Clear Outside v1.0 - International Weather Forecasts For Astronomers

Thursday 27

Waxing Crescent 47%

12:20

23:07

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

Sun - Rise: 07:00, Set: 16:17, Transit: 11:38. Moon - Rise: 12:20, Set: 23:07. Civil Dark: 16:48 - 06:28. Nautical Dark: 17:24 - 05:53. Astro Dark: 17:58 - 05:19

Total Clouds (% Sky Obscured)

60
77
70
97
87
71
35
73
86
100
92
75
22
15
15
17
16
24
49
57
86
73
90
100

Low Clouds (% Sky Obscured)

34
42
63
78
68
64
35
48
36
46
37
27
19
14
15
17
16
24
34
35
35
48
88
39

Medium Clouds (% Sky Obscured)

50
49
70
84
58
9
1
0
4
50
71
72
3
1
0
0
0
6
16
21
58
65
85
100

High Clouds (% Sky Obscured)

47
32
16
50
2
3
2
65
71
100
86
20
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
None
None
None
None

Precipitation Probability (%)

0
0
1
2
0
0
0
1
1
0
0
0
0
0
1
0
1
2
3
5
5
7
14
41

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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

58
55
52
53
54
54
58
64
66
69
66
66
66
69
70
70
68
68
68
68
67
68
68
61

Pressure (mb)

1009
1008
1008
1008
1007
1008
1008
1008
1008
1008
1008
1008
1007
1007
1006
1006
1006
1006
1005
1005
1005
1005
1005
1005

Ozone (du)

306
305
305
305
306
310
314
315
319
321
322
321
324
329
327
326
327
329
333
338
350
367
386
390

Friday 28

First Quarter 57%

12:41

00:18

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 OK
23 OK
00 OK
01 OK
02 OK
03 OK
04 Bad
05 Bad
06 OK
07 Good
08 Good
09 Good

Sun - Rise: 07:01, Set: 16:16, Transit: 11:38. Moon - Rise: 12:41, Set: 00:18. Civil Dark: 16:48 - 06:29. Nautical Dark: 17:23 - 05:54. Astro Dark: 17:58 - 05:20

Total Clouds (% Sky Obscured)

96
95
90
90
86
83
83
56
81
84
63
51
42
26
25
27
28
19
44
68
21
6
7
2

Low Clouds (% Sky Obscured)

28
59
51
45
76
77
76
38
63
76
47
31
26
16
16
17
16
13
43
68
14
5
5
2

Medium Clouds (% Sky Obscured)

91
85
75
73
43
44
34
31
44
50
18
14
8
7
3
6
3
2
0
0
0
0
0
0

High Clouds (% Sky Obscured)

0
2
4
0
0
4
3
6
39
2
0
0
0
0
0
1
1
0
0
0
0
0
0
0

ISS Passover

Visibility (miles)

8
1
0
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

Snow
Snow
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

48
67
42
19
23
13
19
4
4
3
7
2
1
1
2
2
2
1
0
0
0
0
0
0

Precipitation Amount (mm)

0.2
0.6
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
12
12
12
11
11
11
11
10
11
11
11
12
11
11
11
11
11
11
10
10
11

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

-6
-4
-2
-7
-7
-6
-6
-6
-6
-6
-7
-7
-7
-8
-8
-8
-8
-8
-8
-8
-9
-9
-9
-9

Relative Humidity (%)

61
69
78
54
53
58
63
62
65
66
66
64
64
64
65
67
67
67
65
67
65
64
63
59

Pressure (mb)

1005
1005
1005
1005
1005
1006
1007
1009
1010
1011
1011
1012
1013
1014
1015
1016
1018
1019
1020
1021
1022
1023
1024
1025

Ozone (du)

382
368
358
351
347
343
346
347
346
345
340
343
344
343
340
340
340
340
341
342
341
339
336
336

Saturday 29

Waxing Gibbous 68%

13:01

01:31

10 Good
11 Good
12 OK
13 OK
14 Good
15 Good
16 OK
17 Bad
18 OK
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

Sun - Rise: 07:02, Set: 16:16, Transit: 11:39. Moon - Rise: 13:01, Set: 01:31. Civil Dark: 16:48 - 06:31. Nautical Dark: 17:23 - 05:55. Astro Dark: 17:57 - 05:21

Total Clouds (% Sky Obscured)

3
2
30
20
3
4
25
64
44
76
86
92
93
100
100
100
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

3
2
30
20
3
2
0
0
0
0
0
0
0
24
56
65
65
60
90
72
88
89
93
98

Medium Clouds (% Sky Obscured)

0
0
0
0
1
0
0
0
44
72
66
67
72
100
100
100
97
97
100
100
100
98
96
96

High Clouds (% Sky Obscured)

0
0
0
1
0
1
9
63
17
10
27
31
53
100
98
100
100
98
100
42
100
80
90
73

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
8
1
9
9
2
2
2
1

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
Snow
None
Snow
Snow
Snow

Precipitation Probability (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
21
22
6
44
48
42
42
49

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.2
0
0.1
0.1
0.2

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

54
48
45
43
44
49
52
61
64
67
68
68
68
68
66
64
65
76
81
79
79
82
81
83

Pressure (mb)

1026
1027
1027
1027
1028
1029
1029
1030
1031
1031
1032
1032
1032
1032
1032
1031
1031
1032
1031
1030
1030
1029
1028
1027

Ozone (du)

335
331
329
328
327
328
327
327
326
327
324
321
318
318
317
317
316
315
317
317
318
321
322
324

Sunday 30

Waxing Gibbous 79%

13:22

02:47

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
05 Bad
06 OK
07 OK
08 OK
09 OK

Sun - Rise: 07:03, Set: 16:16, Transit: 11:39. Moon - Rise: 13:22, Set: 02:47. Civil Dark: 16:47 - 06:32. Nautical Dark: 17:23 - 05:56. Astro Dark: 17:57 - 05:22

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
99
100
99
98
100
91
77
77
79
72
57
39
40
40
37

Low Clouds (% Sky Obscured)

98
99
99
99
99
99
98
98
97
94
97
92
86
92
57
13
13
16
25
57
39
40
39
21

Medium Clouds (% Sky Obscured)

96
97
97
99
75
88
35
35
39
39
49
55
54
48
47
53
54
65
53
30
0
0
0
0

High Clouds (% Sky Obscured)

82
93
97
100
88
50
64
60
57
74
85
95
95
95
91
77
77
79
67
33
0
0
0
0

ISS Passover

Visibility (miles)

0
0
0
0
0
0
0
0
0
8
9
9
7
8
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

Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

68
79
88
95
95
95
94
69
57
45
32
19
23
10
1
2
3
0
1
4
3
7
9
8

Precipitation Amount (mm)

0.4
0.5
0.5
0.9
0.7
0.7
0.6
0.3
0.2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

86
91
94
98
96
96
98
98
94
91
88
83
83
77
77
78
78
81
81
81
83
84
78
70

Pressure (mb)

1026
1024
1022
1020
1019
1018
1017
1017
1016
1016
1015
1015
1015
1016
1016
1016
1017
1017
1018
1018
1019
1020
1020
1021

Ozone (du)

329
330
333
336
337
337
337
338
341
344
348
352
351
353
354
356
360
362
362
362
364
366
370
375

Monday 1

Waxing Gibbous 88%

13:46

04:07

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

Sun - Rise: 07:04, Set: 16:15, Transit: 11:39. Moon - Rise: 13:46, Set: 04:07. Civil Dark: 16:47 - 06:33. Nautical Dark: 17:23 - 05:57. Astro Dark: 17:57 - 05:23

Total Clouds (% Sky Obscured)

49
74
86
72
57
31
34
30
25
25
25
30
30
35
45
15
15
20
41
62
85
91
97
100

Low Clouds (% Sky Obscured)

32
53
79
68
46
17
7
4
1
1
1
1
1
1
15
9
4
0
0
0
0
0
5
5

Medium Clouds (% Sky Obscured)

10
20
30
25
15
8
6
30
25
20
25
30
30
35
45
15
15
20
41
62
85
91
97
99

High Clouds (% Sky Obscured)

0
0
0
0
5
1
4
15
13
15
25
30
30
35
45
15
15
20
41
62
85
91
97
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
7
4

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 (%)

23
28
15
21
22
18
11
10
0
0
0
0
0
0
0
0
0
0
0
0
0
20
29
36

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)

10
11
11
12
10
8
7
5
4
4
3
3
3
2
1
1
2
2
2
2
2
2
3
3

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

66
60
61
63
66
67
71
84
84
85
89
82
82
82
77
77
77
76
74
73
71
70
71
74

Pressure (mb)

1022
1022
1022
1022
1022
1023
1024
1025
1026
1027
1027
1028
1028
1028
1029
1028
1029
1029
1029
1029
1029
1029
1029
1029

Ozone (du)

376
380
380
376
371
374
375
370
367
365
364
364
363
363
361
357
356
355
353
352
350
348
348
348

Tuesday 2

Waxing Gibbous 95%

14:14

05:32

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
05 Bad
06 Bad
07 Bad
08 Bad
09 Bad

Sun - Rise: 07:05, Set: 16:15, Transit: 11:40. Moon - Rise: 14:14, Set: 05:32. Civil Dark: 16:47 - 06:33. Nautical Dark: 17:23 - 05:58. Astro Dark: 17:57 - 05:23

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
99
99
99
99

Low Clouds (% Sky Obscured)

5
5
5
0
0
0
23
46
73
81
89
97
98
99
100
100
100
100
100
99
99
99
99
99

Medium Clouds (% Sky Obscured)

99
99
99
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
95
90
85
61
37
13

High Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
79
52
25
17
8
0
23
53
88

ISS Passover

Visibility (miles)

1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
4
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

Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow

Precipitation Probability (%)

65
86
95
95
95
95
95
95
95
95
95
94
95
95
95
95
95
95
95
95
95
95
95
95

Precipitation Amount (mm)

0.3
0.5
0.9
1.3
1.5
1.8
1.7
1.3
1.2
0.9
0.6
0.5
0.9
1
1.1
1.6
1.9
2.4
2.2
1.7
1.2
1.5
1.3
0.8

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

-10
-8
-7
-6
-6
-5
-4
-5
-5
-6
-6
-6
-7
-7
-7
-7
-7
-6
-6
-6
-6
-6
-6
-6

Relative Humidity (%)

76
82
87
92
92
94
96
94
94
92
94
92
92
92
94
96
96
98
96
96
98
96
92
89

Pressure (mb)

1029
1027
1025
1024
1023
1021
1020
1018
1017
1015
1014
1013
1012
1011
1010
1009
1008
1008
1007
1007
1006
1006
1006
1006

Ozone (du)

347
344
341
339
337
335
334
332
331
329
330
331
331
334
338
341
344
346
349
347
345
344
344
344

Wednesday 3

Waxing Gibbous 99%

14:50

06:57

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
05 Bad
06 Bad

Sun - Rise: 07:06, Set: 16:15, Transit: 11:40. Moon - Rise: 14:50, Set: 06:57. Civil Dark: 16:47 - 06:34. Nautical Dark: 17:22 - 05:59. Astro Dark: 17:57 - 05:24

Total Clouds (% Sky Obscured)

93
84
75
71
66
63
46
30
19
40
60
81
83
87
95
96
100
100
100
100
100

Low Clouds (% Sky Obscured)

90
76
63
61
58
58
43
30
17
26
35
43
47
50
54
63
73
83
85
88
85

Medium Clouds (% Sky Obscured)

10
15
12
12
12
7
1
0
0
9
19
28
52
76
95
96
100
100
100
100
100

High Clouds (% Sky Obscured)

91
84
75
71
66
63
46
30
19
40
51
42
35
36
69
96
99
100
90
81
71

ISS Passover

Visibility (miles)

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

Snow
Snow
Snow
Snow
Snow
None
None
Snow
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

95
95
87
74
68
47
44
45
28
31
29
6
11
11
1
2
4
0
4
6
6

Precipitation Amount (mm)

0.9
0.9
0.4
0.3
0.3
0
0
0.1
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-10
-9
-9
-8
-4
-4
-5
-5
-5
-5
-11
-11
-11
-11
-11
-12
-12
-12
-12
-12
-12

Dew Point (°C)

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

Relative Humidity (%)

85
86
86
87
87
91
92
92
92
92
94
92
94
94
94
94
94
94
92
94
94

Pressure (mb)

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

Ozone (du)

345
343
342
341
339
338
337
334
332
329
331
332
333
331
329
327
328
329
330
332
334

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

Generated: 27/11/25 10:06:45. Forecast: 27/11/25 to 03/12/25. Timezone: UTC-5.00