Clear Outside v1.0 - International Weather Forecasts For Astronomers

Wednesday 31

Waxing Gibbous 88%

14:14

06:24

22 Good
23 Good
00 Good
01 Good
02 Good
03 Good
04 OK
05 OK
06 Good
07 Good
08 Good
09 OK
10 OK
11 Good
12 Good
13 Bad
14 Bad
15 Bad
16 Bad
17 Bad
18 Bad
19 Bad
20 Bad
21 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: 18:36 - 06:19

Total Clouds (% Sky Obscured)

0
0
1
2
5
12
39
27
5
6
5
22
26
5
8
66
91
55
87
100
69
100
62
98

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
6
7
0
0

Medium Clouds (% Sky Obscured)

0
0
0
0
0
3
2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

0
0
1
2
5
11
38
26
3
5
3
21
26
4
6
66
91
45
87
100
69
100
41
96

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
1
2
4
6
7
0
1
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
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
3
3
3
3
3
4
4
4
4
5
5
5
6
8
9
11
10
10
11
11
11
10
11

Chance of Frost

Temperature (°C)

-7
-7
-7
-8
-7
-8
-7
-8
-8
-8
-7
-7
-5
-2
-1
0
1
1
-0
-1
-1
-1
-2
-2

Feels Like (°C)

-8
-8
-8
-9
-9
-9
-9
-11
-10
-9
-10
-9
-8
-6
-4
-4
-5
-5
-5
-5
-6
-6
-6
-4

Dew Point (°C)

-13
-13
-13
-13
-13
-13
-13
-13
-13
-13
-13
-14
-13
-13
-12
-11
-10
-9
-9
-7
-7
-7
-7
-7

Relative Humidity (%)

63
62
63
63
64
64
66
64
64
63
62
57
51
43
43
43
46
48
52
61
64
67
69
69

Pressure (mb)

1026
1025
1025
1024
1023
1023
1022
1021
1021
1020
1020
1019
1019
1017
1016
1014
1013
1013
1012
1012
1012
1012
1012
1012

Ozone (du)

327
324
322
318
315
313
314
314
317
318
313
315
316
316
318
318
323
318
316
318
322
334
334
341

Thursday 1

Waxing Gibbous 97%

15:17

07:39

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
18 Bad
19 Bad
20 Bad
21 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: 18:37 - 06:19

Total Clouds (% Sky Obscured)

100
100
95
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
99
95

Low Clouds (% Sky Obscured)

0
0
0
0
0
2
2
2
20
18
47
88
90
76
68
74
71
69
71
92
89
91
91
93

Medium Clouds (% Sky Obscured)

35
38
71
74
69
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
99
100
95
92

High Clouds (% Sky Obscured)

100
100
95
100
100
100
100
100
100
100
100
57
56
50
45
7
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
7
3
9
3
9
9
9
4

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
Snow
None
None
Snow

Precipitation Probability (%)

0
0
0
0
0
0
0
1
1
2
2
2
4
4
5
15
20
23
23
32
38
24
25
50

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.1
0
0
0.2

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-7
-7
-6
-7
-7
-8
-9
-9
-7
-7
-7
-7
-6
-7
-7
-6
-5
-5
-5
-6
-6
-7
-7
-6

Dew Point (°C)

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

Relative Humidity (%)

68
67
68
69
73
68
60
57
57
59
62
63
61
66
64
66
71
78
78
80
77
71
71
75

Pressure (mb)

1013
1013
1012
1012
1012
1012
1011
1011
1010
1010
1010
1010
1010
1010
1010
1008
1008
1008
1007
1007
1007
1007
1007
1007

Ozone (du)

370
385
389
389
381
375
373
375
374
364
365
364
362
361
355
353
353
355
361
363
359
356
358
362

Friday 2

Waxing Gibbous 100%

16:34

08:39

22 Bad
23 Bad
00 Bad
01 Bad
02 Bad
03 Bad
04 Bad
05 Bad
06 Bad
07 OK
08 OK
09 OK
10 OK
11 Good
12 OK
13 OK
14 OK
15 Good
16 Good
17 Good
18 OK
19 Bad
20 Bad
21 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: 18:00 - 06:57. Astro Dark: 18:38 - 06:20

Total Clouds (% Sky Obscured)

100
100
97
74
75
77
77
34
50
35
29
26
12
12
17
22
32
4
4
8
23
46
48
49

Low Clouds (% Sky Obscured)

97
100
82
72
73
72
75
33
48
35
29
26
12
12
16
22
30
2
2
6
19
36
43
44

Medium Clouds (% Sky Obscured)

100
100
89
50
55
55
13
2
2
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)

0
0
0
0
0
0
0
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
1
1
1
0
0
1
1
1
1
1
1
1
1
1
1

Precipitation Type

Snow
Snow
Snow
Snow
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

64
95
92
73
53
45
33
16
11
10
9
7
7
5
3
3
3
2
3
2
2
2
4
4

Precipitation Amount (mm)

0.2
1
0.5
0.2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

14
15
15
16
14
11
10
10
9
8
8
6
5
6
8
9
9
8
7
7
7
7
6
5

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-6
-6
-7
-7
-7
-8
-8
-9
-7
-9
-8
-8
-8
-7
-7
-6
-6
-6
-6
-6
-7
-8
-9
-9

Dew Point (°C)

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

Relative Humidity (%)

91
92
94
96
94
92
91
89
87
79
79
76
75
65
62
59
62
67
71
85
90
90
87
89

Pressure (mb)

1007
1007
1008
1008
1009
1010
1011
1011
1011
1012
1012
1012
1013
1013
1012
1012
1012
1012
1012
1013
1014
1014
1014
1015

Ozone (du)

347
335
330
317
313
303
297
299
307
315
324
325
332
340
347
354
356
359
363
369
364
362
362
362

Saturday 3

Full Moon 99%

17:59

09:22

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

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: 18:01 - 06:57. Astro Dark: 18:38 - 06:20

Total Clouds (% Sky Obscured)

59
65
69
60
32
24
15
9
3
4
5
5
5
6
7
5
2
0
0
2
2
2
2
2

Low Clouds (% Sky Obscured)

55
62
66
59
30
23
14
8
2
3
4
4
4
5
7
5
2
0
0
2
2
2
2
2

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)

2
3
2
6
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9

Fog (%)

1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1

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
15
4
2
1
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-10
-9
-10
-11
-11
-10
-10
-11
-12
-12
-10
-10
-9
-8
-6
-5
-5
-5
-5
-6
-7
-8
-8
-9

Dew Point (°C)

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

Relative Humidity (%)

90
92
92
94
94
94
92
92
92
90
90
87
75
70
66
64
63
64
78
87
90
90
90
90

Pressure (mb)

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

Ozone (du)

364
364
368
370
373
362
353
350
345
343
340
339
339
339
340
341
340
343
343
344
346
347
347
347

Sunday 4

Waning Gibbous 96%

19:23

09:53

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

Sun - Rise: 08:10, Set: 16:48, Transit: 12:29. Moon - Rise: 19:23, Set: 09:53. Civil Dark: 17:24 - 07:35. Nautical Dark: 18:02 - 06:57. Astro Dark: 18:39 - 06:19

Total Clouds (% Sky Obscured)

3
3
4
11
19
25
27
26
23
50
26
7
9
9
11
9
6
3
2
2
2
2
3
2

Low Clouds (% Sky Obscured)

3
2
2
2
2
2
2
2
2
2
2
2
5
9
11
9
5
2
2
2
2
2
2
1

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
2
3
3
44
20
4
4
0
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

0
0
0
10
19
25
27
26
23
18
8
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 (%)

1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1

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
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-9
-10
-11
-10
-11
-11
-11
-12
-12
-13
-13
-12
-11
-9
-8
-7
-7
-6
-6
-6
-5
-5
-10
-11

Dew Point (°C)

-9
-10
-10
-10
-11
-11
-12
-12
-13
-13
-12
-13
-13
-13
-12
-11
-11
-10
-9
-9
-9
-10
-10
-11

Relative Humidity (%)

92
90
90
90
90
88
86
86
86
85
85
78
72
68
68
65
69
73
76
80
85
88
88
88

Pressure (mb)

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

Ozone (du)

347
347
346
347
345
345
346
349
350
350
351
353
355
356
357
356
357
357
357
358
359
360
362
363

Monday 5

Waning Gibbous 91%

20:43

10:16

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

Sun - Rise: 08:10, Set: 16:49, Transit: 12:30. Moon - Rise: 20:43, Set: 10:16. Civil Dark: 17:25 - 07:35. Nautical Dark: 18:03 - 06:56. Astro Dark: 18:40 - 06:19

Total Clouds (% Sky Obscured)

2
3
3
16
33
48
49
54
46
24
11
4
4
4
4
11
26
39
56
73
89
92
96
100

Low Clouds (% Sky Obscured)

1
1
1
2
2
2
2
3
4
3
3
3
3
4
4
3
3
3
11
18
21
25
30
36

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
1
1
0
0
0
0
0
0
8
16
23
27
28
32
60
80
99

High Clouds (% Sky Obscured)

0
0
0
6
13
19
18
16
19
10
5
1
1
1
1
6
16
27
47
64
85
90
95
100

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
7
4
1
1
1

Fog (%)

1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1

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
4
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-11
-11
-11
-11
-12
-13
-13
-13
-13
-13
-14
-14
-14
-13
-13
-12
-8
-8
-8
-9
-8
-9
-14
-13

Dew Point (°C)

-12
-12
-12
-12
-12
-12
-13
-12
-13
-13
-13
-12
-13
-12
-11
-10
-10
-9
-8
-9
-9
-9
-10
-10

Relative Humidity (%)

88
88
88
88
86
86
86
88
88
88
85
81
77
74
71
69
73
76
80
85
88
94
94
94

Pressure (mb)

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

Ozone (du)

365
366
368
369
371
373
375
380
386
391
391
391
390
390
390
390
389
388
386
386
385
385
385
386

Tuesday 6

Waning Gibbous 83%

21:58

10:35

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 OK
14 Bad
15 Bad
16 Bad
17 Bad
18 Bad

Sun - Rise: 08:10, Set: 16:51, Transit: 12:30. Moon - Rise: 21:58, Set: 10:35. Civil Dark: 17:26 - 07:35. Nautical Dark: 18:04 - 06:56. Astro Dark: 18:41 - 06:19

Total Clouds (% Sky Obscured)

100
100
100
96
93
90
94
97
100
84
69
53
48
38
30
38
52
67
77
86
92

Low Clouds (% Sky Obscured)

46
47
54
59
65
70
75
80
80
80
69
53
45
37
30
20
11
2
26
49
70

Medium Clouds (% Sky Obscured)

100
100
100
95
88
81
85
81
69
44
21
0
0
0
0
8
12
19
30
46
59

High Clouds (% Sky Obscured)

100
100
100
89
81
85
80
72
63
43
23
3
3
1
0
0
0
0
0
0
0

ISS Passover

Visibility (miles)

1
1
1
1
1
0
0
0
0
0
3
6
9
9
9
9
9
9
9
9
9

Fog (%)

1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1

Precipitation Type

None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
Snow

Precipitation Probability (%)

7
8
8
9
9
8
8
9
10
9
8
7
5
2
0
4
3
2
14
27
42

Precipitation Amount (mm)

0
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)

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

Chance of Frost

Temperature (°C)

-9
-10
-10
-9
-10
-10
-10
-10
-11
-11
-10
-10
-9
-8
-7
-5
-5
-5
-4
-5
-5

Feels Like (°C)

-12
-13
-13
-13
-13
-13
-14
-13
-13
-13
-13
-13
-14
-13
-13
-12
-6
-7
-5
-6
-4

Dew Point (°C)

-10
-11
-11
-10
-11
-10
-11
-11
-12
-12
-11
-11
-12
-11
-11
-10
-9
-9
-8
-8
-7

Relative Humidity (%)

92
92
94
92
92
94
92
92
92
94
90
87
83
79
73
67
70
73
76
79
82

Pressure (mb)

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

Ozone (du)

387
388
389
390
390
391
391
391
390
390
389
388
386
391
395
400
397
393
390
390
389

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

Generated: 31/12/25 22:47:42. Forecast: 31/12/25 to 06/01/26. Timezone: UTC+1.00