Clear Outside v1.0 - International Weather Forecasts For Astronomers

Friday 26

Waxing Crescent 41%

11:05

23:17

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: 07:21, Set: 16:21, Transit: 11:51. Moon - Rise: 11:05, Set: 23:17. Civil Dark: 16:53 - 06:49. Nautical Dark: 17:29 - 06:13. Astro Dark: 18:04 - 05:38

Total Clouds (% Sky Obscured)

78
84
95
100
100
95
100
100
100
100
100
100
100
100
100
100
99
99
98
95
91
89
70
81

Low Clouds (% Sky Obscured)

0
0
0
0
0
1
6
1
7
30
67
100
100
100
96
95
91
80
74
72
67
64
34
61

Medium Clouds (% Sky Obscured)

48
56
82
99
84
93
92
68
94
100
100
100
100
100
100
100
93
92
90
76
55
51
39
35

High Clouds (% Sky Obscured)

74
84
95
100
99
85
99
100
100
100
100
100
100
100
100
100
55
55
45
25
1
0
0
0

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
2
1
0
0
0
0
0
0
0
1
0
4
7

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

Precipitation Probability (%)

0
0
0
0
0
0
0
0
0
5
33
90
95
95
95
79
64
57
43
24
23
6
2
0

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0.5
1.2
1.2
0.7
0.5
0.3
0.2
0.2
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

-14
-13
-12
-9
-8
-9
-9
-9
-10
-9
-9
-8
-9
-9
-10
-10
-10
-10
-10
-10
-10
-10
-11
-10

Feels Like (°C)

-19
-17
-16
-13
-12
-13
-13
-13
-13
-12
-13
-12
-13
-13
-13
-13
-13
-13
-13
-13
-14
-13
-14
-13

Dew Point (°C)

-22
-22
-22
-19
-18
-18
-17
-17
-15
-15
-15
-14
-12
-11
-11
-11
-11
-11
-11
-12
-12
-11
-12
-12

Relative Humidity (%)

50
45
43
42
43
46
52
54
66
64
60
65
78
85
88
88
88
88
88
86
90
94
92
83

Pressure (mb)

1026
1024
1023
1022
1021
1021
1021
1020
1020
1020
1019
1020
1020
1020
1020
1020
1020
1020
1019
1020
1020
1021
1022
1022

Ozone (du)

316
316
318
319
316
315
317
321
323
321
321
321
322
322
321
329
334
342
350
358
360
362
366
361

Saturday 27

First Quarter 52%

11:25

00:29

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

Sun - Rise: 07:22, Set: 16:22, Transit: 11:52. Moon - Rise: 11:25, Set: 00:29. Civil Dark: 16:54 - 06:49. Nautical Dark: 17:30 - 06:13. Astro Dark: 18:05 - 05:39

Total Clouds (% Sky Obscured)

87
60
49
39
51
33
22
9
6
12
5
5
3
3
3
2
1
2
5
49
50
50
51
81

Low Clouds (% Sky Obscured)

69
38
26
35
51
30
19
9
5
12
5
5
3
3
3
2
1
2
2
2
2
2
2
0

Medium Clouds (% Sky Obscured)

30
27
20
10
3
0
0
0
0
0
0
0
0
0
0
0
0
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
2
26
25
35
39
77

ISS Passover

Visibility (miles)

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

Fog (%)

0
0
0
0
0
0
0
0
0
0
5
2
2
2
3
2
0
2
6
9
10
9
8
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
1
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

77
71
69
66
66
69
84
90
92
92
90
88
86
86
85
85
83
84
83
83
83
83
78
62

Pressure (mb)

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

Ozone (du)

353
355
356
359
361
361
360
358
357
358
357
356
354
352
351
348
344
344
340
341
340
338
336
336

Sunday 28

Waxing Gibbous 63%

11:46

01:45

10 Bad
11 OK
12 Bad
13 OK
14 OK
15 OK
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: 07:22, Set: 16:22, Transit: 11:52. Moon - Rise: 11:46, Set: 01:45. Civil Dark: 16:55 - 06:49. Nautical Dark: 17:31 - 06:13. Astro Dark: 18:05 - 05:39

Total Clouds (% Sky Obscured)

69
39
50
44
37
46
88
100
100
100
97
100
100
100
100
100
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
3
3
3
3
35
75
44
70
88
82
95
97
100
100
98
99
99
100

Medium Clouds (% Sky Obscured)

0
2
2
18
5
17
70
100
82
85
77
100
100
100
100
100
97
99
95
100
100
100
100
100

High Clouds (% Sky Obscured)

59
29
34
30
18
24
63
99
100
100
84
100
100
100
100
100
100
100
100
100
100
100
100
100

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
7
4
2
3
0
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
Snow
Frozen rai
Frozen rai
Frozen rai
None
None
Frozen rai
Frozen rai
Frozen rai
Light Rain

Precipitation Probability (%)

0
0
0
0
0
0
0
0
0
0
0
0
1
23
95
95
95
95
64
57
95
95
95
95

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.7
1.5
0.6
0.9
0
0
0.6
0.8
0.9
0.9

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-10
-7
-6
-5
-4
-4
-5
-7
-8
-8
-8
-7
-7
-7
-5
-5
-6
-5
-5
-5
-5
-4
-3
-3

Dew Point (°C)

-13
-12
-11
-10
-8
-6
-5
-6
-6
-6
-7
-7
-7
-6
-5
-4
-4
-3
-3
-3
-2
-2
-1
-1

Relative Humidity (%)

56
52
52
53
56
66
82
89
90
92
87
84
82
86
84
84
89
92
94
98
98
98
98
98

Pressure (mb)

1023
1021
1020
1018
1018
1018
1017
1017
1016
1015
1014
1013
1011
1010
1009
1007
1007
1005
1003
1002
1001
999
998
996

Ozone (du)

335
334
334
336
334
331
331
330
332
332
332
332
331
328
326
324
323
323
322
320
320
320
319
321

Monday 29

Waxing Gibbous 74%

12:11

03:04

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: 07:22, Set: 16:23, Transit: 11:52. Moon - Rise: 12:11, Set: 03:04. Civil Dark: 16:56 - 06:50. Nautical Dark: 17:31 - 06:14. Astro Dark: 18:06 - 05:39

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
97
91
82
85
91
81
68
69
63
70
85
90
71
81
80
70
69
62

Low Clouds (% Sky Obscured)

100
100
100
100
100
100
97
91
82
85
91
50
34
40
23
39
82
87
30
70
77
56
69
62

Medium Clouds (% Sky Obscured)

93
75
83
90
97
100
95
31
19
14
61
7
4
2
3
23
23
43
42
40
29
20
10
0

High Clouds (% Sky Obscured)

100
100
100
87
73
55
28
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

ISS Passover

Visibility (miles)

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

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

Precipitation Probability (%)

95
95
95
95
95
95
76
63
69
74
48
23
28
16
9
12
18
21
14
18
14
13
18
5

Precipitation Amount (mm)

0.6
0.7
1.5
1.2
1.5
0.8
0.4
0.3
0
0.2
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

3
3
3
3
3
4
4
4
5
7
9
11
13
12
14
14
13
13
14
14
14
15
15
15

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-3
-3
-2
-2
-1
-1
-1
-0
-1
0
-2
-4
-6
-7
-10
-11
-11
-12
-14
-13
-15
-16
-15
-16

Dew Point (°C)

-0
-0
0
1
1
1
2
2
2
3
1
-2
-4
-5
-9
-10
-10
-10
-11
-12
-12
-13
-13
-13

Relative Humidity (%)

98
98
98
100
98
100
100
100
98
100
94
86
83
84
73
73
71
80
71
72
74
72
74
74

Pressure (mb)

995
993
991
989
989
987
987
986
985
985
985
986
986
987
987
987
988
988
989
989
989
989
990
991

Ozone (du)

320
318
318
315
318
325
329
339
340
343
349
369
371
367
369
375
378
377
384
384
385
395
399
402

Tuesday 30

Waxing Gibbous 84%

12:42

04:26

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

Sun - Rise: 07:22, Set: 16:24, Transit: 11:53. Moon - Rise: 12:42, Set: 04:26. Civil Dark: 16:56 - 06:50. Nautical Dark: 17:32 - 06:14. Astro Dark: 18:07 - 05:39

Total Clouds (% Sky Obscured)

51
60
55
47
52
46
45
33
25
33
42
54
64
77
89
27
35
46
50
54
52
52
40
41

Low Clouds (% Sky Obscured)

40
35
34
46
34
34
22
14
3
21
32
45
52
65
79
20
23
33
44
54
52
52
40
41

Medium Clouds (% Sky Obscured)

3
11
13
7
13
8
15
30
25
22
21
47
17
13
36
12
11
12
11
7
1
2
3
2

High Clouds (% Sky Obscured)

0
0
0
0
0
0
4
15
15
15
25
30
37
30
36
27
35
46
38
19
0
0
0
0

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
8
8
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 (%)

5
4
3
2
3
1
3
3
2
3
5
3
10
18
9
11
9
4
8
7
2
5
7
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)

16
17
16
15
15
14
14
14
15
15
14
12
12
11
11
11
12
11
10
10
9
8
9
9

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-16
-15
-15
-14
-13
-14
-15
-15
-15
-16
-16
-15
-15
-15
-15
-16
-16
-16
-16
-16
-16
-16
-14
-14

Dew Point (°C)

-14
-14
-13
-12
-12
-12
-13
-13
-14
-14
-14
-14
-13
-13
-13
-13
-13
-14
-13
-14
-14
-14
-14
-13

Relative Humidity (%)

68
67
67
68
66
67
65
67
67
67
67
67
69
71
72
69
69
68
69
68
68
67
64
62

Pressure (mb)

992
992
992
992
993
994
995
996
997
997
998
999
999
1000
1000
1000
1001
1002
1002
1003
1003
1004
1005
1005

Ozone (du)

403
406
409
415
420
427
437
447
448
444
445
442
440
439
435
427
423
418
414
402
391
380
375
371

Wednesday 31

Waxing Gibbous 92%

13:22

05:47

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

Sun - Rise: 07:22, Set: 16:25, Transit: 11:53. Moon - Rise: 13:22, Set: 05:47. Civil Dark: 16:57 - 06:50. Nautical Dark: 17:33 - 06:14. Astro Dark: 18:08 - 05:39

Total Clouds (% Sky Obscured)

41
40
40
51
62
78
74
65
54
68
83
97
90
83
76
85
94
100
97
93
90
80
83
88

Low Clouds (% Sky Obscured)

41
40
40
51
49
37
38
39
41
32
23
22
33
39
48
41
38
41
52
60
59
56
68
80

Medium Clouds (% Sky Obscured)

2
3
3
18
36
54
41
28
15
29
43
57
39
22
4
20
36
52
68
84
90
80
83
88

High Clouds (% Sky Obscured)

0
0
0
2
4
7
7
5
0
8
29
46
32
11
5
17
21
25
25
25
25
25
15
5

ISS Passover

Visibility (miles)

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

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
Snow
Snow

Precipitation Probability (%)

8
7
5
11
13
12
20
21
19
19
15
2
4
5
2
6
6
3
18
25
31
39
44
48

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
0.1
0.1

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

60
60
60
62
67
72
78
81
85
89
85
82
79
83
87
92
94
92
92
92
92
92
92
92

Pressure (mb)

1006
1005
1005
1004
1005
1005
1006
1006
1007
1008
1008
1008
1008
1008
1008
1008
1007
1007
1007
1007
1007
1007
1006
1006

Ozone (du)

366
361
356
351
348
345
341
342
343
344
341
339
336
333
330
327
326
326
325
326
327
328
330
333

Thursday 1

Waxing Gibbous 98%

14:15

06:58

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 OK
05 OK
06 OK

Sun - Rise: 07:22, Set: 16:26, Transit: 11:54. Moon - Rise: 14:15, Set: 06:58. Civil Dark: 16:58 - 06:50. Nautical Dark: 17:34 - 06:14. Astro Dark: 18:08 - 05:40

Total Clouds (% Sky Obscured)

84
86
87
92
96
97
98
99
97
82
66
53
41
25
7
10
11
15
20
24
29

Low Clouds (% Sky Obscured)

82
86
87
92
96
97
90
81
74
63
52
42
29
17
4
7
9
12
15
18
22

Medium Clouds (% Sky Obscured)

84
86
87
90
90
95
98
99
97
68
37
5
3
2
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

5
15
20
13
8
0
0
0
0
0
0
0
0
0
0
1
1
2
3
5
6

ISS Passover

Visibility (miles)

0
0
0
0
0
0
0
3
6
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

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

Precipitation Probability (%)

55
60
73
70
65
59
62
56
38
28
20
2
4
4
1
3
4
2
7
11
8

Precipitation Amount (mm)

0.2
0.2
0.4
0.4
0.3
0.2
0.3
0.2
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

-5
-4
-3
-3
-4
-4
-4
-6
-8
-9
-10
-11
-13
-13
-13
-13
-13
-13
-14
-13
-12

Feels Like (°C)

-11
-10
-9
-9
-7
-6
-6
-6
-6
-6
-14
-15
-15
-16
-16
-17
-17
-16
-16
-15
-16

Dew Point (°C)

-6
-5
-4
-3
-4
-4
-5
-7
-10
-13
-14
-16
-18
-18
-18
-18
-17
-17
-16
-16
-16

Relative Humidity (%)

92
92
92
94
94
94
94
87
80
75
72
67
66
65
65
64
70
76
83
79
76

Pressure (mb)

1006
1005
1004
1003
1003
1003
1003
1005
1006
1007
1008
1009
1009
1009
1009
1009
1009
1010
1010
1010
1011

Ozone (du)

335
338
342
346
357
368
379
394
409
424
430
436
442
430
417
404
393
381
370
366
363

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

Generated: 26/12/25 10:03:17. Forecast: 26/12/25 to 01/01/26. Timezone: UTC-5.00