Clear Outside v1.0 - International Weather Forecasts For Astronomers

Thursday 30

Waxing Gibbous 100%

19:30

05:00

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
00 OK

Sun - Rise: 05:50, Set: 20:08, Transit: 12:59. Moon - Rise: 19:30, Set: 05:00. Civil Dark: 20:41 - 05:18. Nautical Dark: 21:22 - 04:37. Astro Dark: 22:07 - 03:52

Total Clouds (% Sky Obscured)

100
100
100
100
96
98
96
98
94
93
96
86
96
98
100
96
92
100
92
82
89
85
64
38

Low Clouds (% Sky Obscured)

91
95
100
81
88
81
76
72
61
64
55
64
85
92
99
89
73
80
67
67
64
55
52
36

Medium Clouds (% Sky Obscured)

100
100
100
99
76
87
71
48
31
33
46
27
57
69
38
68
71
99
92
81
75
69
37
3

High Clouds (% Sky Obscured)

100
100
99
75
75
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

ISS Passover

Visibility (miles)

8
5
4
6
9
9
9
1
2
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

Light Rain
Light Rain
Light Rain
Light Rain
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

95
95
95
88
35
5
3
1
1
14
2
2
5
0
4
3
5
17
8
1
0
0
0
0

Precipitation Amount (mm)

0.4
0.7
1.2
0.6
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

94
94
93
93
93
93
94
93
91
88
85
78
74
69
67
66
62
61
69
74
78
78
80
82

Pressure (mb)

1005
1005
1005
1005
1005
1006
1006
1007
1007
1008
1008
1008
1007
1007
1007
1008
1008
1008
1009
1009
1010
1010
1010
1011

Ozone (du)

375
376
377
378
383
386
382
383
386
388
388
387
385
387
393
394
394
396
399
398
396
398
401
400

Friday 1

Full Moon 100%

20:38

05:21

01 Bad
02 Bad
03 Bad
04 OK
05 Bad
06 Bad
07 Bad
08 OK
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: 05:49, Set: 20:10, Transit: 12:59. Moon - Rise: 20:38, Set: 05:21. Civil Dark: 20:42 - 05:16. Nautical Dark: 21:23 - 04:35. Astro Dark: 22:09 - 03:49

Total Clouds (% Sky Obscured)

59
61
52
37
60
68
54
38
57
68
93
100
98
80
90
89
83
84
83
91
84
69
65
46

Low Clouds (% Sky Obscured)

48
54
31
16
22
14
9
1
13
10
80
15
14
10
10
15
32
10
23
35
29
43
42
38

Medium Clouds (% Sky Obscured)

2
3
3
3
6
16
21
37
35
34
22
48
43
29
58
51
50
65
74
53
45
26
50
29

High Clouds (% Sky Obscured)

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

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
7
8
8
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
21
37
30
22
18
18
15
13
14
14
16
2
4
5
13
6

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

1
0
-0
-1
-1
-1
-1
-0
1
1
1
1
0
-0
-0
-1
-1
0
2
1
1
0
-0
-1

Relative Humidity (%)

82
82
80
82
84
86
81
75
71
66
61
55
53
48
48
46
43
49
60
65
70
67
70
72

Pressure (mb)

1011
1011
1011
1011
1012
1012
1013
1013
1013
1013
1013
1012
1012
1011
1011
1011
1011
1011
1011
1012
1013
1013
1013
1013

Ozone (du)

398
397
397
399
399
400
402
402
400
400
400
402
406
409
409
410
415
415
416
415
413
412
411
409

Saturday 2

Waning Gibbous 100%

21:45

05:45

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
00 Bad

Sun - Rise: 05:47, Set: 20:11, Transit: 12:59. Moon - Rise: 21:45, Set: 05:45. Civil Dark: 20:44 - 05:15. Nautical Dark: 21:25 - 04:34. Astro Dark: 22:11 - 03:47

Total Clouds (% Sky Obscured)

51
59
76
85
96
95
85
57
46
49
88
83
98
100
83
82
68
71
68
71
69
60
62
63

Low Clouds (% Sky Obscured)

34
38
45
52
81
74
70
57
45
34
59
50
51
49
52
45
28
25
25
30
22
16
19
22

Medium Clouds (% Sky Obscured)

43
59
20
31
37
42
7
2
28
44
44
35
71
81
46
45
27
33
37
30
33
37
48
40

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 (%)

7
4
1
0
2
9
3
1
9
17
25
15
12
10
9
9
6
21
7
4
2
2
2
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

1
0
-1
-1
-2
-2
-1
2
4
6
7
6
6
7
6
6
6
6
6
4
2
1
1
0

Dew Point (°C)

-1
-2
-2
-2
-3
-3
-3
-2
-1
-1
-1
-1
-1
-2
-2
-2
-2
-0
1
1
0
-1
-2
-2

Relative Humidity (%)

73
72
72
72
71
73
70
63
58
52
48
46
47
42
41
40
42
49
57
62
66
66
68
68

Pressure (mb)

1013
1013
1013
1014
1014
1014
1015
1015
1015
1014
1014
1014
1013
1013
1013
1012
1012
1012
1012
1013
1013
1013
1014
1013

Ozone (du)

409
408
408
407
408
409
410
411
413
413
414
417
420
420
414
406
402
401
400
400
396
394
394
394

Sunday 3

Waning Gibbous 98%

22:49

06:15

01 Bad
02 OK
03 OK
04 OK
05 OK
06 OK
07 OK
08 OK
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: 05:46, Set: 20:12, Transit: 12:59. Moon - Rise: 22:49, Set: 06:15. Civil Dark: 20:45 - 05:13. Nautical Dark: 21:26 - 04:32. Astro Dark: 22:13 - 03:45

Total Clouds (% Sky Obscured)

50
44
39
43
40
32
27
38
51
89
100
100
100
100
100
95
58
65
95
93
60
63
73
97

Low Clouds (% Sky Obscured)

8
1
2
2
2
2
2
13
26
62
72
71
73
69
65
55
14
29
64
68
39
49
60
81

Medium Clouds (% Sky Obscured)

40
42
39
43
40
29
21
31
34
38
43
30
25
25
24
21
22
24
28
55
60
63
73
90

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
0
0
0
6
12
15
12
6

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
1
25
5
7
4
5
5
2
4
3
1
2
3
4
10
39

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

-3
-3
-3
-4
-4
-3
-3
-3
-2
-2
-3
-3
-2
-3
-3
-3
-1
1
3
3
3
2
2
3

Relative Humidity (%)

68
70
71
71
73
74
68
61
58
52
47
47
44
40
37
38
41
49
62
69
75
76
78
86

Pressure (mb)

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

Ozone (du)

395
396
398
399
400
401
403
403
403
404
406
407
406
405
403
401
399
398
398
399
399
398
401
404

Monday 4

Waning Gibbous 94%

23:48

06:53

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
00 Bad

Sun - Rise: 05:45, Set: 20:13, Transit: 12:59. Moon - Rise: 23:48, Set: 06:53. Civil Dark: 20:46 - 05:11. Nautical Dark: 21:28 - 04:30. Astro Dark: 22:15 - 03:43

Total Clouds (% Sky Obscured)

95
97
98
100
99
100
100
100
100
100
98
97
95
86
90
100
100
100
100
100
100
100
94
88

Low Clouds (% Sky Obscured)

78
80
86
93
87
92
92
95
97
100
78
57
32
11
22
33
32
30
28
24
20
16
10
5

Medium Clouds (% Sky Obscured)

82
93
91
67
73
100
100
98
96
94
94
29
37
42
65
87
91
92
94
95
98
99
94
88

High Clouds (% Sky Obscured)

2
33
40
34
46
73
100
88
77
66
61
35
52
53
76
100
100
100
100
100
100
100
94
88

ISS Passover

Visibility (miles)

5
3
8
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
8
7
6
7

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

Precipitation Probability (%)

81
80
47
47
42
40
49
38
27
61
60
54
29
21
18
7
17
23
26
37
42
46
43
39

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

7
6
7
7
7
7
9
10
11
12
13
14
14
14
11
10
10
9
10
10
10
9
9
9

Chance of Frost

Temperature (°C)

6
6
6
6
6
6
6
7
8
9
10
10
10
11
13
14
15
14
14
13
12
12
11
11

Feels Like (°C)

2
3
3
3
2
2
3
2
3
5
5
5
5
6
8
9
10
9
9
8
9
8
8
8

Dew Point (°C)

4
5
5
5
4
4
5
5
5
6
7
8
9
9
11
12
13
13
12
12
12
11
11
11

Relative Humidity (%)

90
93
93
88
88
88
88
85
84
81
85
90
91
90
90
90
90
92
92
92
95
95
96
96

Pressure (mb)

1009
1008
1007
1007
1007
1007
1006
1006
1006
1006
1006
1005
1005
1005
1004
1003
1003
1003
1002
1002
1001
1001
1001
1000

Ozone (du)

404
403
403
406
410
410
410
412
414
418
420
418
418
419
419
419
419
417
415
412
412
411
411
409

Tuesday 5

Waning Gibbous 89%

00:37

07:40

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
00 Bad

Sun - Rise: 05:43, Set: 20:15, Transit: 12:59. Moon - Rise: 00:37, Set: 07:40. Civil Dark: 20:48 - 05:10. Nautical Dark: 21:30 - 04:28. Astro Dark: 22:17 - 03:40

Total Clouds (% Sky Obscured)

83
88
94
100
100
100
100
97
94
91
89
88
86
77
68
59
70
82
90
92
95
97
96
96

Low Clouds (% Sky Obscured)

5
21
42
64
57
51
44
54
65
75
60
46
40
41
34
25
19
10
0
0
0
1
21
42

Medium Clouds (% Sky Obscured)

83
88
94
100
100
100
100
78
54
31
24
25
23
26
19
10
10
6
3
31
61
89
85
82

High Clouds (% Sky Obscured)

55
41
44
56
69
82
96
76
56
37
27
15
3
35
68
59
70
74
73
67
84
85
90
90

ISS Passover

Visibility (miles)

8
8
8
8
8
8
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
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

32
75
95
95
95
93
69
56
40
16
16
15
12
10
8
1
2
1
0
0
0
0
15
21

Precipitation Amount (mm)

0
0.4
0.8
1
0.8
0.5
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
10
10
13
12
12
11
11
11
12
11
11
11
9
7
5
3
2
3
3

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

11
11
11
11
11
10
10
9
10
11
10
10
9
7
6
6
6
6
7
6
6
6
5
6

Relative Humidity (%)

96
96
96
96
96
93
91
88
88
89
87
76
67
58
56
54
53
57
64
70
72
74
76
81

Pressure (mb)

999
998
998
997
997
998
999
1000
1001
1002
1004
1004
1004
1004
1005
1005
1005
1006
1006
1007
1007
1008
1008
1008

Ozone (du)

408
407
408
410
411
413
416
418
421
424
427
424
421
417
414
411
408
406
404
402
401
399
397
397

Wednesday 6

Waning Gibbous 82%

No Rise

08:36

Sun - Rise: 05:42, Set: 20:16, Transit: 12:59. Moon - Rise: No Rise, Set: 08:36. Civil Dark: 20:49 - 05:08. Nautical Dark: 21:31 - 04:26. Astro Dark: 22:19 - 03:38

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: 30/04/26 01:30:58. Forecast: 30/04/26 to 06/05/26. Timezone: UTC-4.00