Clear Outside v1.0 - International Weather Forecasts For Astronomers

Saturday 27

First Quarter 52%

11:26

00:35

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

Sun - Rise: 07:34, Set: 16:14, Transit: 11:54. Moon - Rise: 11:26, Set: 00:35. Civil Dark: 16:48 - 06:59. Nautical Dark: 17:26 - 06:21. Astro Dark: 18:02 - 05:45

Total Clouds (% Sky Obscured)

81
68
52
68
5
4
2
2
2
3
2
2
2
2
5
10
2
1
2
2
2
6
24
47

Low Clouds (% Sky Obscured)

3
25
5
3
4
3
2
1
2
2
2
1
2
1
2
2
2
1
2
1
1
1
1
1

Medium Clouds (% Sky Obscured)

0
14
3
0
0
0
0
0
0
0
0
0
0
0
0
0
2
0
0
0
0
0
0
22

High Clouds (% Sky Obscured)

0
0
52
0
0
0
0
0
0
0
0
0
0
0
3
8
0
0
1
2
2
6
24
47

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
2
3
8
15
20
27
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 (%)

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)

9
9
7
5
4
2
1
3
3
4
4
4
4
4
4
4
4
4
4
4
3
3
3
4

Chance of Frost

Temperature (°C)

-11
-10
-9
-9
-9
-11
-12
-13
-14
-14
-15
-15
-15
-15
-16
-16
-16
-16
-16
-16
-17
-17
-15
-13

Feels Like (°C)

-14
-13
-13
-13
-10
-12
-14
-16
-16
-17
-18
-17
-18
-18
-18
-19
-19
-18
-19
-19
-19
-19
-18
-17

Dew Point (°C)

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

Relative Humidity (%)

75
75
78
78
85
83
83
84
86
86
84
86
84
84
84
83
85
84
85
84
84
84
84
81

Pressure (mb)

1024
1024
1023
1024
1024
1024
1024
1024
1025
1025
1025
1024
1024
1024
1024
1024
1024
1023
1024
1023
1023
1022
1023
1022

Ozone (du)

350
347
351
351
349
354
354
360
356
358
358
356
359
357
352
348
348
347
350
348
349
341
338
341

Sunday 28

Waxing Gibbous 63%

11:44

01:53

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
10 Bad

Sun - Rise: 07:34, Set: 16:14, Transit: 11:54. Moon - Rise: 11:44, Set: 01:53. Civil Dark: 16:49 - 06:59. Nautical Dark: 17:27 - 06:21. Astro Dark: 18:03 - 05:45

Total Clouds (% Sky Obscured)

73
73
81
87
74
83
100
98
76
93
100
100
100
100
100
100
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

1
1
1
2
2
21
14
24
5
4
1
1
1
2
3
7
14
73
83
81
86
83
91
70

Medium Clouds (% Sky Obscured)

38
53
81
86
68
67
69
82
31
24
47
51
64
71
85
100
100
100
100
100
100
100
100
100

High Clouds (% Sky Obscured)

54
45
58
78
74
83
100
97
76
87
100
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
6
1
0
0
0
2

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
Ice pellet
Frozen rai
Frozen rai
Frozen rai
Frozen rai
Frozen rai

Precipitation Probability (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
3
30
56
91
95
95
95
95

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.2
0.6
0.9
1.8
0.7
1.2

Wind Speed/Direction (mph)

4
4
2
3
3
1
2
4
4
4
5
6
6
7
8
9
10
12
13
11
11
12
11
9

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

-14
-13
-12
-11
-11
-11
-12
-12
-12
-13
-13
-12
-12
-12
-12
-11
-10
-10
-9
-8
-7
-6
-4
-2

Relative Humidity (%)

80
80
78
80
85
87
86
88
86
86
88
88
86
85
83
83
85
87
87
90
94
94
98
98

Pressure (mb)

1021
1020
1019
1018
1017
1016
1016
1015
1014
1013
1012
1010
1009
1007
1005
1005
1003
1001
999
998
995
994
993
992

Ozone (du)

344
342
340
337
335
336
338
338
340
341
343
338
339
337
332
330
328
328
332
331
329
327
333
337

Monday 29

Waxing Gibbous 74%

12:07

03:15

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
10 Bad

Sun - Rise: 07:34, Set: 16:15, Transit: 11:55. Moon - Rise: 12:07, Set: 03:15. Civil Dark: 16:50 - 07:00. Nautical Dark: 17:28 - 06:22. Astro Dark: 18:04 - 05:45

Total Clouds (% Sky Obscured)

100
100
100
100
98
100
100
79
73
91
100
100
99
95
100
100
100
100
99
100
100
100
100
100

Low Clouds (% Sky Obscured)

100
100
100
90
88
83
71
56
73
81
73
80
86
78
80
54
83
79
91
79
82
86
89
91

Medium Clouds (% Sky Obscured)

94
93
87
100
73
100
81
70
51
49
100
100
97
89
100
100
100
100
95
100
100
100
100
100

High Clouds (% Sky Obscured)

95
95
4
0
0
0
0
0
0
66
70
70
75
38
1
12
70
65
17
0
0
0
0
0

ISS Passover

Visibility (miles)

0
0
0
0
9
9
9
9
9
9
9
9
8
1
8
9
9
0
0
0
0
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

Frozen rai
Frozen rai
None
Very Light Rain
Snow
None
None
None
None
None
None
None
None
None
None
None
None
Snow
Snow
None
Snow
Snow
Snow
Snow

Precipitation Probability (%)

95
95
61
72
62
39
27
23
7
2
1
5
28
35
16
11
36
46
53
39
43
57
59
54

Precipitation Amount (mm)

0.9
0.6
0
0.3
0.2
0
0
0
0
0
0
0
0
0
0
0
0
0.1
0.2
0
0.1
0.3
0.3
0.2

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-5
-3
-4
-5
-6
-6
-5
-6
-4
-5
-8
-7
-7
-8
-8
-8
-10
-10
-11
-12
-13
-14
-16
-15

Dew Point (°C)

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

Relative Humidity (%)

100
100
100
100
84
78
78
77
83
89
89
91
91
91
92
90
87
94
94
94
92
94
92
92

Pressure (mb)

990
988
987
987
987
987
987
987
987
987
986
985
985
984
984
984
984
984
984
985
985
985
986
986

Ozone (du)

342
347
346
347
355
364
383
407
407
394
396
401
405
407
406
402
395
386
381
382
386
393
397
406

Tuesday 30

Waxing Gibbous 84%

12:34

04:40

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
10 Bad

Sun - Rise: 07:34, Set: 16:16, Transit: 11:55. Moon - Rise: 12:34, Set: 04:40. Civil Dark: 16:50 - 07:00. Nautical Dark: 17:28 - 06:22. Astro Dark: 18:05 - 05:45

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
99
99
99
99
98
96
94
95
95
96
98
97
97
97
78
60
46
68

Low Clouds (% Sky Obscured)

92
94
96
98
100
96
93
90
91
92
92
92
91
92
92
93
94
95
93
95
78
60
46
67

Medium Clouds (% Sky Obscured)

100
100
99
98
98
98
98
98
95
92
90
90
90
89
90
91
91
81
83
83
60
37
20
40

High Clouds (% Sky Obscured)

0
2
8
24
10
5
5
10
35
58
78
52
35
20
15
15
1
1
2
1
1
15
15
15

ISS Passover

Visibility (miles)

0
0
0
0
0
2
8
2
1
6
3
0
0
0
0
0
1
2
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
None
None
Snow
None
None
None
Snow
Snow
None
Snow
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

49
47
44
45
45
36
36
44
35
33
38
49
46
38
49
42
36
14
10
7
6
6
4
6

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

17
18
18
18
18
18
18
18
18
17
17
17
17
16
16
15
15
15
14
14
14
15
16
16

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-17
-16
-16
-15
-16
-16
-17
-17
-19
-19
-19
-20
-20
-21
-21
-20
-20
-20
-20
-20
-20
-20
-20
-20

Dew Point (°C)

-10
-10
-10
-10
-10
-11
-12
-13
-13
-15
-15
-15
-15
-15
-16
-16
-16
-16
-17
-17
-17
-17
-17
-16

Relative Humidity (%)

88
87
88
88
85
78
75
77
80
75
76
83
84
83
79
81
78
76
71
71
71
73
73
74

Pressure (mb)

986
986
986
987
987
988
989
990
991
992
993
993
994
994
994
995
996
996
997
997
998
999
1000
1001

Ozone (du)

411
417
423
430
439
440
442
448
452
455
459
449
439
431
431
428
425
423
420
416
410
406
405
402

Wednesday 31

Waxing Gibbous 92%

13:12

06:03

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
10 Bad

Sun - Rise: 07:34, Set: 16:17, Transit: 11:55. Moon - Rise: 13:12, Set: 06:03. Civil Dark: 16:51 - 07:00. Nautical Dark: 17:29 - 06:22. Astro Dark: 18:06 - 05:46

Total Clouds (% Sky Obscured)

81
95
90
86
84
89
95
100
53
100
100
100
100
100
99
98
98
98
99
100
90
77
64
48

Low Clouds (% Sky Obscured)

69
72
48
30
15
24
38
51
36
42
33
26
95
92
81
89
94
91
85
78
61
45
18
5

Medium Clouds (% Sky Obscured)

57
77
70
80
78
68
89
98
53
53
100
99
98
97
85
69
54
72
87
100
89
77
63
47

High Clouds (% Sky Obscured)

10
15
12
13
25
12
17
26
26
53
54
46
33
0
0
0
0
3
5
8
11
12
14
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 (%)

6
2
0
0
0
0
0
0
7
10
12
23
29
32
14
13
10
11
12
10
7
4
1
3

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
15
15
14
13
11
10
9
8
7
7
7
6
6
5
3
3
4
4
4
4
4
5
5

Chance of Frost

Temperature (°C)

-12
-11
-11
-11
-10
-11
-11
-11
-11
-12
-12
-11
-11
-11
-13
-14
-14
-15
-15
-15
-15
-14
-14
-13

Feels Like (°C)

-19
-19
-18
-18
-17
-17
-17
-17
-17
-16
-18
-17
-17
-16
-17
-17
-18
-18
-19
-19
-19
-19
-19
-19

Dew Point (°C)

-15
-15
-14
-15
-14
-15
-14
-14
-14
-15
-15
-14
-14
-14
-15
-16
-16
-17
-17
-17
-17
-17
-16
-16

Relative Humidity (%)

76
76
75
73
73
72
75
76
76
81
83
83
80
80
83
84
84
84
84
84
86
82
81
78

Pressure (mb)

1001
1001
1001
1001
1002
1002
1003
1004
1004
1004
1004
1004
1004
1004
1004
1003
1004
1004
1004
1004
1004
1005
1005
1005

Ozone (du)

408
397
394
390
385
389
389
384
387
383
382
385
387
385
380
373
366
360
358
357
355
356
357
358

Thursday 1

Waxing Gibbous 98%

14:03

07:15

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

Sun - Rise: 07:34, Set: 16:18, Transit: 11:56. Moon - Rise: 14:03, Set: 07:15. Civil Dark: 16:52 - 07:00. Nautical Dark: 17:30 - 06:22. Astro Dark: 18:06 - 05:46

Total Clouds (% Sky Obscured)

30
15
15
20
30
35
50
60
49
37
10
16
22
28
35
42
48
65
82
98
98
98
99
99

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
1
16
22
28
35
42
48
65
74
81
84
86
89
87

Medium Clouds (% Sky Obscured)

30
15
15
20
30
35
45
55
49
34
4
4
5
6
7
7
7
6
6
9
13
14
18
45

High Clouds (% Sky Obscured)

8
7
7
3
0
0
0
0
0
0
0
0
0
0
5
10
12
8
4
1
3
7
12
30

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
7
4
1
2
2
3
3
3
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
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 (%)

3
2
5
4
3
4
2
0
1
0
0
0
0
0
0
0
0
11
13
9
10
10
7
14

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)

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

Chance of Frost

Temperature (°C)

-13
-12
-12
-13
-13
-14
-15
-16
-17
-18
-19
-20
-20
-20
-20
-20
-19
-19
-18
-17
-17
-16
-15
-14

Feels Like (°C)

-19
-19
-19
-18
-18
-18
-19
-19
-19
-22
-22
-22
-22
-23
-23
-24
-23
-23
-23
-23
-23
-21
-21
-20

Dew Point (°C)

-16
-16
-17
-17
-17
-17
-18
-18
-19
-21
-22
-23
-23
-23
-23
-22
-22
-21
-20
-20
-19
-18
-17
-16

Relative Humidity (%)

75
72
69
73
76
81
79
79
80
78
77
75
75
75
75
78
79
80
80
81
80
82
82
84

Pressure (mb)

1005
1004
1004
1004
1004
1004
1004
1005
1005
1005
1006
1006
1006
1006
1005
1005
1005
1005
1005
1005
1004
1004
1004
1004

Ozone (du)

362
366
370
385
400
415
419
422
425
430
436
441
417
393
369
365
361
357
357
357
358
355
352
349

Friday 2

Waxing Gibbous 100%

15:09

08:11

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: 07:34, Set: 16:19, Transit: 11:56. Moon - Rise: 15:09, Set: 08:11. Civil Dark: 16:53 - 07:00. Nautical Dark: 17:31 - 06:22. Astro Dark: 18:07 - 05:46

Total Clouds (% Sky Obscured)

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

Low Clouds (% Sky Obscured)

87
86
84
85
89
89
90
92
88
82
74
78
82
85
83
84
86
86
87
89

Medium Clouds (% Sky Obscured)

72
100
100
100
99
99
100
100
70
41
11
12
12
13
34
55
77
82
86
90

High Clouds (% Sky Obscured)

62
94
63
33
2
1
1
1
1
1
1
1
1
1
3
4
5
5
5
5

ISS Passover

Visibility (miles)

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

Fog (%)

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

Precipitation Probability (%)

18
21
30
34
37
33
31
26
24
22
18
20
18
10
20
23
26
28
29
28

Precipitation Amount (mm)

0
0
0
0
0.1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-20
-19
-19
-15
-16
-16
-16
-17
-16
-16
-17
-16
-16
-16
-17
-19
-19
-19
-19
-19

Dew Point (°C)

-15
-14
-13
-13
-13
-13
-13
-13
-13
-14
-15
-15
-16
-17
-18
-17
-17
-16
-16
-17

Relative Humidity (%)

81
80
77
80
81
85
86
88
88
88
88
88
86
84
84
84
86
86
88
86

Pressure (mb)

1004
1003
1002
1002
1002
1003
1003
1003
1003
1004
1004
1004
1004
1004
1004
1004
1005
1005
1006
1006

Ozone (du)

355
360
366
378
391
404
406
408
409
415
420
426
430
435
440
440
439
439
438
437

Forecast for Sorel-Tracy, Montérégie, Canada (46.04,-73.11)

Generated: 27/12/25 11:22:08. Forecast: 27/12/25 to 02/01/26. Timezone: UTC-5.00