
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
6
4
5
3
0
0
0

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
2
5
16
9
6

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

93
96
94
91
89
86
83
80
82
86
88
86
82
83
86
85
86
91
93
94
94
98
98
96

Pressure (mb)

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

Ozone (du)

297
296
297
297
298
300
300
301
302
301
301
301
301
300
300
302
302
301
301
299
298
297
295
293

Wednesday 3

Waxing Gibbous 98%

14:24

No Set

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 OK
22 OK
23 OK
00 OK
01 OK
02 OK
03 OK
04 OK
05 OK
06 OK

Sun - Rise: 07:42, Set: 16:01, Transit: 11:51. Moon - Rise: 14:24, Set: No Set. Civil Dark: 16:38 - 07:04. Nautical Dark: 17:20 - 06:24. Astro Dark: 17:59 - 05:45

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
98
98
99
98
82
67
54
41
38
35
34
38
38
30
29
29
32

Low Clouds (% Sky Obscured)

100
100
100
100
100
100
100
98
98
99
98
82
64
47
32
29
26
24
24
24
24
25
29
32

Medium Clouds (% Sky Obscured)

53
54
49
23
12
2
8
12
15
11
6
0
0
0
0
0
0
0
3
7
8
4
2
0

High Clouds (% Sky Obscured)

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

ISS Passover

Visibility (miles)

1
3
7
6
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 (%)

16
11
6
5
5
0
0
2
1
0
1
0
12
9
2
2
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
6
6
5
5
5
5
5
4
3
4
4
4
3
3
2
2
2
2
2
2
1
2
2

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

96
98
96
94
93
89
86
83
82
82
73
75
79
80
83
85
86
86
88
89
89
89
91
91

Pressure (mb)

1018
1018
1018
1018
1018
1018
1018
1018
1018
1018
1018
1018
1019
1018
1019
1019
1019
1019
1019
1019
1019
1019
1019
1019

Ozone (du)

292
290
289
287
285
281
277
272
270
269
267
263
261
260
260
259
259
259
258
259
260
262
263
263

Thursday 4

Waxing Gibbous 100%

15:00

07:22

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
02 Bad
03 Bad
04 Bad
05 Bad
06 Bad

Sun - Rise: 07:43, Set: 16:00, Transit: 11:52. Moon - Rise: 15:00, Set: 07:22. Civil Dark: 16:38 - 07:06. Nautical Dark: 17:19 - 06:26. Astro Dark: 17:58 - 05:46

Total Clouds (% Sky Obscured)

54
74
92
94
97
100
100
100
100
100
100
100
100
100
100
100
99
99
99
99
99
100
100
100

Low Clouds (% Sky Obscured)

54
74
92
94
97
100
100
100
100
100
99
99
99
100
100
95
89
82
76
69
60
63
68
76

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
1
1
6
17
45
65
86
95
95
91
88
88
87
87
92
96
100

High Clouds (% Sky Obscured)

0
0
1
31
61
82
82
86
94
99
99
100
100
100
100
92
83
75
78
81
85
90
95
99

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
2
3
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)

2
2
2
2
3
4
6
6
6
6
6
6
6
7
8
9
9
9
9
9
9
9
9
9

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

93
91
89
88
89
88
88
89
91
89
89
91
89
86
86
85
85
83
85
85
86
86
85
83

Pressure (mb)

1019
1019
1020
1020
1019
1019
1018
1018
1018
1017
1017
1017
1017
1016
1016
1016
1015
1015
1014
1014
1014
1014
1014
1014

Ozone (du)

264
265
265
265
267
269
272
275
278
282
286
290
293
295
296
297
298
299
301
301
301
302
303
305

Friday 5

Full Moon 98%

15:53

08:48

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

Sun - Rise: 07:45, Set: 16:00, Transit: 11:52. Moon - Rise: 15:53, Set: 08:48. Civil Dark: 16:38 - 07:07. Nautical Dark: 17:19 - 06:27. Astro Dark: 17:58 - 05:47

Total Clouds (% Sky Obscured)

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

Low Clouds (% Sky Obscured)

80
84
89
90
92
93
94
97
99
99
100
100
100
100
100
94
90
88

Medium Clouds (% Sky Obscured)

90
76
61
55
50
49
52
67
75
80
71
56
41
28
17
15
15
16

High Clouds (% Sky Obscured)

95
93
89
92
97
99
99
99
100
79
56
34
23
11
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

Fog (%)

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

Precipitation Probability (%)

2
4
0
1
3
4
4
2
0
2
3
2
8
6
2
7
6
8

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

5
5
5
5
6
6
6
6
6
6
6
6
6
6
6
6
5
4

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

83
83
83
82
82
82
82
82
85
85
83
83
82
80
82
80
83
86

Pressure (mb)

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

Ozone (du)

306
306
307
307
305
304
302
300
297
294
298
301
304
309
314
319
321
322

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

Generated: 29/11/25 07:18:49. Forecast: 29/11/25 to 05/12/25. Timezone: UTC+1.00