Clear Outside v1.0 - International Weather Forecasts For Astronomers

Tuesday 18

Waning Crescent 1%

06:56

15:49

22 OK
23 OK
00 OK
01 OK
02 OK
03 OK
04 Good
05 OK
06 OK
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: 07:35, Set: 16:44, Transit: 12:09. Moon - Rise: 06:56, Set: 15:49. Civil Dark: 17:17 - 07:01. Nautical Dark: 17:55 - 06:24. Astro Dark: 18:31 - 05:47

Total Clouds (% Sky Obscured)

36
34
16
11
12
9
10
24
21
58
75
68
63
91
100
100
100
100
100
100
96
100
99
99

Low Clouds (% Sky Obscured)

2
15
11
11
12
8
9
11
4
4
0
0
0
0
0
0
0
0
0
0
0
0
16
29

Medium Clouds (% Sky Obscured)

36
0
0
0
0
0
0
0
0
15
0
2
2
2
1
2
90
94
100
100
96
100
98
98

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
13
15
51
75
68
63
91
100
100
100
100
100
98
84
70
65
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
1
3
9
14
20
23
27
25
27
15
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
6
11

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

89
91
89
91
89
87
86
86
84
81
78
67
61
57
51
48
52
59
65
69
71
70
69
69

Pressure (mb)

1019
1019
1019
1018
1018
1018
1017
1016
1016
1015
1015
1015
1014
1013
1011
1011
1010
1009
1009
1009
1008
1008
1008
1008

Ozone (du)

283
285
285
283
284
278
276
279
273
276
275
278
279
277
277
276
276
278
280
282
281
282
282
284

Wednesday 19

Waning Crescent 0%

08:04

16:16

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: 07:36, Set: 16:43, Transit: 12:10. Moon - Rise: 08:04, Set: 16:16. Civil Dark: 17:17 - 07:03. Nautical Dark: 17:54 - 06:25. Astro Dark: 18:31 - 05:49

Total Clouds (% Sky Obscured)

99
100
100
100
100
100
100
100
100
93
77
92
97
100
100
100
70
70
86
90
93
96
100
100

Low Clouds (% Sky Obscured)

40
45
72
99
100
79
76
84
81
77
63
73
81
80
82
50
44
38
68
76
79
88
92
91

Medium Clouds (% Sky Obscured)

98
100
100
100
100
100
100
100
100
71
45
58
92
100
100
100
64
57
57
62
64
57
90
100

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
0
0
0
0
2
9
9
6
8
1
1
8
9
9
9
9
1
0
0
1

Fog (%)

0
0
1
3
4
2
4
63
27
0
0
0
0
0
0
0
0
0
0
0
0
0
0
3

Precipitation Type

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

Precipitation Probability (%)

16
21
31
55
91
95
91
44
33
15
23
28
54
63
61
60
60
52
37
41
48
48
48
47

Precipitation Amount (mm)

0
0
0
0.4
0.9
1.3
0.7
0
0
0
0
0
0.2
0.3
0.3
0.3
0.3
0.2
0
0.1
0.3
0.3
0.4
0.3

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

71
71
65
68
98
98
98
98
89
89
87
87
89
91
89
84
81
83
89
92
96
98
98
98

Pressure (mb)

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

Ozone (du)

283
281
279
287
298
308
309
307
310
317
323
331
338
338
337
336
339
343
344
344
342
338
335
334

Thursday 20

New Moon 2%

09:10

16:52

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: 07:38, Set: 16:42, Transit: 12:10. Moon - Rise: 09:10, Set: 16:52. Civil Dark: 17:16 - 07:04. Nautical Dark: 17:54 - 06:26. Astro Dark: 18:30 - 05:50

Total Clouds (% Sky Obscured)

99
98
93
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
97
92
95
97
100

Low Clouds (% Sky Obscured)

90
89
85
88
78
67
84
74
77
53
60
69
73
76
75
73
66
86
91
80
84
83
86
87

Medium Clouds (% Sky Obscured)

97
91
68
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
93
77
83
91
100

High Clouds (% Sky Obscured)

0
2
8
6
10
24
40
50
50
45
40
45
50
40
35
30
30
25
25
30
35
35
9
2

ISS Passover

Visibility (miles)

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

Fog (%)

7
9
9
1
2
2
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Type

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

Precipitation Probability (%)

47
40
41
34
27
25
15
13
13
24
33
40
44
52
61
64
58
55
51
53
43
52
68
72

Precipitation Amount (mm)

0.2
0.1
0.1
0
0
0
0
0
0
0
0
0
0
0.1
0.2
0.3
0.2
0.2
0.2
0.2
0
0.2
0.4
0.6

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

96
98
98
98
98
98
98
96
96
96
94
94
92
89
89
91
92
91
91
91
89
92
96
98

Pressure (mb)

1015
1015
1015
1015
1016
1016
1016
1016
1017
1017
1018
1018
1018
1019
1019
1019
1019
1019
1020
1021
1021
1022
1023
1023

Ozone (du)

333
333
329
329
327
329
333
333
330
329
329
332
334
334
336
336
339
342
344
344
345
349
351
352

Friday 21

Waxing Crescent 5%

10:10

17:38

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 OK
18 OK
19 OK
20 Bad
21 Bad

Sun - Rise: 07:39, Set: 16:41, Transit: 12:10. Moon - Rise: 10:10, Set: 17:38. Civil Dark: 17:15 - 07:05. Nautical Dark: 17:53 - 06:27. Astro Dark: 18:29 - 05:51

Total Clouds (% Sky Obscured)

100
100
100
98
100
92
89
97
96
96
97
95
83
86
96
90
85
57
49
38
41
40
56
100

Low Clouds (% Sky Obscured)

90
91
87
87
90
79
75
83
81
81
83
81
68
66
73
68
60
32
27
22
17
26
34
40

Medium Clouds (% Sky Obscured)

100
100
99
70
68
67
65
65
65
65
60
60
60
55
55
51
43
34
23
15
8
21
36
50

High Clouds (% Sky Obscured)

13
19
26
23
18
14
24
35
45
30
15
0
2
4
9
10
13
16
13
9
15
14
27
60

ISS Passover

Visibility (miles)

0
0
0
1
1
1
1
0
0
1
1
3
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

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

Precipitation Probability (%)

60
46
33
29
24
19
22
14
19
6
7
4
5
14
1
2
1
1
4
2
0
2
2
1

Precipitation Amount (mm)

0.4
0.2
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
4
4
4
4
4
4
5
5
6
5
5
5

Chance of Frost

Temperature (°C)

-4
-4
-4
-4
-4
-4
-4
-3
-4
-4
-4
-4
-4
-4
-4
-3
-3
-3
-3
-4
-4
-4
-5
-5

Feels Like (°C)

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

Dew Point (°C)

-5
-5
-4
-4
-4
-5
-5
-4
-4
-5
-5
-5
-6
-6
-6
-6
-6
-5
-4
-4
-4
-5
-6
-6

Relative Humidity (%)

98
96
98
98
98
98
96
96
98
96
96
94
90
85
82
78
78
81
92
94
94
94
92
92

Pressure (mb)

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

Ozone (du)

354
353
350
348
344
341
336
332
327
322
316
314
313
310
298
292
297
303
317
322
323
323
322
320

Saturday 22

Waxing Crescent 10%

11:00

18:35

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 Bad
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad
17 Bad
18 Bad
19 Bad
20 Bad
21 Bad

Sun - Rise: 07:41, Set: 16:40, Transit: 12:10. Moon - Rise: 11:00, Set: 18:35. Civil Dark: 17:14 - 07:06. Nautical Dark: 17:52 - 06:29. Astro Dark: 18:29 - 05:52

Total Clouds (% Sky Obscured)

79
87
100
94
88
83
86
88
92
83
74
65
63
66
69
69
78
83
87
93
98
99
99
100

Low Clouds (% Sky Obscured)

36
32
29
32
36
40
43
48
87
54
33
46
50
54
55
44
42
35
44
54
63
74
84
97

Medium Clouds (% Sky Obscured)

50
56
57
70
60
45
50
55
65
70
70
65
63
66
69
69
78
83
87
93
98
82
64
46

High Clouds (% Sky Obscured)

45
48
54
52
48
40
40
40
40
40
40
45
44
50
60
44
39
34
30
45
58
63
72
76

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
5
6
9
9
9
9
8
2
1
1
0
0
0
0
3
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
None
None
None
None
None
None
None
None
None
None
None
None
None
None
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
None

Precipitation Probability (%)

1
0
0
0
0
0
0
2
13
3
6
3
11
6
21
42
47
50
59
60
70
70
55
36

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.1
0.2
0.2
0.3
0.2
0.4
0.4
0.2
0

Wind Speed/Direction (mph)

4
4
4
4
4
3
3
3
3
3
3
3
3
3
4
7
6
7
7
7
7
7
7
8

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

90
90
90
87
87
85
84
84
84
87
85
81
78
76
75
81
86
92
96
98
98
98
96
94

Pressure (mb)

1021
1021
1020
1020
1019
1018
1018
1018
1018
1017
1017
1017
1016
1015
1015
1014
1014
1013
1013
1013
1012
1012
1011
1011

Ozone (du)

318
314
311
307
305
305
305
304
302
301
300
299
298
298
298
294
294
293
293
296
299
302
300
298

Sunday 23

Waxing Crescent 16%

11:41

19:40

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: 07:42, Set: 16:39, Transit: 12:11. Moon - Rise: 11:41, Set: 19:40. Civil Dark: 17:14 - 07:08. Nautical Dark: 17:52 - 06:30. Astro Dark: 18:28 - 05:53

Total Clouds (% Sky Obscured)

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

Low Clouds (% Sky Obscured)

91
86
80
84
88
92
91
92
91
83
75
67
63
59
55
55
65
69
73
76
75
62
50
39

Medium Clouds (% Sky Obscured)

56
66
75
81
87
94
96
99
100
97
92
88
92
96
100
100
100
100
100
100
100
91
81
72

High Clouds (% Sky Obscured)

82
88
90
91
95
100
100
100
100
92
84
78
86
93
100
100
100
100
86
75
64
49
36
22

ISS Passover

Visibility (miles)

9
9
9
9
8
7
5
4
2
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

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

Precipitation Probability (%)

37
37
32
39
55
70
78
89
95
95
95
95
83
67
44
52
51
42
60
70
72
66
55
34

Precipitation Amount (mm)

0.1
0.1
0
0.1
0.3
0.5
0.5
0.7
1
0.9
0.9
0.9
0.6
0.4
0
0
0
0
0.2
0.4
0.6
0.3
0.2
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

94
94
94
94
94
92
92
96
96
100
100
100
100
100
100
100
100
100
100
100
100
100
98
98

Pressure (mb)

1010
1010
1009
1009
1008
1007
1006
1006
1005
1004
1003
1003
1002
1000
999
997
997
997
996
996
996
996
996
996

Ozone (du)

296
296
295
294
293
291
289
287
286
284
284
285
285
285
284
283
283
283
284
283
283
282
285
287

Monday 24

Waxing Crescent 24%

12:12

20:51

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

Sun - Rise: 07:43, Set: 16:39, Transit: 12:11. Moon - Rise: 12:12, Set: 20:51. Civil Dark: 17:13 - 07:09. Nautical Dark: 17:51 - 06:31. Astro Dark: 18:28 - 05:54

Total Clouds (% Sky Obscured)

87
73
60
75
88
100
100
100
100
96
91
87
91
94
98
97
96
96
94
93
92

Low Clouds (% Sky Obscured)

48
48
53
59
64
70
76
82
83
85
85
79
79
80
83
76
70
62
64
64
66

Medium Clouds (% Sky Obscured)

70
66
56
60
65
76
87
95
100
91
83
75
78
80
84
87
92
95
94
93
92

High Clouds (% Sky Obscured)

23
34
40
60
77
85
86
89
91
83
72
49
59
71
85
76
68
59
62
67
62

ISS Passover

Visibility (miles)

0
1
2
3
5
7
9
9
9
9
6
3
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

Precipitation Type

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

Precipitation Probability (%)

34
26
12
21
29
38
46
44
27
48
54
52
68
79
81
73
74
79
69
65
65

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0.3
0.5
0.5
0.3
0.4
0.5
0.4
0.3
0.3

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

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

Pressure (mb)

996
996
997
997
997
997
998
998
998
998
999
999
1000
1000
1001
1001
1002
1003
1003
1005
1006

Ozone (du)

290
292
295
298
302
305
309
312
316
319
319
320
320
315
310
305
304
304
303
304
306

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

Generated: 18/11/25 22:13:53. Forecast: 18/11/25 to 24/11/25. Timezone: UTC+1.00