Clear Outside v1.0 - International Weather Forecasts For Astronomers

Wednesday 24

Waxing Crescent 21%

10:30

20:57

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: 07:30, Set: 16:15, Transit: 11:52. Moon - Rise: 10:30, Set: 20:57. Civil Dark: 16:48 - 06:56. Nautical Dark: 17:26 - 06:19. Astro Dark: 18:02 - 05:43

Total Clouds (% Sky Obscured)

96
91
85
84
81
80
84
77
78
95
100
100
100
100
100
100
100
100
100
100
100
100
100
98

Low Clouds (% Sky Obscured)

78
74
71
70
66
66
77
74
78
95
100
99
88
73
71
93
94
97
98
100
100
98
100
96

Medium Clouds (% Sky Obscured)

19
0
0
0
0
0
0
2
19
89
100
100
100
100
100
100
100
100
100
100
100
100
100
91

High Clouds (% Sky Obscured)

0
0
0
0
0
0
2
36
43
51
100
100
100
83
89
99
100
100
100
100
100
60
60
0

ISS Passover

Visibility (miles)

1
1
2
3
7
8
9
9
9
9
6
3
9
9
2
7
1
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
Snow
Snow
Snow
Snow
Snow
Snow
Snow
None

Precipitation Probability (%)

0
0
7
5
15
2
1
0
0
0
2
3
2
12
1
25
89
95
95
88
94
95
79
47

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.7
0.8
0.7
0.6
0.7
0.8
0.5
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

87
89
85
84
80
82
89
90
90
90
88
90
90
92
92
90
90
96
96
96
96
96
96
92

Pressure (mb)

1021
1022
1022
1023
1024
1025
1025
1026
1026
1026
1025
1024
1023
1023
1022
1021
1020
1019
1017
1016
1015
1015
1014
1015

Ozone (du)

366
359
348
345
341
339
335
330
327
324
325
326
328
334
337
340
343
363
374
375
382
384
389
400

Thursday 25

Waxing Crescent 30%

10:50

22:08

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

Sun - Rise: 07:30, Set: 16:15, Transit: 11:52. Moon - Rise: 10:50, Set: 22:08. Civil Dark: 16:49 - 06:56. Nautical Dark: 17:26 - 06:19. Astro Dark: 18:02 - 05:43

Total Clouds (% Sky Obscured)

99
97
96
94
98
78
75
65
3
4
8
3
5
5
5
4
2
2
6
6
6
7
9
51

Low Clouds (% Sky Obscured)

97
94
91
88
95
77
73
65
1
1
8
1
1
1
1
1
0
0
1
1
1
0
1
1

Medium Clouds (% Sky Obscured)

36
39
39
37
20
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
4
5
0
1
5
51

ISS Passover

Visibility (miles)

4
9
9
7
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 (%)

32
30
30
26
17
13
5
3
2
1
0
1
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)

10
10
11
12
13
13
13
11
11
10
9
8
7
7
6
6
5
4
3
2
2
1
2
4

Chance of Frost

Temperature (°C)

-5
-5
-5
-5
-6
-7
-9
-10
-11
-13
-14
-15
-16
-17
-18
-19
-19
-20
-21
-22
-22
-23
-23
-22

Feels Like (°C)

-11
-10
-11
-12
-13
-14
-15
-17
-17
-18
-19
-20
-20
-21
-22
-23
-23
-23
-23
-23
-24
-24
-24
-23

Dew Point (°C)

-6
-7
-7
-8
-10
-11
-13
-14
-15
-17
-18
-19
-19
-20
-21
-22
-23
-24
-24
-25
-25
-25
-25
-25

Relative Humidity (%)

89
87
82
79
76
74
72
72
72
71
73
73
75
75
74
73
73
71
74
75
76
76
77
72

Pressure (mb)

1015
1014
1014
1014
1015
1017
1018
1020
1021
1023
1024
1025
1025
1026
1026
1027
1028
1028
1028
1028
1029
1029
1029
1030

Ozone (du)

411
399
379
375
372
373
376
378
377
375
368
366
362
360
361
351
350
349
345
341
337
336
335
333

Friday 26

Waxing Crescent 41%

11:08

23:20

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: 07:30, Set: 16:16, Transit: 11:53. Moon - Rise: 11:08, Set: 23:20. Civil Dark: 16:50 - 06:56. Nautical Dark: 17:27 - 06:19. Astro Dark: 18:03 - 05:43

Total Clouds (% Sky Obscured)

85
100
98
100
100
100
100
100
100
100
100
100
100
100
100
100
100
97
100
98
98
85
72
64

Low Clouds (% Sky Obscured)

1
1
10
7
14
1
1
1
1
1
0
0
0
1
1
1
1
0
0
0
1
1
0
1

Medium Clouds (% Sky Obscured)

47
60
56
59
81
92
91
94
64
100
94
100
100
100
100
100
99
97
95
95
98
83
69
55

High Clouds (% Sky Obscured)

85
100
96
100
100
100
100
100
100
100
100
91
100
100
100
100
100
66
100
88
69
53
52
64

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
1
2
3
4
5
6
5
4
4
2
1
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)

3
2
1
2
2
4
5
6
6
6
5
6
5
5
5
4
4
4
4
4
4
4
4
4

Chance of Frost

Temperature (°C)

-19
-17
-17
-16
-16
-16
-16
-16
-16
-16
-15
-15
-15
-15
-14
-14
-14
-14
-14
-14
-14
-14
-14
-13

Feels Like (°C)

-22
-21
-21
-21
-20
-21
-21
-21
-21
-21
-20
-20
-20
-19
-19
-18
-18
-18
-18
-18
-18
-19
-18
-17

Dew Point (°C)

-23
-21
-21
-20
-20
-19
-19
-19
-19
-18
-18
-18
-18
-17
-17
-16
-16
-16
-16
-16
-16
-17
-16
-15

Relative Humidity (%)

72
71
70
70
71
73
81
80
79
81
80
81
80
79
79
79
81
83
81
83
83
82
83
81

Pressure (mb)

1030
1028
1028
1027
1027
1026
1025
1024
1023
1023
1023
1023
1023
1023
1022
1022
1023
1023
1023
1023
1024
1024
1025
1026

Ozone (du)

334
334
334
332
331
329
326
327
326
328
330
332
331
333
332
336
338
340
346
352
352
357
361
361

Saturday 27

First Quarter 52%

11:26

00:34

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

Sun - Rise: 07:30, Set: 16:17, Transit: 11:53. Moon - Rise: 11:26, Set: 00:34. Civil Dark: 16:50 - 06:57. Nautical Dark: 17:28 - 06:19. Astro Dark: 18:04 - 05:44

Total Clouds (% Sky Obscured)

62
65
64
15
9
2
4
5
8
20
16
55
11
19
25
29
34
34
42
41
48
43
39
28

Low Clouds (% Sky Obscured)

9
16
22
15
9
2
4
5
6
5
4
4
9
10
13
12
9
10
10
15
24
27
16
3

Medium Clouds (% Sky Obscured)

58
52
9
0
0
0
0
0
0
0
9
55
0
0
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

62
45
30
1
0
0
0
0
0
2
0
0
0
0
0
0
0
0
1
3
4
25
39
28

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
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)

5
5
5
6
6
5
4
4
3
3
3
2
2
1
1
2
2
2
2
2
2
2
2
2

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-17
-16
-15
-14
-14
-13
-14
-16
-17
-18
-19
-19
-21
-19
-19
-19
-19
-19
-19
-19
-19
-19
-18
-15

Dew Point (°C)

-15
-15
-14
-13
-13
-13
-14
-15
-17
-17
-18
-19
-19
-19
-19
-19
-19
-20
-20
-19
-19
-19
-19
-16

Relative Humidity (%)

78
75
75
75
77
83
85
86
84
85
84
84
84
84
84
84
84
83
83
82
82
81
81
76

Pressure (mb)

1026
1026
1026
1026
1026
1026
1026
1027
1027
1027
1027
1027
1027
1027
1027
1027
1027
1026
1026
1026
1026
1025
1025
1025

Ozone (du)

359
361
355
354
350
350
351
352
351
354
359
359
362
362
363
361
366
366
364
361
359
355
355
352

Sunday 28

Waxing Gibbous 63%

11:46

01:51

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
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)

31
34
43
99
100
100
100
100
100
100
100
100
100
100
100
100
100
100
99
99
99
99
100
100

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
22
43
61
64
60
52
43
33
34
68
83
98
97
96
94
93
92
91

Medium Clouds (% Sky Obscured)

16
31
43
55
62
60
93
46
56
96
100
100
100
100
100
100
100
100
98
95
93
95
97
100

High Clouds (% Sky Obscured)

31
34
43
96
98
100
100
100
100
100
100
100
100
100
100
78
57
35
42
44
64
82
92
100

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
6
3
0
0
0
1
3
6

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
None
Frozen rai
Frozen rai
None
None
Snow
Snow
Frozen rai
Frozen rai
Frozen rai
Frozen rai
Frozen rai
Frozen rai
Light Rain

Precipitation Probability (%)

0
0
0
0
0
2
2
4
5
39
54
67
61
52
30
95
95
95
95
95
95
95
95
95

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0.1
0
0.3
0.2
0
0
0.7
1
1.1
1
1
1.1
1.1
1.2
1.2

Wind Speed/Direction (mph)

1
1
2
2
2
3
4
3
3
3
2
3
4
4
3
3
5
5
6
6
7
7
9
11

Chance of Frost

Temperature (°C)

-11
-9
-8
-7
-7
-7
-9
-10
-10
-8
-8
-7
-6
-6
-5
-5
-5
-5
-4
-4
-4
-4
-2
-1

Feels Like (°C)

-12
-10
-9
-8
-10
-11
-13
-13
-14
-13
-11
-11
-10
-10
-9
-8
-9
-10
-9
-10
-9
-10
-6
-6

Dew Point (°C)

-15
-13
-13
-11
-10
-10
-11
-11
-12
-10
-9
-9
-8
-8
-7
-7
-7
-6
-5
-5
-4
-4
-3
-2

Relative Humidity (%)

73
72
70
70
74
83
87
88
87
85
87
83
84
80
85
82
85
89
92
92
96
98
94
94

Pressure (mb)

1024
1022
1021
1020
1019
1017
1016
1015
1015
1013
1012
1011
1009
1007
1006
1004
997
996
994
993
991
990
989
989

Ozone (du)

352
349
348
347
342
345
342
342
345
348
345
343
341
340
341
342
343
344
344
346
347
348
359
369

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
100
100
100
100
99
99
99
99
99
99
99
100
100
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

93
95
97
97
97
97
97
98
99
99
98
97
97
98
99
93
87
81
83
84
86
86
88
88

Medium Clouds (% Sky Obscured)

96
89
85
85
83
81
82
82
84
89
92
94
96
97
98
99
99
100
100
100
100
98
96
94

High Clouds (% Sky Obscured)

72
44
75
79
73
67
54
43
30
32
36
42
33
20
7
19
32
49
56
71
75
90
90
85

ISS Passover

Visibility (miles)

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

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

Precipitation Probability (%)

95
92
71
66
59
51
44
40
36
45
54
60
58
57
53
58
62
60
62
64
63
58
55
53

Precipitation Amount (mm)

0.9
0.5
0.3
0.3
0.2
0
0.1
0
0
0.1
0.2
0.3
0.3
0.2
0.2
0.2
0.3
0.2
0.3
0.3
0.3
0.2
0.2
0.2

Wind Speed/Direction (mph)

13
13
13
13
14
14
15
15
15
16
16
16
16
16
17
17
17
18
19
19
19
19
19
19

Chance of Frost

Temperature (°C)

0
-0
-1
-2
-2
-3
-4
-4
-5
-5
-5
-6
-7
-8
-8
-9
-9
-9
-10
-10
-11
-11
-11
-12

Feels Like (°C)

-6
-6
-6
-7
-8
-8
-9
-9
-9
-9
-12
-12
-12
-12
-12
-13
-17
-17
-18
-18
-19
-19
-21
-21

Dew Point (°C)

-1
-1
-2
-2
-4
-5
-7
-8
-8
-7
-8
-8
-9
-9
-10
-10
-10
-11
-12
-12
-13
-13
-13
-14

Relative Humidity (%)

91
92
94
96
89
82
76
78
81
82
84
85
89
88
87
88
88
87
88
86
85
85
85
85

Pressure (mb)

988
988
988
987
987
988
988
988
989
989
989
989
990
990
990
990
991
992
993
994
995
996
997
999

Ozone (du)

380
378
376
374
375
377
379
381
382
384
385
386
387
389
391
393
392
391
390
395
399
404
408
412

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

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
100
100
99
99
98
98
100
100
100
100
100
88
80
74
78
79
79
84
91
100

Low Clouds (% Sky Obscured)

89
90
90
89
89
88
87
86
85
82
76
70
55
41
28
34
40
46
55
69
81

Medium Clouds (% Sky Obscured)

95
97
99
80
60
41
46
49
53
40
28
19
23
27
28
51
73
79
84
87
84

High Clouds (% Sky Obscured)

62
48
54
43
33
24
21
12
8
5
4
3
10
16
12
25
44
67
44
22
0

ISS Passover

Visibility (miles)

0
0
0
0
0
0
0
0
0
0
3
6
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

Precipitation Type

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

Precipitation Probability (%)

54
58
61
55
48
45
42
39
37
31
25
15
12
9
2
2
1
0
15
22
27

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

19
18
18
18
17
17
16
15
14
14
13
12
11
9
7
6
5
4
5
5
6

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

-14
-14
-14
-14
-14
-14
-14
-14
-14
-14
-15
-15
-15
-16
-16
-17
-16
-15
-14
-13
-13

Relative Humidity (%)

85
86
86
86
86
88
86
85
85
83
81
79
79
79
81
81
83
84
86
86
88

Pressure (mb)

1000
1001
1002
1002
1004
1005
1006
1007
1008
1009
1010
1011
1012
1012
1012
1012
1012
1011
1011
1011
1010

Ozone (du)

417
420
423
426
426
426
426
420
415
409
408
406
405
402
400
397
391
384
377
372
366

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

Generated: 24/12/25 09:44:24. Forecast: 24/12/25 to 30/12/25. Timezone: UTC-5.00