Clear Outside v1.0 - International Weather Forecasts For Astronomers

Monday 20

Waxing Crescent 13%

05:47

03:07

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

Sun - Rise: 05:48, Set: 20:53, Transit: 13:21. Moon - Rise: 05:47, Set: 03:07. Civil Dark: 21:42 - 04:57. Nautical Dark: 22:49 - 03:48. Astro Dark: 01:02 - N/A

Total Clouds (% Sky Obscured)

8
23
28
29
9
3
4
4
2
2
1
2
2
2
12
21
17
8
7
5
4
4
3
0

Low 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

Medium Clouds (% Sky Obscured)

8
21
4
7
4
2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

8
16
15
10
1
0
1
1
1
1
1
1
1
1
12
21
16
6
4
1
1
1
1
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
6
5
5
7
7
8
8
7
7
6
6
5
6
5
4
3
4
4
4
4
3
4
4

Chance of Frost

Temperature (°C)

-0
0
1
3
5
7
9
10
11
12
12
13
12
12
11
9
7
6
5
5
4
4
3
3

Feels Like (°C)

-3
-3
-3
-1
2
4
6
7
8
9
9
10
10
10
10
8
6
4
4
3
3
3
2
1

Dew Point (°C)

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

Relative Humidity (%)

52
55
56
50
41
36
30
27
27
25
24
24
25
27
31
36
45
47
48
51
51
52
53
55

Pressure (mb)

1027
1027
1027
1028
1028
1028
1028
1028
1027
1027
1027
1026
1026
1026
1025
1026
1026
1026
1026
1026
1027
1027
1027
1026

Ozone (du)

413
415
417
420
417
415
414
413
413
412
413
411
411
413
415
414
415
415
415
414
410
406
402
398

Tuesday 21

Waxing Crescent 23%

06:16

04:09

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

Sun - Rise: 05:45, Set: 20:56, Transit: 13:21. Moon - Rise: 06:16, Set: 04:09. Civil Dark: 21:45 - 04:53. Nautical Dark: 22:53 - 03:43. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

0
2
0
0
0
3
43
8
12
15
13
6
29
2
9
91
83
55
49
4
1
1
0
2

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
10
15
13
0
0
0
0
0
0
0
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
1
7
0
0
0
0
0
0
55
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

0
1
0
0
0
3
43
8
5
1
1
1
6
0
9
81
83
55
49
4
1
1
0
2

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)

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

Chance of Frost

Temperature (°C)

3
2
3
6
8
10
12
13
14
14
15
15
15
15
14
12
10
9
8
8
7
6
5
5

Feels Like (°C)

1
1
2
5
7
8
10
11
11
12
13
13
13
11
12
12
8
6
5
5
4
5
4
4

Dew Point (°C)

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

Relative Humidity (%)

57
58
55
48
40
35
30
28
28
28
27
27
27
28
31
39
44
46
52
58
64
67
70
68

Pressure (mb)

1026
1026
1025
1025
1025
1025
1024
1023
1023
1022
1021
1020
1020
1019
1019
1019
1019
1019
1019
1018
1018
1018
1017
1016

Ozone (du)

395
392
391
387
386
390
395
395
393
392
393
394
396
398
397
394
395
397
399
398
400
400
403
400

Wednesday 22

Waxing Crescent 34%

07:31

04:31

05 OK
06 OK
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 OK
00 Good
01 Good
02 Good
03 Good
04 Good

Sun - Rise: 05:43, Set: 20:58, Transit: 13:20. Moon - Rise: 07:31, Set: 04:31. Civil Dark: 21:47 - 04:50. Nautical Dark: 22:57 - 03:39. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

24
22
56
99
100
100
100
100
100
100
100
100
63
100
100
94
78
51
21
0
0
0
0
0

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
2
35
26
27
63
66
62
50
49
48
20
0
0
0
0
0

Medium Clouds (% Sky Obscured)

0
0
0
23
57
85
99
100
79
62
0
0
0
16
58
34
48
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

24
22
56
97
100
100
100
100
100
100
100
71
0
75
80
65
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
1
6
19
3
2
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)

4
5
6
8
9
10
11
12
13
14
14
14
14
15
14
13
12
12
12
14
14
14
14
14

Chance of Frost

Temperature (°C)

4
4
5
6
8
9
10
10
11
12
12
12
11
11
10
9
7
6
5
5
4
3
2
2

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

68
67
65
63
60
54
46
49
49
50
47
53
58
56
57
45
39
41
45
50
52
55
58
59

Pressure (mb)

1016
1015
1014
1013
1013
1012
1010
1009
1008
1007
1006
1005
1005
1004
1005
1005
1006
1006
1007
1007
1008
1008
1008
1008

Ozone (du)

400
399
397
394
391
390
388
387
389
390
393
398
403
410
426
441
446
451
453
451
454
457
463
470

Thursday 23

Waxing Crescent 45%

09:17

04:39

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

Sun - Rise: 05:40, Set: 21:01, Transit: 13:20. Moon - Rise: 09:17, 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)

0
15
31
46
55
63
71
69
67
65
56
47
38
39
39
40
56
69
85
87
89
91
92
100

Low Clouds (% Sky Obscured)

0
15
31
46
49
51
53
51
49
46
39
32
24
16
8
0
1
1
0
0
2
1
12
23

Medium Clouds (% Sky Obscured)

0
0
0
0
11
23
35
36
34
33
29
24
19
24
27
30
28
24
21
14
6
0
17
33

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
1
2
3
26
49
72
81
89
90
90
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 (%)

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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

60
62
61
59
56
52
47
44
46
46
42
35
35
36
38
42
46
46
49
52
55
58
63
67

Pressure (mb)

1009
1009
1010
1010
1010
1010
1010
1010
1010
1010
1010
1010
1010
1010
1010
1010
1010
1010
1009
1009
1009
1009
1008
1008

Ozone (du)

466
461
456
455
458
465
464
461
459
455
451
447
444
441
437
433
429
424
423
421
418
413
406
401

Friday 24

First Quarter 57%

11:07

04:41

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
00 Bad
01 Bad
02 Bad
03 Bad
04 Bad

Sun - Rise: 05:37, Set: 21:03, Transit: 13:20. Moon - Rise: 11:07, 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)

92
87
77
74
84
81
75
81
87
93
98
99
98
100
100
97
100
100
100
91
67
44
55
69

Low Clouds (% Sky Obscured)

34
35
34
35
45
49
51
54
57
61
65
69
73
63
52
42
56
63
65
59
49
35
34
37

Medium Clouds (% Sky Obscured)

55
55
55
55
51
42
33
42
51
66
67
67
67
75
100
92
88
86
79
56
36
27
27
35

High Clouds (% Sky Obscured)

92
87
77
74
64
32
1
31
58
86
91
97
96
100
99
97
78
56
35
24
11
0
2
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 (%)

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
2
3
0
4
4
2
5
5
3
5
7
9
9
6
3
51
37
21
19
20
22
24
23

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

Chance of Frost

Temperature (°C)

2
2
3
4
6
7
8
9
10
11
12
12
12
11
9
7
6
5
5
4
4
4
3
3

Feels Like (°C)

-3
-2
-1
1
3
3
4
6
7
9
10
10
10
8
5
4
3
3
3
3
2
3
2
1

Dew Point (°C)

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

Relative Humidity (%)

69
72
70
67
61
55
52
50
47
43
40
38
39
41
49
57
59
62
66
69
71
72
73
77

Pressure (mb)

1007
1007
1006
1006
1005
1005
1005
1004
1004
1003
1003
1002
1002
1001
1001
1001
1001
1002
1001
1001
1000
999
998
998

Ozone (du)

398
396
395
392
388
386
385
385
384
383
382
383
382
380
379
377
376
377
377
377
380
383
386
389

Saturday 25

Waxing Gibbous 68%

12:51

04:42

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
00 Bad
01 Bad
02 Bad
03 Bad
04 Bad

Sun - Rise: 05:34, Set: 21:06, Transit: 13:20. Moon - Rise: 12:51, 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)

83
80
79
86
91
95
97
98
99
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

32
46
59
73
81
89
81
85
92
99
96
93
90
91
91
91
80
65
60
61
61
77
68
56

Medium Clouds (% Sky Obscured)

40
40
53
57
61
67
67
78
89
100
100
100
99
97
96
95
95
97
99
100
100
100
100
100

High Clouds (% Sky Obscured)

4
9
2
1
0
0
0
0
0
5
5
8
26
29
22
18
24
23
30
30
35
40
40
40

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

Precipitation Probability (%)

20
32
41
49
51
55
58
67
76
87
87
87
88
84
70
48
42
33
18
16
10
3
4
3

Precipitation Amount (mm)

0
0
0
0.2
0.2
0.3
0.3
0.4
0.6
0.8
0.7
0.6
0.6
0.6
0.3
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

5
4
4
4
4
4
5
7
8
10
11
11
12
12
12
11
10
11
11
12
12
12
12
12

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

83
89
83
75
68
66
64
63
62
59
58
58
56
56
59
61
65
72
79
86
85
81
80
80

Pressure (mb)

997
996
995
995
994
994
993
993
993
993
992
993
993
994
994
994
995
995
995
996
996
997
997
998

Ozone (du)

393
396
397
398
398
398
398
398
400
403
405
408
411
414
414
415
416
417
419
421
421
421
422
424

Sunday 26

Waxing Gibbous 77%

14:27

04:41

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 OK
22 OK
23 Good
00 Good
01 Good
02 Good

Sun - Rise: 05:31, Set: 21:08, Transit: 13:20. Moon - Rise: 14:27, 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)

100
100
100
100
89
75
56
57
58
59
73
86
100
85
68
52
41
27
11
7
4
0

Low Clouds (% Sky Obscured)

43
54
61
67
66
50
38
31
23
21
24
17
20
20
35
52
41
27
11
7
4
0

Medium Clouds (% Sky Obscured)

100
97
93
90
89
75
56
57
58
59
73
86
100
85
68
52
41
27
11
7
4
0

High Clouds (% Sky Obscured)

40
33
27
26
18
13
13
10
7
4
5
6
7
5
2
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

Fog (%)

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

Precipitation Probability (%)

1
2
2
1
15
7
3
7
9
9
9
10
10
9
8
8
5
2
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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

80
81
77
73
70
68
65
64
63
63
62
62
63
63
64
65
67
66
69
71
71
73

Pressure (mb)

998
999
999
1000
1000
1001
1001
1002
1002
1003
1004
1004
1005
1006
1006
1007
1008
1008
1009
1009
1010
1011

Ozone (du)

426
428
429
431
432
433
434
435
438
440
443
447
452
456
457
459
460
461
462
463
464
465

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

Generated: 20/04/26 05:03:04. Forecast: 20/04/26 to 26/04/26. Timezone: UTC+3.00