Clear Outside v1.0 - International Weather Forecasts For Astronomers

Monday 12

Full Moon 100%

20:55

05:06

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

Sun - Rise: 05:34, Set: 20:23, Transit: 12:59. Moon - Rise: 20:55, Set: 05:06. Civil Dark: 20:58 - 05:00. Nautical Dark: 21:41 - 04:16. Astro Dark: 22:32 - 03:25

Total Clouds (% Sky Obscured)

50
53
59
90
67
67
76
64
43
23
71
58
35
2
17
17
30
23
20
30
26
3
0
54

Low Clouds (% Sky Obscured)

4
9
10
9
9
5
15
10
3
1
0
0
1
0
17
17
30
0
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

50
53
59
86
56
62
58
15
12
8
58
50
31
2
2
6
19
15
13
20
21
3
0
0

High Clouds (% Sky Obscured)

4
25
3
0
6
1
3
3
42
17
20
19
3
0
0
0
0
0
0
3
0
0
0
50

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

Chance of Frost

Temperature (°C)

10
9
8
9
8
7
6
7
8
11
14
16
18
20
22
23
24
25
24
23
20
17
15
14

Feels Like (°C)

9
7
6
7
6
4
4
5
6
8
12
13
16
17
20
22
24
26
27
24
20
19
16
14

Dew Point (°C)

5
3
2
3
3
3
3
3
4
4
5
6
6
7
8
9
10
12
14
15
14
14
13
12

Relative Humidity (%)

71
66
64
67
70
74
76
73
73
62
56
51
45
42
40
39
41
44
52
61
69
82
89
86

Pressure (mb)

1027
1027
1027
1026
1026
1026
1025
1025
1025
1024
1023
1022
1021
1020
1019
1018
1018
1017
1017
1017
1018
1019
1020
1020

Ozone (du)

354
352
351
348
348
346
345
344
344
344
344
344
342
343
343
342
340
341
341
336
336
337
338
335

Tuesday 13

Waning Gibbous 100%

22:01

05:34

00 OK
01 OK
02 Bad
03 OK
04 Bad
05 Bad
06 Bad
07 Bad
08 Bad
09 Bad
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

Sun - Rise: 05:33, Set: 20:25, Transit: 12:59. Moon - Rise: 22:01, Set: 05:34. Civil Dark: 20:59 - 04:58. Nautical Dark: 21:43 - 04:14. Astro Dark: 22:35 - 03:23

Total Clouds (% Sky Obscured)

16
35
59
35
95
100
100
83
100
100
61
45
62
100
90
92
99
97
89
94
96
95
100
81

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
2
27
79
25
30
20
16
34
41

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
8
0
2
2
12
19
34
26
6
5
18

High Clouds (% Sky Obscured)

14
34
56
34
95
100
100
83
100
100
61
45
62
100
90
92
99
86
85
89
92
95
100
79

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
1
14
17
14
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)

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

Chance of Frost

Temperature (°C)

13
12
11
10
10
10
10
11
13
15
17
19
20
22
23
24
24
25
24
23
21
19
18
18

Feels Like (°C)

11
11
10
8
9
7
8
8
10
12
14
17
19
21
22
23
25
25
25
24
21
19
18
18

Dew Point (°C)

11
10
9
8
8
9
9
9
10
11
12
14
15
16
17
18
19
19
21
21
19
18
17
17

Relative Humidity (%)

89
89
85
88
90
91
93
90
83
78
73
72
70
69
68
70
71
71
79
85
86
93
93
93

Pressure (mb)

1020
1020
1020
1021
1021
1021
1021
1022
1022
1022
1021
1021
1020
1020
1019
1018
1018
1017
1017
1017
1017
1018
1018
1018

Ozone (du)

334
334
332
330
329
328
328
327
326
326
325
325
325
326
326
326
326
325
325
325
327
327
328
328

Wednesday 14

Waning Gibbous 98%

23:03

06:09

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
23 Bad

Sun - Rise: 05:32, Set: 20:26, Transit: 12:59. Moon - Rise: 23:03, Set: 06:09. Civil Dark: 21:00 - 04:57. Nautical Dark: 21:44 - 04:13. Astro Dark: 22:37 - 03:21

Total Clouds (% Sky Obscured)

92
86
82
82
47
45
58
99
94
100
100
100
95
96
97
99
100
100
99
100
100
100
100
99

Low Clouds (% Sky Obscured)

48
39
31
14
15
10
10
15
15
33
55
92
79
76
72
72
70
66
62
58
62
68
76
81

Medium Clouds (% Sky Obscured)

40
36
40
77
28
33
39
66
76
80
84
93
66
61
65
63
66
70
75
76
79
78
76
74

High Clouds (% Sky Obscured)

86
75
69
80
47
45
55
98
85
98
100
100
60
51
54
53
76
85
90
85
93
72
65
71

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
1
2
5
11
25
20
4
0
0
1
2
0
2
5
4
2
1
3
4
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)

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

Chance of Frost

Temperature (°C)

17
16
16
15
14
14
14
14
15
16
17
18
18
19
19
20
21
21
21
20
19
19
18
17

Feels Like (°C)

17
17
16
15
14
13
13
14
15
16
16
17
17
18
18
19
20
21
22
21
20
19
18
17

Dew Point (°C)

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

Relative Humidity (%)

93
95
96
95
95
95
93
93
93
93
93
92
92
92
91
82
82
84
86
88
91
92
92
92

Pressure (mb)

1018
1018
1018
1018
1018
1017
1018
1018
1018
1018
1017
1017
1017
1016
1016
1015
1014
1014
1013
1013
1013
1013
1013
1013

Ozone (du)

329
328
329
330
330
330
330
332
333
332
333
333
334
335
335
336
337
338
339
339
340
338
337
336

Thursday 15

Waning Gibbous 94%

23:58

06:54

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
23 Bad

Sun - Rise: 05:30, Set: 20:27, Transit: 12:59. Moon - Rise: 23:58, Set: 06:54. Civil Dark: 21:02 - 04:56. Nautical Dark: 21:46 - 04:11. Astro Dark: 22:39 - 03:19

Total Clouds (% Sky Obscured)

100
100
99
100
100
99
98
98
97
96
94
97
99
100
99
98
95
61
58
53
53
58
58
83

Low Clouds (% Sky Obscured)

88
95
93
98
100
98
96
96
96
96
92
94
93
91
84
83
77
40
32
27
33
36
38
31

Medium Clouds (% Sky Obscured)

57
51
45
33
25
27
22
18
18
14
12
16
17
33
59
70
66
61
55
37
37
40
33
26

High Clouds (% Sky Obscured)

77
84
74
51
62
49
34
3
12
18
28
49
73
93
62
34
1
0
2
3
1
0
2
15

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
6
9
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
None
None
None
None
None
None
None
None
Very Light Rain
Light Rain
Very Light Rain
None
None
None
None

Precipitation Probability (%)

0
0
3
4
3
11
20
5
5
2
0
5
4
18
31
38
43
59
73
53
6
1
0
0

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.3
0.4
0.3
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

17
16
16
16
15
15
15
15
16
17
18
19
19
19
21
21
21
22
23
23
22
21
20
19

Dew Point (°C)

16
16
15
15
15
15
15
15
15
15
16
16
16
17
17
16
17
17
17
18
18
17
17
16

Relative Humidity (%)

95
93
93
95
95
96
96
95
92
89
88
81
84
84
79
75
77
80
81
89
92
93
95
95

Pressure (mb)

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

Ozone (du)

335
331
330
330
329
328
328
329
330
331
331
330
330
331
333
334
335
335
335
336
336
335
333
333

Friday 16

Waning Gibbous 88%

No Rise

07:49

00 Bad
01 Bad
02 Bad
03 Bad
04 OK
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

Sun - Rise: 05:29, Set: 20:28, Transit: 12:59. Moon - Rise: No Rise, Set: 07:49. Civil Dark: 21:03 - 04:54. Nautical Dark: 21:48 - 04:10. Astro Dark: 22:41 - 03:16

Total Clouds (% Sky Obscured)

61
58
70
48
37
61
67
65
77
88
100
100
100
100
92
85
82
77
80
85
90
95
95
96

Low Clouds (% Sky Obscured)

25
21
28
27
29
30
32
32
47
62
76
75
74
73
76
78
81
70
58
47
48
49
51
60

Medium Clouds (% Sky Obscured)

22
15
12
9
4
5
6
4
21
37
52
68
83
99
79
61
43
30
17
0
18
37
59
47

High Clouds (% Sky Obscured)

6
0
0
0
2
25
45
49
75
88
100
100
100
100
70
40
29
77
80
85
90
95
95
59

ISS Passover

Visibility (miles)

9
9
9
9
9
7
2
2
9
9
9
9
6
4
1
4
6
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
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
None
None
None
None
None

Precipitation Probability (%)

0
0
0
0
0
1
3
6
27
38
47
89
95
95
95
95
95
95
83
47
35
20
0
0

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0.5
0.8
1.1
1.1
1.1
1.1
0.7
0.4
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

16
16
15
15
15
15
15
16
17
18
20
21
22
23
24
23
22
21
21
20
20
19
17
16

Feels Like (°C)

17
17
17
17
17
16
15
16
17
18
19
20
21
24
25
22
19
18
19
22
23
20
19
19

Dew Point (°C)

15
15
15
15
15
14
15
16
16
17
18
20
21
22
23
21
18
15
15
15
14
14
13
13

Relative Humidity (%)

95
96
96
98
98
98
100
98
93
92
91
91
92
94
97
87
78
69
69
70
70
72
77
79

Pressure (mb)

1007
1007
1006
1006
1005
1005
1005
1005
1005
1004
1003
1002
1002
1001
1001
1001
1001
1001
1001
1001
1002
1002
1003
1003

Ozone (du)

333
335
335
334
337
334
333
334
333
332
332
332
334
337
339
341
344
347
355
364
373
372
372
372

Saturday 17

Waning Gibbous 81%

00:43

08:54

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
23 Bad

Sun - Rise: 05:28, Set: 20:29, Transit: 12:59. Moon - Rise: 00:43, Set: 08:54. Civil Dark: 21:04 - 04:53. Nautical Dark: 21:49 - 04:08. Astro Dark: 22:43 - 03:14

Total Clouds (% Sky Obscured)

97
97
97
98
99
98
97
97
90
82
80
92
96
97
96
96
95
92
86
83
74
74
75
78

Low Clouds (% Sky Obscured)

70
80
82
76
73
73
79
76
60
45
30
20
10
0
0
0
0
0
0
4
10
16
18
19

Medium Clouds (% Sky Obscured)

32
20
25
32
46
57
64
70
75
82
80
91
90
87
81
72
68
40
22
6
8
13
32
42

High Clouds (% Sky Obscured)

60
69
79
84
99
76
50
25
45
70
75
74
63
38
19
12
8
8
9
18
58
74
75
78

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
7
5
2
5
7
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
Very Light Rain
Very Light Rain
None
None
None
None
None
Light Rain
Light Rain
Light Rain
Light Rain
Very Light Rain

Precipitation Probability (%)

0
0
0
0
0
8
17
26
30
34
44
56
60
63
53
38
26
39
54
71
83
85
77
53

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

15
15
14
14
14
14
15
15
16
17
17
17
18
19
21
20
20
20
20
19
19
18
17
15

Feels Like (°C)

18
17
17
13
14
14
13
13
12
17
16
16
16
16
16
20
19
18
18
18
19
17
16
16

Dew Point (°C)

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

Relative Humidity (%)

82
84
87
89
92
93
93
90
90
92
90
90
81
72
65
70
75
80
84
88
91
92
90
92

Pressure (mb)

1003
1004
1004
1004
1004
1004
1005
1005
1006
1006
1006
1006
1005
1005
1004
1004
1003
1003
1003
1003
1003
1003
1003
1004

Ozone (du)

372
372
372
372
371
371
371
370
370
371
373
374
372
370
369
368
368
368
368
369
369
373
377
380

Sunday 18

Waning Gibbous 72%

01:19

10:06

Sun - Rise: 05:27, Set: 20:30, Transit: 12:59. Moon - Rise: 01:19, Set: 10:06. Civil Dark: 21:05 - 04:52. Nautical Dark: 21:51 - 04:07. Astro Dark: 22:45 - 03:12

Total Clouds (% Sky Obscured)

Low Clouds (% Sky Obscured)

Medium Clouds (% Sky Obscured)

High Clouds (% Sky Obscured)

ISS Passover

Visibility (miles)

Fog (%)

Precipitation Type

Precipitation Probability (%)

Precipitation Amount (mm)

Wind Speed/Direction (mph)

Chance of Frost

Temperature (°C)

Feels Like (°C)

Dew Point (°C)

Relative Humidity (%)

Pressure (mb)

Ozone (du)

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

Generated: 12/05/25 00:18:18. Forecast: 12/05/25 to 18/05/25. Timezone: UTC-4.00