Clear Outside v1.0 - International Weather Forecasts For Astronomers

Friday 19

New Moon 1%

08:28

15:22

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

Sun - Rise: 07:31, Set: 16:09, Transit: 11:50. Moon - Rise: 08:28, Set: 15:22. Civil Dark: 16:43 - 06:56. Nautical Dark: 17:21 - 06:18. Astro Dark: 17:58 - 05:42

Total Clouds (% Sky Obscured)

100
100
100
90
97
94
99
98
97
98
100
87
79
62
46
6
1
27
35
88
81
100
100
100

Low Clouds (% Sky Obscured)

79
54
83
78
76
73
75
65
81
93
99
77
75
56
37
5
0
0
0
0
0
19
30
13

Medium Clouds (% Sky Obscured)

100
99
67
60
49
42
86
94
88
89
45
13
3
0
0
0
0
22
25
54
49
99
90
93

High Clouds (% Sky Obscured)

65
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
2
0
19
11
94
22
65

ISS Passover

Visibility (miles)

4
9
9
9
9
1
9
3
9
9
4
9
9
9
9
9
9
9
9
9
9
9
5
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

Very Light Rain
None
None
Very Light Rain
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

67
8
0
51
29
27
12
26
20
5
5
1
1
0
0
0
0
0
0
0
0
7
3
1

Precipitation Amount (mm)

0.3
0
0
0.3
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

17
16
14
9
16
19
22
21
22
20
19
18
19
18
17
16
13
11
10
9
9
10
9
10

Chance of Frost

Temperature (°C)

4
3
3
2
1
1
0
-1
-2
-5
-5
-6
-6
-6
-7
-7
-7
-8
-7
-7
-7
-6
-6
-6

Feels Like (°C)

-2
-3
-4
-6
-7
-8
-8
-9
-11
-13
-13
-14
-14
-14
-15
-15
-13
-12
-12
-11
-12
-11
-12
-12

Dew Point (°C)

3
2
1
-3
-3
-1
-3
-4
-8
-11
-11
-12
-13
-13
-13
-14
-14
-15
-16
-16
-16
-15
-14
-11

Relative Humidity (%)

94
89
86
72
77
89
83
81
65
61
62
58
57
60
59
58
57
53
50
48
48
49
53
63

Pressure (mb)

986
986
987
987
988
989
990
991
994
997
1000
1003
1006
1008
1010
1013
1015
1017
1018
1018
1018
1018
1017
1018

Ozone (du)

334
337
346
352
354
359
375
381
375
390
381
376
378
377
377
372
374
372
373
370
360
351
345
342

Saturday 20

Waxing Crescent 3%

09:11

16:18

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 OK
10 Bad
11 OK
12 OK
13 OK
14 OK

Sun - Rise: 07:31, Set: 16:09, Transit: 11:51. Moon - Rise: 09:11, Set: 16:18. Civil Dark: 16:44 - 06:57. Nautical Dark: 17:22 - 06:19. Astro Dark: 17:58 - 05:42

Total Clouds (% Sky Obscured)

100
97
100
100
100
100
100
100
100
100
100
100
100
100
100
78
93
49
37
45
24
40
40
39

Low Clouds (% Sky Obscured)

88
55
54
10
98
100
100
100
100
89
100
100
100
100
100
75
93
18
32
45
23
40
40
39

Medium Clouds (% Sky Obscured)

99
96
100
100
100
100
100
100
100
79
56
28
0
0
0
60
85
49
25
45
0
0
0
0

High Clouds (% Sky Obscured)

98
56
100
100
100
99
100
19
25
25
23
0
0
0
0
0
0
0
0
0
0
0
0
0

ISS Passover

Visibility (miles)

9
4
9
9
8
1
1
1
2
0
1
0
0
0
1
9
8
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
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

16
20
22
22
49
70
75
66
70
70
58
53
47
36
28
39
25
31
5
5
2
0
0
0

Precipitation Amount (mm)

0
0
0
0
0.2
0.4
0.3
0.1
0.3
0.3
0.2
0.3
0.2
0.1
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

6
8
7
8
6
6
3
5
7
11
12
12
11
10
13
18
18
20
19
20
19
18
17
15

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

-11
-10
-11
-11
-9
-7
-5
-5
-5
-3
-3
-2
-1
-0
-0
-4
-4
-7
-7
-8
-9
-9
-9
-9

Relative Humidity (%)

63
70
66
64
68
82
91
89
87
92
87
94
96
96
93
73
77
60
63
64
65
65
64
65

Pressure (mb)

1016
1015
1014
1011
1010
1008
1008
1006
1006
1005
1004
1004
1003
1003
1003
1003
1004
1005
1007
1009
1010
1010
1011
1012

Ozone (du)

340
340
338
334
334
333
337
339
338
340
347
350
354
357
363
365
363
361
361
359
354
354
360
362

Sunday 21

Waxing Crescent 7%

09:44

17:23

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

Sun - Rise: 07:32, Set: 16:10, Transit: 11:51. Moon - Rise: 09:44, Set: 17:23. Civil Dark: 16:44 - 06:57. Nautical Dark: 17:22 - 06:19. Astro Dark: 17:59 - 05:43

Total Clouds (% Sky Obscured)

24
76
94
89
81
67
54
54
13
4
3
3
1
78
100
97
73
31
58
73
92
98
97
97

Low Clouds (% Sky Obscured)

24
52
65
31
21
21
52
50
3
2
2
1
1
24
46
74
25
29
35
35
40
40
45
57

Medium Clouds (% Sky Obscured)

0
34
67
72
72
54
54
54
10
1
1
2
0
78
100
49
30
4
22
29
48
68
75
77

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
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
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
5
7
8
8

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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

65
67
69
70
67
65
65
66
65
65
65
66
67
67
66
63
62
65
62
61
65
62
60
61

Pressure (mb)

1013
1014
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1027
1028
1028
1029
1029
1030
1029
1029
1028
1028

Ozone (du)

366
368
361
355
357
358
359
359
364
368
370
374
369
372
379
379
379
382
380
387
380
385
390
382

Monday 22

Waxing Crescent 13%

10:10

18:32

15 Bad
16 Bad
17 OK
18 OK
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
10 Bad
11 Bad
12 Bad
13 Bad
14 Bad

Sun - Rise: 07:32, Set: 16:10, Transit: 11:52. Moon - Rise: 10:10, Set: 18:32. Civil Dark: 16:45 - 06:58. Nautical Dark: 17:23 - 06:20. Astro Dark: 17:59 - 05:43

Total Clouds (% Sky Obscured)

76
51
41
43
50
52
60
60
66
74
75
68
100
100
100
100
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

43
29
34
42
46
52
60
60
62
64
54
49
48
38
95
91
97
98
99
99
99
99
99
98

Medium Clouds (% Sky Obscured)

75
51
36
22
23
21
21
25
26
29
35
42
43
52
100
100
100
100
100
100
100
100
100
100

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
2
4
7
35
57
100
100
100
100
72
43
15
15
15
20
1
0

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
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

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

Precipitation Probability (%)

4
3
3
1
2
2
2
8
11
14
15
16
18
21
23
26
37
74
86
88
94
95
95
95

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.4
0.6
0.6
0.6
0.8
0.7
0.7

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

54
59
65
69
71
72
74
72
71
72
75
77
77
77
77
74
74
83
90
92
90
92
94
94

Pressure (mb)

1028
1029
1029
1029
1029
1029
1028
1028
1027
1027
1026
1026
1025
1024
1023
1022
1021
1020
1019
1018
1016
1015
1013
1012

Ozone (du)

373
376
374
369
367
367
363
360
357
351
347
343
342
343
337
334
329
330
327
328
333
339
342
348

Tuesday 23

Waxing Crescent 12%

10:32

19:44

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
10 Bad
11 OK
12 OK
13 OK
14 OK

Sun - Rise: 07:33, Set: 16:11, Transit: 11:52. Moon - Rise: 10:32, Set: 19:44. Civil Dark: 16:45 - 06:58. Nautical Dark: 17:23 - 06:20. Astro Dark: 18:00 - 05:44

Total Clouds (% Sky Obscured)

100
100
100
100
99
97
92
90
81
87
92
82
79
94
93
90
77
69
61
49
38
29
32
25

Low Clouds (% Sky Obscured)

97
96
95
93
89
85
79
79
73
77
81
76
73
29
62
64
57
60
51
45
35
26
32
25

Medium Clouds (% Sky Obscured)

100
99
98
98
94
88
72
73
72
54
44
39
35
74
67
60
44
25
9
4
2
0
1
2

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)

0
0
0
0
0
0
0
5
9
9
7
9
9
9
2
0
0
3
6
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
Snow
Snow
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

85
91
90
83
72
56
36
31
28
23
24
25
24
21
28
18
17
13
4
3
2
0
1
1

Precipitation Amount (mm)

0.5
0.6
0.6
0.5
0.4
0.2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-10
-10
-11
-11
-11
-11
-11
-11
-11
-11
-12
-12
-12
-12
-12
-12
-11
-11
-11
-10
-10
-10
-10
-6

Dew Point (°C)

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

Relative Humidity (%)

96
96
94
94
94
94
94
92
90
90
92
90
90
90
90
92
92
90
87
85
81
78
75
79

Pressure (mb)

1012
1011
1011
1011
1011
1011
1012
1012
1013
1014
1015
1016
1017
1018
1019
1021
1022
1023
1025
1026
1026
1026
1026
1027

Ozone (du)

357
362
364
354
345
342
343
345
348
349
346
344
345
345
348
351
354
351
348
344
344
343
343
344

Wednesday 24

Waxing Crescent 21%

10:51

20:55

15 OK
16 Good
17 OK
18 Good
19 OK
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
10 Bad
11 Bad
12 Bad
13 Bad
14 Bad

Sun - Rise: 07:33, Set: 16:11, Transit: 11:53. Moon - Rise: 10:51, Set: 20:55. Civil Dark: 16:46 - 06:58. Nautical Dark: 17:24 - 06:20. Astro Dark: 18:00 - 05:44

Total Clouds (% Sky Obscured)

23
17
11
6
24
41
55
57
71
88
93
96
100
100
100
100
100
100
100
89
67
48
64
80

Low Clouds (% Sky Obscured)

23
17
11
6
10
14
22
25
22
13
16
20
20
25
50
45
67
82
100
89
67
48
64
80

Medium Clouds (% Sky Obscured)

3
2
2
2
16
35
55
57
71
88
93
96
100
100
100
100
86
64
46
29
15
0
0
0

High Clouds (% Sky Obscured)

1
1
1
1
1
1
1
16
29
33
34
52
74
82
91
100
83
73
59
64
59
31
29
36

ISS Passover

Visibility (miles)

9
9
9
9
9
9
8
7
8
9
9
9
9
9
6
3
1
3
6
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
Snow
Frozen rai
Frozen rai
Frozen rai
Frozen rai

Precipitation Probability (%)

0
0
0
0
0
0
0
0
0
0
3
6
6
20
24
18
26
27
18
44
58
71
72
75

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.1
0.2
0.4
0.4
0.4

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-7
-8
-8
-9
-10
-13
-13
-13
-13
-13
-14
-13
-14
-14
-14
-14
-14
-12
-11
-10
-11
-10
-10
-5

Dew Point (°C)

-8
-9
-10
-11
-13
-13
-13
-13
-13
-13
-12
-11
-11
-10
-10
-9
-8
-8
-7
-7
-7
-6
-6
-6

Relative Humidity (%)

82
85
87
87
88
88
90
90
90
88
90
88
88
90
90
92
92
90
90
89
84
82
78
81

Pressure (mb)

1028
1029
1029
1029
1029
1029
1029
1029
1028
1028
1027
1026
1025
1024
1023
1022
1022
1021
1020
1019
1018
1016
1015
1014

Ozone (du)

346
348
344
339
335
333
332
330
335
340
344
348
352
355
357
359
361
361
361
360
360
359
358
351

Thursday 25

Waxing Crescent 30%

11:08

22:07

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
10 Bad
11 Bad
12 Bad

Sun - Rise: 07:33, Set: 16:12, Transit: 11:53. Moon - Rise: 11:08, Set: 22:07. Civil Dark: 16:47 - 06:59. Nautical Dark: 17:25 - 06:21. Astro Dark: 18:01 - 05:44

Total Clouds (% Sky Obscured)

97
90
84
78
85
93
100
100
100
99
93
87
81
87
93
100
99
98
97
97
97
99

Low Clouds (% Sky Obscured)

93
90
84
78
85
85
86
80
79
77
83
87
77
76
75
70
69
68
66
74
82
90

Medium Clouds (% Sky Obscured)

0
0
0
0
2
3
4
12
19
30
31
31
32
51
70
91
88
86
86
92
96
95

High Clouds (% Sky Obscured)

50
46
43
44
59
72
85
80
80
76
75
74
81
69
33
0
0
5
5
25
50
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
6
3

Fog (%)

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

Precipitation Type

Frozen rai
Frozen rai
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
Ice pellet
Snow

Precipitation Probability (%)

78
62
44
31
22
13
9
9
8
7
7
7
2
5
5
4
3
4
3
44
69
95

Precipitation Amount (mm)

0.5
0.3
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.3
0.7

Wind Speed/Direction (mph)

1
2
3
5
7
8
9
9
9
9
9
9
9
9
9
9
9
9
9
9
7
5

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-5
-5
-5
-5
-5
-9
-10
-10
-11
-12
-12
-12
-12
-12
-12
-12
-12
-10
-11
-11
-11
-10

Dew Point (°C)

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

Relative Humidity (%)

84
89
89
87
87
90
90
90
90
90
88
88
88
87
87
87
87
87
85
84
87
92

Pressure (mb)

1014
1013
1013
1013
1013
1013
1013
1013
1014
1014
1014
1014
1014
1013
1013
1012
1012
1011
1010
1010
1008
1007

Ozone (du)

344
337
334
330
327
324
322
320
318
315
313
308
304
299
297
295
294
294
295
295
296
296

Forecast for Sorel-Tracy, Montérégie, Canada (46.04,-73.11)

Generated: 19/12/25 15:37:38. Forecast: 19/12/25 to 25/12/25. Timezone: UTC-5.00