Clear Outside v1.0 - International Weather Forecasts For Astronomers

Monday 25

Waxing Gibbous 73%

15:12

02:51

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

Sun - Rise: 04:18, Set: 22:18, Transit: 13:19. Moon - Rise: 15:12, Set: 02:51. Civil Dark: 23:34 - 03:01. Nautical Dark: N/A - N/A. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

5
19
16
41
100
64
42
22
0
0
2
0
6
0
32
7
0
0
0
0
0
0
39
48

Low Clouds (% Sky Obscured)

5
19
16
27
26
18
29
22
0
0
0
0
0
0
0
0
0
0
0
0
0
0
35
48

Medium Clouds (% Sky Obscured)

5
10
5
7
22
55
24
0
0
0
2
0
6
0
24
7
0
0
0
0
0
0
39
48

High Clouds (% Sky Obscured)

5
1
16
20
100
15
4
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
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
1

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)

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

Chance of Frost

Temperature (°C)

16
17
17
17
16
16
16
15
14
13
12
11
10
9
9
8
8
8
8
10
12
13
15
16

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

36
32
31
31
31
33
34
38
41
44
47
53
58
59
63
68
69
71
71
66
54
45
39
36

Pressure (mb)

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

Ozone (du)

348
351
351
355
360
368
374
374
373
373
368
369
369
370
371
374
380
382
386
385
383
383
385
385

Tuesday 26

Waxing Gibbous 82%

16:39

02:50

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

Sun - Rise: 04:17, Set: 22:20, Transit: 13:19. Moon - Rise: 16:39, Set: 02:50. Civil Dark: 23:37 - 02:58. Nautical Dark: N/A - N/A. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

76
82
75
56
49
66
54
55
96
72
100
86
100
73
4
34
16
42
100
93
89
100
90
94

Low Clouds (% Sky Obscured)

50
60
54
40
46
46
38
18
5
0
0
33
0
8
4
27
16
33
52
71
48
100
66
69

Medium Clouds (% Sky Obscured)

53
41
44
24
0
7
13
44
94
63
100
68
100
73
1
7
1
21
99
80
74
97
65
69

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
1
15
8
10
0
1
0
0
0
2
2
1
0
37
45

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
Very Light Rain
None
Light Rain
Very Light Rain
None

Precipitation Probability (%)

9
17
25
11
3
2
0
0
1
0
0
0
0
0
1
0
4
9
40
56
50
69
62
48

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
0.4
0.3
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

16
17
16
17
17
17
16
15
13
12
11
11
10
9
8
8
7
7
8
8
8
9
10
12

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

34
34
40
33
32
33
38
46
53
54
60
65
66
70
74
77
79
81
78
77
88
77
67
43

Pressure (mb)

1010
1009
1009
1008
1007
1007
1007
1006
1006
1006
1005
1005
1005
1004
1004
1003
1003
1003
1002
1002
1002
1002
1002
1002

Ozone (du)

388
390
390
392
392
393
394
394
395
394
394
396
397
399
399
400
400
401
400
399
400
400
400
400

Wednesday 27

Waxing Gibbous 89%

18:06

02:50

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
07 Bad
08 Bad
09 Bad
10 Bad
11 Bad

Sun - Rise: 04:15, Set: 22:22, Transit: 13:19. Moon - Rise: 18:06, Set: 02:50. Civil Dark: 23:41 - 02:55. Nautical Dark: N/A - N/A. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

100
100
100
97
99
95
79
75
99
91
76
99
95
92
92
81
100
100
100
93
100
99
98
97

Low Clouds (% Sky Obscured)

74
65
60
44
53
29
0
0
0
0
0
28
48
25
0
0
53
5
28
72
67
59
50
41

Medium Clouds (% Sky Obscured)

94
100
100
95
93
87
79
43
93
88
76
85
87
69
61
74
79
99
84
75
89
90
92
90

High Clouds (% Sky Obscured)

24
79
62
8
17
19
24
49
67
13
5
68
13
29
68
25
100
97
96
54
100
77
44
42

ISS Passover

Visibility (miles)

9
8
9
6
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

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

Precipitation Probability (%)

62
54
59
48
24
7
1
0
0
0
1
0
1
3
1
0
0
0
0
4
16
13
13
5

Precipitation Amount (mm)

0.4
0
0.4
0.3
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

37
46
60
49
40
31
33
35
37
41
42
43
44
46
48
46
45
44
45
45
45
43
43
40

Pressure (mb)

1002
1003
1003
1003
1003
1003
1004
1004
1005
1005
1005
1005
1005
1005
1005
1005
1005
1005
1005
1005
1006
1006
1006
1006

Ozone (du)

399
396
393
392
390
390
391
392
391
390
389
389
388
387
387
386
387
386
385
387
389
393
399
400

Thursday 28

Waxing Gibbous 94%

19:36

02:51

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 OK
07 OK
08 Good
09 OK
10 Bad
11 Bad

Sun - Rise: 04:13, Set: 22:24, Transit: 13:19. Moon - Rise: 19:36, Set: 02:51. Civil Dark: 23:44 - 02:51. Nautical Dark: N/A - N/A. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

97
96
96
95
94
93
94
94
95
90
85
81
75
68
62
63
61
62
42
21
4
35
70
100

Low Clouds (% Sky Obscured)

57
72
87
78
68
58
50
42
34
36
37
37
25
12
0
5
10
15
10
5
1
10
33
52

Medium Clouds (% Sky Obscured)

94
86
92
88
83
78
81
85
88
79
65
54
54
52
49
50
44
42
28
12
2
34
68
79

High Clouds (% Sky Obscured)

42
18
21
41
54
58
61
62
52
32
17
10
17
7
1
1
1
1
1
0
3
31
68
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 (%)

20
26
32
34
34
32
28
20
6
10
7
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)

15
17
16
16
15
15
14
13
12
12
10
9
7
8
8
8
7
7
8
8
10
11
12
13

Chance of Frost

Temperature (°C)

11
12
11
12
12
11
11
11
11
10
10
9
8
7
7
7
7
7
7
9
10
11
13
14

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

38
34
37
31
29
32
34
36
39
43
45
48
52
55
57
53
53
54
53
51
45
43
37
34

Pressure (mb)

1007
1007
1007
1008
1008
1009
1009
1009
1010
1010
1010
1010
1011
1011
1011
1011
1011
1011
1011
1012
1012
1012
1012
1012

Ozone (du)

399
396
394
394
391
388
386
385
385
385
387
388
391
392
393
393
392
390
389
387
387
385
384
383

Friday 29

Waxing Gibbous 98%

21:08

02:54

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

Sun - Rise: 04:11, Set: 22:26, Transit: 13:19. Moon - Rise: 21:08, Set: 02:54. Civil Dark: 23:47 - 02:48. Nautical Dark: N/A - N/A. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

100
100
100
98
97
86
59
42
24
17
12
9
1
15
30
62
72
82
82
86
92
94
96
97

Low Clouds (% Sky Obscured)

39
29
20
15
15
11
10
15
23
15
8
0
0
0
0
0
0
0
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

62
51
55
65
85
46
34
23
13
9
4
0
0
10
25
25
26
18
28
44
61
72
84
90

High Clouds (% Sky Obscured)

98
97
95
86
76
63
42
21
1
0
0
0
1
4
5
30
49
62
49
67
74
82
84
83

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 (%)

3
3
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)

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

Chance of Frost

Temperature (°C)

14
15
15
16
16
16
16
15
14
13
10
9
9
8
7
7
7
7
7
8
10
12
13
14

Feels Like (°C)

9
9
10
11
10
11
11
11
11
11
9
6
5
5
4
4
3
4
4
4
5
5
10
10

Dew Point (°C)

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

Relative Humidity (%)

32
30
27
25
25
25
27
30
34
39
48
52
56
61
64
63
61
58
56
52
48
45
43
40

Pressure (mb)

1012
1011
1011
1011
1011
1011
1011
1011
1012
1012
1012
1012
1012
1012
1012
1012
1011
1011
1011
1011
1011
1011
1011
1011

Ozone (du)

381
381
380
378
377
378
378
379
378
378
378
379
378
378
380
381
382
382
383
377
370
363
361
360

Saturday 30

Waxing Gibbous 100%

22:40

03:02

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
07 Bad
08 Bad
09 Bad
10 Bad
11 OK

Sun - Rise: 04:10, Set: 22:28, Transit: 13:20. Moon - Rise: 22:40, Set: 03:02. Civil Dark: 23:51 - 02:45. Nautical Dark: N/A - N/A. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

95
90
85
83
83
82
75
72
71
85
90
95
90
90
81
58
48
56
63
70
67
66
49
48

Low Clouds (% Sky Obscured)

17
35
50
30
16
1
0
0
0
0
0
0
20
39
49
41
39
50
42
28
6
12
17
23

Medium Clouds (% Sky Obscured)

90
90
85
83
80
78
75
72
71
75
75
75
73
75
68
58
48
31
11
6
1
20
42
48

High Clouds (% Sky Obscured)

85
89
85
65
40
14
43
71
71
85
90
95
83
82
75
58
48
56
63
49
21
22
23
28

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 (%)

1
2
2
2
2
0
11
15
13
21
18
4
7
5
1
11
13
14
10
6
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)

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

Chance of Frost

Temperature (°C)

15
16
17
18
18
18
18
17
15
14
13
11
10
9
9
8
8
9
9
10
12
13
14
15

Feels Like (°C)

10
10
10
11
15
15
15
15
15
16
12
12
12
11
11
10
7
7
6
7
6
6
11
11

Dew Point (°C)

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

Relative Humidity (%)

37
35
33
32
31
29
28
35
44
55
58
59
62
63
64
64
64
64
65
57
51
44
41
37

Pressure (mb)

1011
1011
1010
1010
1010
1010
1010
1010
1010
1010
1010
1010
1010
1010
1011
1011
1011
1011
1012
1012
1012
1012
1012
1012

Ozone (du)

358
356
355
353
354
354
355
357
359
362
360
358
357
357
358
358
359
360
361
362
363
364
366
367

Sunday 31

Full Moon 100%

00:05

03:21

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
07 Bad
08 Bad

Sun - Rise: 04:08, Set: 22:29, Transit: 13:20. Moon - Rise: 00:05, Set: 03:21. Civil Dark: 23:54 - 02:42. Nautical Dark: N/A - N/A. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

50
51
53
63
75
89
92
96
99
99
100
100
100
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

27
44
53
58
56
52
38
30
22
17
8
7
27
48
68
67
64
61
70
80
89

Medium Clouds (% Sky Obscured)

50
51
53
60
40
17
22
26
31
34
28
25
50
81
100
100
100
100
100
100
100

High Clouds (% Sky Obscured)

26
27
27
43
61
77
83
89
94
96
98
100
100
100
100
100
100
100
97
93
90

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
8
8
7
7
6
4
2

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

Precipitation Probability (%)

2
3
2
5
8
14
19
22
22
16
15
17
23
24
24
41
56
66
75
79
85

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

1
2
3
3
5
6
8
8
8
9
8
8
8
8
9
10
10
10
10
10
11

Relative Humidity (%)

35
37
39
41
45
49
55
59
66
72
75
79
83
85
90
95
96
96
98
96
98

Pressure (mb)

1013
1013
1013
1013
1012
1012
1012
1012
1012
1013
1012
1012
1012
1012
1012
1012
1012
1011
1011
1011
1010

Ozone (du)

369
370
371
371
369
367
365
363
361
360
358
357
356
356
356
356
356
357
357
357
357

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

Generated: 25/05/26 12:23:40. Forecast: 25/05/26 to 31/05/26. Timezone: UTC+3.00