Clear Outside v1.0 - International Weather Forecasts For Astronomers

Tuesday 25

Waxing Gibbous 95%

20:28

03:06

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

Sun - Rise: 06:03, Set: 20:47, Transit: 13:24. Moon - Rise: 20:28, Set: 03:06. Civil Dark: 21:34 - 05:16. Nautical Dark: 22:38 - 04:13. Astro Dark: 00:16 - 02:40

Total Clouds (% Sky Obscured)

24
31
48
41
45
55
68
57
70
43
18
39
47
47
17
28
68
78
76
79
65
64
76
72

Low Clouds (% Sky Obscured)

24
31
31
41
37
55
68
42
29
32
5
35
37
47
12
4
15
36
26
33
10
19
35
40

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
31
37
20
0
0
0
0
0
13
28
33
63
35
28
26
39
38

High Clouds (% Sky Obscured)

0
3
3
6
36
0
0
3
5
7
18
11
31
26
5
4
41
32
8
3
6
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
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)

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

Chance of Frost

Temperature (°C)

10
11
13
14
16
17
17
17
18
18
18
18
17
16
14
13
12
12
12
12
12
12
11
11

Feels Like (°C)

10
11
12
14
15
14
16
16
17
17
17
16
17
16
13
13
12
10
11
11
11
11
10
10

Dew Point (°C)

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

Relative Humidity (%)

91
81
69
60
54
50
45
43
41
40
40
42
50
63
64
70
73
70
70
70
71
72
76
79

Pressure (mb)

1018
1018
1018
1019
1019
1019
1019
1019
1020
1020
1020
1020
1021
1021
1021
1022
1022
1022
1023
1023
1023
1023
1024
1024

Ozone (du)

332
331
329
329
329
330
331
329
328
327
324
323
323
323
323
322
321
321
321
322
321
320
319
319

Wednesday 26

Waxing Gibbous 98%

20:30

04:40

07 Bad
08 Bad
09 Bad
10 Bad
11 Good
12 OK
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
04 Bad
05 Bad
06 Bad

Sun - Rise: 06:06, Set: 20:44, Transit: 13:24. Moon - Rise: 20:30, Set: 04:40. Civil Dark: 21:31 - 05:19. Nautical Dark: 22:34 - 04:17. Astro Dark: 00:07 - 02:48

Total Clouds (% Sky Obscured)

87
77
68
62
18
30
69
70
94
88
59
64
72
62
63
67
72
79
85
88
88
86
77
77

Low Clouds (% Sky Obscured)

61
54
43
53
18
30
50
62
60
64
45
45
58
40
40
35
39
48
53
56
55
38
28
27

Medium Clouds (% Sky Obscured)

44
25
22
2
0
28
5
4
52
45
19
27
26
23
23
23
20
24
27
34
36
39
40
44

High Clouds (% Sky Obscured)

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

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

11
13
14
16
18
20
20
18
19
19
19
19
19
17
16
14
13
13
12
12
12
12
12
12

Dew Point (°C)

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

Relative Humidity (%)

80
80
79
77
61
48
42
42
42
42
42
55
68
71
69
67
66
67
66
66
67
66
69
72

Pressure (mb)

1024
1024
1025
1025
1025
1025
1025
1025
1025
1025
1025
1025
1026
1026
1026
1026
1026
1027
1027
1027
1027
1027
1027
1027

Ozone (du)

318
317
316
313
311
310
309
308
308
309
311
311
310
310
310
311
311
310
309
307
309
310
311
311

Thursday 27

Waxing Gibbous 100%

20:30

06:11

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
04 Bad
05 Bad
06 Bad

Sun - Rise: 06:08, Set: 20:41, Transit: 13:23. Moon - Rise: 20:30, Set: 06:11. Civil Dark: 21:28 - 05:22. Nautical Dark: 22:30 - 04:20. Astro Dark: 23:59 - 02:55

Total Clouds (% Sky Obscured)

78
82
87
85
88
97
91
93
82
77
91
95
84
86
91
95
100
93
84
77
83
91
98
96

Low Clouds (% Sky Obscured)

36
31
48
47
64
58
60
56
53
47
35
40
40
45
40
40
35
35
30
24
20
29
40
39

Medium Clouds (% Sky Obscured)

43
42
41
39
35
54
45
35
21
19
28
25
19
15
14
16
16
21
28
31
34
37
40
39

High Clouds (% Sky Obscured)

6
6
6
16
58
49
43
50
51
51
64
68
57
60
66
71
70
62
57
53
61
68
76
76

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
1
0
0
0
2
3
2
3

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

Chance of Frost

Temperature (°C)

12
14
16
18
19
20
20
20
20
20
20
19
18
16
14
14
13
12
12
12
11
12
12
12

Feels Like (°C)

12
14
16
18
18
18
19
18
18
18
19
19
17
16
14
13
13
12
12
11
11
12
11
12

Dew Point (°C)

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

Relative Humidity (%)

75
69
62
60
55
51
47
45
47
56
63
70
76
77
76
78
79
80
83
83
83
84
86
89

Pressure (mb)

1027
1028
1028
1028
1028
1028
1028
1028
1028
1027
1027
1027
1027
1027
1027
1027
1027
1027
1027
1027
1027
1027
1026
1026

Ozone (du)

312
312
313
312
312
312
312
313
313
313
313
313
313
315
315
317
316
316
315
316
317
317
316
316

Friday 28

Full Moon 99%

20:29

No Set

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
04 Bad
05 Bad
06 Bad

Sun - Rise: 06:10, Set: 20:38, Transit: 13:23. Moon - Rise: 20:29, Set: No Set. Civil Dark: 21:24 - 05:25. Nautical Dark: 22:26 - 04:24. Astro Dark: 23:52 - 03:01

Total Clouds (% Sky Obscured)

95
92
91
89
100
98
96
92
76
71
75
73
76
85
88
81
91
73
56
77
83
88
93
96

Low Clouds (% Sky Obscured)

41
41
48
50
72
77
69
55
30
28
40
35
40
47
46
64
75
57
51
39
40
22
18
19

Medium Clouds (% Sky Obscured)

43
47
53
61
69
66
58
56
50
45
37
39
41
44
41
35
30
23
16
9
12
17
21
16

High Clouds (% Sky Obscured)

66
47
32
17
50
55
19
3
0
0
2
6
8
33
41
14
39
30
5
45
63
77
83
91

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 (%)

4
2
9
14
13
23
22
21
19
15
7
8
8
9
16
17
14
14
10
4
8
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)

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

Chance of Frost

Temperature (°C)

13
14
16
17
18
18
18
18
19
19
19
18
17
16
14
14
14
14
14
14
14
14
14
14

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

87
82
72
63
58
57
59
59
57
55
57
64
69
79
89
92
87
87
89
89
92
90
90
89

Pressure (mb)

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

Ozone (du)

314
313
314
313
312
311
309
308
307
304
303
303
301
299
298
299
298
298
296
294
295
294
294
293

Saturday 29

Waning Gibbous 96%

20:29

07:42

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
04 Bad
05 Bad
06 Bad

Sun - Rise: 06:13, Set: 20:35, Transit: 13:23. Moon - Rise: 20:29, Set: 07:42. Civil Dark: 21:21 - 05:27. Nautical Dark: 22:22 - 04:27. Astro Dark: 23:45 - 03:07

Total Clouds (% Sky Obscured)

84
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
97
95
92
88
83
79
70

Low Clouds (% Sky Obscured)

3
0
0
0
0
0
0
2
13
24
28
39
53
66
79
89
100
87
75
65
61
57
54
52

Medium Clouds (% Sky Obscured)

11
6
24
42
55
60
69
100
100
100
100
100
100
100
98
95
94
78
67
53
50
47
45
24

High Clouds (% Sky Obscured)

54
100
100
100
100
100
100
100
100
100
100
92
85
81
75
64
48
45
52
60
62
41
48
48

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
1
5
8
11
20
25
26
25
20
10
8
6
3
6
9
9
12

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
9
10
11
12
13
12
11
11
10
9
9
8
8
7
7
7
7
7
6
5
5
4
4

Chance of Frost

Temperature (°C)

14
15
16
17
18
18
19
19
19
19
19
18
18
17
16
16
16
16
15
15
15
15
15
14

Feels Like (°C)

13
14
14
14
15
15
15
16
17
17
16
17
16
16
15
14
14
14
15
15
15
13
14
14

Dew Point (°C)

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

Relative Humidity (%)

84
75
69
64
61
57
55
59
53
56
58
61
63
65
68
69
72
72
77
79
84
86
89
90

Pressure (mb)

1017
1017
1016
1016
1016
1016
1015
1015
1014
1014
1014
1013
1013
1013
1013
1013
1013
1012
1012
1012
1012
1012
1012
1012

Ozone (du)

293
293
292
292
292
291
292
291
292
292
293
293
293
294
294
294
294
293
294
294
295
295
294
294

Sunday 30

Waning Gibbous 91%

20:28

09:14

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
04 Bad
05 Bad
06 Bad

Sun - Rise: 06:15, Set: 20:32, Transit: 13:22. Moon - Rise: 20:28, Set: 09:14. Civil Dark: 21:18 - 05:30. Nautical Dark: 22:18 - 04:31. Astro Dark: 23:38 - 03:13

Total Clouds (% Sky Obscured)

62
53
57
60
65
77
88
100
89
80
71
72
72
73
71
69
67
77
88
100
100
100
100
96

Low Clouds (% Sky Obscured)

51
50
57
60
65
75
75
69
69
69
71
66
61
61
67
69
67
77
88
97
93
90
85
75

Medium Clouds (% Sky Obscured)

23
32
37
44
50
60
65
65
70
70
70
70
72
70
70
65
65
75
75
75
70
55
40
33

High Clouds (% Sky Obscured)

62
53
57
60
65
77
85
100
82
60
30
32
40
54
46
37
32
57
78
99
99
100
100
84

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
8
6
5
3
2
1
0
3
6
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
Very Light Rain
Very Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
None
None
None
None

Precipitation Probability (%)

15
18
21
23
26
29
30
28
40
48
51
50
55
56
66
71
73
71
72
74
46
26
6
4

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0.2
0
0
0
0.3
0.3
0.4
0.4
0.4
0.5
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

15
15
16
17
17
18
18
18
18
18
17
17
16
15
14
14
14
14
14
14
14
14
14
14

Feels Like (°C)

14
14
15
17
17
17
18
18
18
18
18
18
17
16
15
14
14
14
14
14
14
15
15
16

Dew Point (°C)

13
14
14
15
15
16
16
17
17
17
16
16
15
15
14
14
14
14
14
14
14
14
14
14

Relative Humidity (%)

89
89
87
87
89
89
90
89
89
92
92
95
96
98
98
98
98
100
98
98
100
98
98
98

Pressure (mb)

1011
1011
1011
1011
1011
1011
1011
1011
1011
1010
1010
1010
1010
1010
1009
1009
1009
1009
1009
1008
1008
1008
1008
1008

Ozone (du)

294
295
295
296
296
297
298
298
299
299
300
300
300
299
299
299
298
298
299
300
301
301
302
302

Monday 31

Waning Gibbous 84%

20:28

10:48

Sun - Rise: 06:18, Set: 20:29, Transit: 13:22. Moon - Rise: 20:28, Set: 10:48. Civil Dark: 21:14 - 05:33. Nautical Dark: 22:14 - 04:34. Astro Dark: 23:32 - 03:18

Total Clouds (% Sky Obscured)

Low Clouds (% Sky Obscured)

Medium Clouds (% Sky Obscured)

High Clouds (% Sky Obscured)

ISS Passover

Visibility (miles)

Fog (%)

Precipitation Type

Precipitation Probability (%)

Precipitation Amount (mm)

Wind Speed/Direction (mph)

Chance of Frost

Temperature (°C)

Feels Like (°C)

Dew Point (°C)

Relative Humidity (%)

Pressure (mb)

Ozone (du)

Forecast for Vols, Helsinki, Finland (60.17,24.39)

Generated: 25/08/26 07:23:09. Forecast: 25/08/26 to 31/08/26. Timezone: UTC+3.00