Clear Outside v1.0 - International Weather Forecasts For Astronomers

Saturday 27

First Quarter 52%

11:28

00:38

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

Sun - Rise: 07:38, Set: 16:14, Transit: 11:56. Moon - Rise: 11:28, Set: 00:38. Civil Dark: 16:49 - 07:03. Nautical Dark: 17:28 - 06:25. Astro Dark: 18:04 - 05:48

Total Clouds (% Sky Obscured)

99
100
97
99
85
89
57
63
34
18
2
0
5
0
0
0
24
0
0
1
1
2
2
2

Low Clouds (% Sky Obscured)

54
69
75
75
75
84
57
50
31
17
1
0
0
0
0
0
17
0
0
1
1
2
2
2

Medium Clouds (% Sky Obscured)

94
97
97
55
20
8
2
4
3
0
0
0
2
0
0
0
12
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

99
61
43
3
0
0
0
0
0
1
2
0
0
0
0
0
0
0
0
0
0
1
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 (%)

1
1
2
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
7
6
5
5
2
2
3
3
3
2
2
1
4
3
3
3
3
4
4
3
3
3
4

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-19
-19
-19
-19
-19
-18
-18
-18
-15
-14
-13
-11
-10
-11
-12
-14
-16
-17
-17
-18
-18
-18
-18
-18

Dew Point (°C)

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

Relative Humidity (%)

73
77
77
79
82
86
86
79
73
66
62
60
59
64
83
84
84
82
84
83
85
83
84
84

Pressure (mb)

1022
1022
1022
1022
1023
1024
1025
1025
1026
1025
1024
1024
1024
1024
1025
1025
1026
1026
1026
1026
1026
1026
1026
1026

Ozone (du)

329
330
330
338
338
342
347
350
351
355
357
353
349
345
346
349
356
358
359
358
357
363
363
361

Sunday 28

Waxing Gibbous 63%

11:46

01:57

02 OK
03 OK
04 OK
05 OK
06 OK
07 OK
08 OK
09 OK
10 Good
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

Sun - Rise: 07:38, Set: 16:15, Transit: 11:57. Moon - Rise: 11:46, Set: 01:57. Civil Dark: 16:50 - 07:04. Nautical Dark: 17:28 - 06:25. Astro Dark: 18:05 - 05:48

Total Clouds (% Sky Obscured)

1
1
2
3
7
16
7
30
17
95
74
62
100
100
100
99
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

1
1
1
2
1
1
1
0
0
0
1
1
25
9
18
34
40
39
58
58
49
38
72
84

Medium Clouds (% Sky Obscured)

0
0
0
0
0
5
2
8
6
84
74
62
99
92
100
96
98
78
69
85
94
98
97
82

High Clouds (% Sky Obscured)

0
0
2
3
5
7
7
30
17
95
59
62
100
100
100
95
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
9
8
5
9
4
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 (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
6
21
34
38

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)

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

Chance of Frost

Temperature (°C)

-16
-16
-17
-16
-16
-16
-15
-14
-11
-7
-5
-4
-4
-5
-6
-7
-8
-8
-7
-7
-7
-7
-7
-6

Feels Like (°C)

-18
-18
-18
-18
-18
-17
-17
-16
-14
-9
-9
-7
-7
-8
-9
-10
-10
-11
-11
-10
-10
-10
-10
-10

Dew Point (°C)

-18
-18
-19
-18
-18
-18
-18
-19
-16
-13
-11
-10
-9
-8
-7
-8
-9
-9
-8
-7
-7
-7
-8
-7

Relative Humidity (%)

83
82
82
81
80
81
79
65
65
64
63
65
66
77
90
92
88
88
94
94
94
94
94
94

Pressure (mb)

1026
1026
1025
1025
1025
1024
1024
1023
1023
1020
1019
1018
1017
1016
1016
1016
1015
1014
1013
1012
1011
1009
1008
1007

Ozone (du)

354
352
347
347
346
342
342
343
344
345
343
344
345
345
342
341
341
346
345
340
336
333
334
337

Monday 29

Waxing Gibbous 74%

12:08

01:57

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
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad
01 Bad

Sun - Rise: 07:39, Set: 16:16, Transit: 11:57. Moon - Rise: 12:08, Set: 01:57. Civil Dark: 16:51 - 07:04. Nautical Dark: 17:29 - 06:25. Astro Dark: 18:06 - 05:49

Total Clouds (% Sky Obscured)

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

Low Clouds (% Sky Obscured)

80
99
68
77
89
100
100
100
92
93
100
100
93
100
100
90
94
93
94
94
93
92
92
90

Medium Clouds (% Sky Obscured)

100
100
90
100
100
100
100
100
100
100
75
92
100
67
27
77
94
99
97
96
97
99
100
100

High Clouds (% Sky Obscured)

100
94
100
100
100
100
100
100
100
100
45
1
0
0
0
0
2
50
45
45
39
42
18
39

ISS Passover

Visibility (miles)

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

Fog (%)

0
0
0
0
0
0
0
0
1
2
8
13
12
33
0
0
0
0
0
0
0
0
0
0

Precipitation Type

None
None
Snow
Snow
Snow
Snow
Snow
Frozen rai
Frozen rai
Frozen rai
Frozen rai
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow

Precipitation Probability (%)

33
45
61
50
60
80
95
95
95
95
95
95
95
95
60
46
54
38
46
57
48
69
59
58

Precipitation Amount (mm)

0
0
0.3
0.2
0.2
0.3
1.4
1.4
1.8
2.2
0.9
0.9
1.2
0.8
0.2
0.1
0.2
0.1
0.2
0.2
0.1
0.5
0.2
0.2

Wind Speed/Direction (mph)

4
4
5
7
8
9
10
13
14
12
10
11
8
8
10
13
13
12
11
10
10
8
10
10

Chance of Frost

Temperature (°C)

-6
-6
-6
-6
-5
-6
-6
-6
-5
-5
-4
-4
-4
-3
-3
-3
-4
-4
-6
-7
-9
-10
-12
-13

Feels Like (°C)

-10
-9
-9
-10
-10
-10
-11
-12
-11
-11
-9
-9
-8
-7
-8
-9
-10
-10
-11
-12
-14
-15
-17
-17

Dew Point (°C)

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

Relative Humidity (%)

92
90
90
84
76
71
82
90
92
92
94
96
98
96
96
87
84
84
87
89
90
92
92
92

Pressure (mb)

1006
1004
1002
999
998
996
995
993
991
988
986
984
983
982
981
981
981
981
981
981
981
981
981
981

Ozone (du)

338
336
335
335
336
336
335
334
335
334
337
344
348
350
372
399
396
405
403
400
402
407
409
410

Tuesday 30

Waxing Gibbous 84%

12:35

03:20

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
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad
01 Bad

Sun - Rise: 07:39, Set: 16:17, Transit: 11:58. Moon - Rise: 12:35, Set: 03:20. Civil Dark: 16:52 - 07:04. Nautical Dark: 17:30 - 06:26. Astro Dark: 18:07 - 05:49

Total Clouds (% Sky Obscured)

100
100
99
97
97
98
99
100
100
100
100
99
99
98
99
99
100
97
94
91
93
96
100
100

Low Clouds (% Sky Obscured)

90
93
88
79
96
96
94
97
96
94
94
93
96
97
99
98
98
97
94
91
92
84
60
50

Medium Clouds (% Sky Obscured)

99
100
95
92
92
94
97
100
100
100
100
90
80
84
88
96
96
88
77
50
51
58
72
71

High Clouds (% Sky Obscured)

67
75
40
22
50
50
16
22
28
58
89
59
40
7
22
25
25
25
26
31
34
51
46
25

ISS Passover

Visibility (miles)

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

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

Precipitation Probability (%)

48
43
34
27
40
23
32
18
28
22
22
20
26
19
15
20
10
8
8
8
15
5
4
2

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

10
9
7
8
9
15
16
17
18
18
19
19
19
18
19
18
18
17
17
16
16
15
13
13

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-18
-17
-16
-17
-18
-20
-21
-22
-22
-22
-21
-22
-22
-23
-24
-24
-25
-25
-25
-25
-26
-26
-25
-26

Dew Point (°C)

-14
-14
-14
-14
-15
-15
-16
-17
-17
-17
-16
-17
-17
-18
-19
-19
-20
-20
-21
-21
-21
-22
-21
-22

Relative Humidity (%)

92
92
94
92
92
90
83
81
81
79
79
78
81
78
77
75
75
74
74
75
75
74
76
75

Pressure (mb)

981
981
982
982
984
984
986
987
988
989
989
989
990
992
993
994
995
996
997
997
998
999
999
999

Ozone (du)

412
411
405
398
394
394
403
413
421
423
422
416
422
426
432
447
451
448
444
439
435
426
422
423

Wednesday 31

Waxing Gibbous 92%

13:12

04:46

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
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad
01 Bad

Sun - Rise: 07:39, Set: 16:18, Transit: 11:58. Moon - Rise: 13:12, Set: 04:46. Civil Dark: 16:53 - 07:04. Nautical Dark: 17:31 - 06:26. Astro Dark: 18:07 - 05:49

Total Clouds (% Sky Obscured)

100
100
100
99
98
100
48
74
99
99
98
100
100
100
99
97
87
77
76
74
68
69
70
78

Low Clouds (% Sky Obscured)

35
35
49
66
82
82
48
32
58
92
92
32
34
45
38
49
61
61
62
63
64
66
68
71

Medium Clouds (% Sky Obscured)

85
100
100
59
59
95
48
65
82
51
21
70
78
83
78
72
46
32
9
2
2
2
1
30

High Clouds (% Sky Obscured)

64
60
65
35
0
60
6
38
65
25
27
32
44
55
41
34
20
10
2
0
0
0
1
15

ISS Passover

Visibility (miles)

5
7
6
7
7
8
9
9
9
9
1
1
1
1
1
2
3
4
5
5
6
7
8
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
2
7
11
15
18
19
20
20
19
20
19
19
19
16
13
4
7
6
1
3
3
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-26
-25
-25
-25
-25
-25
-24
-22
-22
-21
-21
-19
-19
-19
-19
-19
-18
-18
-21
-22
-22
-23
-23
-23

Dew Point (°C)

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

Relative Humidity (%)

75
76
77
76
76
77
77
74
70
76
77
81
79
79
81
79
79
79
78
77
78
77
76
74

Pressure (mb)

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

Ozone (du)

411
400
380
373
383
379
376
370
370
369
371
371
377
383
388
389
389
390
390
390
390
385
380
375

Thursday 1

Waxing Gibbous 98%

14:03

06:09

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
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad
01 Bad

Sun - Rise: 07:39, Set: 16:19, Transit: 11:59. Moon - Rise: 14:03, Set: 06:09. Civil Dark: 16:53 - 07:04. Nautical Dark: 17:32 - 06:26. Astro Dark: 18:08 - 05:49

Total Clouds (% Sky Obscured)

87
97
97
93
93
89
85
81
85
92
100
99
99
98
99
99
100
100
100
100
96
91
87
90

Low Clouds (% Sky Obscured)

74
78
80
82
84
84
85
67
43
47
51
62
70
78
82
84
86
81
80
77
66
53
41
45

Medium Clouds (% Sky Obscured)

59
86
88
87
90
81
71
64
75
87
100
99
97
96
97
98
100
96
91
87
80
76
74
74

High Clouds (% Sky Obscured)

32
53
49
48
41
37
33
27
51
76
100
72
38
7
8
9
12
7
4
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
8
8
7
7
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

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

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)

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

Chance of Frost

Temperature (°C)

-21
-22
-23
-23
-24
-24
-23
-21
-20
-19
-18
-17
-17
-18
-19
-19
-18
-18
-19
-19
-19
-20
-22
-23

Feels Like (°C)

-26
-26
-26
-26
-26
-26
-29
-28
-28
-27
-26
-25
-20
-21
-21
-21
-20
-20
-22
-22
-22
-21
-22
-22

Dew Point (°C)

-24
-25
-25
-26
-27
-27
-26
-25
-24
-24
-23
-22
-21
-21
-21
-21
-21
-21
-21
-22
-22
-22
-24
-26

Relative Humidity (%)

75
75
77
77
75
75
72
69
68
66
65
63
69
74
80
80
82
83
82
82
82
82
78
77

Pressure (mb)

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

Ozone (du)

371
366
362
358
355
351
353
355
357
361
366
370
371
372
373
387
401
415
422
428
434
435
436
437

Friday 2

Waxing Gibbous 100%

15:09

07:21

Sun - Rise: 07:39, Set: 16:20, Transit: 11:59. Moon - Rise: 15:09, Set: 07:21. Civil Dark: 16:54 - 07:04. Nautical Dark: 17:33 - 06:26. Astro Dark: 18:09 - 05:49

Total Clouds (% Sky Obscured)

Low Clouds (% Sky Obscured)

Medium Clouds (% Sky Obscured)

High Clouds (% Sky Obscured)

ISS Passover

Visibility (miles)

Fog (%)

Precipitation Type

Precipitation Probability (%)

Precipitation Amount (mm)

Wind Speed/Direction (mph)

Chance of Frost

Temperature (°C)

Feels Like (°C)

Dew Point (°C)

Relative Humidity (%)

Pressure (mb)

Ozone (du)

Forecast for Lac-Saint-Louis, Lanaudière, Canada (46.57,-73.80)

Generated: 27/12/25 02:50:55. Forecast: 27/12/25 to 02/01/26. Timezone: UTC-5.00