Clear Outside v1.0 - International Weather Forecasts For Astronomers

Sunday 28

Waxing Gibbous 61%

12:30

02:09

18 OK
19 OK
20 OK
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 OK
12 OK
13 Good
14 Good
15 Good
16 Good
17 Good

Sun - Rise: 08:11, Set: 16:41, Transit: 12:26. Moon - Rise: 12:30, Set: 02:09. Civil Dark: 17:17 - 07:35. Nautical Dark: 17:56 - 06:56. Astro Dark: 18:33 - 06:19

Total Clouds (% Sky Obscured)

18
25
31
49
53
53
53
53
53
53
53
53
53
53
53
53
50
42
26
2
0
0
0
0

Low Clouds (% Sky Obscured)

18
25
31
49
53
53
53
53
53
53
53
53
53
53
53
53
50
42
25
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
0
0
0
0
0
0
0
0
0
3
4
3
2
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
34
58
79
94
96
97
31
56
53
66
56
45
11
9
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
8
6
5
4
4
3
2
1
2
2
2
1
1
2
2
3
3
4
4
3
3
3

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

89
91
91
92
92
92
92
94
94
94
94
92
92
92
91
89
78
70
62
61
60
67
74
81

Pressure (mb)

1027
1027
1027
1027
1026
1026
1026
1026
1026
1026
1026
1026
1026
1026
1026
1026
1026
1025
1024
1023
1022
1022
1022
1022

Ozone (du)

303
302
302
302
302
303
306
309
314
318
316
318
318
320
321
319
321
323
326
328
327
327
325
323

Monday 29

Waxing Gibbous 72%

12:55

03:32

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

Sun - Rise: 08:11, Set: 16:42, Transit: 12:27. Moon - Rise: 12:55, Set: 03:32. Civil Dark: 17:18 - 07:35. Nautical Dark: 17:57 - 06:56. Astro Dark: 18:33 - 06:19

Total Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
2
22
6
5
64
83
94
95
95
86
70
92
90
56
55
53

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
2
22
6
4
62
83
94
95
94
85
70
92
90
56
55
53

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
5
3
3
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
1
1
2
2
2
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
1
2
13
8
4
2
0
1
1
1
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
3
3
2
2
3
2
2
3
3
3
3
3
3
3
4
4
4
5
8
9
9
9
9

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-2
-3
-3
-3
-3
-3
-4
-4
-5
-6
-7
-7
-7
-10
-10
-9
-7
-7
-8
-7
-7
-7
-6
-5

Dew Point (°C)

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

Relative Humidity (%)

83
81
81
81
79
79
81
81
82
84
84
82
80
76
77
84
85
81
65
57
56
58
65
78

Pressure (mb)

1022
1023
1023
1023
1023
1023
1024
1024
1024
1024
1025
1025
1025
1026
1026
1026
1026
1026
1026
1026
1025
1026
1026
1027

Ozone (du)

321
322
320
317
313
309
309
311
312
308
308
304
305
304
308
309
307
300
290
286
284
285
285
286

Tuesday 30

Waxing Gibbous 82%

13:28

04:59

18 OK
19 OK
20 OK
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 OK
15 OK
16 OK
17 OK

Sun - Rise: 08:11, Set: 16:43, Transit: 12:27. Moon - Rise: 13:28, Set: 04:59. Civil Dark: 17:19 - 07:36. Nautical Dark: 17:58 - 06:57. Astro Dark: 18:34 - 06:19

Total Clouds (% Sky Obscured)

40
32
23
11
14
13
9
0
0
0
0
3
5
12
4
3
0
2
0
13
30
40
37
38

Low Clouds (% Sky Obscured)

40
31
23
10
14
13
9
0
0
0
0
0
0
7
3
0
0
0
0
2
3
5
16
28

Medium Clouds (% Sky Obscured)

0
0
0
3
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
11
25
30
34
38

High Clouds (% Sky Obscured)

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

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-6
-6
-7
-8
-8
-8
-9
-8
-8
-8
-8
-8
-8
-9
-9
-9
-8
-5
-4
-4
-3
-3
-2
-4

Dew Point (°C)

-5
-5
-7
-10
-11
-12
-12
-12
-12
-11
-11
-10
-11
-11
-11
-12
-12
-11
-11
-12
-13
-13
-11
-11

Relative Humidity (%)

82
82
76
66
61
57
60
63
66
70
71
73
74
74
76
72
65
58
50
46
42
41
47
52

Pressure (mb)

1027
1028
1028
1028
1029
1029
1029
1029
1029
1029
1029
1029
1029
1029
1030
1030
1030
1029
1029
1028
1027
1027
1027
1028

Ozone (du)

294
308
322
326
331
339
344
346
353
354
351
349
348
347
349
349
350
348
345
341
339
338
338
336

Wednesday 31

Waxing Gibbous 91%

14:14

06:24

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

Sun - Rise: 08:11, Set: 16:44, Transit: 12:28. Moon - Rise: 14:14, Set: 06:24. Civil Dark: 17:20 - 07:36. Nautical Dark: 17:59 - 06:57. Astro Dark: 18:35 - 06:19

Total Clouds (% Sky Obscured)

39
44
44
45
41
37
33
24
11
3
3
16
25
4
4
23
29
42
27
42
74
82
76
85

Low Clouds (% Sky Obscured)

39
41
42
44
38
34
28
19
9
0
0
0
0
0
0
0
0
0
0
8
15
21
26
30

Medium Clouds (% Sky Obscured)

39
44
43
43
35
28
20
13
6
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
3
3
16
25
2
4
23
29
37
23
42
72
82
71
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
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

0
2
2
1
2
2
1
1
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)

3
3
3
3
3
2
2
2
2
2
2
3
3
3
4
4
4
5
7
8
9
8
9
10

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

54
54
56
56
56
56
56
54
55
54
53
53
54
54
56
55
48
43
38
36
35
39
45
50

Pressure (mb)

1028
1028
1028
1027
1027
1026
1026
1025
1024
1024
1023
1022
1022
1021
1021
1020
1019
1018
1017
1016
1015
1015
1014
1014

Ozone (du)

337
338
337
336
333
333
334
337
337
337
333
332
332
330
328
326
327
327
327
328
327
327
326
326

Thursday 1

Waxing Gibbous 97%

15:17

07:39

18 Bad
19 Bad
20 Bad
21 OK
22 OK
23 OK
00 OK
01 OK
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

Sun - Rise: 08:11, Set: 16:45, Transit: 12:28. Moon - Rise: 15:17, Set: 07:39. Civil Dark: 17:21 - 07:36. Nautical Dark: 17:59 - 06:57. Astro Dark: 18:36 - 06:19

Total Clouds (% Sky Obscured)

80
74
72
21
24
29
31
34
40
40
48
45
46
78
86
93
78
63
49
56
64
73
68
64

Low Clouds (% Sky Obscured)

34
31
28
21
18
12
5
24
38
40
48
45
46
53
49
49
47
45
42
53
58
64
59
55

Medium Clouds (% Sky Obscured)

0
0
0
2
7
12
14
18
24
25
20
20
15
40
38
32
21
11
0
0
0
0
0
0

High Clouds (% Sky Obscured)

46
44
44
2
10
20
30
34
40
40
48
45
41
6
11
24
19
17
10
21
40
49
33
18

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
1
1
2
7
10
12
26
30
31
0
0
0
0
0
0
0
0
0
0
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

-11
-12
-12
-12
-11
-9
-8
-8
-7
-7
-7
-7
-6
-6
-7
-7
-7
-7
-7
-6
-5
-4
-4
-4

Relative Humidity (%)

51
50
49
50
56
62
67
67
69
71
72
71
72
74
71
67
64
62
60
58
62
66
70
71

Pressure (mb)

1014
1014
1014
1014
1014
1014
1013
1013
1013
1013
1013
1012
1012
1011
1010
1010
1010
1009
1009
1008
1008
1008
1007
1008

Ozone (du)

328
331
334
332
332
332
332
330
331
328
328
329
325
324
323
322
321
317
313
310
307
304
302
298

Friday 2

Waxing Gibbous 100%

16:34

08:39

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
17 Bad

Sun - Rise: 08:11, Set: 16:46, Transit: 12:29. Moon - Rise: 16:34, Set: 08:39. Civil Dark: 17:22 - 07:36. Nautical Dark: N/A - 06:57. Astro Dark: 18:37 - 06:20

Total Clouds (% Sky Obscured)

59
63
65
58
70
85
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

56
58
62
58
64
66
61
59
63
67
78
90
100
100
100
100
100
100
100
100
100
100
100
100

Medium Clouds (% Sky Obscured)

0
5
8
8
37
69
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100

High Clouds (% Sky Obscured)

1
8
9
13
42
71
100
100
100
100
97
94
92
71
50
30
53
79
99
99
99
98
99
99

ISS Passover

Visibility (miles)

9
9
6
3
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
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
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain

Precipitation Probability (%)

0
12
18
22
39
52
65
75
85
95
95
95
95
95
95
95
95
95
95
95
95
95
95
95

Precipitation Amount (mm)

0
0
0
0
0.1
0.2
0.4
0.5
0.6
0.8
0.9
1.1
1.6
1.4
1.5
1.7
1.8
1.6
1.4
1.6
1.8
2.1
1.9
1.9

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

74
77
83
89
98
100
98
98
98
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100

Pressure (mb)

1008
1008
1007
1007
1007
1006
1006
1005
1005
1004
1003
1003
1002
1001
1001
1001
1000
1000
999
999
998
998
998
999

Ozone (du)

295
291
290
288
286
289
292
294
295
296
297
299
301
303
305
307
310
313
316
320
327
334
341
345

Saturday 3

Full Moon 99%

17:59

09:22

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

Sun - Rise: 08:11, Set: 16:47, Transit: 12:29. Moon - Rise: 17:59, Set: 09:22. Civil Dark: 17:23 - 07:35. Nautical Dark: 18:00 - 06:57. Astro Dark: 18:38 - 06:20

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
99
99
99
98
98
98
99
100
99
99
98

Medium Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100

High Clouds (% Sky Obscured)

100
99
96
88
84
85
91
88
86
90
89
85
86
90
95
100
72
43
16

ISS Passover

Visibility (miles)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
2

Fog (%)

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

Precipitation Type

Light Rain
Light Rain
Light Rain
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow

Precipitation Probability (%)

95
95
95
95
95
95
95
95
95
95
95
95
95
95
95
86
72
59
44

Precipitation Amount (mm)

2
1.8
2
2.4
2.1
1.9
1.9
1.8
1.9
2.1
1.7
1.5
1.5
1.1
0.8
0.5
0.4
0.2
0.1

Wind Speed/Direction (mph)

5
5
4
3
3
3
4
4
4
4
4
4
4
4
4
3
3
3
4

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-1
-1
-2
-3
-3
-3
-3
-3
-5
-5
-5
-6
-6
-5
-6
-6
-6
-7
-7

Dew Point (°C)

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

Relative Humidity (%)

100
100
100
100
98
98
98
98
98
98
96
98
98
96
98
98
96
94
91

Pressure (mb)

999
999
1000
1000
1001
1001
1002
1002
1003
1004
1005
1005
1006
1007
1008
1009
1010
1010
1010

Ozone (du)

349
353
355
356
358
356
353
351
350
349
348
347
346
344
346
347
348
348
348

Forecast for Lettenboden, Bezirk Pfäffikon, Switzerland (47.38,8.92)

Generated: 28/12/25 18:30:36. Forecast: 28/12/25 to 03/01/26. Timezone: UTC+1.00