Clear Outside v1.0 - International Weather Forecasts For Astronomers

Friday 26

Waxing Crescent 52%

11:25

23:17

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
12 Bad
13 OK
14 OK
15 OK
16 Good
17 OK
18 OK
19 OK

Sun - Rise: 07:21, Set: 16:22, Transit: 11:52. Moon - Rise: 11:25, Set: 23:17. Civil Dark: 16:54 - 06:49. Nautical Dark: 17:30 - 06:13. Astro Dark: 18:05 - 05:38

Total Clouds (% Sky Obscured)

85
88
91
100
100
100
100
100
100
100
92
79
81
86
76
70
62
37
43
26
12
13
6
7

Low Clouds (% Sky Obscured)

47
88
91
100
100
94
87
84
77
84
72
64
49
66
32
30
21
14
26
26
12
13
4
7

Medium Clouds (% Sky Obscured)

85
88
91
100
100
99
68
64
82
97
64
39
47
28
35
27
22
2
0
0
0
0
0
0

High Clouds (% Sky Obscured)

85
88
91
100
100
100
100
99
100
60
0
0
0
0
0
0
0
0
0
0
0
0
0
0

ISS Passover

Visibility (miles)

6
1
0
0
0
0
0
0
0
0
0
2
2
6
9
9
9
9
9
9
9
9
7
6

Fog (%)

0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
2

Precipitation Type

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

Precipitation Probability (%)

64
75
67
95
95
91
65
49
33
22
9
3
2
1
1
0
0
0
0
0
0
0
1
0

Precipitation Amount (mm)

0.4
0.5
0.2
1.2
0.9
0.6
0.3
0.2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

-18
-15
-14
-11
-11
-11
-11
-11
-12
-13
-13
-13
-14
-13
-12
-11
-10
-10
-9
-9
-7
-8
-9
-10

Relative Humidity (%)

62
75
83
88
90
90
90
90
90
88
90
92
92
85
78
74
70
68
66
69
85
90
90
92

Pressure (mb)

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

Ozone (du)

320
319
318
321
322
330
338
348
358
360
364
367
365
353
350
353
356
356
359
361
360
354
353
355

Saturday 27

First Quarter 63%

11:46

00:29

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

Sun - Rise: 07:22, Set: 16:22, Transit: 11:52. Moon - Rise: 11:46, Set: 00:29. Civil Dark: 16:55 - 06:49. Nautical Dark: 17:31 - 06:13. Astro Dark: 18:05 - 05:39

Total Clouds (% Sky Obscured)

8
5
6
2
5
5
5
5
9
6
41
5
40
54
64
49
50
13
28
44
73
97
100
100

Low Clouds (% Sky Obscured)

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

Medium Clouds (% Sky Obscured)

0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
3
1
3
27
28
45
50
67
100

High Clouds (% Sky Obscured)

0
2
3
0
0
0
2
1
2
2
24
1
25
26
35
25
26
8
15
30
64
96
100
100

ISS Passover

Visibility (miles)

6
8
8
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9

Fog (%)

4
16
23
27
23
26
24
0
17
20
30
37
24
1
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)

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

Chance of Frost

Temperature (°C)

-10
-10
-11
-11
-12
-12
-13
-13
-13
-13
-13
-13
-13
-10
-6
-4
-2
-1
-1
-1
-2
-4
-5
-5

Feels Like (°C)

-12
-12
-13
-13
-14
-14
-14
-14
-15
-15
-15
-16
-14
-13
-9
-7
-6
-5
-2
-3
-5
-7
-8
-8

Dew Point (°C)

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

Relative Humidity (%)

90
88
86
86
86
88
86
86
84
84
84
84
81
66
60
57
56
56
59
68
86
90
90
94

Pressure (mb)

1023
1024
1024
1023
1023
1023
1023
1023
1023
1023
1024
1024
1024
1023
1023
1021
1019
1018
1018
1017
1017
1017
1016
1015

Ozone (du)

358
354
352
353
351
351
346
346
344
344
343
341
340
341
341
339
334
333
331
331
331
332
330
330

Sunday 28

Waxing Gibbous 74%

12:11

01:45

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
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad
17 Bad
18 Bad
19 Bad

Sun - Rise: 07:22, Set: 16:23, Transit: 11:52. Moon - Rise: 12:11, Set: 01:45. Civil Dark: 16:56 - 06:49. Nautical Dark: 17:31 - 06:13. Astro Dark: 18:06 - 05:39

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
98
96
95

Low Clouds (% Sky Obscured)

5
3
55
60
60
79
97
97
100
98
98
99
99
100
100
100
95
96
98
100
98
97
93
92

Medium Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
100
100
100
100
94
76
83
93
87
33
32
25
25
18

High Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
50
15
0
0

ISS Passover

Visibility (miles)

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

Fog (%)

0
0
0
0
0
0
0
1
8
11
0
10
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Type

None
None
None
None
Snow
Frozen rai
Frozen rai
Frozen rai
Frozen rai
Frozen rai
Frozen rai
Frozen rai
Frozen rai
Frozen rai
Light Rain
None
Moderate Rain
Light Rain
Light Rain
None
None
None
None
None

Precipitation Probability (%)

0
0
1
12
66
95
95
95
82
78
95
95
95
95
82
60
95
95
95
57
34
55
55
47

Precipitation Amount (mm)

0
0
0
0
0.3
0.8
1.2
0.6
0.3
0.2
0.7
0.8
1
1
0.4
0
2.8
2.2
1.9
0
0
0
0
0

Wind Speed/Direction (mph)

1
1
2
2
3
4
4
4
5
4
4
4
3
3
2
3
3
3
3
3
3
3
5
9

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

87
87
87
86
86
89
92
94
98
98
100
98
100
98
98
98
98
100
100
100
100
98
98
85

Pressure (mb)

1014
1013
1012
1010
1009
1008
1007
1005
1003
1002
1001
999
998
997
996
994
992
990
990
988
988
987
987
987

Ozone (du)

330
331
328
327
326
324
323
320
317
317
318
317
315
316
317
317
315
313
317
326
334
343
343
348

Monday 29

Waxing Gibbous 71%

12:42

03:04

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
12 Bad
13 Bad
14 Bad
15 Bad
16 OK
17 OK
18 OK
19 OK

Sun - Rise: 07:22, Set: 16:24, Transit: 11:53. Moon - Rise: 12:42, Set: 03:04. Civil Dark: 16:56 - 06:50. Nautical Dark: 17:32 - 06:14. Astro Dark: 18:07 - 05:39

Total Clouds (% Sky Obscured)

51
64
59
45
45
52
66
69
67
90
97
90
83
76
74
72
65
53
51
46
34
25
17
20

Low Clouds (% Sky Obscured)

42
57
52
26
16
16
59
49
37
90
94
90
83
76
74
72
63
38
51
46
34
25
3
20

Medium Clouds (% Sky Obscured)

10
11
8
7
0
3
2
28
25
38
50
33
19
5
20
7
0
3
6
9
6
3
4
5

High Clouds (% Sky Obscured)

0
0
0
1
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0

ISS Passover

Visibility (miles)

6
3
5
7
9
9
9
9
9
9
9
9
5
6
7
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 (%)

35
25
28
22
5
12
24
15
19
14
12
17
21
19
15
25
6
10
9
4
3
3
2
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)

10
11
14
14
14
14
13
15
14
14
14
14
14
14
15
15
16
16
16
15
15
14
14
13

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-3
-3
-5
-7
-7
-8
-10
-12
-13
-13
-14
-15
-15
-14
-15
-14
-14
-14
-13
-14
-15
-15
-16
-16

Dew Point (°C)

0
-1
-3
-5
-7
-8
-9
-9
-10
-11
-12
-12
-12
-11
-12
-12
-12
-12
-12
-13
-13
-14
-14
-14

Relative Humidity (%)

85
84
80
75
72
69
74
74
74
73
70
72
75
75
71
71
67
67
70
68
69
68
68
68

Pressure (mb)

988
988
988
988
988
988
989
989
989
990
990
991
991
992
993
993
993
993
994
995
996
997
998
999

Ozone (du)

358
370
370
366
365
370
379
382
383
383
387
391
387
391
395
394
393
394
396
407
419
430
435
435

Tuesday 30

Waxing Gibbous 84%

13:22

04:26

20 OK
21 OK
22 OK
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
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad
17 Bad
18 Bad
19 Bad

Sun - Rise: 07:22, Set: 16:25, Transit: 11:53. Moon - Rise: 13:22, Set: 04:26. Civil Dark: 16:57 - 06:50. Nautical Dark: 17:33 - 06:14. Astro Dark: 18:08 - 05:39

Total Clouds (% Sky Obscured)

25
25
41
49
60
68
74
84
76
64
59
63
59
63
73
82
86
89
93
97
90
83
75
83

Low Clouds (% Sky Obscured)

19
15
26
38
49
58
64
72
65
56
47
40
33
26
37
44
49
52
58
66
58
50
44
43

Medium Clouds (% Sky Obscured)

10
1
6
9
13
10
18
43
25
37
54
58
59
63
59
54
51
56
44
35
8
4
4
4

High Clouds (% Sky Obscured)

0
0
0
0
0
1
15
24
29
39
44
22
23
24
16
9
0
0
1
1
2
3
3
7

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 (%)

2
1
3
4
2
5
6
3
9
10
8
13
10
2
3
3
2
8
9
6
10
10
5
25

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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-16
-15
-15
-15
-15
-15
-15
-14
-14
-14
-13
-12
-12
-12
-11
-11
-10
-10
-8
-7
-7
-7
-7
-8

Dew Point (°C)

-14
-14
-13
-13
-13
-13
-13
-13
-13
-14
-14
-13
-12
-11
-10
-9
-9
-8
-7
-6
-5
-6
-6
-6

Relative Humidity (%)

68
69
69
69
69
69
68
67
67
64
62
60
62
63
65
65
65
65
69
74
76
78
79
82

Pressure (mb)

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

Ozone (du)

431
428
427
435
433
432
428
421
414
401
387
384
379
374
369
365
361
356
350
344
338
336
335
333

Wednesday 31

Waxing Gibbous 92%

14:15

05:47

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
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad
17 Bad
18 Bad
19 Bad

Sun - Rise: 07:22, Set: 16:26, Transit: 11:54. Moon - Rise: 14:15, Set: 05:47. Civil Dark: 16:58 - 06:50. Nautical Dark: 17:34 - 06:14. Astro Dark: 18:08 - 05:39

Total Clouds (% Sky Obscured)

90
98
98
99
100
86
73
60
48
69
67
76
74
79
90
96
100
99
99
99
96
90
81
80

Low Clouds (% Sky Obscured)

42
40
29
17
0
0
0
0
6
12
18
21
25
28
27
30
33
30
35
36
36
40
47
56

Medium Clouds (% Sky Obscured)

5
5
9
19
32
51
70
60
48
69
67
70
74
79
90
96
100
99
99
99
96
90
81
80

High Clouds (% Sky Obscured)

13
0
0
49
51
48
42
22
24
23
10
0
0
0
12
23
41
37
53
47
24
12
0
0

ISS Passover

Visibility (miles)

9
9
9
9
9
9
7
4
2
1
1
0
0
0
0
0
0
0
2
5
7
6
5
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
Snow
Snow
None
None
None
None
None
None
None
None
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
None
None
None
Snow

Precipitation Probability (%)

34
41
41
35
17
22
23
19
32
39
44
47
49
50
55
53
53
51
47
41
36
30
21
41

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

-7
-8
-8
-9
-9
-9
-9
-9
-9
-9
-9
-9
-9
-8
-8
-7
-7
-6
-7
-7
-7
-7
-7
-7

Relative Humidity (%)

81
79
80
80
82
84
87
88
90
92
92
96
92
92
90
92
92
94
92
92
90
92
96
98

Pressure (mb)

1006
1006
1007
1007
1007
1007
1007
1007
1007
1007
1007
1007
1007
1007
1007
1006
1005
1004
1004
1004
1004
1004
1004
1004

Ozone (du)

332
331
330
329
329
328
325
323
321
323
324
326
328
330
332
334
336
338
342
346
350
356
362
368

Thursday 1

Waxing Gibbous 98%

15:21

06:58

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
10 Bad
11 Bad
12 Bad

Sun - Rise: 07:22, Set: 16:27, Transit: 11:54. Moon - Rise: 15:21, Set: 06:58. Civil Dark: 16:59 - 06:50. Nautical Dark: 17:35 - 06:14. Astro Dark: 18:09 - 05:40

Total Clouds (% Sky Obscured)

82
81
86
88
94
80
72
63
54
45
35
38
36
30
48
71
100

Low Clouds (% Sky Obscured)

59
68
73
81
90
73
54
36
26
17
9
10
11
13
38
69
100

Medium Clouds (% Sky Obscured)

81
81
76
74
72
60
54
54
54
45
34
34
30
30
26
20
28

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
19
36
30
39
19
1

ISS Passover

Visibility (miles)

4
5
5
6
8
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

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

Precipitation Probability (%)

49
49
41
37
17
15
12
3
8
9
8
9
10
6
12
13
6

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-10
-10
-11
-10
-10
-10
-15
-15
-16
-16
-16
-16
-16
-15
-15
-14
-14

Dew Point (°C)

-8
-10
-12
-12
-13
-14
-15
-15
-17
-17
-18
-18
-17
-17
-16
-15
-14

Relative Humidity (%)

90
87
80
80
78
76
73
72
67
69
67
67
64
62
60
61
64

Pressure (mb)

1004
1005
1006
1006
1006
1006
1007
1007
1008
1008
1009
1009
1009
1010
1010
1010
1010

Ozone (du)

389
411
432
440
447
455
438
421
404
394
385
375
374
372
371
366
361

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

Generated: 26/12/25 20:26:08. Forecast: 26/12/25 to 01/01/26. Timezone: UTC-5.00