Clear Outside v1.0 - International Weather Forecasts For Astronomers

Monday 1

Waxing Gibbous 88%

14:20

04:26

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
15 Bad
16 Bad
17 Bad
18 Bad
19 Bad

Sun - Rise: 07:24, Set: 16:20, Transit: 11:52. Moon - Rise: 14:20, Set: 04:26. Civil Dark: 16:54 - 06:51. Nautical Dark: 17:31 - 06:14. Astro Dark: 18:06 - 05:38

Total Clouds (% Sky Obscured)

76
81
86
100
100
100
100
100
100
100
100
100
100
100
99
99
97
94
92
87
78
78
80
60

Low Clouds (% Sky Obscured)

1
0
6
0
1
8
16
58
69
59
64
68
73
85
76
71
70
71
68
72
71
70
74
52

Medium Clouds (% Sky Obscured)

76
81
86
100
100
100
97
100
100
100
100
100
100
100
95
98
93
88
74
14
0
0
0
0

High Clouds (% Sky Obscured)

76
81
86
100
100
100
100
100
100
100
100
100
100
55
55
50
0
0
0
0
0
0
0
0

ISS Passover

Visibility (miles)

9
9
9
9
9
3
2
2
3
3
2
0
0
0
0
0
0
2
8
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
Snow
Snow
None
None
Snow
None
None
None
None
None
None
None
None

Precipitation Probability (%)

0
0
0
0
16
20
23
3
14
17
45
52
46
42
43
43
28
11
3
5
14
3
1
0

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

2
3
3
4
4
4
4
4
5
5
5
4
5
5
5
5
5
5
5
5
4
4
3
3

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

80
83
85
85
85
88
90
92
92
92
92
94
90
90
89
90
89
87
84
82
84
84
80
79

Pressure (mb)

1027
1027
1026
1025
1024
1023
1023
1022
1021
1020
1020
1019
1019
1018
1018
1017
1016
1015
1014
1014
1014
1014
1014
1014

Ozone (du)

382
382
384
385
384
383
387
391
393
395
395
394
393
395
396
395
392
390
388
387
388
385
381
381

Tuesday 2

Waxing Gibbous 95%

14:54

05:53

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

Sun - Rise: 07:25, Set: 16:20, Transit: 11:53. Moon - Rise: 14:54, Set: 05:53. Civil Dark: 16:53 - 06:52. Nautical Dark: 17:31 - 06:15. Astro Dark: 18:06 - 05:39

Total Clouds (% Sky Obscured)

56
6
6
5
5
20
49
70
70
71
70
100
86
94
99
100
100
100
100
98
98
98
97
97

Low Clouds (% Sky Obscured)

36
2
2
1
1
16
49
70
70
66
37
42
36
53
40
46
70
87
89
88
92
93
92
89

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
2
1
2
17
100
72
82
89
96
86
96
100
96
97
96
93
93

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
3
0
0
28
88
50
60
94
100
94
100
100
80
75
65
75
60

ISS Passover

Visibility (miles)

9
9
9
9
9
8
8
4
4
3
1
0
5
8
9
9
9
9
9
9
8
4
1
0

Fog (%)

0
0
0
21
29
99
99
97
95
93
98
72
59
16
2
2
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 (%)

0
0
0
0
0
0
0
0
0
0
0
0
1
1
2
12
7
14
21
30
44
47
82
89

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.1
0.6
0.8

Wind Speed/Direction (mph)

2
2
2
2
2
2
2
2
1
1
2
3
4
4
6
8
9
10
10
10
10
11
11
12

Chance of Frost

Temperature (°C)

-6
-8
-8
-8
-9
-9
-9
-9
-9
-9
-9
-8
-7
-7
-5
-4
-2
-2
-1
-1
-1
-1
-0
-1

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

87
88
90
90
90
92
92
92
92
92
94
94
94
90
89
84
82
81
83
80
83
87
91
98

Pressure (mb)

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

Ozone (du)

378
375
374
372
370
368
370
367
363
360
358
356
359
359
357
354
353
351
348
348
350
352
356
360

Wednesday 3

Waxing Gibbous 99%

15:39

07:20

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
15 Bad
16 OK
17 OK
18 OK
19 OK

Sun - Rise: 07:26, Set: 16:20, Transit: 11:53. Moon - Rise: 15:39, Set: 07:20. Civil Dark: 16:53 - 06:53. Nautical Dark: 17:30 - 06:15. Astro Dark: 18:06 - 05:40

Total Clouds (% Sky Obscured)

97
98
100
99
96
82
90
98
82
62
88
94
78
52
57
81
95
85
69
43
11
14
19
18

Low Clouds (% Sky Obscured)

88
89
98
79
88
69
75
85
75
1
37
48
50
4
9
63
91
73
51
25
11
14
19
18

Medium Clouds (% Sky Obscured)

94
96
96
84
46
44
48
61
69
62
72
74
74
52
57
69
75
50
23
0
0
0
0
0

High Clouds (% Sky Obscured)

50
71
52
29
3
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
1
1
2
9
0
8
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
Snow
Snow
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

79
63
51
40
25
40
38
6
4
1
1
0
0
0
0
0
8
8
10
5
3
1
0
1

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

-0
-0
-0
-1
-1
-1
-2
-4
-5
-7
-8
-9
-10
-11
-10
-10
-10
-10
-11
-11
-12
-13
-13
-14

Feels Like (°C)

-6
-6
-6
-7
-7
-6
-7
-10
-12
-12
-13
-15
-16
-16
-15
-16
-16
-17
-17
-18
-18
-17
-17
-17

Dew Point (°C)

-1
-1
-1
-2
-3
-3
-3
-6
-8
-9
-12
-14
-14
-15
-15
-16
-15
-16
-16
-16
-17
-17
-17
-18

Relative Humidity (%)

98
96
92
89
87
84
91
85
79
80
74
71
72
72
68
64
64
62
65
66
66
68
70
71

Pressure (mb)

1009
1008
1008
1008
1008
1008
1009
1010
1011
1012
1013
1014
1015
1015
1016
1016
1016
1017
1018
1019
1020
1022
1023
1024

Ozone (du)

365
370
372
373
372
371
371
371
365
374
371
378
386
396
403
417
423
427
412
408
405
401
396
393

Thursday 4

Full Moon 100%

16:39

08:39

20 Good
21 Good
22 Good
23 Good
00 Good
01 Good
02 OK
03 Bad
04 OK
05 OK
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

Sun - Rise: 07:27, Set: 16:19, Transit: 11:53. Moon - Rise: 16:39, Set: 08:39. Civil Dark: 16:53 - 06:54. Nautical Dark: 17:30 - 06:16. Astro Dark: 18:06 - 05:41

Total Clouds (% Sky Obscured)

16
15
11
8
5
10
14
44
48
46
50
62
80
96
97
99
100
99
98
98
98
99
100
100

Low Clouds (% Sky Obscured)

16
14
10
6
2
2
5
4
9
38
50
49
80
93
94
97
99
88
77
66
72
81
89
86

Medium Clouds (% Sky Obscured)

0
0
0
2
3
4
5
44
48
46
50
62
80
87
93
81
97
98
95
86
87
77
75
55

High Clouds (% Sky Obscured)

0
0
0
0
0
2
3
22
20
20
20
17
16
11
37
68
100
67
37
25
25
42
60
60

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
1
1
0
0
0
1
1
1
2

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
None
None
None
None
None

Precipitation Probability (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
8
28
30
41
36
33
30
27
25
14

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-17
-17
-16
-17
-17
-17
-17
-17
-18
-18
-18
-18
-18
-17
-16
-15
-14
-12
-10
-9
-9
-10
-10
-10

Dew Point (°C)

-18
-17
-17
-17
-17
-17
-17
-18
-17
-17
-17
-17
-16
-16
-15
-12
-10
-9
-7
-6
-6
-6
-6
-7

Relative Humidity (%)

73
76
81
81
81
82
83
82
82
78
76
78
79
72
70
80
83
87
92
89
89
89
90
87

Pressure (mb)

1024
1025
1025
1025
1025
1025
1025
1025
1025
1024
1024
1023
1023
1022
1021
1020
1018
1017
1015
1015
1014
1014
1013
1013

Ozone (du)

391
389
387
383
379
374
366
362
362
362
359
358
358
358
357
356
357
356
353
348
350
350
343
341

Friday 5

Waning Gibbous 97%

17:53

09:44

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
15 Bad
16 Bad
17 Bad
18 Bad
19 Bad

Sun - Rise: 07:28, Set: 16:19, Transit: 11:54. Moon - Rise: 17:53, Set: 09:44. Civil Dark: 16:53 - 06:55. Nautical Dark: 17:30 - 06:17. Astro Dark: 18:06 - 05:41

Total Clouds (% Sky Obscured)

100
100
99
97
96
97
98
100
99
98
98
97
97
98
96
95
95
94
94
94
93
91
89
91

Low Clouds (% Sky Obscured)

86
86
81
76
71
72
74
76
78
84
88
89
91
92
90
88
86
87
88
89
86
83
80
81

Medium Clouds (% Sky Obscured)

49
76
75
86
25
30
97
99
98
96
95
96
95
93
83
73
63
50
41
30
33
39
45
65

High Clouds (% Sky Obscured)

60
67
67
53
44
56
56
52
49
51
55
67
68
69
59
37
12
9
6
2
1
1
0
0

ISS Passover

Visibility (miles)

8
9
9
9
1
0
0
0
0
0
0
0
3
6
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
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
None
None
None
None
None
None
None

Precipitation Probability (%)

12
11
16
25
27
46
64
69
67
73
64
73
61
47
43
39
34
32
29
27
27
26
25
21

Precipitation Amount (mm)

0
0
0
0
0
0.2
0.5
0.5
0.4
0.5
0.3
0.4
0.3
0.2
0.1
0.1
0.1
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

6
6
5
5
5
4
4
4
3
3
4
4
4
5
5
5
5
5
5
4
3
4
4
4

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-10
-10
-10
-9
-10
-9
-9
-9
-8
-8
-8
-8
-8
-8
-8
-8
-8
-8
-5
-4
-3
-3
-3
-2

Dew Point (°C)

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

Relative Humidity (%)

87
85
87
87
90
94
96
96
96
96
98
96
92
91
91
86
84
79
84
87
91
92
92
94

Pressure (mb)

1013
1012
1012
1011
1011
1010
1010
1009
1009
1008
1008
1008
1008
1008
1008
1008
1007
1007
1007
1007
1007
1007
1008
1008

Ozone (du)

341
339
332
330
326
325
329
333
344
348
351
360
361
362
364
359
354
349
347
345
343
340
337
334

Saturday 6

Waning Gibbous 92%

19:14

10:32

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
15 Bad
16 OK
17 OK
18 Good
19 Good

Sun - Rise: 07:29, Set: 16:19, Transit: 11:54. Moon - Rise: 19:14, Set: 10:32. Civil Dark: 16:53 - 06:55. Nautical Dark: 17:30 - 06:18. Astro Dark: 18:06 - 05:42

Total Clouds (% Sky Obscured)

94
97
98
99
100
96
92
91
80
71
64
60
55
60
88
97
100
87
76
63
45
29
13
14

Low Clouds (% Sky Obscured)

81
82
84
87
89
73
59
47
44
32
29
19
10
0
20
40
60
43
26
9
23
29
13
14

Medium Clouds (% Sky Obscured)

71
74
82
90
98
89
82
77
72
71
64
60
55
60
88
90
85
55
28
16
5
2
0
0

High Clouds (% Sky Obscured)

0
0
3
6
9
25
55
29
29
25
25
40
54
50
36
17
0
0
0
0
0
0
0
0

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
8
6
4
5
7
8
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 (%)

16
9
9
10
11
17
20
22
19
15
5
19
24
23
27
22
10
8
5
1
1
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)

4
5
5
5
6
7
6
7
9
9
9
10
10
10
10
10
10
10
9
8
8
7
7
6

Chance of Frost

Temperature (°C)

-3
-4
-5
-5
-5
-6
-6
-6
-7
-8
-9
-11
-11
-11
-11
-10
-10
-10
-11
-12
-12
-13
-14
-14

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

92
92
92
90
90
90
90
90
90
88
87
85
81
80
76
75
70
68
67
67
69
70
72
74

Pressure (mb)

1008
1008
1008
1008
1009
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1018
1018
1018
1019
1020
1021
1021
1022
1023

Ozone (du)

334
333
333
332
331
331
331
332
333
336
338
341
347
353
359
370
381
392
398
404
410
416
423
429

Sunday 7

Waning Gibbous 84%

No Rise

11:07

20 Good
21 Good
22 OK
23 OK
00 OK
01 OK
02 OK
03 OK
04 OK
05 Bad
06 Bad
07 Bad
08 Bad
09 Bad
10 Bad
11 Bad
12 Bad

Sun - Rise: 07:30, Set: 16:19, Transit: 11:55. Moon - Rise: No Rise, Set: 11:07. Civil Dark: 16:53 - 06:56. Nautical Dark: 17:30 - 06:19. Astro Dark: 18:06 - 05:43

Total Clouds (% Sky Obscured)

11
7
7
6
4
5
4
5
19
33
50
68
85
100
100
100
100

Low Clouds (% Sky Obscured)

11
5
4
2
1
0
0
0
0
0
3
22
39
55
63
70
79

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
13
27
40
60
81
100
95
89
83

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
2
4
6
37
67
100
68
36
4

ISS Passover

Visibility (miles)

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

Fog (%)

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

Precipitation Probability (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
10
17
24

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

-14
-15
-16
-16
-17
-18
-18
-18
-18
-18
-17
-16
-15
-14
-12
-11
-10

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

76
77
80
80
80
80
81
81
82
83
83
83
79
76
73
76
81

Pressure (mb)

1023
1024
1024
1024
1025
1025
1025
1025
1025
1025
1025
1025
1024
1024
1024
1022
1021

Ozone (du)

429
430
430
430
430
430
433
435
438
438
438
437
438
440
441
437
433

Forecast for ByWard Market, Ottawa, Canada (45.42,-75.69)

Generated: 01/12/25 20:00:21. Forecast: 01/12/25 to 07/12/25. Timezone: UTC-5.00