Clear Outside v1.0 - International Weather Forecasts For Astronomers

Monday 9

New Moon 0%

07:32

15:53

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

Sun - Rise: 07:06, Set: 16:25, Transit: 11:45. Moon - Rise: 07:32, Set: 15:53. Civil Dark: 17:00 - 06:31. Nautical Dark: 17:39 - 05:52. Astro Dark: 18:17 - 05:14

Total Clouds (% Sky Obscured)

99
98
96
94
86
74
54
43
20
6
7
10
16
18
10
1
75
90
97
82
90
95
96
92

Low Clouds (% Sky Obscured)

91
84
77
81
74
74
54
43
20
5
7
10
16
18
10
1
34
40
37
61
64
77
90
89

Medium Clouds (% Sky Obscured)

17
18
22
19
7
0
2
0
0
0
0
0
0
0
0
0
48
40
50
24
31
40
29
19

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 (%)

2
0
0
0
0
1
0
0
0
1
1
1
1
1
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
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
1
9
3
21
38
44

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-1
-2
-2
-2
-2
-2
0
3
4
5
5
5
4
2
2
1
1
-1
-2
-2
-2
-2
-2
-2

Dew Point (°C)

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

Relative Humidity (%)

68
68
69
70
69
65
62
59
56
55
54
56
65
71
74
74
76
76
73
76
77
78
80
81

Pressure (mb)

1026
1026
1026
1026
1026
1026
1025
1025
1024
1023
1022
1021
1021
1021
1020
1020
1020
1019
1019
1019
1018
1017
1017
1016

Ozone (du)

296
296
296
297
296
296
294
298
303
302
301
302
300
294
289
288
292
288
276
272
269
273
272
271

Tuesday 10

Waxing Crescent 2%

08:44

16:22

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

Sun - Rise: 07:07, Set: 16:24, Transit: 11:45. Moon - Rise: 08:44, Set: 16:22. Civil Dark: 16:59 - 06:32. Nautical Dark: 17:38 - 05:53. Astro Dark: 18:16 - 05:15

Total Clouds (% Sky Obscured)

89
100
100
100
80
72
66
45
36
40
41
51
48
41
39
38
38
62
64
67
76
70
98
100

Low Clouds (% Sky Obscured)

89
100
100
100
76
65
56
45
36
40
41
51
48
41
39
38
31
33
40
35
36
37
43
55

Medium Clouds (% Sky Obscured)

40
100
90
41
46
8
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
16
89
91

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
1
2
11
14
47
49
52
62
53
85
100

ISS Passover

Visibility (miles)

9
9
5
9
8
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
1
27
41
38
23

Precipitation Type

None
Light Rain
Light Rain
Light Rain
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

19
95
95
75
36
24
8
1
1
0
0
4
0
0
0
0
0
0
0
0
0
0
0
1

Precipitation Amount (mm)

0
1.1
1.3
0.4
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
3
3
3
3
2
2
3
5
7
7
6
2
2
2
2
2
2
3
3
3
3
3
4

Chance of Frost

Temperature (°C)

1
2
2
2
2
3
4
5
7
8
8
8
7
6
5
4
4
3
2
2
2
1
1
0

Feels Like (°C)

-2
-0
0
-0
0
2
2
4
6
7
6
8
8
6
5
4
3
2
-0
-1
-1
-1
-2
-3

Dew Point (°C)

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

Relative Humidity (%)

86
91
88
89
89
88
88
85
75
69
65
66
75
81
83
83
85
85
86
88
89
89
89
91

Pressure (mb)

1015
1014
1014
1014
1014
1014
1014
1014
1013
1013
1013
1013
1013
1014
1014
1015
1015
1015
1015
1015
1015
1014
1014
1013

Ozone (du)

265
261
261
260
260
259
259
261
261
256
252
250
249
250
249
246
243
244
245
250
250
251
253
256

Wednesday 11

Waxing Crescent 5%

09:51

17:01

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
00 Bad
01 Bad
02 Bad
03 Bad

Sun - Rise: 07:09, Set: 16:22, Transit: 11:45. Moon - Rise: 09:51, Set: 17:01. Civil Dark: 16:57 - 06:34. Nautical Dark: 17:36 - 05:55. Astro Dark: 18:14 - 05:17

Total Clouds (% Sky Obscured)

100
100
99
99
100
99
100
100
100
100
100
100
100
100
100
98
95
97
92
89
94
96
97
98

Low Clouds (% Sky Obscured)

53
60
97
91
86
92
100
90
97
94
93
94
84
87
91
90
89
90
80
77
80
84
90
96

Medium Clouds (% Sky Obscured)

99
94
97
96
97
93
97
97
99
98
87
83
90
100
91
66
51
56
69
69
75
64
71
18

High Clouds (% Sky Obscured)

100
100
90
85
83
78
89
51
100
92
100
100
100
85
100
53
25
20
25
18
24
16
16
6

ISS Passover

Visibility (miles)

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

Fog (%)

31
3
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
Light Rain
Very Light Rain
Light Rain
Light Rain
Very Light Rain
Light Rain
Light Rain
Very Light Rain
None
Light Rain
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

7
33
46
77
71
95
79
77
77
74
55
37
70
37
41
13
14
12
10
7
7
4
7
5

Precipitation Amount (mm)

0
0
0
0.5
0.3
0.9
0.5
0.3
0.4
0.5
0.3
0
0.7
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

91
89
88
89
91
93
93
96
94
94
94
94
94
96
96
94
94
93
93
93
89
88
89
88

Pressure (mb)

1012
1012
1011
1011
1011
1010
1009
1008
1007
1006
1006
1005
1005
1005
1005
1005
1006
1006
1006
1005
1005
1005
1005
1005

Ozone (du)

255
256
257
257
258
258
253
252
253
252
253
260
264
267
264
263
265
264
262
259
258
254
251
251

Thursday 12

Waxing Crescent 10%

10:48

17:50

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
00 Bad
01 Bad
02 Bad
03 Bad

Sun - Rise: 07:10, Set: 16:21, Transit: 11:46. Moon - Rise: 10:48, Set: 17:50. Civil Dark: 16:57 - 06:35. Nautical Dark: 17:36 - 05:55. Astro Dark: 18:14 - 05:17

Total Clouds (% Sky Obscured)

96
84
83
91
88
85
86
90
95
96
98
100
100
100
100
100
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

94
80
81
83
76
70
75
84
92
94
96
98
98
99
100
100
100
100
95
90
74
54
43
27

Medium Clouds (% Sky Obscured)

35
10
5
10
15
16
22
29
37
48
56
70
70
70
65
66
67
72
95
88
90
100
100
97

High Clouds (% Sky Obscured)

35
3
3
0
1
1
1
32
45
31
26
22
45
72
100
100
100
100
100
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
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
Very Light Rain
Very Light Rain
Very Light Rain
Very Light Rain
Very Light Rain
None
None
None

Precipitation Probability (%)

8
10
8
8
7
1
3
2
1
16
24
36
44
47
44
49
55
57
52
50
47
41
31
12

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

2
2
3
3
4
5
6
7
8
8
7
6
6
5
5
4
2
2
1
2
1
1
1
1

Dew Point (°C)

2
3
3
3
4
5
6
7
8
8
7
7
6
5
5
4
3
2
1
1
1
2
2
1

Relative Humidity (%)

88
89
89
91
90
87
87
87
87
87
87
88
88
88
88
88
81
74
74
75
75
82
83
82

Pressure (mb)

1004
1004
1004
1004
1004
1003
1003
1003
1003
1002
1002
1002
1002
1002
1003
1003
1003
1003
1004
1003
1004
1004
1004
1004

Ozone (du)

251
252
250
250
250
248
246
245
245
244
243
243
243
243
241
239
239
239
240
240
239
237
236
237

Friday 13

Waxing Crescent 16%

11:34

18:49

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
00 OK
01 OK
02 OK
03 Good

Sun - Rise: 07:11, Set: 16:20, Transit: 11:46. Moon - Rise: 11:34, Set: 18:49. Civil Dark: 16:55 - 06:36. Nautical Dark: 17:35 - 05:57. Astro Dark: 18:13 - 05:19

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
99
98
98
90
84
74
96
91
86
67
52
35
30
24
18

Low Clouds (% Sky Obscured)

28
30
30
39
49
60
48
48
41
57
73
85
60
44
25
34
28
26
28
29
26
27
24
18

Medium Clouds (% Sky Obscured)

92
63
57
42
38
36
35
40
45
33
17
0
0
0
0
40
40
40
20
8
0
0
0
0

High Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
91
82
69
66
63
65
96
91
86
67
52
35
27
13
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 (%)

13
10
4
4
2
0
0
0
0
0
0
0
2
3
1
0
0
0
1
2
0
2
2
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
6
6
7
9
10
11
12
11
9
7
7
7
7
6
6
6
5
5
5
4
4

Chance of Frost

Temperature (°C)

4
3
3
2
3
3
4
4
5
5
5
5
5
4
3
2
2
2
2
1
1
1
0
0

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

83
80
82
82
82
77
72
67
62
58
57
60
67
72
76
77
79
80
81
81
84
86
86
86

Pressure (mb)

1004
1004
1004
1005
1006
1006
1007
1008
1008
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1018
1019
1020
1021

Ozone (du)

236
238
239
241
241
242
245
246
248
248
249
250
252
254
257
258
260
262
264
267
270
273
271
270

Saturday 14

Waxing Crescent 24%

12:08

19:56

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

Sun - Rise: 07:13, Set: 16:19, Transit: 11:46. Moon - Rise: 12:08, Set: 19:56. Civil Dark: 16:54 - 06:38. Nautical Dark: 17:33 - 05:58. Astro Dark: 18:12 - 05:20

Total Clouds (% Sky Obscured)

17
17
15
13
14
13
11
8
5
8
12
15
17
19
23
30
38
45
44
43
43
45
48
59

Low Clouds (% Sky Obscured)

16
15
12
10
8
8
7
6
5
6
8
9
11
11
16
23
28
41
38
35
32
26
24
25

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
1
1
2
4
5
6
4
2
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
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
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

-0
-0
-1
-1
1
2
3
4
4
5
5
4
4
3
2
1
0
0
-1
-1
-1
-1
-1
-1

Feels Like (°C)

-1
-1
-1
-2
-1
-1
-0
0
0
2
5
5
5
4
4
3
-1
-1
-1
-1
-1
-1
-2
-2

Dew Point (°C)

-2
-2
-2
-3
-3
-3
-2
-2
-2
-2
-2
-2
-2
-2
-2
-3
-3
-3
-3
-3
-3
-3
-3
-3

Relative Humidity (%)

86
86
87
86
80
74
69
66
62
59
62
64
68
72
76
78
80
80
81
83
83
83
83
84

Pressure (mb)

1022
1022
1023
1024
1024
1025
1025
1025
1025
1025
1025
1025
1025
1025
1026
1026
1026
1026
1026
1026
1026
1026
1026
1026

Ozone (du)

268
267
265
264
265
266
267
267
268
269
268
266
265
265
264
264
265
265
266
264
262
260
260
260

Sunday 15

Waxing Crescent 33%

12:34

21:06

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

Sun - Rise: 07:15, Set: 16:17, Transit: 11:46. Moon - Rise: 12:34, Set: 21:06. Civil Dark: 16:53 - 06:39. Nautical Dark: 17:32 - 06:00. Astro Dark: 18:11 - 05:21

Total Clouds (% Sky Obscured)

57
55
57
52
46
47
41
32
24
22
20
18
24
27
32
37
42
46
56
69
87

Low Clouds (% Sky Obscured)

27
33
48
39
34
29
25
20
16
12
10
10
17
23
32
37
42
46
54
62
77

Medium Clouds (% Sky Obscured)

14
28
47
32
17
2
1
1
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
1
1
2
3
3
13
17
20

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

Fog (%)

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

Precipitation Probability (%)

3
5
6
6
3
0
2
1
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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

-4
-3
-3
-3
-3
-2
-2
-2
-3
-3
-3
-3
-3
-3
-3
-4
-4
-4
-4
-4
-4

Relative Humidity (%)

83
84
84
84
81
76
72
64
58
51
52
54
57
61
65
70
70
71
73
71
71

Pressure (mb)

1026
1026
1026
1026
1026
1026
1026
1025
1025
1024
1024
1024
1024
1024
1025
1025
1025
1025
1025
1025
1025

Ozone (du)

260
258
257
255
256
257
259
261
263
265
265
266
267
270
274
277
280
283
286
290
294

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

Generated: 09/11/26 04:44:03. Forecast: 09/11/26 to 15/11/26. Timezone: UTC+1.00