Clear Outside v1.0 - International Weather Forecasts For Astronomers

Tuesday 21

Waxing Crescent 23%

06:16

04:09

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

1
1
0
0
0
0
0
0
1
2
1
4
31
2
1
2
3
8
11
20
6
1
0
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)

0
0
0
0
0
0
0
0
0
0
0
0
8
0
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

1
0
0
0
0
0
0
0
1
1
1
3
25
1
1
1
1
2
3
8
2
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

0
-0
1
4
6
8
10
11
11
12
12
13
12
12
12
11
8
8
7
6
5
5
5
4

Dew Point (°C)

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

Relative Humidity (%)

55
55
52
45
40
34
30
27
27
28
28
28
28
28
33
39
46
50
52
55
60
65
67
71

Pressure (mb)

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

Ozone (du)

399
396
394
393
394
396
398
399
397
397
397
398
398
400
401
398
396
395
398
402
402
404
408
411

Wednesday 22

Waxing Crescent 34%

07:31

04:31

05 Good
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 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)

3
100
91
100
100
100
100
100
100
100
64
62
100
100
72
75
73
72
45
1
0
0
0
0

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
43
44
63
45
52
32
59
46
45
0
0
0
0
0

Medium Clouds (% Sky Obscured)

0
0
75
75
66
100
100
100
69
50
64
62
70
85
72
54
59
59
0
0
0
0
0
0

High Clouds (% Sky Obscured)

1
100
91
100
100
100
100
100
100
100
64
62
90
90
72
5
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
1
4
3
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
10
11
12
12
13
13
14
14
13
11
13
13
11
10
10
10
10
10
10
9

Chance of Frost

Temperature (°C)

5
4
5
7
8
9
10
10
11
12
13
13
13
12
12
11
9
8
7
6
5
4
3
2

Feels Like (°C)

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

Dew Point (°C)

-0
-1
-0
0
1
0
-1
-2
-2
-1
-1
-2
-1
0
1
0
0
0
-2
-5
-7
-8
-8
-8

Relative Humidity (%)

71
69
67
63
61
55
47
43
42
42
40
37
38
45
47
49
52
56
50
45
44
44
46
50

Pressure (mb)

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

Ozone (du)

407
402
401
397
394
390
387
387
387
386
387
390
395
399
405
408
408
408
412
420
423
427
429
432

Thursday 23

Waxing Crescent 45%

09:17

04:39

05 Good
06 Good
07 Good
08 Good
09 OK
10 OK
11 OK
12 OK
13 Bad
14 Bad
15 Bad
16 Bad
17 Bad
18 OK
19 Bad
20 Bad
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
0
0
15
15
39
34
36
49
79
67
64
49
27
100
100
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

0
0
0
1
0
23
22
22
3
4
5
5
5
5
5
5
22
5
19
0
28
52
55
58

Medium Clouds (% Sky Obscured)

0
0
0
11
11
19
26
19
29
46
36
41
28
14
61
66
70
73
81
86
86
84
80
76

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
2
27
16
30
30
27
100
100
92
81
81
100
98
100
99
98

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
1
2

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)

9
8
8
10
10
11
11
11
11
11
11
11
10
10
9
9
8
7
7
6
6
7
7
7

Chance of Frost

Temperature (°C)

1
0
1
2
3
4
5
6
7
8
9
10
10
10
9
8
6
5
4
3
3
3
3
3

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

53
54
54
52
50
42
38
35
34
32
30
28
29
31
34
37
42
47
52
56
63
67
67
69

Pressure (mb)

1010
1011
1011
1011
1011
1011
1011
1011
1010
1010
1010
1009
1009
1008
1008
1008
1008
1008
1008
1007
1007
1007
1006
1006

Ozone (du)

435
440
446
445
439
436
432
427
423
422
422
421
421
421
420
418
416
415
412
409
408
405
403
400

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 OK
03 OK
04 OK

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)

100
96
92
88
79
70
61
74
87
100
100
100
100
100
100
100
100
100
100
70
37
7
14
10

Low Clouds (% Sky Obscured)

61
40
20
0
14
28
42
45
48
51
49
47
43
51
60
69
73
76
87
60
31
5
4
3

Medium Clouds (% Sky Obscured)

68
49
25
1
11
22
33
54
70
89
91
89
86
91
99
100
100
99
93
70
25
2
1
1

High Clouds (% Sky Obscured)

86
96
92
88
79
62
41
46
48
95
92
91
100
75
47
20
15
15
14
1
1
1
10
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 (%)

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
1
0
0
0
0
0
0
0
2
3
2
11
15
18
27
34
41
42
43
42
35
26

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

Chance of Frost

Temperature (°C)

3
3
4
5
6
8
9
10
11
11
11
11
11
11
10
8
7
6
5
4
4
3
2
1

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

72
76
72
65
58
50
45
41
37
32
31
30
30
32
34
42
45
47
51
58
66
79
84
89

Pressure (mb)

1006
1006
1006
1006
1006
1006
1006
1006
1006
1005
1005
1004
1004
1004
1003
1003
1003
1002
1002
1002
1001
1001
1001
1000

Ozone (du)

397
394
391
389
386
385
384
384
382
380
380
381
381
381
379
375
378
381
384
387
388
391
393
398

Saturday 25

Waxing Gibbous 68%

12:51

04:42

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 OK
22 OK
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)

15
43
71
62
94
97
100
100
100
100
100
100
100
83
69
62
0
0
5
30
70
84
87
86

Low Clouds (% Sky Obscured)

15
20
5
7
25
43
72
67
55
52
49
42
37
34
31
28
0
0
5
30
53
68
65
58

Medium Clouds (% Sky Obscured)

15
43
71
45
53
56
100
100
98
100
100
100
100
83
66
49
0
0
5
30
70
60
62
54

High Clouds (% Sky Obscured)

10
5
5
1
5
5
10
10
15
15
10
5
2
5
5
5
0
0
5
5
0
0
5
5

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
4
9
9
9
6
3
0
3
6
9
6

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

Precipitation Probability (%)

1
1
2
1
27
39
49
48
45
39
38
42
57
54
38
28
28
31
32
28
22
7
13
13

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

89
83
79
71
59
51
51
53
61
55
51
45
56
83
86
88
89
89
91
94
89
86
81
84

Pressure (mb)

1000
999
999
999
999
999
998
998
998
998
997
997
998
998
998
999
999
1002
1002
1003
1003
1004
1004
1005

Ozone (du)

399
404
402
401
403
405
408
410
413
415
416
417
421
423
423
423
422
421
421
420
420
421
421
423

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 Bad
22 Bad
23 Bad
00 Bad
01 Bad
02 Bad
03 Bad
04 Bad

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)

80
65
55
25
34
41
57
71
87
100
92
87
83
86
88
86
87
87
86
91
95
99
99
99

Low Clouds (% Sky Obscured)

60
55
50
25
30
15
50
63
66
68
70
67
68
60
55
50
44
37
48
55
61
85
90
90

Medium Clouds (% Sky Obscured)

50
50
35
25
34
41
57
71
85
99
82
65
52
50
35
14
6
4
4
5
6
7
13
15

High Clouds (% Sky Obscured)

5
15
5
5
0
0
0
0
0
4
3
3
1
0
0
0
0
0
0
0
0
0
0
0

ISS Passover

Visibility (miles)

3
0
0
0
0
0
0
0
3
6
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 (%)

11
22
25
27
28
27
23
24
23
11
14
11
4
6
8
3
5
3
1
12
9
2
13
7

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-3
-3
-3
-2
-1
-1
-1
-1
-1
-1
0
3
2
2
2
2
2
-2
-3
-3
-4
-4
-4
-7

Dew Point (°C)

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

Relative Humidity (%)

87
91
92
96
98
94
94
91
83
75
67
67
66
66
67
69
72
73
74
75
75
75
74
74

Pressure (mb)

1005
1006
1007
1007
1008
1009
1009
1010
1011
1011
1012
1012
1013
1014
1014
1015
1015
1016
1016
1017
1017
1018
1018
1018

Ozone (du)

426
429
430
431
433
435
438
440
441
441
442
442
443
443
443
443
443
444
445
445
445
444
444
443

Monday 27

Waxing Gibbous 86%

15:57

04:40

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 OK
00 OK
01 OK
02 OK

Sun - Rise: 05:28, Set: 21:11, Transit: 13:20. Moon - Rise: 15:57, 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)

98
95
86
79
76
82
91
78
67
56
60
64
72
74
79
80
65
53
38
37
36
36

Low Clouds (% Sky Obscured)

90
90
86
79
76
69
74
61
50
40
38
41
40
33
21
11
10
10
10
11
13
14

Medium Clouds (% Sky Obscured)

17
14
12
10
9
7
7
1
0
0
0
3
7
11
27
47
41
36
24
17
9
0

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

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 (%)

2
10
10
4
12
15
18
21
24
26
30
32
31
28
23
12
11
9
4
7
6
11

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)

9
9
9
9
9
10
11
11
11
11
10
10
9
8
8
6
6
5
5
4
4
4

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

74
74
71
69
67
59
53
48
43
38
34
33
34
35
39
44
49
54
57
62
67
71

Pressure (mb)

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

Ozone (du)

443
442
440
438
435
433
430
427
425
423
421
420
420
419
419
418
418
418
417
417
417
417

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

Generated: 21/04/26 05:51:43. Forecast: 21/04/26 to 27/04/26. Timezone: UTC+3.00