Clear Outside v1.0 - International Weather Forecasts For Astronomers

Sunday 28

Waxing Gibbous 63%

11:46

01:51

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: 07:31, Set: 16:17, Transit: 11:54. Moon - Rise: 11:46, Set: 01:51. Civil Dark: 16:51 - 06:57. Nautical Dark: 17:29 - 06:20. Astro Dark: 18:04 - 05:44

Total Clouds (% Sky Obscured)

87
100
100
96
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
1
5
12
37
62
88
100
98
91
100
100
91
73
70

Medium Clouds (% Sky Obscured)

23
2
3
4
37
83
96
98
86
87
92
100
100
100
100
100
100
100
100
100
100
100
79
100

High Clouds (% Sky Obscured)

87
100
100
94
99
100
100
100
100
100
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
3
0
0
1
2
1
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
Snow
Frozen rai
Frozen rai
Frozen rai
Frozen rai
Frozen rai
Frozen rai
Frozen rai
Frozen rai
Frozen rai
Frozen rai

Precipitation Probability (%)

0
0
0
0
0
0
0
0
0
0
0
2
11
56
95
95
95
95
95
95
95
95
95
95

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0.1
1.2
1.8
1
1.5
2
1.5
0.6
1.1
1.4
0.6

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

-13
-11
-10
-7
-6
-6
-7
-8
-7
-7
-7
-7
-6
-6
-5
-4
-3
-2
-1
0
1
1
1
1

Feels Like (°C)

-17
-15
-13
-10
-10
-10
-11
-12
-11
-11
-11
-11
-10
-9
-8
-8
-5
-4
-4
-3
-2
-2
-2
-2

Dew Point (°C)

-17
-15
-14
-11
-10
-9
-9
-10
-9
-9
-9
-9
-8
-8
-6
-5
-3
-2
-2
-0
0
1
1
1

Relative Humidity (%)

74
72
69
71
76
84
85
85
85
87
85
85
85
85
87
94
96
96
96
98
98
98
98
98

Pressure (mb)

1022
1021
1019
1018
1017
1016
1015
1014
1014
1012
1011
1009
1008
1006
1004
1002
1001
999
997
995
995
993
993
991

Ozone (du)

330
331
330
329
328
328
327
325
322
322
322
327
331
331
330
331
329
326
326
320
321
327
328
326

Monday 29

Waxing Gibbous 74%

12:09

03:13

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: 07:31, Set: 16:18, Transit: 11:54. Moon - Rise: 12:09, Set: 03:13. Civil Dark: 16:52 - 06:57. Nautical Dark: 17:29 - 06:20. Astro Dark: 18:05 - 05:44

Total Clouds (% Sky Obscured)

100
100
100
99
100
100
100
98
83
91
94
87
65
100
91
95
100
96
97
100
100
100
98
97

Low Clouds (% Sky Obscured)

100
91
100
85
94
97
97
85
73
73
77
52
65
100
50
82
98
89
88
100
100
100
94
93

Medium Clouds (% Sky Obscured)

100
98
100
52
60
100
100
55
31
68
70
59
53
56
82
74
87
87
87
84
84
91
81
78

High Clouds (% Sky Obscured)

100
97
33
0
0
0
0
0
53
71
0
0
0
0
0
0
0
0
0
0
0
0
0
0

ISS Passover

Visibility (miles)

0
0
0
0
0
7
7
9
9
9
4
9
9
9
3
0
0
0
4
3
4
2
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

Light Rain
Light Rain
Moderate Rain
Light Rain
Very Light Rain
Light Rain
None
None
None
None
None
None
None
Snow
Snow
Snow
Snow
None
None
None
Snow
None
None
None

Precipitation Probability (%)

95
95
95
95
74
81
61
44
10
6
24
16
25
48
52
61
55
35
33
40
45
37
38
34

Precipitation Amount (mm)

0.8
0.9
2.5
1.4
0.3
0.4
0
0
0
0
0
0
0
0.2
0.2
0.3
0.2
0
0
0
0.1
0
0
0

Wind Speed/Direction (mph)

4
4
4
7
8
7
10
9
11
11
10
10
12
14
16
16
17
19
18
18
18
19
21
22

Chance of Frost

Temperature (°C)

2
2
2
2
2
2
2
1
-1
-1
-1
-2
-2
-3
-4
-6
-8
-9
-10
-11
-11
-11
-12
-12

Feels Like (°C)

-2
-1
-1
-4
-5
-3
-4
-5
-4
-6
-6
-7
-8
-7
-10
-12
-16
-19
-20
-20
-19
-19
-20
-21

Dew Point (°C)

2
2
2
2
1
0
-1
-2
-2
-3
-4
-4
-6
-7
-6
-7
-9
-11
-13
-13
-13
-14
-14
-14

Relative Humidity (%)

100
100
100
100
98
88
83
84
91
87
83
81
72
73
82
94
92
87
81
81
81
80
81
83

Pressure (mb)

990
988
987
988
987
987
987
987
987
987
986
986
985
984
985
985
987
988
988
989
989
990
991
992

Ozone (du)

329
336
335
331
335
344
360
385
386
391
399
405
408
394
389
385
387
387
382
379
383
391
396
397

Tuesday 30

Waxing Gibbous 84%

12:37

04:37

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: 07:31, Set: 16:19, Transit: 11:55. Moon - Rise: 12:37, Set: 04:37. Civil Dark: 16:53 - 06:57. Nautical Dark: 17:30 - 06:20. Astro Dark: 18:06 - 05:44

Total Clouds (% Sky Obscured)

100
98
100
97
100
100
100
100
100
98
100
96
98
100
100
100
90
94
73
55
55
69
83
98

Low Clouds (% Sky Obscured)

100
93
88
87
100
100
100
100
92
89
90
90
96
100
100
100
78
63
7
9
15
18
16
23

Medium Clouds (% Sky Obscured)

85
92
98
90
43
97
100
100
100
94
99
92
93
93
95
91
42
82
73
50
50
65
80
94

High Clouds (% Sky Obscured)

0
4
0
0
0
80
98
78
82
50
100
33
25
8
2
2
34
42
7
55
3
11
20
3

ISS Passover

Visibility (miles)

0
0
0
0
0
0
0
0
0
0
0
0
0
9
9
9
9
9
9
9
9
9
8
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
Snow
Snow
Snow
Snow
None
Snow
Snow
Snow
Snow
Snow
Snow
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

36
42
53
45
40
34
45
49
54
56
49
43
35
22
20
15
15
7
1
1
1
4
7
20

Precipitation Amount (mm)

0
0.1
0.2
0.2
0.1
0
0.1
0.2
0.2
0.3
0.2
0.1
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

22
22
21
21
21
20
19
18
18
18
18
18
18
17
17
16
16
15
15
14
12
11
11
11

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-22
-21
-21
-22
-22
-21
-22
-22
-21
-22
-22
-22
-22
-22
-22
-22
-21
-21
-21
-20
-20
-19
-19
-18

Dew Point (°C)

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

Relative Humidity (%)

83
84
84
84
83
81
83
84
84
84
83
83
81
74
73
72
71
72
73
74
74
78
79
84

Pressure (mb)

993
993
993
993
994
994
995
995
996
996
996
996
996
997
997
997
998
998
998
998
998
999
999
999

Ozone (du)

406
411
425
441
437
440
453
444
438
440
443
440
437
438
445
446
432
420
404
397
397
388
385
389

Wednesday 31

Waxing Gibbous 92%

13:15

05:58

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 Bad
00 Bad
01 Bad
02 Bad
03 Bad
04 Bad
05 Bad
06 Bad
07 Bad
08 Bad
09 Bad

Sun - Rise: 07:31, Set: 16:20, Transit: 11:55. Moon - Rise: 13:15, Set: 05:58. Civil Dark: 16:54 - 06:57. Nautical Dark: 17:31 - 06:20. Astro Dark: 18:07 - 05:44

Total Clouds (% Sky Obscured)

97
98
97
98
99
100
100
100
100
100
100
100
91
53
49
69
42
68
77
80
59
46
46
75

Low Clouds (% Sky Obscured)

41
63
79
77
80
86
87
90
91
92
93
96
83
25
25
55
14
55
68
73
20
26
30
67

Medium Clouds (% Sky Obscured)

95
94
94
95
98
100
100
100
86
61
64
47
42
43
38
30
31
30
30
29
38
20
15
28

High Clouds (% Sky Obscured)

3
2
0
7
0
0
21
41
61
41
20
0
0
0
0
0
0
0
0
0
0
0
0
0

ISS Passover

Visibility (miles)

0
0
0
1
0
3
7
0
0
0
1
7
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
Snow
Snow
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

21
27
19
27
37
20
35
37
32
26
22
22
21
19
16
15
14
7
9
7
5
7
6
3

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

11
11
11
11
9
7
5
4
3
4
4
4
5
5
5
5
5
6
6
7
7
6
7
9

Chance of Frost

Temperature (°C)

-12
-11
-10
-9
-9
-9
-9
-10
-10
-11
-11
-11
-12
-13
-14
-15
-16
-16
-17
-17
-17
-18
-18
-16

Feels Like (°C)

-17
-16
-14
-13
-13
-13
-13
-14
-14
-16
-16
-18
-18
-19
-18
-18
-20
-20
-21
-22
-22
-22
-21
-20

Dew Point (°C)

-13
-12
-11
-11
-10
-10
-11
-11
-11
-12
-13
-14
-15
-16
-17
-17
-18
-19
-19
-20
-20
-21
-21
-19

Relative Humidity (%)

88
86
88
85
90
87
90
94
92
88
85
81
78
78
79
79
79
79
80
79
77
78
80
80

Pressure (mb)

999
999
998
998
998
998
998
999
999
1000
1000
1000
1001
1001
1002
1002
1003
1004
1004
1005
1005
1006
1007
1007

Ozone (du)

390
395
397
403
410
419
421
417
417
424
427
432
432
431
432
432
428
429
422
402
394
385
377
372

Thursday 1

Waxing Gibbous 98%

14:07

07:10

10 Bad
11 Bad
12 Bad
13 Bad
14 Bad
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
07 Bad
08 Bad
09 Bad

Sun - Rise: 07:31, Set: 16:21, Transit: 11:56. Moon - Rise: 14:07, Set: 07:10. Civil Dark: 16:55 - 06:57. Nautical Dark: 17:32 - 06:20. Astro Dark: 18:07 - 05:44

Total Clouds (% Sky Obscured)

58
92
93
96
59
38
31
61
53
93
92
90
95
95
90
97
99
100
98
95
93
95
97
99

Low Clouds (% Sky Obscured)

53
82
86
88
59
38
31
61
53
52
48
50
60
70
70
94
97
100
96
92
88
86
88
89

Medium Clouds (% Sky Obscured)

6
4
2
4
7
6
3
1
0
0
1
14
15
12
44
68
51
34
30
25
21
41
60
77

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
11
6
0
1
2
4
26
52
75

ISS Passover

Visibility (miles)

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

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
6
6
8
10
11
9
7
4
3
4
3
5
10
9
21
20
15
19
18
10
11
11
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

74
70
71
70
73
78
80
80
79
79
79
79
79
84
86
88
86
86
86
86
86
86
84
81

Pressure (mb)

1008
1007
1007
1006
1007
1007
1007
1007
1008
1008
1008
1008
1008
1008
1007
1007
1006
1006
1006
1006
1006
1007
1007
1007

Ozone (du)

369
365
362
363
370
381
390
391
387
391
391
388
375
370
368
372
369
366
362
359
357
354
357
360

Friday 2

Waxing Gibbous 100%

15:14

08:07

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: 07:31, Set: 16:22, Transit: 11:56. Moon - Rise: 15:14, Set: 08:07. Civil Dark: 16:55 - 06:57. Nautical Dark: 17:33 - 06:20. Astro Dark: 18:08 - 05:44

Total Clouds (% Sky Obscured)

93
88
84
79
75
71
68
65
60
69
81
93
95
97
99
99
99
99
99
100
99
99
99
99

Low Clouds (% Sky Obscured)

86
82
77
74
72
69
65
50
42
57
72
88
91
93
95
91
87
83
85
86
87
90
94
96

Medium Clouds (% Sky Obscured)

73
67
63
60
56
51
51
50
45
51
63
76
79
87
96
87
78
68
58
50
40
56
69
82

High Clouds (% Sky Obscured)

76
66
17
7
3
0
1
1
1
5
7
7
3
4
13
15
8
0
1
1
1
2
3
5

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
8
7
5
2
0
0
0
0
0
1
1
1
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
Snow
Snow
Snow
Snow
None
None
None
Snow
Snow

Precipitation Probability (%)

10
9
7
10
9
6
7
7
4
11
12
11
24
31
36
39
41
42
33
29
27
32
35
36

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

8
9
9
10
9
8
7
7
7
7
8
8
8
8
7
8
6
5
5
4
3
3
3
4

Chance of Frost

Temperature (°C)

-11
-10
-9
-9
-10
-10
-10
-11
-11
-12
-12
-11
-11
-10
-10
-9
-9
-9
-9
-9
-10
-11
-10
-10

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

80
81
80
78
81
85
86
86
85
85
85
85
85
86
88
92
90
90
87
87
86
85
86
85

Pressure (mb)

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

Ozone (du)

364
364
365
365
367
370
373
378
383
388
399
409
420
418
417
415
412
410
407
407
406
405
403
401

Saturday 3

Full Moon 99%

16:32

08:49

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 OK
01 OK
02 OK
03 OK
04 OK
05 OK
06 OK

Sun - Rise: 07:31, Set: 16:23, Transit: 11:57. Moon - Rise: 16:32, Set: 08:49. Civil Dark: 16:56 - 06:57. Nautical Dark: 17:33 - 06:20. Astro Dark: 18:09 - 05:44

Total Clouds (% Sky Obscured)

99
98
98
98
99
99
97
100
100
95
91
82
64
38
19
13
7
3
4
5
6

Low Clouds (% Sky Obscured)

93
90
88
90
93
96
86
80
74
73
65
58
42
25
9
7
4
2
2
2
3

Medium Clouds (% Sky Obscured)

84
87
91
96
99
99
87
69
57
38
19
0
0
0
0
0
0
0
1
1
2

High Clouds (% Sky Obscured)

7
8
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
2

ISS Passover

Visibility (miles)

0
3
6
9
7
4
1
4
7
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
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

36
36
37
32
28
24
23
22
12
20
19
3
4
3
1
2
1
0
1
1
0

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

5
6
8
10
10
11
12
11
10
9
8
8
7
6
5
5
4
3
3
3
4

Chance of Frost

Temperature (°C)

-9
-9
-9
-9
-10
-10
-11
-12
-13
-14
-15
-17
-18
-18
-19
-20
-21
-21
-22
-22
-22

Feels Like (°C)

-15
-15
-15
-14
-15
-15
-15
-16
-16
-17
-20
-20
-20
-21
-22
-22
-24
-24
-24
-24
-24

Dew Point (°C)

-11
-11
-11
-12
-12
-13
-13
-14
-15
-16
-18
-19
-20
-21
-22
-23
-23
-24
-24
-25
-25

Relative Humidity (%)

85
83
82
78
81
83
85
83
81
79
79
80
80
79
78
77
75
76
75
76
76

Pressure (mb)

1009
1009
1009
1009
1009
1010
1011
1013
1014
1015
1016
1017
1018
1019
1019
1020
1021
1021
1022
1023
1023

Ozone (du)

399
404
408
412
413
414
415
414
414
414
412
410
409
405
401
397
393
389
386
384
382

Forecast for Domaine-Joyeux, Montérégie, Canada (45.22,-73.09)

Generated: 28/12/25 10:07:10. Forecast: 28/12/25 to 03/01/26. Timezone: UTC-5.00