Clear Outside v1.0 - International Weather Forecasts For Astronomers

Tuesday 2

Waxing Gibbous 99%

14:45

05:44

23 OK
00 OK
01 OK
02 Good
03 Good
04 Good
05 Good
06 Good
07 Good
08 OK
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

Sun - Rise: 07:17, Set: 16:11, Transit: 11:44. Moon - Rise: 14:45, Set: 05:44. Civil Dark: 16:45 - 06:43. Nautical Dark: 17:22 - 06:06. Astro Dark: 17:58 - 05:30

Total Clouds (% Sky Obscured)

14
11
9
3
3
3
2
2
2
15
92
91
100
95
100
77
85
93
86
87
95
99
100
100

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
1
0
15
59
70
62
10
98
67
67
77
77
75
75
73
81
84

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
1
6
56
100
94
83
39
29
41
58
57
74
70
99
100

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
2
67
27
37
27
53
1
2
16
14
21
32
38
44
100

ISS Passover

Visibility (miles)

8
8
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
1
1
14
2
2
6
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
1
3
3
5
7
10
8
8
10
18

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-13
-14
-14
-10
-9
-9
-9
-9
-9
-9
-9
-10
-9
-9
-8
-8
-6
-8
-7
-7
-6
-7
-7
-6

Dew Point (°C)

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

Relative Humidity (%)

90
90
88
88
87
87
88
88
90
87
84
80
81
79
79
81
82
82
82
82
86
83
80
77

Pressure (mb)

1014
1014
1014
1014
1014
1015
1015
1016
1016
1016
1016
1017
1016
1016
1015
1014
1013
1013
1012
1012
1012
1011
1011
1010

Ozone (du)

364
364
368
367
363
359
357
354
356
356
357
357
356
354
352
352
347
349
352
355
357
359
361
363

Wednesday 3

Waxing Gibbous 98%

15:30

07:11

23 Bad
00 Bad
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 OK
15 Bad
16 Bad
17 OK
18 OK
19 Good
20 Good
21 Good
22 Good

Sun - Rise: 07:18, Set: 16:11, Transit: 11:44. Moon - Rise: 15:30, Set: 07:11. Civil Dark: 16:45 - 06:44. Nautical Dark: 17:22 - 06:07. Astro Dark: 17:58 - 05:31

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
99
94
93
90
85
92
82
35
81
59
36
14
9
8
7
10

Low Clouds (% Sky Obscured)

81
90
94
91
91
89
100
100
97
90
61
30
30
30
24
9
73
59
36
14
9
8
7
10

Medium Clouds (% Sky Obscured)

99
71
71
71
88
88
85
67
51
45
43
35
34
32
26
13
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

100
90
100
95
90
82
9
0
21
5
0
0
0
0
0
0
0
0
0
0
0
0
0
0

ISS Passover

Visibility (miles)

9
0
0
0
2
1
3
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
Snow
Snow
Snow
Snow
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

33
35
43
46
43
49
34
14
5
6
3
0
0
0
0
2
9
1
2
0
0
0
0
0

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

-1
-1
-1
-1
-1
-1
-1
-2
-3
-4
-5
-6
-7
-7
-7
-8
-9
-9
-11
-13
-14
-14
-15
-15

Feels Like (°C)

-6
-6
-6
-6
-6
-6
-7
-7
-9
-10
-11
-12
-13
-14
-14
-15
-15
-16
-16
-18
-19
-20
-19
-19

Dew Point (°C)

-4
-2
-1
-1
-2
-2
-3
-6
-8
-9
-12
-14
-14
-14
-14
-14
-15
-15
-17
-19
-19
-20
-20
-20

Relative Humidity (%)

81
92
96
94
87
87
86
76
72
68
60
55
55
56
60
60
60
61
59
60
61
63
64
64

Pressure (mb)

1010
1010
1010
1010
1010
1010
1010
1012
1013
1014
1014
1015
1015
1015
1016
1016
1017
1018
1020
1021
1023
1024
1024
1025

Ozone (du)

367
368
369
371
370
369
370
375
376
377
382
395
403
408
419
425
429
427
423
411
401
397
393
390

Thursday 4

Full Moon 100%

16:30

08:30

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

Sun - Rise: 07:19, Set: 16:11, Transit: 11:45. Moon - Rise: 16:30, Set: 08:30. Civil Dark: 16:44 - 06:45. Nautical Dark: 17:22 - 06:08. Astro Dark: 17:57 - 05:32

Total Clouds (% Sky Obscured)

9
1
8
13
10
7
26
52
32
79
81
98
100
100
100
44
41
34
42
75
73
71
68
79

Low Clouds (% Sky Obscured)

9
0
8
13
10
0
15
16
1
4
0
0
0
0
0
0
1
7
9
9
24
38
50
61

Medium Clouds (% Sky Obscured)

0
0
0
0
2
7
13
32
32
79
81
94
100
100
100
44
41
34
42
72
57
43
14
23

High Clouds (% Sky Obscured)

0
0
0
0
4
7
16
52
32
65
41
69
97
90
43
13
35
10
2
1
0
0
0
20

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
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
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
1
1
1
1
3
9
16
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
9
9
9
8
7
6
6
6
7
7
7
8
8
7
7
7
7
7
7
7
6
6
6

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

-20
-20
-20
-19
-19
-19
-19
-19
-19
-18
-18
-18
-16
-18
-18
-16
-15
-13
-12
-12
-12
-11
-10
-9

Relative Humidity (%)

65
64
65
66
67
67
65
65
67
68
65
64
63
50
49
51
56
67
70
70
72
76
79
83

Pressure (mb)

1026
1026
1027
1027
1027
1027
1026
1026
1026
1025
1025
1024
1023
1021
1020
1018
1017
1016
1016
1015
1015
1015
1015
1014

Ozone (du)

385
378
372
366
362
364
362
369
365
360
351
352
348
347
354
352
349
345
339
338
337
333
332
332

Friday 5

Waning Gibbous 97%

17:44

09:35

23 Bad
00 Bad
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

Sun - Rise: 07:20, Set: 16:11, Transit: 11:45. Moon - Rise: 17:44, Set: 09:35. Civil Dark: 16:44 - 06:46. Nautical Dark: 17:22 - 06:09. Astro Dark: 17:57 - 05:33

Total Clouds (% Sky Obscured)

88
97
98
99
100
100
100
100
100
100
100
99
98
98
96
94
93
93
93
93
91
88
90
93

Low Clouds (% Sky Obscured)

67
73
68
65
68
62
64
59
62
66
80
84
91
94
94
94
93
93
93
93
88
82
83
89

Medium Clouds (% Sky Obscured)

32
46
50
58
60
60
62
70
100
100
100
99
67
44
94
94
93
92
91
82
49
54
53
55

High Clouds (% Sky Obscured)

43
65
74
84
95
95
97
99
81
63
47
37
25
15
10
5
1
18
1
0
0
0
0
0

ISS Passover

Visibility (miles)

1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
4
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
Snow
Snow
None
Snow
Snow
Snow
Snow
Snow
None
None
None
None
None
None
None

Precipitation Probability (%)

13
16
24
24
29
27
18
27
26
37
35
35
52
70
76
72
53
38
33
30
20
20
21
20

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0.1
0.1
0
0.2
0.5
0.6
0.5
0.2
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

-9
-8
-8
-7
-7
-7
-6
-6
-6
-6
-5
-5
-4
-3
-2
-2
-2
-2
-2
-3
-3
-3
-4
-4

Relative Humidity (%)

85
87
92
92
94
92
94
94
94
94
94
89
91
94
96
96
98
96
94
86
89
86
84
84

Pressure (mb)

1014
1014
1014
1014
1013
1013
1012
1012
1012
1012
1012
1011
1011
1010
1009
1009
1009
1008
1008
1009
1009
1009
1009
1009

Ozone (du)

329
326
324
324
324
321
321
324
332
340
348
351
348
345
344
345
347
343
339
339
340
336
335
334

Saturday 6

Waning Gibbous 92%

19:04

10:24

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

Sun - Rise: 07:21, Set: 16:10, Transit: 11:46. Moon - Rise: 19:04, Set: 10:24. Civil Dark: 16:44 - 06:47. Nautical Dark: 17:22 - 06:10. Astro Dark: 17:57 - 05:34

Total Clouds (% Sky Obscured)

91
99
97
54
46
40
34
30
30
26
11
11
11
24
25
43
48
44
44
45
61
61
67
60

Low Clouds (% Sky Obscured)

87
97
92
54
46
40
34
30
30
26
11
11
11
24
25
43
48
44
44
45
61
61
67
47

Medium Clouds (% Sky Obscured)

55
54
56
54
46
40
33
30
29
26
11
11
11
24
25
43
45
44
44
45
53
41
29
30

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
1
27
26
11
11
11
24
11
19
27
18
9
2
2
2
3
2

ISS Passover

Visibility (miles)

9
0
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
Snow
None
None
None
None
None
None
None
None

Precipitation Probability (%)

28
24
10
9
8
13
16
18
15
12
5
15
17
13
36
38
36
36
35
33
28
23
13
10

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

-1
-2
-3
-3
-4
-5
-5
-6
-6
-6
-6
-6
-6
-6
-6
-10
-10
-10
-10
-10
-11
-11
-11
-11

Feels Like (°C)

-7
-7
-8
-9
-8
-8
-8
-9
-9
-9
-9
-9
-9
-10
-10
-13
-13
-13
-13
-13
-14
-14
-13
-13

Dew Point (°C)

-3
-3
-7
-7
-7
-8
-8
-8
-9
-9
-10
-11
-11
-11
-11
-14
-13
-13
-14
-13
-14
-14
-13
-14

Relative Humidity (%)

86
91
71
73
81
77
81
80
79
79
71
67
66
66
69
71
74
75
75
77
78
78
80
80

Pressure (mb)

1010
1010
1011
1012
1013
1014
1015
1016
1016
1017
1017
1018
1017
1017
1017
1019
1019
1018
1019
1019
1019
1019
1019
1019

Ozone (du)

337
338
336
338
341
343
341
338
337
339
342
347
349
350
357
363
369
376
375
374
373
371
369
368

Sunday 7

Waning Gibbous 84%

20:25

10:59

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

Sun - Rise: 07:22, Set: 16:10, Transit: 11:46. Moon - Rise: 20:25, Set: 10:59. Civil Dark: 16:44 - 06:48. Nautical Dark: 17:22 - 06:11. Astro Dark: 17:58 - 05:35

Total Clouds (% Sky Obscured)

46
35
32
26
23
24
21
16
23
23
28
28
24
16
9
18
18
16
14
11
12
17
22
16

Low Clouds (% Sky Obscured)

26
6
7
9
11
7
4
0
23
23
28
28
24
16
9
18
18
16
14
2
11
17
22
16

Medium Clouds (% Sky Obscured)

32
35
26
20
15
17
17
9
9
12
15
10
3
0
0
0
0
0
0
0
1
1
1
2

High Clouds (% Sky Obscured)

1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
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 (%)

6
1
1
0
0
0
0
0
13
22
30
32
32
26
20
13
4
4
2
0
3
3
1
1

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
5
6
6
6
6
5
5
4
4
4
4
6
8
10
10
10
10
9
8
8
8
8
8

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-14
-14
-15
-15
-16
-16
-16
-16
-16
-16
-16
-15
-15
-16
-15
-13
-14
-14
-14
-14
-14
-15
-15
-15

Dew Point (°C)

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

Relative Humidity (%)

78
78
79
79
79
79
79
79
79
74
70
65
66
65
65
69
72
75
76
76
78
79
78
78

Pressure (mb)

1019
1020
1020
1020
1020
1020
1020
1020
1020
1021
1021
1021
1021
1021
1021
1021
1021
1022
1022
1022
1022
1021
1021
1020

Ozone (du)

370
371
373
388
403
419
427
436
445
447
449
450
444
437
431
431
431
431
431
430
430
429
427
425

Monday 8

Waning Gibbous 75%

21:42

11:25

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

Sun - Rise: 07:23, Set: 16:10, Transit: 11:47. Moon - Rise: 21:42, Set: 11:25. Civil Dark: 16:44 - 06:49. Nautical Dark: 17:22 - 06:12. Astro Dark: 17:58 - 05:36

Total Clouds (% Sky Obscured)

13
12
21
31
42
61
77
95
79
59
41
46
51
59
63
64
55
60
60
55

Low Clouds (% Sky Obscured)

11
2
2
2
3
16
40
53
46
34
18
14
9
4
4
3
3
10
20
28

Medium Clouds (% Sky Obscured)

3
4
13
22
30
52
70
90
73
51
28
30
31
33
43
53
55
60
60
55

High Clouds (% Sky Obscured)

1
2
2
3
4
2
1
0
2
3
5
16
28
40
60
64
55
60
60
55

ISS Passover

Visibility (miles)

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

Precipitation Type

None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

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

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

8
8
8
8
8
8
7
7
6
6
6
6
6
6
7
6
6
6
7
7

Chance of Frost

Temperature (°C)

-12
-11
-11
-11
-11
-11
-11
-11
-11
-11
-10
-10
-9
-8
-7
-7
-7
-8
-7
-7

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

76
78
76
78
76
76
76
76
76
73
69
66
67
65
67
68
71
74
74
76

Pressure (mb)

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

Ozone (du)

425
424
423
420
417
414
413
411
410
410
410
410
410
410
410
411
413
414
413
412

Forecast for Le Vieux-Port, Montréal, Canada (45.50,-73.57)

Generated: 02/12/25 23:17:16. Forecast: 02/12/25 to 08/12/25. Timezone: UTC-5.00