Clear Outside v1.0 - International Weather Forecasts For Astronomers

Friday 17

New Moon 0%

05:47

20:18

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

Sun - Rise: 06:03, Set: 19:36, Transit: 12:49. Moon - Rise: 05:47, Set: 20:18. Civil Dark: 20:06 - 05:33. Nautical Dark: 20:42 - 04:55. Astro Dark: 21:21 - 04:16

Total Clouds (% Sky Obscured)

100
100
100
100
85
84
82
81
69
69
67
38
53
32
24
34
34
36
29
36
59
54
65
91

Low Clouds (% Sky Obscured)

82
71
61
75
68
71
59
49
47
56
42
28
38
20
22
34
34
36
29
36
59
54
65
91

Medium Clouds (% Sky Obscured)

71
35
31
46
38
47
62
61
41
48
53
1
0
0
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

100
100
100
0
0
0
31
57
29
9
43
27
0
0
0
0
0
0
0
0
0
5
26
38

ISS Passover

Visibility (miles)

9
9
7
8
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
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 (%)

10
21
0
39
37
34
36
29
14
19
7
16
1
1
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
4
4
5
4
5
6
7
8
9
9
7
5
2
1
2
2
2
2
2
2
2
1
1

Chance of Frost

Temperature (°C)

16
16
16
16
17
17
17
18
18
19
19
19
19
19
18
15
14
13
13
12
11
11
10
10

Feels Like (°C)

16
16
16
17
17
17
17
17
17
17
17
18
18
19
18
17
15
14
14
13
11
11
11
10

Dew Point (°C)

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

Relative Humidity (%)

95
95
93
95
95
90
93
89
81
76
76
77
78
80
81
87
89
93
95
93
93
95
95
95

Pressure (mb)

1007
1008
1008
1009
1010
1011
1012
1012
1013
1013
1013
1013
1014
1014
1015
1016
1017
1018
1018
1018
1018
1018
1018
1019

Ozone (du)

321
321
322
325
325
331
335
334
333
334
335
331
330
330
332
332
329
328
325
322
324
328
330
335

Saturday 18

Waxing Crescent 2%

06:16

21:41

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: 06:01, Set: 19:37, Transit: 12:49. Moon - Rise: 06:16, Set: 21:41. Civil Dark: 20:07 - 05:31. Nautical Dark: 20:43 - 04:53. Astro Dark: 21:22 - 04:14

Total Clouds (% Sky Obscured)

100
100
84
84
85
87
86
81
85
92
92
91
96
98
93
94
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

100
100
72
80
80
86
86
81
85
91
88
91
93
92
88
85
90
97
97
96
99
100
100
100

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
28
12
58
66
85
100
93
74
78
97
100

High Clouds (% Sky Obscured)

65
9
12
13
15
45
54
61
32
64
66
53
76
77
60
65
100
77
100
100
100
100
100
100

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
7
9
9
9
9
9
9
9
9
9
9
9
9
9
6
2
3

Fog (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
74

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
None
Very Light Rain
Light Rain

Precipitation Probability (%)

0
0
3
0
19
13
3
7
12
1
1
0
0
0
0
0
0
7
47
55
29
46
62
95

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
0.3
0.9

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

96
91
90
87
84
84
89
86
79
77
74
67
68
68
74
81
87
87
90
90
95
95
96
96

Pressure (mb)

1019
1020
1020
1020
1020
1020
1019
1018
1017
1017
1016
1015
1014
1014
1014
1014
1014
1014
1013
1013
1011
1011
1010
1009

Ozone (du)

335
338
338
333
329
324
321
323
325
327
325
326
327
329
328
324
325
326
326
324
322
322
321
321

Sunday 19

Waxing Crescent 8%

06:53

23:03

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 OK
19 Bad
20 OK
21 Good
22 Good
23 Good
00 Good
01 Good
02 Good
03 Good
04 OK

Sun - Rise: 06:00, Set: 19:38, Transit: 12:49. Moon - Rise: 06:53, Set: 23:03. Civil Dark: 20:08 - 05:30. Nautical Dark: 20:45 - 04:51. Astro Dark: 21:24 - 04:12

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
100
100
77
22
52
18
3
0
0
5
7
5
7
8

Low Clouds (% Sky Obscured)

100
98
100
99
92
85
91
84
83
86
83
83
77
5
0
0
0
0
0
3
5
5
7
8

Medium Clouds (% Sky Obscured)

97
100
100
100
100
100
93
100
100
100
100
30
48
22
12
18
3
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
100
100
2
0
31
0
0
0
0
0
0
0
0
0

ISS Passover

Visibility (miles)

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

Fog (%)

74
65
60
52
42
11
0
0
11
0
70
16
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Type

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

Precipitation Probability (%)

70
95
95
95
95
95
71
73
66
63
54
61
41
12
5
2
2
0
0
2
0
1
1
1

Precipitation Amount (mm)

0
0.9
0.6
1.2
1.9
1.5
0.3
0.3
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

96
98
96
98
91
87
90
90
91
88
87
84
88
84
79
79
82
80
77
82
85
91
91
93

Pressure (mb)

1008
1008
1008
1008
1008
1009
1009
1010
1009
1010
1010
1010
1011
1011
1012
1013
1014
1015
1016
1016
1017
1017
1017
1018

Ozone (du)

321
322
323
324
323
320
320
319
320
320
322
324
328
334
338
340
348
354
358
367
383
389
398
402

Monday 20

Waxing Crescent 16%

07:40

00:18

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

Sun - Rise: 05:58, Set: 19:39, Transit: 12:49. Moon - Rise: 07:40, Set: 00:18. Civil Dark: 20:09 - 05:28. Nautical Dark: 20:46 - 04:49. Astro Dark: 21:26 - 04:10

Total Clouds (% Sky Obscured)

9
14
22
62
42
34
60
97
100
100
100
100
86
69
43
19
8
1
1
0
0
0
0
0

Low Clouds (% Sky Obscured)

9
13
20
60
37
26
52
97
100
98
95
90
86
69
43
9
3
1
1
0
0
0
0
0

Medium Clouds (% Sky Obscured)

0
0
0
7
10
18
24
32
40
40
50
56
51
29
11
8
4
0
0
0
0
0
0
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
0
0

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
5
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 (%)

6
7
3
4
7
4
10
14
11
22
26
26
30
20
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

91
88
78
61
47
39
33
30
30
32
35
35
46
53
59
68
71
73
72
71
68
68
68
67

Pressure (mb)

1018
1019
1020
1021
1022
1022
1022
1022
1022
1022
1022
1022
1023
1024
1025
1026
1027
1027
1028
1028
1029
1029
1029
1029

Ozone (du)

405
407
410
410
411
415
413
412
411
413
413
413
417
430
434
435
438
439
440
440
428
418
415
415

Tuesday 21

Waxing Crescent 26%

08:39

01:19

05 Good
06 Good
07 Good
08 Good
09 Good
10 Good
11 Good
12 Good
13 Good
14 OK
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: 05:56, Set: 19:40, Transit: 12:48. Moon - Rise: 08:39, Set: 01:19. Civil Dark: 20:11 - 05:26. Nautical Dark: 20:48 - 04:48. Astro Dark: 21:27 - 04:08

Total Clouds (% Sky Obscured)

1
2
0
0
2
2
4
16
16
43
61
67
47
48
50
61
78
87
81
72
69
71
78
85

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
1
0
14
23
23
22
21
23
30
33
36
45
56

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
1
24
31
47
35
44
48
51
53
55
45
35
27
21
16
18

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
9
8
15
25
14
9
2
2
19
34
49
51
49
54
64
78
84

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
8

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
1
10
15
19
17
14
6
15
22
27

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)

1
1
0
1
3
4
6
7
9
10
11
11
11
11
11
10
10
10
10
9
8
7
5
4

Chance of Frost

Temperature (°C)

-4
-3
-1
1
4
5
7
9
10
11
11
12
12
11
9
8
7
6
4
4
4
4
4
4

Feels Like (°C)

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

Dew Point (°C)

-9
-8
-8
-10
-12
-12
-11
-11
-10
-8
-7
-6
-4
-3
-3
-3
-3
-3
-3
-2
-2
-2
-1
1

Relative Humidity (%)

66
65
57
42
32
27
25
24
24
25
27
28
34
38
44
46
50
55
60
63
66
68
75
82

Pressure (mb)

1029
1030
1030
1030
1029
1028
1027
1026
1024
1023
1021
1020
1019
1018
1018
1018
1018
1018
1017
1016
1016
1015
1015
1015

Ozone (du)

415
413
413
410
406
404
401
399
398
398
393
392
389
386
384
381
382
383
384
385
386
387
388
389

Wednesday 22

Waxing Crescent 37%

09:50

02:07

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: 05:55, Set: 19:42, Transit: 12:48. Moon - Rise: 09:50, Set: 02:07. Civil Dark: 20:12 - 05:25. Nautical Dark: 20:49 - 04:46. Astro Dark: 21:29 - 04:06

Total Clouds (% Sky Obscured)

79
78
79
81
82
84
79
73
67
69
71
72
59
72
65
71
66
66
73
78
89
90
91
93

Low Clouds (% Sky Obscured)

47
38
32
52
71
84
79
69
62
51
41
31
25
19
14
21
28
35
23
11
0
0
0
0

Medium Clouds (% Sky Obscured)

20
10
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
5
11
16

High Clouds (% Sky Obscured)

56
39
18
7
5
0
0
29
41
47
49
30
30
25
10
0
0
0
4
9
22
50
83
93

ISS Passover

Visibility (miles)

7
8
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 (%)

29
25
14
11
8
1
2
2
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)

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

Chance of Frost

Temperature (°C)

3
5
6
7
8
9
9
10
11
11
11
11
11
8
6
4
4
4
3
2
2
1
1
0

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

88
88
88
87
70
56
45
39
34
31
32
33
36
44
53
64
67
69
72
72
72
73
73
73

Pressure (mb)

1015
1015
1016
1016
1016
1016
1017
1017
1017
1017
1017
1017
1017
1018
1019
1020
1020
1021
1021
1022
1022
1022
1022
1023

Ozone (du)

390
392
393
395
394
393
392
391
390
388
388
388
388
388
389
389
387
385
383
382
381
379
377
375

Thursday 23

First Quarter 49%

11:06

02:43

05 Bad
06 Bad
07 OK
08 OK
09 OK
10 OK
11 OK
12 OK
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

Sun - Rise: 05:53, Set: 19:43, Transit: 12:48. Moon - Rise: 11:06, Set: 02:43. Civil Dark: 20:13 - 05:23. Nautical Dark: 20:50 - 04:44. Astro Dark: 21:31 - 04:03

Total Clouds (% Sky Obscured)

71
49
28
33
37
46
45
47
57
69
80
96
90
85
79
82
87
93
96
97
96

Low Clouds (% Sky Obscured)

0
0
1
1
1
2
2
3
5
5
5
5
14
24
31
38
45
51
62
68
73

Medium Clouds (% Sky Obscured)

18
19
20
11
6
1
4
7
10
16
35
45
52
52
53
54
54
55
66
78
93

High Clouds (% Sky Obscured)

69
43
18
33
37
46
45
34
6
4
13
20
33
31
18
8
5
6
37
68
96

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

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
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
12
16
17

Precipitation Amount (mm)

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)

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

Chance of Frost

Temperature (°C)

-0
1
3
4
6
9
11
12
14
15
15
15
15
13
11
9
9
8
8
7
7

Feels Like (°C)

-2
-3
-3
-4
4
5
5
6
7
7
14
14
14
14
14
14
7
7
7
7
7

Dew Point (°C)

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

Relative Humidity (%)

72
65
58
52
45
38
33
30
27
25
26
28
29
36
44
55
57
59
60
64
67

Pressure (mb)

1023
1023
1024
1024
1024
1024
1023
1023
1022
1021
1021
1021
1020
1021
1022
1022
1022
1023
1023
1023
1023

Ozone (du)

373
371
368
366
364
363
361
360
359
359
359
359
359
359
358
357
357
357
357
355
354

Forecast for Chester, Windsor, United States of America (43.26,-72.60)

Generated: 17/04/26 05:51:59. Forecast: 17/04/26 to 23/04/26. Timezone: UTC-4.00