Clear Outside v1.0 - International Weather Forecasts For Astronomers

Monday 7

Waning Crescent 18%

No Rise

19:31

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

Sun - Rise: 06:32, Set: 20:08, Transit: 13:20. Moon - Rise: No Rise, Set: 19:31. Civil Dark: 20:52 - 05:48. Nautical Dark: 21:47 - 04:53. Astro Dark: 22:53 - 03:46

Total Clouds (% Sky Obscured)

0
0
0
0
0
2
3
4
45
50
66
73
56
36
15
79
41
49
81
96
95
98
98
97

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
42
44
66
69
55
28
11
72
31
31
36
32
49
68
75
92

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
4
9
19
76
93
85
94
94
87

High Clouds (% Sky Obscured)

0
0
0
0
0
2
3
4
19
15
8
36
19
32
5
10
7
6
6
5
3
6
9
46

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

Chance of Frost

Temperature (°C)

8
6
5
4
4
3
3
3
5
9
11
12
13
15
15
16
16
16
16
15
14
14
14
14

Feels Like (°C)

7
5
4
4
3
2
3
2
6
8
11
12
12
14
13
14
15
15
15
14
13
13
13
13

Dew Point (°C)

5
3
2
2
1
1
0
0
1
2
2
3
4
5
5
6
7
7
9
11
12
12
12
13

Relative Humidity (%)

82
82
79
82
82
82
82
79
72
61
53
52
52
51
49
49
53
56
63
77
83
87
87
90

Pressure (mb)

1014
1015
1016
1016
1016
1017
1017
1017
1017
1018
1018
1018
1017
1017
1017
1017
1016
1016
1016
1015
1015
1014
1014
1013

Ozone (du)

338
335
330
327
325
321
317
316
316
314
313
311
309
308
308
307
307
307
307
308
308
307
307
305

Tuesday 8

Waning Crescent 10%

01:46

19:35

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
22 Bad
23 Bad

Sun - Rise: 06:34, Set: 20:05, Transit: 13:20. Moon - Rise: 01:46, Set: 19:35. Civil Dark: 20:48 - 05:51. Nautical Dark: 21:43 - 04:56. Astro Dark: 22:49 - 03:50

Total Clouds (% Sky Obscured)

94
93
95
88
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

67
69
63
71
74
80
78
77
79
85
70
87
87
82
78
98
85
63
99
71
99
69
79
62

Medium Clouds (% Sky Obscured)

64
49
69
25
29
40
87
84
98
100
90
95
95
94
99
96
100
100
94
91
95
98
100
89

High Clouds (% Sky Obscured)

5
29
61
61
100
100
100
100
100
100
100
100
99
100
100
100
100
69
100
92
100
100
100
100

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
2
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
Very Light Rain
Very Light Rain
None
Light Rain
None
Light Rain
Very Light Rain
None
Light Rain
Light Rain
Light Rain
Light Rain
None
None
Very Light Rain
None

Precipitation Probability (%)

10
16
1
0
1
5
3
16
47
55
50
64
37
95
72
47
54
95
95
71
35
27
52
46

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0.2
0.3
0
0.5
0
0.9
0.3
0
0.4
1
1.2
0.4
0
0
0.3
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

15
15
14
14
14
14
14
15
15
16
16
16
16
16
15
15
16
15
15
15
15
15
15
15

Feels Like (°C)

13
14
13
13
12
13
12
13
13
14
14
14
14
14
14
13
13
13
13
13
14
14
13
14

Dew Point (°C)

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

Relative Humidity (%)

90
90
92
92
92
90
89
87
87
87
92
89
90
85
83
82
79
79
78
75
86
92
87
85

Pressure (mb)

1013
1013
1012
1012
1011
1010
1010
1010
1009
1009
1008
1008
1007
1007
1007
1006
1006
1006
1005
1005
1005
1004
1004
1003

Ozone (du)

301
297
296
296
295
295
294
294
293
292
294
292
291
289
289
290
290
290
289
288
291
293
293
293

Wednesday 9

Waning Crescent 4%

03:36

19:36

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
22 Bad
23 Bad

Sun - Rise: 06:37, Set: 20:02, Transit: 13:19. Moon - Rise: 03:36, Set: 19:36. Civil Dark: 20:45 - 05:53. Nautical Dark: 21:39 - 04:59. Astro Dark: 22:44 - 03:55

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
99
95
87
82
99
89
94
97
100
99
99
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

52
76
77
73
77
78
74
84
80
70
66
61
78
48
55
42
52
47
24
36
40
40
39
38

Medium Clouds (% Sky Obscured)

86
95
92
83
77
93
69
63
64
56
46
27
56
76
89
58
52
50
60
98
100
57
68
55

High Clouds (% Sky Obscured)

100
100
100
98
83
89
34
23
42
42
97
28
84
86
100
97
94
100
100
100
100
100
100
41

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

Precipitation Probability (%)

50
42
50
84
68
36
50
86
95
95
45
19
19
9
8
3
2
4
5
7
9
10
13
8

Precipitation Amount (mm)

0
0
0
0.5
0.2
0
0
0.5
2.4
1.9
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

15
15
15
15
15
15
15
15
15
15
15
16
17
17
18
18
18
17
17
16
14
14
14
13

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

86
87
85
86
92
93
92
87
89
84
75
68
65
67
65
63
61
66
72
78
89
95
96
96

Pressure (mb)

1003
1002
1002
1002
1001
1001
1001
1001
1001
1001
1001
1002
1002
1002
1002
1003
1003
1003
1003
1003
1003
1004
1004
1004

Ozone (du)

293
292
291
292
292
292
292
292
293
295
296
296
293
293
291
293
293
294
295
296
298
299
302
305

Thursday 10

Waning Crescent 1%

05:20

19:36

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
22 Bad
23 Bad

Sun - Rise: 06:39, Set: 19:59, Transit: 13:19. Moon - Rise: 05:20, Set: 19:36. Civil Dark: 20:42 - 05:56. Nautical Dark: 21:36 - 05:02. Astro Dark: 22:39 - 03:59

Total Clouds (% Sky Obscured)

74
96
100
99
99
98
91
85
77
80
83
86
85
85
85
78
68
63
58
59
55
69
79
58

Low Clouds (% Sky Obscured)

43
53
61
62
56
46
55
65
66
76
56
60
51
77
77
67
45
48
43
55
30
37
45
51

Medium Clouds (% Sky Obscured)

3
5
3
55
55
55
55
50
45
50
57
65
62
62
59
51
34
35
27
40
39
53
68
52

High Clouds (% Sky Obscured)

45
86
100
99
99
98
89
72
60
55
55
50
55
55
55
50
0
0
3
52
52
58
40
55

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
5
9
6
7
6
2
9
9
8
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
Very Light Rain
None
Very Light Rain
Very Light Rain
None
Very Light Rain
Very Light Rain
None
None
None
Very Light Rain

Precipitation Probability (%)

6
7
8
9
18
32
38
14
30
30
28
45
44
65
50
52
59
55
75
65
34
38
52
62

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0.3
0
0.2
0.3
0
0.3
0.3
0
0
0
0.3

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

96
96
96
96
96
98
98
95
90
84
83
80
79
82
87
89
79
78
85
92
86
92
93
90

Pressure (mb)

1004
1004
1004
1004
1004
1004
1004
1004
1004
1004
1004
1004
1004
1004
1004
1004
1004
1004
1004
1004
1004
1004
1004
1004

Ozone (du)

309
310
312
314
314
314
314
315
315
317
316
318
319
321
327
333
332
329
328
330
337
345
350
353

Friday 11

New Moon 0%

06:58

19:36

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
22 Bad
23 Bad

Sun - Rise: 06:41, Set: 19:56, Transit: 13:18. Moon - Rise: 06:58, Set: 19:36. Civil Dark: 20:39 - 05:58. Nautical Dark: 21:32 - 05:05. Astro Dark: 22:34 - 04:02

Total Clouds (% Sky Obscured)

59
53
70
100
100
94
100
84
99
100
91
89
85
91
99
93
90
88
94
98
100
99
97
96

Low Clouds (% Sky Obscured)

57
53
68
88
89
76
91
53
60
48
64
67
55
63
78
65
52
50
48
42
38
32
30
27

Medium Clouds (% Sky Obscured)

52
52
60
93
55
58
59
59
92
76
69
55
58
58
59
60
66
63
69
75
86
86
82
78

High Clouds (% Sky Obscured)

55
53
55
55
65
64
52
48
95
91
33
22
33
46
60
53
56
53
69
79
90
83
83
77

ISS Passover

Visibility (miles)

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

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

Precipitation Probability (%)

88
90
95
91
89
54
72
83
60
69
69
68
72
78
78
89
77
64
49
37
23
24
19
4

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

10
10
9
11
11
10
10
10
10
10
10
11
9
9
10
11
11
11
10
10
10
10
9
9

Relative Humidity (%)

93
93
88
96
96
96
95
93
89
89
84
80
70
68
73
82
80
80
78
81
86
91
91
91

Pressure (mb)

1003
1003
1003
1002
1002
1003
1004
1004
1005
1006
1006
1007
1007
1008
1009
1009
1010
1010
1011
1011
1012
1012
1013
1013

Ozone (du)

356
357
356
356
353
351
351
352
352
352
352
350
344
340
334
330
330
329
328
328
328
328
328
328

Saturday 12

Waxing Crescent 2%

08:33

19:35

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
22 Bad
23 Bad

Sun - Rise: 06:44, Set: 19:53, Transit: 13:18. Moon - Rise: 08:33, Set: 19:35. Civil Dark: 20:35 - 06:01. Nautical Dark: 21:29 - 05:08. Astro Dark: 22:30 - 04:06

Total Clouds (% Sky Obscured)

93
89
86
85
84
83
74
66
57
50
44
41
53
65
78
74
72
68
79
89
100
99
98
98

Low Clouds (% Sky Obscured)

24
29
38
45
49
51
48
44
41
42
44
41
48
47
45
40
35
29
38
48
52
61
65
70

Medium Clouds (% Sky Obscured)

66
53
42
37
32
27
29
23
15
10
6
2
10
15
22
16
13
11
18
21
32
32
36
36

High Clouds (% Sky Obscured)

67
70
74
51
17
8
6
6
2
18
35
41
53
43
37
37
37
31
50
75
99
97
95
92

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
Very Light Rain
Light Rain
Light Rain

Precipitation Probability (%)

9
8
7
14
19
12
24
24
14
29
36
37
41
38
26
25
18
6
9
15
29
62
85
95

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.3
0.5
0.8

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

10
10
9
9
9
9
9
10
10
11
12
14
15
15
16
16
16
16
15
15
14
13
13
13

Feels Like (°C)

9
9
8
8
8
8
8
8
8
7
12
13
13
13
13
14
16
15
14
14
15
15
11
11

Dew Point (°C)

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

Relative Humidity (%)

93
93
95
95
96
96
96
93
90
87
83
78
73
69
66
62
65
70
75
82
90
98
92
83

Pressure (mb)

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

Ozone (du)

328
328
327
327
327
326
325
325
324
324
321
319
317
315
313
310
309
308
308
307
306
306
306
305

Sunday 13

Waxing Crescent 7%

10:06

19:35

Sun - Rise: 06:46, Set: 19:50, Transit: 13:18. Moon - Rise: 10:06, Set: 19:35. Civil Dark: 20:32 - 06:03. Nautical Dark: 21:25 - 05:10. Astro Dark: 22:26 - 04:10

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: 06/09/26 23:33:08. Forecast: 07/09/26 to 13/09/26. Timezone: UTC+3.00