Clear Outside v1.0 - International Weather Forecasts For Astronomers

Wednesday 24

Waxing Crescent 21%

10:33

20:58

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
02 Bad
03 Bad

Sun - Rise: 07:32, Set: 16:15, Transit: 11:54. Moon - Rise: 10:33, Set: 20:58. Civil Dark: 16:49 - 06:58. Nautical Dark: 17:27 - 06:21. Astro Dark: 18:03 - 05:45

Total Clouds (% Sky Obscured)

100
97
97
94
85
79
71
77
84
78
80
52
62
64
95
100
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

68
78
69
69
72
69
66
67
78
69
76
52
61
62
59
72
76
65
41
37
79
94
94
96

Medium Clouds (% Sky Obscured)

91
63
66
46
28
23
0
0
0
0
0
0
0
13
71
100
100
100
100
100
100
100
100
100

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
2
12
11
68
100
100
100
100
100
100
100
100
100

ISS Passover

Visibility (miles)

1
0
1
4
8
9
9
9
9
9
9
9
9
9
9
1
2
6
9
9
9
7
0
0

Fog (%)

0
0
0
1
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
Snow
Snow
Snow

Precipitation Probability (%)

17
14
0
6
8
4
3
1
3
1
0
1
1
1
0
0
2
0
0
2
8
51
88
95

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.2
0.6
0.7

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

-7
-7
-7
-7
-7
-7
-7
-6
-5
-5
-4
-4
-5
-6
-7
-7
-6
-6
-6
-6
-6
-6
-6
-6

Feels Like (°C)

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

Dew Point (°C)

-8
-8
-9
-9
-9
-9
-8
-8
-8
-8
-7
-6
-6
-8
-8
-7
-7
-7
-7
-8
-8
-8
-7
-6

Relative Humidity (%)

92
92
89
90
88
87
87
85
82
81
81
89
92
90
92
94
94
90
89
87
89
89
94
96

Pressure (mb)

1010
1012
1014
1016
1018
1020
1021
1022
1023
1023
1024
1025
1025
1025
1026
1025
1025
1024
1023
1023
1022
1020
1020
1019

Ozone (du)

357
358
359
360
363
364
353
345
341
341
341
338
337
332
328
324
323
322
323
332
342
345
353
363

Thursday 25

Waxing Crescent 30%

10:52

22:10

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 OK
18 Good
19 Good
20 Good
21 Good
22 Good
23 Good
00 OK
01 OK
02 OK
03 OK

Sun - Rise: 07:33, Set: 16:16, Transit: 11:54. Moon - Rise: 10:52, Set: 22:10. Civil Dark: 16:50 - 06:59. Nautical Dark: 17:28 - 06:21. Astro Dark: 18:04 - 05:45

Total Clouds (% Sky Obscured)

100
100
100
100
100
99
48
79
96
92
88
67
49
14
4
3
3
3
3
0
3
4
5
3

Low Clouds (% Sky Obscured)

97
100
100
88
100
98
48
77
89
85
82
65
49
14
1
1
1
1
1
0
0
0
0
0

Medium Clouds (% Sky Obscured)

100
100
100
100
100
62
40
21
24
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

100
100
100
35
33
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
3
4
5
3

ISS Passover

Visibility (miles)

0
0
0
1
6
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

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

Precipitation Probability (%)

87
84
83
53
18
14
9
19
9
9
4
4
1
0
0
0
0
0
0
0
0
0
0
0

Precipitation Amount (mm)

0.6
0.5
0.6
0.2
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
9
8
9
10
9
9
9
10
11
12
12
12
11
10
9
9
8
8
7
8
7
7
7

Chance of Frost

Temperature (°C)

-6
-5
-5
-5
-5
-5
-5
-5
-4
-4
-5
-6
-7
-8
-10
-11
-12
-13
-14
-15
-16
-16
-17
-17

Feels Like (°C)

-10
-11
-10
-9
-10
-10
-9
-8
-9
-10
-11
-12
-12
-13
-14
-15
-15
-17
-17
-18
-19
-20
-21
-21

Dew Point (°C)

-6
-6
-6
-6
-6
-6
-6
-7
-7
-8
-9
-10
-11
-12
-14
-15
-16
-17
-18
-18
-19
-20
-21
-21

Relative Humidity (%)

96
94
94
92
90
90
89
84
79
76
73
71
71
72
72
72
72
71
73
73
73
73
72
70

Pressure (mb)

1017
1016
1016
1015
1015
1015
1015
1014
1014
1015
1016
1017
1019
1021
1022
1024
1024
1025
1026
1026
1027
1027
1028
1028

Ozone (du)

369
377
381
380
388
402
412
395
379
376
376
373
371
370
361
359
360
358
359
354
348
350
350
343

Friday 26

Waxing Crescent 41%

11:10

23:22

04 OK
05 OK
06 OK
07 OK
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

Sun - Rise: 07:33, Set: 16:17, Transit: 11:55. Moon - Rise: 11:10, Set: 23:22. Civil Dark: 16:51 - 06:59. Nautical Dark: 17:28 - 06:21. Astro Dark: 18:04 - 05:45

Total Clouds (% Sky Obscured)

0
3
5
3
50
84
100
100
100
100
100
100
100
100
100
100
100
100
100
100
98
91
84
79

Low Clouds (% Sky Obscured)

0
0
1
1
1
0
0
0
0
0
15
2
0
0
0
0
0
0
0
1
1
3
2
1

Medium Clouds (% Sky Obscured)

0
0
0
0
33
65
75
58
94
100
100
100
88
99
100
100
100
100
100
96
75
75
74
79

High Clouds (% Sky Obscured)

0
3
4
0
8
32
100
100
100
100
100
100
100
100
100
100
100
100
100
100
91
73
50
25

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
1
3
4
3
3
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

-21
-21
-21
-20
-20
-20
-21
-20
-19
-18
-18
-18
-17
-18
-18
-18
-18
-18
-18
-18
-17
-17
-17
-18

Relative Humidity (%)

72
74
78
79
79
73
68
66
67
70
70
73
79
79
80
80
78
77
80
79
80
80
80
81

Pressure (mb)

1028
1028
1029
1029
1029
1029
1029
1027
1026
1026
1025
1025
1024
1023
1023
1023
1023
1023
1023
1023
1023
1023
1023
1023

Ozone (du)

337
334
332
333
332
332
333
333
333
330
329
325
323
327
327
327
328
326
328
331
332
333
333
341

Saturday 27

First Quarter 52%

11:28

00:36

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

Sun - Rise: 07:33, Set: 16:18, Transit: 11:55. Moon - Rise: 11:28, Set: 00:36. Civil Dark: 16:52 - 06:59. Nautical Dark: 17:29 - 06:22. Astro Dark: 18:05 - 05:46

Total Clouds (% Sky Obscured)

62
46
25
20
2
2
1
1
1
24
62
86
90
84
51
37
30
20
17
21
34
41
34
53

Low Clouds (% Sky Obscured)

1
1
1
1
2
2
1
1
1
3
6
4
4
4
4
4
4
7
4
13
34
39
26
53

Medium Clouds (% Sky Obscured)

62
41
25
20
2
2
1
0
0
14
25
30
87
75
26
18
16
8
8
8
8
7
4
0

High Clouds (% Sky Obscured)

25
20
20
15
0
0
0
0
0
17
35
55
65
75
51
37
24
1
4
7
12
8
4
0

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
8
8
5
3
4
8
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 (%)

1
1
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)

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

Chance of Frost

Temperature (°C)

-15
-15
-16
-16
-16
-16
-15
-14
-13
-12
-12
-12
-12
-13
-13
-14
-14
-14
-14
-15
-15
-15
-15
-15

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

82
82
82
82
82
81
78
76
74
75
78
81
86
86
88
88
88
88
88
88
86
86
88
86

Pressure (mb)

1023
1024
1024
1025
1026
1026
1027
1027
1027
1026
1026
1026
1026
1026
1026
1026
1026
1026
1026
1026
1026
1025
1025
1025

Ozone (du)

349
349
355
359
360
362
358
352
351
347
346
347
347
348
354
356
358
360
364
364
366
362
361
358

Sunday 28

Waxing Gibbous 63%

11:47

01:54

04 Bad
05 Bad
06 Bad
07 Bad
08 Bad
09 OK
10 Bad
11 OK
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

Sun - Rise: 07:33, Set: 16:18, Transit: 11:56. Moon - Rise: 11:47, Set: 01:54. Civil Dark: 16:52 - 06:59. Nautical Dark: 17:30 - 06:22. Astro Dark: 18:06 - 05:46

Total Clouds (% Sky Obscured)

54
55
65
63
60
46
76
34
100
100
79
100
100
99
99
99
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

51
55
65
63
60
46
76
34
72
65
60
42
32
36
35
38
50
54
73
83
89
78
87
100

Medium Clouds (% Sky Obscured)

16
31
47
48
47
44
64
33
32
31
37
34
90
46
85
83
86
91
94
98
100
100
100
100

High Clouds (% Sky Obscured)

0
0
0
0
0
0
30
34
100
73
41
25
25
30
30
40
75
90
100
100
100
100
100
100

ISS Passover

Visibility (miles)

8
8
8
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
6
3
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

None
None
None
None
None
None
None
None
None
None
None
None
None
Snow
Snow
Snow
Snow
None
Snow
None
Ice pellet
Ice pellet
Snow
Snow

Precipitation Probability (%)

0
0
0
1
1
3
5
5
4
7
13
22
41
55
64
86
65
31
48
61
78
95
95
95

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0.2
0.2
0.4
0.3
0
0.1
0
0.3
0.9
1.4
2

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

-15
-15
-15
-15
-15
-13
-11
-10
-9
-9
-8
-8
-9
-9
-10
-9
-9
-8
-8
-8
-7
-6
-6
-6

Feels Like (°C)

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

Dew Point (°C)

-17
-17
-17
-17
-16
-15
-14
-13
-13
-12
-11
-10
-11
-11
-11
-11
-11
-10
-10
-9
-8
-7
-7
-7

Relative Humidity (%)

88
86
86
88
86
84
80
78
77
75
78
85
88
87
87
87
87
87
87
88
90
94
94
96

Pressure (mb)

1024
1023
1023
1022
1022
1021
1020
1018
1016
1014
1013
1012
1011
1010
1008
1006
1005
1003
1001
999
997
996
994
992

Ozone (du)

357
358
356
355
353
351
353
353
351
351
350
346
342
343
342
343
346
349
352
351
350
349
356
362

Monday 29

Waxing Gibbous 74%

12:10

03:15

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
02 Bad
03 Bad

Sun - Rise: 07:34, Set: 16:19, Transit: 11:56. Moon - Rise: 12:10, Set: 03:15. Civil Dark: 16:53 - 07:00. Nautical Dark: 17:31 - 06:22. Astro Dark: 18:07 - 05:46

Total Clouds (% Sky Obscured)

100
100
100
96
92
87
92
96
99
98
96
95
95
95
95
97
99
100
99
99
100
100
100
100

Low Clouds (% Sky Obscured)

100
100
100
96
92
87
91
91
90
88
86
86
87
89
92
94
97
100
95
90
85
87
89
91

Medium Clouds (% Sky Obscured)

100
100
100
83
69
53
62
69
74
81
87
93
93
94
95
97
99
100
99
99
100
100
100
100

High Clouds (% Sky Obscured)

72
45
17
12
16
20
15
5
5
13
7
0
6
6
6
10
16
18
11
8
17
50
62
51

ISS Passover

Visibility (miles)

0
1
1
1
1
1
1
4
7
9
6
3
0
1
3
4
3
2
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
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow

Precipitation Probability (%)

95
95
95
95
84
73
64
56
48
46
44
41
49
53
51
48
47
49
45
43
39
46
52
57

Precipitation Amount (mm)

1.8
1.5
1.1
0.7
0.5
0.4
0.3
0.2
0.2
0.2
0.1
0.1
0.2
0.2
0.2
0.2
0.1
0.2
0.1
0.1
0.1
0.1
0.2
0.3

Wind Speed/Direction (mph)

8
8
10
13
12
13
13
13
14
14
14
13
12
12
13
13
13
14
14
14
14
14
14
13

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-12
-13
-13
-13
-8
-8
-8
-8
-8
-9
-12
-11
-12
-12
-13
-12
-13
-12
-12
-12
-12
-13
-15
-15

Dew Point (°C)

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

Relative Humidity (%)

98
98
96
96
94
92
91
85
81
74
81
87
92
90
87
85
85
87
88
90
88
88
90
90

Pressure (mb)

990
990
990
989
989
990
990
989
989
988
988
988
988
988
988
989
989
989
989
990
990
990
991
992

Ozone (du)

369
365
361
358
367
377
387
390
394
397
399
400
401
401
401
401
398
395
392
393
395
396
396
395

Tuesday 30

Waxing Gibbous 84%

12:38

No Set

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: 07:34, Set: 16:20, Transit: 11:57. Moon - Rise: 12:38, Set: No Set. Civil Dark: 16:54 - 07:00. Nautical Dark: 17:31 - 06:22. Astro Dark: 18:07 - 05:46

Total Clouds (% Sky Obscured)

100
100
99
99
99
100
99
100
100
100
99
100
98
97
88
84
81
81
86
87
84

Low Clouds (% Sky Obscured)

91
91
91
90
90
90
81
72
69
71
73
74
65
65
61
60
52
42
40
43
36

Medium Clouds (% Sky Obscured)

93
86
79
87
93
100
95
90
85
65
44
18
15
11
8
13
18
20
16
15
9

High Clouds (% Sky Obscured)

34
22
10
13
15
18
14
8
1
0
0
0
1
2
3
3
4
4
5
5
6

ISS Passover

Visibility (miles)

0
3
6
9
6
3
0
3
6
9
9
9
9
6
3
1
4
6
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
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

56
54
47
51
51
47
50
51
49
39
28
5
17
21
23
19
15
4
7
6
0

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

13
14
15
17
17
18
18
18
18
18
18
17
17
16
16
15
15
14
14
13
12

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

92
88
85
80
82
85
87
85
83
81
80
80
78
80
81
81
81
79
78
79
79

Pressure (mb)

993
994
995
996
998
999
1001
1001
1002
1003
1004
1005
1006
1007
1008
1010
1010
1011
1011
1012
1012

Ozone (du)

394
396
398
400
401
401
402
407
412
417
418
419
419
414
408
402
407
412
417
410
402

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

Generated: 24/12/25 04:53:05. Forecast: 24/12/25 to 30/12/25. Timezone: UTC-5.00