Clear Outside v1.0 - International Weather Forecasts For Astronomers

Saturday 27

First Quarter 52%

11:30

00:40

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

Sun - Rise: 07:40, Set: 16:17, Transit: 11:58. Moon - Rise: 11:30, Set: 00:40. Civil Dark: 16:52 - 07:05. Nautical Dark: 17:30 - 06:27. Astro Dark: 18:07 - 05:50

Total Clouds (% Sky Obscured)

72
45
27
16
12
1
4
22
4
1
4
1
0
0
1
1
6
4
9
3
4
1
8
1

Low Clouds (% Sky Obscured)

72
45
26
16
12
1
0
0
0
1
2
1
0
0
1
1
1
1
2
2
2
1
2
1

Medium Clouds (% Sky Obscured)

12
0
0
0
0
0
3
16
3
1
2
0
0
0
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

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

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
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-20
-20
-18
-16
-14
-11
-10
-10
-10
-11
-13
-14
-15
-15
-15
-16
-15
-15
-17
-18
-17
-16
-16
-18

Dew Point (°C)

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

Relative Humidity (%)

80
83
74
65
61
56
56
55
63
81
83
84
83
83
84
83
84
84
84
84
84
84
82
84

Pressure (mb)

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

Ozone (du)

345
341
344
345
344
344
344
344
346
346
353
354
353
352
350
351
355
351
345
343
343
341
342
341

Sunday 28

Waxing Gibbous 63%

11:49

01:59

07 OK
08 OK
09 OK
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: 07:40, Set: 16:18, Transit: 11:59. Moon - Rise: 11:49, Set: 01:59. Civil Dark: 16:52 - 07:05. Nautical Dark: 17:31 - 06:27. Astro Dark: 18:07 - 05:51

Total Clouds (% Sky Obscured)

35
29
43
78
57
69
100
100
100
100
100
100
97
100
100
100
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

2
2
1
0
0
15
27
24
28
27
34
30
30
30
55
29
20
14
67
63
60
57
58
77

Medium Clouds (% Sky Obscured)

13
19
41
78
57
69
100
100
64
100
97
66
81
78
87
97
72
100
91
84
88
100
100
100

High Clouds (% Sky Obscured)

35
29
35
40
57
68
90
99
100
100
100
100
93
100
100
100
100
100
100
99
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
4
9
2
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
Snow
None
None
None
None

Precipitation Probability (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
3
3
3
4
7
32
25
30
42
54

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

1
1
1
1
1
2
2
2
2
1
2
2
3
3
3
3
4
4
4
5
6
5
7
8

Chance of Frost

Temperature (°C)

-15
-15
-14
-12
-8
-6
-4
-4
-4
-5
-6
-6
-6
-7
-7
-7
-7
-7
-7
-6
-6
-5
-5
-4

Feels Like (°C)

-16
-18
-17
-15
-12
-9
-8
-7
-7
-8
-9
-9
-10
-10
-10
-11
-11
-11
-10
-10
-10
-10
-9
-9

Dew Point (°C)

-17
-17
-18
-17
-13
-11
-10
-9
-7
-7
-7
-8
-8
-8
-9
-9
-8
-9
-9
-9
-8
-8
-7
-7

Relative Humidity (%)

82
82
71
69
67
67
66
69
78
89
92
89
87
87
87
87
90
89
85
79
82
82
84
84

Pressure (mb)

1024
1023
1022
1021
1020
1018
1017
1016
1015
1015
1015
1014
1013
1012
1011
1010
1008
1007
1005
1004
1002
1001
999
997

Ozone (du)

340
341
341
340
339
336
338
337
338
336
335
338
338
336
335
333
330
333
334
336
334
334
333
334

Monday 29

Waxing Gibbous 74%

12:10

03:22

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
02 Bad
03 Bad
04 Bad
05 Bad
06 Bad

Sun - Rise: 07:40, Set: 16:18, Transit: 11:59. Moon - Rise: 12:10, Set: 03:22. Civil Dark: 16:53 - 07:05. Nautical Dark: 17:31 - 06:27. Astro Dark: 18:08 - 05:51

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
98
94
96
97
100
100
100
100
100
100
100
100
99
97
96

Low Clouds (% Sky Obscured)

83
82
100
100
85
100
100
97
95
98
94
88
79
77
100
99
95
96
91
96
97
93
89
96

Medium Clouds (% Sky Obscured)

100
100
100
95
96
92
100
98
100
71
19
60
88
100
95
94
100
100
100
100
100
93
86
80

High Clouds (% Sky Obscured)

100
100
100
100
45
0
0
0
0
0
0
50
65
55
37
67
96
8
21
16
0
36
35
35

ISS Passover

Visibility (miles)

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

Fog (%)

0
0
0
1
2
12
30
27
4
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Type

Snow
Snow
Frozen rai
Frozen rai
Frozen rai
Frozen rai
Frozen rai
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow

Precipitation Probability (%)

95
95
95
89
95
95
95
95
95
72
55
45
46
55
61
66
54
55
40
52
63
58
51
45

Precipitation Amount (mm)

1.3
1.8
0.5
0.5
0.9
0.7
1
1.3
0.9
0.3
0.2
0.1
0.1
0.2
0.2
0.4
0.2
0.2
0.1
0.2
0.3
0.2
0.2
0.2

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-9
-10
-10
-10
-10
-9
-8
-8
-8
-9
-9
-8
-8
-9
-9
-8
-10
-12
-13
-15
-15
-16
-17
-19

Dew Point (°C)

-6
-5
-6
-6
-5
-4
-4
-4
-3
-4
-5
-4
-5
-5
-6
-6
-7
-9
-11
-12
-13
-14
-15
-16

Relative Humidity (%)

84
92
92
92
94
96
94
94
94
87
87
87
87
89
89
90
92
92
88
94
92
92
94
92

Pressure (mb)

995
993
991
990
988
986
985
984
983
983
983
983
982
982
981
981
981
981
981
982
982
983
984
985

Ozone (du)

331
331
337
341
343
345
348
355
372
390
403
403
402
404
405
412
414
413
407
405
396
386
379
387

Tuesday 30

Waxing Gibbous 84%

12:38

04:47

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
02 Bad
03 Bad
04 Bad
05 Bad
06 Bad

Sun - Rise: 07:40, Set: 16:19, Transit: 12:00. Moon - Rise: 12:38, Set: 04:47. Civil Dark: 16:54 - 07:06. Nautical Dark: 17:32 - 06:27. Astro Dark: 18:09 - 05:51

Total Clouds (% Sky Obscured)

96
97
97
98
99
100
100
99
99
100
100
100
98
97
97
97
98
99
99
99
99
99
98
87

Low Clouds (% Sky Obscured)

96
97
97
98
99
99
99
99
99
100
100
99
98
97
97
96
96
95
97
95
95
95
95
83

Medium Clouds (% Sky Obscured)

82
83
86
92
95
95
94
88
82
71
94
100
85
70
55
75
83
85
83
85
84
83
64
46

High Clouds (% Sky Obscured)

32
2
30
31
12
36
45
54
67
76
87
100
77
55
28
22
11
0
9
4
8
8
12
2

ISS Passover

Visibility (miles)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
8

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

Precipitation Probability (%)

42
45
44
43
42
36
34
39
39
30
28
29
30
35
33
33
40
40
32
25
20
21
14
15

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

88
86
84
84
83
84
83
83
82
82
80
80
79
79
80
79
81
80
80
78
78
78
78
75

Pressure (mb)

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

Ozone (du)

396
398
399
405
412
424
425
431
438
450
449
452
446
443
435
429
423
418
415
412
406
412
417
392

Wednesday 31

Waxing Gibbous 92%

13:15

06:10

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
02 Bad
03 Bad
04 Bad
05 Bad
06 Bad

Sun - Rise: 07:40, Set: 16:20, Transit: 12:00. Moon - Rise: 13:15, Set: 06:10. Civil Dark: 16:55 - 07:06. Nautical Dark: 17:33 - 06:28. Astro Dark: 18:10 - 05:51

Total Clouds (% Sky Obscured)

74
99
95
93
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
98
94
91

Low Clouds (% Sky Obscured)

56
72
72
80
91
91
91
91
93
92
88
86
86
82
76
77
80
87
88
89
91
89
81
79

Medium Clouds (% Sky Obscured)

61
96
93
72
48
56
96
60
60
59
57
56
57
53
49
48
62
61
62
63
69
53
35
18

High Clouds (% Sky Obscured)

16
76
54
30
30
34
25
16
7
6
3
0
0
0
0
0
0
0
0
0
0
0
0
0

ISS Passover

Visibility (miles)

9
9
9
4
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
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

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

Precipitation Probability (%)

17
19
22
34
37
45
46
44
41
41
34
33
40
31
18
17
14
12
12
11
9
8
7
3

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

9
9
9
9
8
7
7
7
7
8
8
8
8
8
7
6
6
6
6
6
5
5
5
5

Chance of Frost

Temperature (°C)

-20
-19
-17
-16
-15
-14
-13
-13
-13
-13
-14
-15
-16
-17
-17
-18
-19
-19
-20
-20
-21
-22
-23
-24

Feels Like (°C)

-26
-25
-24
-22
-21
-20
-19
-19
-19
-19
-20
-21
-22
-22
-23
-23
-23
-24
-24
-26
-26
-27
-27
-27

Dew Point (°C)

-23
-22
-20
-19
-17
-16
-15
-15
-15
-16
-16
-17
-18
-19
-20
-21
-22
-22
-23
-23
-24
-24
-25
-26

Relative Humidity (%)

72
76
78
77
82
81
83
83
83
83
83
82
81
79
79
78
77
77
77
75
76
77
77
76

Pressure (mb)

1001
1002
1002
1002
1001
1000
999
999
999
1000
1001
1002
1003
1003
1004
1005
1005
1006
1006
1006
1007
1007
1008
1008

Ozone (du)

383
380
379
376
380
384
390
404
419
421
421
425
427
424
420
417
413
408
403
394
385
376
371
366

Thursday 1

Waxing Gibbous 98%

14:05

No Set

07 Bad
08 Bad
09 OK
10 OK
11 OK
12 OK
13 OK
14 OK
15 OK
16 OK
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: 07:40, Set: 16:21, Transit: 12:01. Moon - Rise: 14:05, Set: No Set. Civil Dark: 16:56 - 07:06. Nautical Dark: 17:34 - 06:28. Astro Dark: 18:11 - 05:51

Total Clouds (% Sky Obscured)

63
33
0
0
0
0
0
0
5
25
55
56
70
84
98
99
99
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

53
26
0
0
0
0
0
0
0
0
0
0
8
16
42
59
73
87
80
74
63
64
66
67

Medium Clouds (% Sky Obscured)

14
9
0
0
0
0
0
0
5
25
50
36
46
56
67
68
70
72
49
33
18
61
70
87

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
3
2
3
1
0
1
6
12
16

ISS Passover

Visibility (miles)

3
4
6
8
9
9
9
9
9
9
8
6
4
3
2
1
1
2
2
2
2
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

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
0
0
0
0
0
0
0
0
0
0
0
1
1
7
8
10
8
9
11
11
12
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)

4
4
4
5
5
6
7
6
5
4
4
4
3
3
3
3
3
3
3
3
3
3
3
4

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-27
-30
-29
-28
-28
-27
-26
-21
-21
-22
-21
-21
-21
-27
-27
-27
-27
-26
-26
-28
-28
-28
-29
-29

Dew Point (°C)

-27
-26
-26
-24
-23
-22
-21
-21
-21
-21
-23
-24
-26
-26
-26
-26
-26
-27
-27
-27
-28
-28
-27
-27

Relative Humidity (%)

76
75
72
70
72
70
69
72
75
78
78
77
77
76
77
78
77
76
76
75
74
75
75
76

Pressure (mb)

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

Ozone (du)

362
364
366
367
368
370
371
376
382
388
398
408
419
425
431
437
438
440
442
436
430
424
415
405

Friday 2

Waxing Gibbous 100%

15:12

07:22

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

Sun - Rise: 07:40, Set: 16:22, Transit: 12:01. Moon - Rise: 15:12, Set: 07:22. Civil Dark: 16:57 - 07:06. Nautical Dark: 17:35 - 06:28. Astro Dark: 18:11 - 05:51

Total Clouds (% Sky Obscured)

99
99
98
99
99
100
100
100
100
100
100
100
100
99
99
93
86
80

Low Clouds (% Sky Obscured)

74
81
88
87
87
89
90
91
91
91
90
90
91
92
94
90
85
80

Medium Clouds (% Sky Obscured)

93
98
98
98
99
96
96
93
94
96
95
94
94
91
66
52
32
22

High Clouds (% Sky Obscured)

10
12
20
17
11
2
9
17
27
22
28
17
6
4
2
3
1
0

ISS Passover

Visibility (miles)

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

Fog (%)

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

Precipitation Probability (%)

14
13
14
18
22
24
27
30
33
32
31
31
30
30
31
31
31
32

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-29
-27
-27
-27
-26
-26
-26
-23
-23
-23
-22
-22
-21
-24
-24
-23
-24
-25

Dew Point (°C)

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

Relative Humidity (%)

77
75
72
70
68
68
67
69
71
74
75
76
77
77
77
78
76
76

Pressure (mb)

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

Ozone (du)

396
396
396
396
390
384
378
382
387
391
406
421
436
434
432
430
431
432

Forecast for Lac-Lajoie, Lanaudière, Canada (46.46,-74.31)

Generated: 27/12/25 07:45:29. Forecast: 27/12/25 to 02/01/26. Timezone: UTC-5.00