Clear Outside v1.0 - International Weather Forecasts For Astronomers

Sunday 31

Full Moon 100%

22:00

05:36

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 OK
13 OK
14 OK
15 OK
16 Bad
17 Bad
18 Bad

Sun - Rise: 05:31, Set: 21:12, Transit: 13:22. Moon - Rise: 22:00, Set: 05:36. Civil Dark: 21:51 - 04:52. Nautical Dark: 22:43 - 03:59. Astro Dark: 23:56 - 02:45

Total Clouds (% Sky Obscured)

94
95
96
100
100
98
96
99
99
95
92
91
89
88
79
45
38
33
26
42
19
70
100
100

Low Clouds (% Sky Obscured)

37
36
42
72
83
89
48
31
60
70
75
79
78
77
66
32
30
28
26
26
8
1
12
11

Medium Clouds (% Sky Obscured)

81
89
96
100
100
93
84
95
96
85
77
66
68
64
36
31
27
22
1
23
4
0
0
0

High Clouds (% Sky Obscured)

94
95
96
100
100
21
0
0
0
0
0
0
0
0
0
0
0
0
0
4
6
56
100
100

ISS Passover

Visibility (miles)

1
8
7
1
9
8
4
9
4
4
4
6
6
5
9
8
8
9
9
9
9
9
9
9

Fog (%)

0
37
0
0
0
66
0
0
0
53
22
10
5
2
0
0
0
0
0
0
0
0
0
0

Precipitation Type

Moderate Rain
Moderate Rain
Moderate Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
None
None
None
None
None
None
None
None

Precipitation Probability (%)

95
95
95
95
95
95
95
95
82
85
82
69
65
58
59
57
34
4
4
0
2
3
0
1

Precipitation Amount (mm)

3.4
2.8
2.8
2.1
1.6
1.4
1.5
0.5
0.5
0.7
0.7
0.5
0.5
0.4
0.4
0.4
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

5
6
9
9
8
6
6
6
4
3
3
3
3
3
4
4
5
6
5
5
5
5
4
3

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

16
14
14
15
16
16
16
15
14
13
13
13
12
14
15
17
19
20
20
21
22
23
22
21

Dew Point (°C)

15
14
14
14
15
15
15
15
14
13
13
12
10
12
14
14
12
11
9
9
9
10
10
12

Relative Humidity (%)

88
89
92
93
96
95
96
98
96
96
96
95
89
89
90
86
77
68
57
52
49
48
50
53

Pressure (mb)

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

Ozone (du)

338
340
340
340
341
345
348
348
353
357
360
359
354
352
350
349
348
349
348
348
348
348
347
347

Monday 1

Waning Gibbous 97%

22:54

06:27

19 Bad
20 Bad
21 Bad
22 Good
23 OK
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: 05:30, Set: 21:13, Transit: 13:22. Moon - Rise: 22:54, Set: 06:27. Civil Dark: 21:52 - 04:51. Nautical Dark: 22:45 - 03:58. Astro Dark: 23:59 - 02:43

Total Clouds (% Sky Obscured)

100
72
53
12
37
97
90
93
100
100
100
99
100
93
100
100
75
85
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

6
2
0
0
0
0
0
0
0
0
0
0
0
0
0
21
9
6
3
33
52
68
76
83

Medium Clouds (% Sky Obscured)

0
0
0
0
6
3
38
2
2
0
0
0
10
24
97
63
59
55
40
97
100
100
100
100

High Clouds (% Sky Obscured)

100
69
34
9
37
96
81
93
100
100
100
99
100
80
100
100
57
38
84
88
93
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
5
8
1
2

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
Very Light Rain
Very Light Rain
Light Rain
Moderate Rain
Moderate Rain

Precipitation Probability (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
2
8
10
14
17
21
67
82
95
95
95

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.3
0.3
2.4
6.7
6.4

Wind Speed/Direction (mph)

3
3
3
4
4
3
4
4
4
4
4
4
4
3
3
5
4
4
4
7
4
6
14
12

Chance of Frost

Temperature (°C)

20
19
16
15
14
13
12
12
12
12
12
12
13
15
17
18
20
20
21
20
20
22
18
15

Feels Like (°C)

20
19
16
15
15
13
11
12
11
11
11
11
13
15
17
18
20
20
21
20
19
22
15
11

Dew Point (°C)

14
14
11
10
10
10
10
10
10
10
10
10
10
11
11
12
12
10
9
7
12
21
18
15

Relative Humidity (%)

67
73
73
74
80
86
87
87
89
88
87
86
83
76
69
67
59
51
45
41
60
94
96
96

Pressure (mb)

1015
1015
1015
1015
1015
1015
1014
1014
1013
1013
1013
1013
1013
1012
1012
1011
1010
1010
1009
1007
1007
1006
1008
1010

Ozone (du)

345
343
342
341
340
339
339
338
338
337
336
336
337
337
339
344
350
355
355
355
353
358
356
359

Tuesday 2

Waning Gibbous 94%

23:39

07:27

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
18 Bad

Sun - Rise: 05:30, Set: 21:14, Transit: 13:22. Moon - Rise: 23:39, Set: 07:27. Civil Dark: 21:53 - 04:50. Nautical Dark: 22:46 - 03:57. Astro Dark: 00:01 - 02:41

Total Clouds (% Sky Obscured)

100
100
100
100
84
73
65
51
53
100
84
96
100
100
100
79
53
90
76
52
39
32
39
48

Low Clouds (% Sky Obscured)

71
64
35
46
76
35
28
38
37
73
58
74
72
74
80
56
48
88
68
47
35
27
26
27

Medium Clouds (% Sky Obscured)

100
100
100
73
69
50
2
9
25
99
23
57
88
90
55
74
8
21
17
17
15
13
27
48

High Clouds (% Sky Obscured)

100
100
100
100
40
50
50
10
2
55
46
45
65
70
70
75
2
5
0
0
0
0
23
40

ISS Passover

Visibility (miles)

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

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

Precipitation Probability (%)

95
83
61
79
66
39
28
30
32
46
48
62
94
90
69
69
87
78
77
63
60
49
47
40

Precipitation Amount (mm)

1.8
0.3
0
0.3
0.3
0
0
0
0
0
0
0
0.7
0.6
0.3
0.3
0.7
0.4
0.4
0.3
0.2
0
0
0

Wind Speed/Direction (mph)

14
11
12
11
12
11
12
11
11
10
11
10
10
11
10
10
12
12
12
11
11
10
9
8

Chance of Frost

Temperature (°C)

13
12
13
13
12
12
11
11
11
11
11
10
11
11
12
13
13
14
15
14
13
13
13
13

Feels Like (°C)

9
11
11
11
10
9
8
8
9
10
9
9
8
9
9
10
11
11
12
12
11
11
12
12

Dew Point (°C)

11
11
12
12
11
11
10
10
10
10
10
9
10
11
11
11
9
11
12
9
6
5
4
4

Relative Humidity (%)

92
93
93
93
93
90
90
91
93
95
93
95
95
96
93
90
77
83
84
74
64
59
53
55

Pressure (mb)

1011
1011
1011
1012
1012
1012
1012
1013
1013
1013
1013
1013
1014
1015
1015
1015
1015
1015
1015
1015
1015
1015
1014
1014

Ozone (du)

363
367
368
370
378
378
383
386
385
384
386
392
393
397
403
406
404
404
407
410
411
410
397
380

Wednesday 3

Waning Gibbous 88%

00:14

08:34

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
18 Bad

Sun - Rise: 05:29, Set: 21:15, Transit: 13:22. Moon - Rise: 00:14, Set: 08:34. Civil Dark: 21:54 - 04:50. Nautical Dark: 22:47 - 03:56. Astro Dark: 00:03 - 02:39

Total Clouds (% Sky Obscured)

51
54
53
58
63
81
77
81
88
90
69
79
85
65
72
71
91
97
75
100
100
100
100
100

Low Clouds (% Sky Obscured)

22
17
12
8
5
3
0
10
20
29
20
10
0
6
13
21
15
9
2
11
2
0
6
14

Medium Clouds (% Sky Obscured)

51
54
53
53
48
73
51
41
81
75
57
60
71
52
62
62
86
95
64
72
77
95
100
100

High Clouds (% Sky Obscured)

51
50
40
35
41
42
60
59
58
52
32
47
38
52
56
62
62
72
72
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
None
None
None
None
None
None
None
None

Precipitation Probability (%)

38
24
15
1
1
1
0
0
0
0
0
0
0
0
0
0
2
5
8
11
11
7
14
18

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

Chance of Frost

Temperature (°C)

12
12
12
12
11
11
10
9
10
10
11
11
12
13
15
16
18
17
17
17
17
17
17
16

Feels Like (°C)

12
13
13
12
11
10
9
8
8
8
9
11
11
12
16
17
18
16
15
16
15
16
15
15

Dew Point (°C)

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

Relative Humidity (%)

64
73
83
87
84
85
85
84
85
84
85
86
80
69
61
54
47
43
41
41
43
44
47
58

Pressure (mb)

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

Ozone (du)

372
367
362
358
356
352
349
348
347
347
348
348
350
349
348
347
347
347
346
345
342
339
338
336

Thursday 4

Waning Gibbous 81%

00:42

09:43

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
18 Bad

Sun - Rise: 05:29, Set: 21:15, Transit: 13:22. Moon - Rise: 00:42, Set: 09:43. Civil Dark: 21:55 - 04:49. Nautical Dark: 22:48 - 03:55. Astro Dark: 00:05 - 02:37

Total Clouds (% Sky Obscured)

100
100
97
100
81
92
89
92
95
98
97
96
95
94
96
97
98
99
100
100
100
100
98
95

Low Clouds (% Sky Obscured)

20
30
39
49
63
79
79
73
72
66
63
59
52
87
91
95
86
76
64
59
58
57
44
35

Medium Clouds (% Sky Obscured)

100
89
96
86
43
67
46
21
46
98
97
96
95
90
93
96
94
92
91
86
81
77
74
70

High Clouds (% Sky Obscured)

97
80
30
49
20
34
40
19
40
45
28
49
4
3
7
17
15
16
14
29
29
29
25
21

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
3
2
3
3
4
6
7
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
Very Light Rain
None
None
None
None
Very Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Very Light Rain
Very Light Rain
Very Light Rain
None
None
None

Precipitation Probability (%)

9
29
40
50
53
51
44
47
57
88
95
95
94
95
95
95
93
81
68
63
53
36
36
28

Precipitation Amount (mm)

0
0
0
0.3
0
0
0
0
0.3
1.1
1.3
0.6
0.6
0.8
0.8
0.5
0.5
0.4
0.3
0.3
0.2
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

16
15
14
13
13
13
13
12
12
12
11
12
12
12
11
11
11
11
11
11
11
11
11
11

Feels Like (°C)

16
16
14
13
11
13
12
12
12
11
10
10
11
11
10
10
10
9
9
8
10
10
10
10

Dew Point (°C)

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

Relative Humidity (%)

67
73
78
79
89
96
95
95
93
95
98
96
96
96
96
95
95
91
90
88
87
86
86
84

Pressure (mb)

1009
1009
1010
1010
1011
1012
1012
1011
1011
1012
1012
1013
1014
1014
1014
1015
1016
1016
1017
1017
1017
1017
1017
1018

Ozone (du)

334
332
331
331
331
334
334
334
334
334
336
338
337
339
345
351
356
357
358
358
358
358
357
356

Friday 5

Waning Gibbous 72%

01:04

10:54

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
18 Bad

Sun - Rise: 05:28, Set: 21:16, Transit: 13:23. Moon - Rise: 01:04, Set: 10:54. Civil Dark: 21:56 - 04:49. Nautical Dark: 22:49 - 03:55. Astro Dark: 00:08 - 02:36

Total Clouds (% Sky Obscured)

92
93
92
88
79
70
64
69
74
76
66
56
52
56
65
65
71
68
69
76
88
100
100
100

Low Clouds (% Sky Obscured)

29
36
40
41
37
31
27
26
24
22
19
15
13
14
15
16
11
6
2
8
14
17
12
11

Medium Clouds (% Sky Obscured)

76
69
61
56
43
29
13
22
33
41
23
14
7
24
45
65
71
68
69
76
88
85
74
59

High Clouds (% Sky Obscured)

22
33
30
40
40
40
40
32
29
29
39
56
52
56
65
65
71
68
64
69
78
99
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
None
None
None
None
None
None
None
None

Precipitation Probability (%)

15
21
16
1
2
1
0
0
0
0
0
0
0
0
0
0
2
5
6
19
30
37
50
53

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

Chance of Frost

Temperature (°C)

11
11
11
10
10
10
9
9
9
8
7
9
10
11
13
14
15
17
17
18
18
18
17
16

Feels Like (°C)

10
10
11
11
12
12
11
11
8
8
8
7
7
7
14
14
14
14
14
14
19
17
16
16

Dew Point (°C)

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

Relative Humidity (%)

84
84
87
90
93
93
93
95
95
95
93
91
87
84
77
70
65
60
56
52
51
52
52
59

Pressure (mb)

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

Ozone (du)

355
354
354
354
355
357
360
362
361
361
360
360
359
359
358
357
356
355
353
352
351
351
350
349

Saturday 6

Waning Gibbous 63%

01:23

12:04

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

Sun - Rise: 05:28, Set: 21:17, Transit: 13:23. Moon - Rise: 01:23, Set: 12:04. Civil Dark: 21:57 - 04:48. Nautical Dark: 22:51 - 03:54. Astro Dark: 00:10 - 02:34

Total Clouds (% Sky Obscured)

100
99
97
96
96
96
96
95
95
94
94
93
93
82
73
63
62
61
64

Low Clouds (% Sky Obscured)

10
12
14
16
18
20
25
30
35
37
40
43
43
43
37
35
29
23
17

Medium Clouds (% Sky Obscured)

54
46
30
24
29
34
42
46
49
51
58
63
70
62
42
17
12
7
2

High Clouds (% Sky Obscured)

100
99
95
86
68
51
45
45
49
69
79
80
85
68
50
33
29
28
22

ISS Passover

Visibility (miles)

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

Precipitation Type

None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

50
44
35
21
17
13
6
14
14
8
12
12
1
3
3
1
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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

16
15
14
14
12
13
12
12
12
11
11
12
13
13
15
16
17
18
18

Feels Like (°C)

17
18
14
14
14
15
14
13
11
11
12
11
11
10
15
15
14
15
15

Dew Point (°C)

10
11
11
11
11
11
10
10
10
10
10
10
10
10
10
10
9
9
8

Relative Humidity (%)

67
76
80
84
89
90
90
92
90
90
92
87
84
80
73
66
61
55
49

Pressure (mb)

1020
1021
1021
1021
1022
1022
1022
1022
1022
1022
1022
1022
1022
1022
1022
1021
1021
1021
1020

Ozone (du)

349
348
347
347
346
347
347
347
347
347
347
349
350
351
352
352
352
352
351

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

Generated: 31/05/26 19:37:25. Forecast: 31/05/26 to 06/06/26. Timezone: UTC+2.00