Clear Outside v1.0 - International Weather Forecasts For Astronomers

Thursday 23

Waxing Crescent 45%

11:07

04:39

19 Bad
20 Bad
21 Bad
22 OK
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: 05:37, Set: 21:01, Transit: 13:20. Moon - Rise: 11:07, Set: 04:39. Civil Dark: 21:50 - 04:47. Nautical Dark: 23:02 - 03:34. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

66
63
78
47
100
90
100
98
100
100
91
100
75
75
83
100
98
84
76
63
65
60
59
66

Low Clouds (% Sky Obscured)

0
33
37
20
0
0
15
44
39
42
1
0
44
30
0
10
9
5
2
2
35
30
30
30

Medium Clouds (% Sky Obscured)

66
54
17
40
92
43
33
32
40
22
2
2
2
0
2
2
2
23
43
6
30
3
8
27

High Clouds (% Sky Obscured)

66
63
63
17
100
81
100
84
100
100
90
100
47
52
77
100
94
60
20
29
15
12
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)

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

Chance of Frost

Temperature (°C)

9
8
5
5
5
4
3
3
2
2
2
1
2
4
7
8
9
10
10
11
11
11
11
11

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

32
39
46
52
57
62
68
73
74
77
80
83
80
71
60
50
43
39
35
30
29
31
33
33

Pressure (mb)

1009
1008
1008
1008
1008
1007
1007
1007
1006
1006
1006
1006
1006
1006
1007
1007
1007
1007
1007
1007
1007
1007
1007
1006

Ozone (du)

389
389
387
386
385
382
381
380
379
376
374
373
374
374
373
372
373
373
373
374
373
374
374
375

Friday 24

First Quarter 57%

12:51

04:41

19 Bad
20 Bad
21 OK
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: 05:34, Set: 21:03, Transit: 13:20. Moon - Rise: 12:51, Set: 04:41. Civil Dark: 21:53 - 04:43. Nautical Dark: 23:06 - 03:29. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

50
50
42
75
95
97
96
99
90
100
100
100
100
100
100
100
100
100
100
100
100
100
100
99

Low Clouds (% Sky Obscured)

29
30
22
2
6
16
72
83
81
76
72
58
65
54
58
75
72
55
82
85
96
88
57
52

Medium Clouds (% Sky Obscured)

36
46
42
75
93
90
91
97
74
68
99
100
100
100
100
100
100
100
100
100
100
100
100
98

High Clouds (% Sky Obscured)

0
1
2
0
1
48
1
10
0
64
89
100
82
100
100
100
100
35
35
40
45
45
45
30

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
6
4
2
0

Fog (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
0
0
0
0

Precipitation Type

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

Precipitation Probability (%)

0
0
0
0
0
0
1
26
39
30
22
6
2
0
1
6
9
18
35
66
94
95
95
95

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0.1
0
0
0
0
0
0
0
0
0
0
0.2
0.5
0.9
1.1
0.9

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

35
41
47
50
54
56
58
61
66
73
73
75
75
71
64
57
52
53
53
58
70
84
91
94

Pressure (mb)

1005
1005
1005
1005
1005
1004
1004
1003
1002
1001
1000
999
998
997
996
996
995
994
993
992
992
991
991
990

Ozone (du)

376
377
378
380
380
381
384
385
388
392
393
396
400
401
403
404
407
412
412
412
411
409
409
409

Saturday 25

Waxing Gibbous 68%

14:27

04:42

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: 05:31, Set: 21:06, Transit: 13:20. Moon - Rise: 14:27, Set: 04:42. Civil Dark: 21:56 - 04:40. Nautical Dark: 23:10 - 03:24. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

99
96
99
100
100
100
100
100
100
100
90
100
99
100
97
97
100
100
100
97
90
82
74
50

Low Clouds (% Sky Obscured)

73
82
70
78
81
91
93
93
88
74
71
66
59
23
15
30
37
27
36
40
27
13
0
0

Medium Clouds (% Sky Obscured)

97
95
97
100
100
100
100
100
100
100
88
100
99
100
91
74
81
86
85
80
74
69
60
42

High Clouds (% Sky Obscured)

25
20
20
25
30
35
35
40
35
35
30
25
20
8
3
1
1
1
0
1
1
1
1
0

ISS Passover

Visibility (miles)

0
0
0
0
0
0
0
0
3
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9

Fog (%)

0
0
1
1
0
0
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
Snow
Snow
Snow
Snow
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

89
88
95
95
95
95
95
94
71
41
17
13
5
1
0
0
1
1
1
1
1
1
0
0

Precipitation Amount (mm)

0.6
0.6
0.8
1.1
0.9
1.1
1
0.6
0.3
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

5
4
4
5
11
14
15
16
17
18
19
18
18
18
18
18
19
20
18
17
17
18
17
17

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

94
96
96
96
96
96
96
94
84
66
64
64
61
61
60
59
56
53
48
42
44
47
48
48

Pressure (mb)

990
989
989
989
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008

Ozone (du)

411
412
414
415
416
416
417
418
420
422
427
429
429
430
432
435
440
444
446
444
442
440
440
441

Sunday 26

Waxing Gibbous 77%

15:57

04:41

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

Sun - Rise: 05:28, Set: 21:08, Transit: 13:20. Moon - Rise: 15:57, Set: 04:41. Civil Dark: 21:59 - 04:37. Nautical Dark: 23:15 - 03:19. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

25
0
0
0
0
0
0
0
0
0
0
0
0
0
17
32
48
47
54
53
51
49
50
24

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
9
16
26
22
31
36
37
29
18
1

Medium Clouds (% Sky Obscured)

21
0
0
0
0
0
0
0
0
0
0
0
0
0
10
19
28
28
25
30
45
49
50
17

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
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
None
None
None

Precipitation Probability (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
0
1
2
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
14
14
13
13
12
12
12
12
11
11
11
11
12
12
13
14
15
15
15
15
14
14
14

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

47
48
56
60
59
60
60
60
63
62
61
61
59
56
52
47
37
35
32
29
30
31
33
35

Pressure (mb)

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

Ozone (du)

444
447
447
448
446
443
445
446
446
447
447
447
447
447
446
444
442
442
442
442
444
447
449
450

Monday 27

Waxing Gibbous 86%

17:25

04:40

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

Sun - Rise: 05:26, Set: 21:11, Transit: 13:19. Moon - Rise: 17:25, Set: 04:40. Civil Dark: 22:02 - 04:33. Nautical Dark: 23:20 - 03:14. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

12
2
2
3
5
2
1
2
0
0
0
0
1
2
26
52
78
77
85
94
97
99
100
90

Low Clouds (% Sky Obscured)

1
1
1
1
1
0
0
0
0
0
0
0
0
0
9
14
19
33
49
71
67
59
60
45

Medium Clouds (% Sky Obscured)

8
0
0
0
0
0
1
2
0
0
0
0
0
0
25
50
74
76
83
85
75
68
65
48

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
2
2
10

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
None
None
None

Precipitation Probability (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
2
2
1
1
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

39
43
47
50
51
52
54
56
57
58
59
61
60
57
53
54
55
57
53
49
45
44
43
42

Pressure (mb)

1014
1014
1014
1014
1014
1014
1014
1013
1013
1013
1013
1013
1013
1013
1013
1015
1015
1015
1014
1014
1014
1014
1014
1014

Ozone (du)

455
462
465
466
467
468
468
467
466
466
466
466
466
467
466
464
462
461
458
456
453
452
450
449

Tuesday 28

Waxing Gibbous 92%

18:53

04:39

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

Sun - Rise: 05:23, Set: 21:13, Transit: 13:19. Moon - Rise: 18:53, Set: 04:39. Civil Dark: 22:05 - 04:30. Nautical Dark: 23:25 - 03:09. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

76
39
26
15
9
9
9
8
6
5
6
13
20
26
48
70
93
95
98
100
100
100
100
99

Low Clouds (% Sky Obscured)

32
19
10
3
3
4
5
5
4
4
3
3
3
3
24
41
66
80
90
99
98
98
97
95

Medium Clouds (% Sky Obscured)

36
16
13
11
8
5
3
0
0
0
0
7
13
19
34
50
65
64
63
63
49
33
18
31

High Clouds (% Sky Obscured)

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

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
None
None
None

Precipitation Probability (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
3
4
3
8
11
12
12
12
11
10

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

45
48
51
54
58
63
65
68
69
71
73
75
70
66
62
61
60
59
57
55
54
54
55
55

Pressure (mb)

1015
1015
1015
1015
1015
1015
1015
1015
1015
1015
1015
1015
1015
1015
1015
1015
1016
1016
1016
1016
1016
1017
1017
1017

Ozone (du)

448
447
446
448
449
451
450
450
449
450
450
451
446
442
438
434
430
426
425
425
424
424
425
426

Wednesday 29

Waxing Gibbous 97%

18:53

04:39

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

Sun - Rise: 05:20, Set: 21:16, Transit: 13:19. Moon - Rise: 18:53, Set: 04:39. Civil Dark: 22:09 - 04:27. Nautical Dark: 23:30 - 03:03. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

96
93
90
89
89
91
94
96
96
95
95
90
86
81
81
85
90
93
96
100

Low Clouds (% Sky Obscured)

90
86
79
71
70
73
77
80
76
73
70
71
67
55
47
39
32
31
34
36

Medium Clouds (% Sky Obscured)

44
57
48
38
29
20
14
8
6
9
13
13
14
1
15
33
49
61
69
78

High Clouds (% Sky Obscured)

2
1
1
1
2
31
64
96
67
33
0
0
0
0
0
0
0
2
4
7

ISS Passover

Visibility (miles)

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

Precipitation Type

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

Precipitation Probability (%)

10
12
10
8
6
13
18
22
23
23
27
25
21
14
11
8
0
1
1
0

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

5
4
3
3
2
1
1
1
0
0
-0
-1
2
3
5
6
7
9
9
10

Feels Like (°C)

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

Dew Point (°C)

-2
-2
-2
-2
-2
-2
-2
-2
-2
-2
-2
-2
-2
-3
-4
-4
-4
-4
-6
-6

Relative Humidity (%)

60
64
70
74
77
80
83
84
88
86
87
89
76
64
55
49
43
39
34
31

Pressure (mb)

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

Ozone (du)

426
426
426
425
423
422
421
420
419
420
420
420
420
420
420
420
420
420
421
423

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

Generated: 23/04/26 19:31:24. Forecast: 23/04/26 to 29/04/26. Timezone: UTC+3.00