Clear Outside v1.0 - International Weather Forecasts For Astronomers

Tuesday 9

Waning Gibbous 75%

21:40

11:22

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

Sun - Rise: 07:20, Set: 16:09, Transit: 11:45. Moon - Rise: 21:40, Set: 11:22. Civil Dark: 16:43 - 06:46. Nautical Dark: 17:20 - 06:09. Astro Dark: 17:56 - 05:33

Total Clouds (% Sky Obscured)

9
4
5
11
12
11
7
11
20
65
86
100
100
100
100
100
100
100
100
100
100
98
96
95

Low Clouds (% Sky Obscured)

9
4
1
1
1
1
0
1
1
2
7
65
30
8
10
10
9
8
96
87
88
84
85
82

Medium Clouds (% Sky Obscured)

2
2
2
2
3
1
2
3
2
51
82
99
99
100
100
100
100
100
100
100
100
96
91
77

High Clouds (% Sky Obscured)

0
2
0
0
0
0
0
2
7
30
27
43
77
100
100
88
100
96
100
68
65
0
4
27

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
3
2
2
2
8

Fog (%)

0
0
0
0
0
0
2
6
9
21
48
9
1
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
Snow
Snow
Snow
Snow

Precipitation Probability (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
19
35
37
43
41
43

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

-20
-20
-20
-20
-19
-19
-19
-18
-15
-12
-10
-8
-7
-7
-7
-8
-9
-9
-9
-7
-7
-6
-6
-6

Feels Like (°C)

-23
-23
-23
-22
-22
-22
-22
-21
-18
-17
-15
-14
-13
-12
-13
-13
-14
-14
-14
-14
-13
-14
-13
-14

Dew Point (°C)

-22
-23
-23
-22
-22
-21
-21
-20
-17
-14
-12
-12
-11
-11
-11
-11
-12
-12
-13
-12
-11
-9
-9
-9

Relative Humidity (%)

80
77
78
80
80
81
80
79
81
81
80
77
74
74
74
77
78
77
72
70
73
80
80
80

Pressure (mb)

1026
1026
1025
1025
1024
1024
1024
1023
1023
1022
1021
1019
1018
1017
1015
1014
1013
1012
1012
1011
1010
1009
1008
1007

Ozone (du)

414
418
422
430
423
420
420
416
417
423
428
430
430
430
426
421
423
427
422
417
417
411
405
399

Wednesday 10

Waning Gibbous 65%

22:52

11:43

01 Bad
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

Sun - Rise: 07:21, Set: 16:10, Transit: 11:45. Moon - Rise: 22:52, Set: 11:43. Civil Dark: 16:43 - 06:47. Nautical Dark: 17:20 - 06:10. Astro Dark: 17:56 - 05:34

Total Clouds (% Sky Obscured)

96
97
96
95
93
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
99
99
99
100

Low Clouds (% Sky Obscured)

92
92
79
84
75
75
73
71
76
91
100
100
100
98
91
81
82
85
89
87
87
87
90
89

Medium Clouds (% Sky Obscured)

93
93
56
86
84
81
100
100
100
100
100
100
100
100
100
100
100
100
100
100
95
96
96
100

High Clouds (% Sky Obscured)

77
92
89
75
77
98
100
100
100
100
100
100
100
100
100
100
100
100
100
90
89
90
66
90

ISS Passover

Visibility (miles)

0
0
9
9
9
9
9
9
2
0
0
0
0
0
0
0
0
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

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

Precipitation Probability (%)

50
37
16
13
9
4
2
8
46
75
95
95
95
95
95
94
90
82
67
60
63
73
77
90

Precipitation Amount (mm)

0.2
0
0
0
0
0
0
0
0.2
0.4
1.2
1.7
0.9
1
1.1
0.7
0.6
0.5
0.3
0.2
0.3
0.4
0.5
0.7

Wind Speed/Direction (mph)

11
13
13
12
11
10
9
7
7
8
7
7
9
9
8
8
8
8
7
7
8
7
7
7

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

85
87
81
79
82
82
82
85
89
94
96
98
98
98
98
100
98
98
98
98
98
100
98
98

Pressure (mb)

1006
1005
1004
1004
1003
1003
1002
1002
1001
1000
998
996
995
993
992
991
991
990
990
989
989
988
988
988

Ozone (du)

391
381
371
349
344
342
340
338
337
339
341
338
337
336
337
339
342
341
346
347
345
345
347
354

Thursday 11

Third Quarter 55%

00:00

12:01

01 Bad
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

Sun - Rise: 07:22, Set: 16:10, Transit: 11:46. Moon - Rise: 00:00, Set: 12:01. Civil Dark: 16:43 - 06:48. Nautical Dark: 17:21 - 06:11. Astro Dark: 17:56 - 05:35

Total Clouds (% Sky Obscured)

99
98
100
100
96
92
86
95
94
98
97
98
98
100
92
81
72
51
51
53
47
73
94
100

Low Clouds (% Sky Obscured)

87
86
100
100
89
85
82
82
81
86
82
82
81
87
87
81
72
51
51
53
47
73
89
95

Medium Clouds (% Sky Obscured)

95
92
82
28
5
9
17
33
31
40
44
40
40
35
40
40
55
50
50
50
47
48
88
100

High Clouds (% Sky Obscured)

43
90
9
9
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

ISS Passover

Visibility (miles)

0
0
0
7
9
9
9
9
6
7
9
9
9
8
9
9
9
9
9
9
9
9
9
9

Fog (%)

0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1

Precipitation Type

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

Precipitation Probability (%)

87
70
52
24
21
23
24
23
19
12
6
6
15
35
46
47
43
41
33
41
46
45
43
42

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

9
9
10
12
11
11
11
11
13
13
14
13
14
14
14
14
14
14
14
14
14
14
14
14

Chance of Frost

Temperature (°C)

-2
-4
-4
-5
-6
-6
-7
-8
-8
-8
-8
-8
-8
-9
-9
-10
-10
-11
-11
-11
-12
-12
-12
-12

Feels Like (°C)

-6
-9
-10
-13
-14
-15
-15
-15
-15
-15
-15
-15
-15
-16
-17
-18
-18
-18
-18
-18
-18
-18
-19
-20

Dew Point (°C)

-2
-4
-5
-7
-8
-9
-10
-10
-10
-10
-10
-10
-10
-11
-12
-13
-14
-14
-15
-15
-15
-15
-15
-15

Relative Humidity (%)

100
96
96
87
85
82
80
82
83
83
83
83
83
83
80
77
77
76
75
75
75
76
76
78

Pressure (mb)

989
990
991
992
994
995
997
998
998
999
999
998
998
999
999
1000
1000
1001
1001
1001
1001
1001
1001
1002

Ozone (du)

355
356
359
362
363
362
365
366
376
381
377
382
390
395
389
386
389
387
391
393
392
389
388
385

Friday 12

Waning Crescent 44%

01:06

12:18

01 Bad
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

Sun - Rise: 07:22, Set: 16:10, Transit: 11:46. Moon - Rise: 01:06, Set: 12:18. Civil Dark: 16:43 - 06:49. Nautical Dark: 17:21 - 06:11. Astro Dark: 17:57 - 05:36

Total Clouds (% Sky Obscured)

100
100
100
99
97
93
89
90
87
92
88
85
82
77
80
81
82
74
73
71
71
63
76
65

Low Clouds (% Sky Obscured)

94
95
97
96
95
90
79
80
61
64
80
80
80
57
80
81
82
69
66
65
71
63
76
65

Medium Clouds (% Sky Obscured)

100
100
100
96
86
78
68
69
72
88
86
85
81
62
47
27
25
35
38
40
41
40
32
26

High Clouds (% Sky Obscured)

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

ISS Passover

Visibility (miles)

9
9
9
8
7
8
8
9
9
9
9
9
9
9
9
9
9
9
9
9
9
4
4
4

Fog (%)

1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1

Precipitation Type

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

Precipitation Probability (%)

41
40
39
38
34
29
21
14
4
3
2
0
0
0
2
3
5
2
7
7
4
16
19
19

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
0
0
0

Wind Speed/Direction (mph)

15
15
16
16
16
17
17
17
17
17
17
16
16
15
14
14
13
12
10
9
8
7
6
6

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

79
79
79
81
81
83
83
83
81
81
81
80
80
80
82
82
83
82
85
87
88
90
90
90

Pressure (mb)

1002
1003
1003
1004
1004
1005
1006
1007
1008
1008
1008
1008
1008
1009
1010
1011
1011
1012
1013
1014
1014
1014
1015
1015

Ozone (du)

387
386
384
379
381
379
377
373
368
366
366
364
363
364
365
361
354
357
360
360
362
359
355
355

Saturday 13

Waning Crescent 34%

01:06

12:34

01 Bad
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 OK
19 Bad
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad

Sun - Rise: 07:23, Set: 16:10, Transit: 11:47. Moon - Rise: 01:06, Set: 12:34. Civil Dark: 16:44 - 06:49. Nautical Dark: 17:21 - 06:12. Astro Dark: 17:57 - 05:36

Total Clouds (% Sky Obscured)

77
96
95
94
96
97
97
98
99
100
100
100
89
78
68
59
46
40
56
72
88
91
93
94

Low Clouds (% Sky Obscured)

76
78
78
77
72
69
73
79
84
90
94
95
56
48
39
42
46
40
56
72
83
84
84
84

Medium Clouds (% Sky Obscured)

27
41
44
45
61
65
60
56
60
70
38
55
55
40
40
40
40
40
45
50
55
58
53
60

High Clouds (% Sky Obscured)

0
5
15
4
0
0
18
33
49
46
46
40
14
7
0
6
13
13
8
5
3
1
1
0

ISS Passover

Visibility (miles)

5
5
9
9
9
1
0
0
0
2
1
0
7
8
9
9
9
9
9
9
9
9
9
9

Fog (%)

1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1

Precipitation Type

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

Precipitation Probability (%)

20
20
18
17
18
34
42
40
22
23
28
37
39
28
11
10
6
0
9
9
4
19
25
26

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-16
-16
-15
-13
-13
-13
-13
-12
-11
-11
-10
-8
-9
-10
-10
-10
-10
-10
-10
-14
-14
-13
-13
-13

Dew Point (°C)

-14
-14
-12
-10
-10
-10
-9
-8
-7
-6
-5
-4
-6
-8
-8
-8
-10
-11
-12
-12
-12
-11
-12
-12

Relative Humidity (%)

90
88
88
90
87
87
92
92
94
90
86
89
76
77
79
84
83
85
86
86
87
87
87
87

Pressure (mb)

1015
1016
1016
1016
1015
1015
1015
1015
1015
1015
1014
1014
1013
1009
1010
1011
1011
1012
1012
1012
1012
1012
1013
1013

Ozone (du)

349
350
353
354
355
363
364
369
374
378
380
376
371
366
362
358
357
356
355
353
351
349
347
346

Sunday 14

Waning Crescent 25%

02:11

12:51

01 Bad
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

Sun - Rise: 07:24, Set: 16:10, Transit: 11:47. Moon - Rise: 02:11, Set: 12:51. Civil Dark: 16:44 - 06:50. Nautical Dark: 17:21 - 06:13. Astro Dark: 17:57 - 05:37

Total Clouds (% Sky Obscured)

96
98
100
93
88
85
78
69
65
70
70
75
90
90
95
95
95
91
86
71
70
70
70
75

Low Clouds (% Sky Obscured)

82
79
76
75
76
73
69
64
30
20
5
0
0
0
0
2
3
10
13
21
25
25
25
25

Medium Clouds (% Sky Obscured)

76
88
100
82
63
50
60
65
65
70
70
75
80
71
61
67
71
80
68
57
50
37
23
6

High Clouds (% Sky Obscured)

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

ISS Passover

Visibility (miles)

9
9
9
9
6
4
1
2
2
2
2
1
0
0
0
0
0
0
0
0
1
1
3
5

Fog (%)

1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1

Precipitation Type

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

Precipitation Probability (%)

26
25
19
19
17
7
14
15
11
15
19
15
23
30
31
33
41
43
39
41
38
32
28
18

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-12
-15
-15
-15
-15
-15
-15
-16
-16
-16
-15
-16
-15
-15
-15
-15
-16
-16
-16
-15
-15
-15
-16
-16

Dew Point (°C)

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

Relative Humidity (%)

86
87
88
88
88
88
88
88
88
88
88
86
87
88
88
90
90
92
92
90
87
85
83
83

Pressure (mb)

1013
1013
1013
1014
1014
1014
1015
1015
1016
1016
1016
1016
1016
1016
1017
1017
1017
1018
1018
1019
1019
1020
1020
1021

Ozone (du)

344
346
348
349
353
357
361
367
373
379
381
384
387
384
381
378
374
371
367
364
361
358
352
345

Monday 15

Waning Crescent 17%

03:16

13:11

Sun - Rise: 07:25, Set: 16:10, Transit: 11:48. Moon - Rise: 03:16, Set: 13:11. Civil Dark: 16:44 - 06:51. Nautical Dark: 17:22 - 06:14. Astro Dark: 17:57 - 05:38

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

Generated: 09/12/25 00:37:21. Forecast: 09/12/25 to 15/12/25. Timezone: UTC-5.00