Clear Outside v1.0 - International Weather Forecasts For Astronomers

Thursday 16

Waning Crescent 2%

05:32

19:07

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: 05:55, Set: 20:01, Transit: 12:59. Moon - Rise: 05:32, Set: 19:07. Civil Dark: 20:39 - 05:18. Nautical Dark: 21:25 - 04:31. Astro Dark: 22:19 - 03:36

Total Clouds (% Sky Obscured)

75
100
88
87
80
94
80
96
97
98
100
100
100
98
94
90
83
100
96
100
97
96
81
100

Low Clouds (% Sky Obscured)

44
56
48
62
33
44
1
0
38
61
74
35
38
25
38
40
44
43
40
52
39
71
40
94

Medium Clouds (% Sky Obscured)

32
16
6
9
12
42
100
96
97
98
100
97
97
98
64
30
19
18
18
53
57
33
29
33

High Clouds (% Sky Obscured)

9
51
96
67
69
75
100
96
97
98
100
100
100
90
74
50
75
100
94
100
94
88
73
97

ISS Passover

Visibility (miles)

-
-
-
-
-
-
-
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

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
14
6
3
1
3
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
13
13
13
12
11
8
7
7
9
8
8
9
9
10
9
9
10
11
12
14
15
16

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

61
60
56
55
53
57
59
79
81
84
87
87
90
90
91
96
95
95
93
91
87
81
76
70

Pressure (mb)

1017
1017
1017
1018
1018
1018
1017
1017
1018
1018
1018
1018
1018
1018
1018
1018
1018
1018
1018
1018
1018
1018
1018
1018

Ozone (du)

389
384
380
372
369
367
365
365
366
367
370
370
372
373
372
371
371
372
372
373
372
372
372
371

Friday 17

New Moon 0%

05:47

20:39

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 OK
08 OK
09 OK
10 Bad
11 Bad

Sun - Rise: 05:53, Set: 20:03, Transit: 12:59. Moon - Rise: 05:47, Set: 20:39. Civil Dark: 20:40 - 05:15. Nautical Dark: 21:27 - 04:28. Astro Dark: 22:22 - 03:33

Total Clouds (% Sky Obscured)

100
100
96
99
97
100
97
98
100
97
93
84
84
44
66
89
95
44
45
29
43
43
55
74

Low Clouds (% Sky Obscured)

55
77
83
83
73
99
59
65
64
84
59
67
42
0
12
0
13
24
36
29
43
43
55
52

Medium Clouds (% Sky Obscured)

95
97
58
60
47
53
97
70
100
95
85
56
44
44
66
89
92
31
0
0
0
0
0
38

High Clouds (% Sky Obscured)

100
100
89
93
77
78
3
6
3
3
9
67
76
44
40
33
17
2
18
0
0
0
0
0

ISS Passover

Visibility (miles)

9
9
9
9
9
7
5
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
1
18
25
33
41
32
20
11
24
18
6
4
2
2
0
0
0
0
0
0
0
1
19

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)

17
15
15
15
14
13
14
13
11
10
12
10
9
8
7
8
7
7
6
6
8
10
11
11

Chance of Frost

Temperature (°C)

15
15
15
16
15
15
15
14
13
12
12
11
10
10
9
9
8
7
6
6
8
10
11
12

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

70
68
75
72
74
76
80
89
93
93
90
87
88
88
90
90
94
94
94
93
87
81
73
67

Pressure (mb)

1018
1017
1017
1017
1017
1017
1017
1017
1017
1018
1018
1018
1019
1019
1019
1019
1019
1019
1019
1020
1020
1021
1021
1021

Ozone (du)

371
371
371
372
372
370
371
374
375
374
374
372
372
375
379
383
387
389
392
394
396
401
404
406

Saturday 18

Waxing Crescent 2%

06:10

22:16

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

Sun - Rise: 05:50, Set: 20:05, Transit: 12:59. Moon - Rise: 06:10, Set: 22:16. Civil Dark: 20:42 - 05:13. Nautical Dark: 21:30 - 04:25. Astro Dark: 22:25 - 03:29

Total Clouds (% Sky Obscured)

73
65
58
13
46
68
30
77
70
70
71
53
28
30
43
52
41
38
7
1
1
18
48
64

Low Clouds (% Sky Obscured)

54
39
33
13
43
37
27
25
32
42
41
44
1
25
43
52
41
38
1
1
1
18
28
37

Medium Clouds (% Sky Obscured)

30
36
30
0
19
38
8
47
46
36
32
18
14
8
0
0
0
1
2
0
0
0
22
28

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
7
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 (%)

4
3
8
36
41
32
16
3
1
3
14
6
3
1
0
0
1
0
0
0
0
2
5
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)

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

Chance of Frost

Temperature (°C)

13
13
14
14
15
14
12
12
10
8
8
7
7
6
6
5
5
5
4
5
7
8
10
11

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

61
60
64
62
62
69
72
71
74
77
78
82
88
90
90
88
86
85
88
85
75
70
68
64

Pressure (mb)

1021
1021
1021
1021
1021
1021
1022
1022
1023
1024
1024
1024
1025
1025
1025
1025
1025
1025
1026
1026
1027
1027
1027
1027

Ozone (du)

408
403
401
402
401
402
405
409
413
415
413
414
414
415
413
413
410
407
406
406
405
404
404
404

Sunday 19

Waxing Crescent 6%

06:43

23:51

12 Bad
13 Bad
14 Bad
15 Bad
16 Bad
17 OK
18 OK
19 Good
20 Good
21 Good
22 OK
23 OK
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: 05:48, Set: 20:07, Transit: 12:59. Moon - Rise: 06:43, Set: 23:51. Civil Dark: 20:44 - 05:10. Nautical Dark: 21:32 - 04:22. Astro Dark: 22:28 - 03:26

Total Clouds (% Sky Obscured)

88
87
75
62
41
30
14
10
5
0
15
30
50
52
53
56
61
83
93
91
87
90
92
90

Low Clouds (% Sky Obscured)

64
68
60
55
38
28
14
10
5
0
14
26
39
43
45
49
55
71
81
79
77
73
71
73

Medium Clouds (% Sky Obscured)

32
25
16
3
2
1
0
0
0
0
11
22
33
27
33
31
31
31
32
32
80
86
87
41

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 (%)

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
Very Light Rain
None
None
None

Precipitation Probability (%)

29
33
27
24
10
5
1
0
0
0
0
0
0
3
4
5
27
35
40
47
49
43
39
34

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.2
0
0
0

Wind Speed/Direction (mph)

10
10
12
12
12
11
11
9
7
6
4
4
4
4
5
6
6
8
9
11
11
12
14
15

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

58
56
68
74
71
68
69
75
85
88
88
86
88
88
89
91
91
89
86
82
72
68
64
60

Pressure (mb)

1027
1027
1027
1027
1027
1027
1027
1027
1028
1028
1028
1028
1028
1028
1028
1028
1028
1028
1027
1027
1027
1027
1027
1027

Ozone (du)

405
404
404
404
404
405
405
405
406
408
410
413
416
418
420
421
422
424
425
424
422
420
418
416

Monday 20

Waxing Crescent 14%

07:34

01:15

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

Sun - Rise: 05:46, Set: 20:09, Transit: 12:58. Moon - Rise: 07:34, Set: 01:15. Civil Dark: 20:46 - 05:08. Nautical Dark: 21:34 - 04:20. Astro Dark: 22:31 - 03:22

Total Clouds (% Sky Obscured)

96
96
95
95
89
81
42
83
90
96
95
91
88
48
47
39
43
45
45
35
40
43
50
65

Low Clouds (% Sky Obscured)

72
71
70
69
67
64
42
73
84
93
88
80
72
48
47
39
43
45
45
33
32
31
49
65

Medium Clouds (% Sky Obscured)

45
43
41
36
26
12
0
64
78
80
29
23
14
10
6
0
2
2
0
0
1
1
1
0

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
40
2
2
2
4
0
0
2
0
1
1
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 (%)

25
33
32
33
28
20
10
20
19
18
16
15
8
7
4
0
4
4
1
1
1
1
4
5

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)

17
17
17
17
18
17
15
15
14
13
12
14
15
15
15
16
16
16
16
16
15
17
18
18

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

61
63
62
64
71
82
74
84
81
81
88
87
85
82
81
79
78
76
76
77
73
71
69
68

Pressure (mb)

1027
1027
1027
1027
1027
1027
1027
1027
1028
1028
1028
1029
1029
1029
1029
1029
1029
1029
1029
1029
1029
1029
1029
1029

Ozone (du)

415
415
417
417
419
420
423
422
418
415
414
414
408
404
401
398
394
394
392
388
392
396
400
398

Tuesday 21

Waxing Crescent 24%

08:45

02:18

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

Sun - Rise: 05:44, Set: 20:10, Transit: 12:58. Moon - Rise: 08:45, Set: 02:18. Civil Dark: 20:48 - 05:06. Nautical Dark: 21:37 - 04:17. Astro Dark: 22:34 - 03:18

Total Clouds (% Sky Obscured)

81
81
77
76
63
41
23
18
13
8
19
29
42
39
28
18
18
18
15
14
13
15
18
22

Low Clouds (% Sky Obscured)

81
81
77
72
63
41
23
18
13
8
19
29
39
39
28
18
18
15
14
14
13
15
18
22

Medium Clouds (% Sky Obscured)

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

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
5
11
16
12
8
3
3
1
1
1
1
2
1
1

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 (%)

6
7
7
6
6
4
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
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)

18
17
17
16
15
14
13
12
11
10
8
8
8
8
8
7
7
7
7
8
10
12
15
15

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

68
66
65
61
59
63
67
71
78
84
91
91
91
93
94
94
94
96
96
96
85
77
68
67

Pressure (mb)

1029
1029
1028
1028
1028
1028
1027
1027
1027
1027
1027
1027
1027
1027
1026
1026
1026
1026
1026
1026
1027
1027
1027
1027

Ozone (du)

395
393
394
395
395
395
394
394
393
392
391
392
393
394
395
395
396
396
397
397
398
399
400
400

Wednesday 22

Waxing Crescent 35%

10:10

03:00

12 OK
13 OK
14 OK
15 OK
16 OK
17 OK
18 OK
19 OK
20 OK
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: 05:42, Set: 20:12, Transit: 12:58. Moon - Rise: 10:10, Set: 03:00. Civil Dark: 20:50 - 05:03. Nautical Dark: 21:39 - 04:14. Astro Dark: 22:38 - 03:15

Total Clouds (% Sky Obscured)

27
23
21
17
23
26
30
35
40
46
45
47
49
58
56
60
62
67
76
75
82
85
87
83

Low Clouds (% Sky Obscured)

27
23
21
17
23
26
30
35
40
46
45
47
49
58
56
60
62
67
60
31
18
6
1
1

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
7
10
15
22
28

High Clouds (% Sky Obscured)

0
0
0
0
0
1
1
1
0
0
0
0
0
0
0
0
0
0
0
8
16
24
49
75

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
1
1
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

6
6
6
5
4
5
5
6
6
6
6
6
6
6
6
6
5
5
6
6
6
6
6
5

Relative Humidity (%)

67
68
65
63
61
66
72
78
84
90
94
94
96
96
96
96
96
94
94
93
85
76
69
66

Pressure (mb)

1027
1027
1027
1027
1027
1027
1027
1027
1027
1027
1027
1027
1027
1028
1027
1027
1027
1027
1027
1027
1028
1028
1028
1027

Ozone (du)

400
401
400
400
400
399
398
396
397
397
397
398
400
401
401
400
400
400
401
401
403
405
406
409

Forecast for Boston, Lincolnshire, United Kingdom (52.98,-0.02)

Generated: 16/04/26 19:26:07. Forecast: 16/04/26 to 22/04/26. Timezone: UTC+1.00