Clear Outside v1.0 - International Weather Forecasts For Astronomers

Saturday 4

Waning Gibbous 90%

22:43

07:04

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
01 Bad
02 Bad
03 Bad
04 Bad
05 Bad

Sun - Rise: 06:24, Set: 19:25, Transit: 12:55. Moon - Rise: 22:43, Set: 07:04. Civil Dark: 19:56 - 05:52. Nautical Dark: 20:32 - 05:15. Astro Dark: 21:11 - 04:36

Total Clouds (% Sky Obscured)

96
84
88
75
77
93
94
97
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

72
81
81
41
59
37
40
45
40
18
40
74
84
81
100
100
100
100
92
89
89
93
94
96

Medium Clouds (% Sky Obscured)

0
0
0
0
2
44
81
90
100
100
100
100
100
100
100
64
100
100
100
100
100
100
100
100

High Clouds (% Sky Obscured)

5
7
4
8
73
83
71
82
100
100
100
100
36
100
100
100
100
100
100
67
100
100
100
100

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
8
3
3
9
9
6
4
5
1
3
1
3

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

Precipitation Probability (%)

0
0
0
0
0
0
3
0
0
0
6
60
95
95
95
53
80
95
95
95
95
95
95
95

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0.2
1
2.1
0.8
0
0.2
1.2
0.8
0.8
2.9
4.9
3.7
3.8

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

78
80
73
69
60
52
51
54
54
52
51
57
69
82
86
77
71
71
86
80
76
86
90
86

Pressure (mb)

1027
1028
1029
1030
1030
1030
1029
1029
1028
1026
1025
1024
1023
1022
1020
1019
1017
1015
1014
1012
1010
1007
1006
1006

Ozone (du)

360
364
362
360
364
363
360
357
357
355
350
348
345
339
338
339
340
340
338
338
337
338
337
335

Sunday 5

Waning Gibbous 84%

23:50

07:29

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
01 Bad
02 Bad
03 Bad
04 Bad
05 OK

Sun - Rise: 06:22, Set: 19:27, Transit: 12:54. Moon - Rise: 23:50, Set: 07:29. Civil Dark: 19:57 - 05:50. Nautical Dark: 20:34 - 05:13. Astro Dark: 21:12 - 04:34

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
96
68
92
95
93
87
62
94
98
97
93
92
68
57
34

Low Clouds (% Sky Obscured)

90
96
96
100
79
56
77
81
66
81
45
64
43
65
60
42
85
71
65
78
80
62
37
34

Medium Clouds (% Sky Obscured)

100
100
100
100
100
100
67
92
41
50
45
45
57
61
56
26
85
76
77
89
88
68
56
5

High Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
85
7
0
0
0
0
0
0
0
0
0
0
0
0
0

ISS Passover

Visibility (miles)

3
3
3
4
8
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

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
87
51
27
9
22
23
27
13
24
25
30
13
4
12
17
11
22
10
5
3
1

Precipitation Amount (mm)

2.3
1.4
1.3
0.5
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

11
16
17
19
17
15
16
14
15
16
16
16
16
12
13
13
13
13
14
13
12
12
11
12

Chance of Frost

Temperature (°C)

6
7
7
7
8
8
9
9
9
8
8
8
8
7
6
5
4
3
3
2
2
2
1
0

Feels Like (°C)

-1
-1
1
0
1
3
4
4
4
3
2
2
2
1
1
-1
-2
-3
-4
-4
-3
-4
-3
-4

Dew Point (°C)

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

Relative Humidity (%)

90
87
90
90
90
82
72
77
78
77
68
59
67
74
72
71
73
76
79
88
85
78
77
74

Pressure (mb)

1005
1004
1004
1003
1003
1003
1003
1003
1003
1003
1002
1002
1002
1003
1003
1004
1004
1004
1004
1005
1006
1006
1007
1008

Ozone (du)

335
337
339
341
343
344
345
346
350
355
357
359
356
353
352
353
356
361
367
371
369
367
371
375

Monday 6

Waning Gibbous 76%

00:53

08:01

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
01 Bad
02 Bad
03 Bad
04 Bad
05 Bad

Sun - Rise: 06:20, Set: 19:28, Transit: 12:54. Moon - Rise: 00:53, Set: 08:01. Civil Dark: 19:58 - 05:48. Nautical Dark: 20:35 - 05:11. Astro Dark: 21:14 - 04:32

Total Clouds (% Sky Obscured)

75
46
57
87
76
74
86
100
100
100
100
56
63
90
86
100
100
94
92
91
99
98
98
97

Low Clouds (% Sky Obscured)

68
46
45
70
48
50
73
100
100
100
87
45
25
25
25
30
35
29
77
71
87
87
87
88

Medium Clouds (% Sky Obscured)

2
1
7
50
56
52
53
99
82
100
100
56
63
88
86
94
98
83
86
91
93
81
86
80

High Clouds (% Sky Obscured)

0
0
4
4
1
1
4
3
44
33
4
3
4
0
0
0
0
0
0
0
0
0
0
0

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
5
2
2
2
2
8
2
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
3
1
1
0
2
4
26
32
27
33
26
23
21
25
17
1
0
0
0
11
16
18
22

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

78
77
63
56
53
49
44
49
57
57
60
60
57
61
63
66
70
73
78
70
66
66
63
62

Pressure (mb)

1009
1010
1011
1012
1012
1012
1012
1012
1012
1012
1012
1013
1013
1014
1014
1015
1015
1015
1015
1016
1016
1017
1017
1018

Ozone (du)

383
392
401
405
407
407
405
406
407
410
412
415
417
418
419
419
422
424
425
427
425
429
433
435

Tuesday 7

Waning Gibbous 67%

01:48

08:42

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 OK
22 OK
23 OK
00 Good
01 Good
02 Good
03 Good
04 Good
05 Good

Sun - Rise: 06:18, Set: 19:29, Transit: 12:54. Moon - Rise: 01:48, Set: 08:42. Civil Dark: 20:00 - 05:46. Nautical Dark: 20:37 - 05:09. Astro Dark: 21:16 - 04:29

Total Clouds (% Sky Obscured)

97
95
96
97
98
96
94
90
88
86
83
82
82
86
73
41
37
27
12
0
0
0
2
0

Low Clouds (% Sky Obscured)

89
90
92
95
98
94
91
87
87
86
83
82
82
86
73
24
18
14
4
0
0
0
2
0

Medium Clouds (% Sky Obscured)

76
43
44
86
62
90
89
35
23
11
0
0
0
0
0
2
2
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
0
0
0
0
0
0

ISS Passover

Visibility (miles)

9
4
9
1
1
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 (%)

21
23
25
27
24
18
13
10
8
6
0
1
1
1
1
1
0
0
0
0
0
2
3
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

-10
-8
-10
-9
-9
-12
-15
-17
-17
-17
-17
-17
-17
-15
-13
-13
-13
-13
-13
-13
-14
-13
-13
-13

Relative Humidity (%)

63
73
69
73
72
56
41
33
30
28
27
26
29
36
43
48
48
49
52
51
51
52
53
54

Pressure (mb)

1019
1019
1020
1021
1022
1023
1023
1023
1024
1024
1024
1024
1025
1026
1027
1029
1030
1031
1031
1032
1032
1033
1033
1034

Ozone (du)

441
441
442
441
438
441
447
454
456
458
464
466
459
451
450
448
451
454
453
440
434
432
422
414

Wednesday 8

Waning Gibbous 65%

02:35

09:32

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

Sun - Rise: 06:17, Set: 19:31, Transit: 12:54. Moon - Rise: 02:35, Set: 09:32. Civil Dark: 20:01 - 05:44. Nautical Dark: 20:38 - 05:07. Astro Dark: 21:18 - 04:27

Total Clouds (% Sky Obscured)

0
2
1
6
10
31
48
59
33
66
66
26
33
69
58
51
44
47
50
50
57
66
73
82

Low Clouds (% Sky Obscured)

0
0
1
3
4
19
34
44
21
12
7
4
7
43
30
22
6
6
5
5
4
3
2
2

Medium Clouds (% Sky Obscured)

0
1
0
1
1
1
1
5
2
40
45
4
13
9
21
35
44
47
46
38
45
52
58
56

High Clouds (% Sky Obscured)

0
0
0
1
2
3
2
2
2
11
3
5
3
3
13
22
33
28
19
12
13
14
21
51

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)

7
7
8
8
9
10
11
12
13
13
13
13
10
8
6
8
9
10
11
12
14
14
15
16

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

55
56
51
50
44
39
38
37
36
36
36
36
41
49
53
53
52
53
53
53
53
54
54
54

Pressure (mb)

1034
1035
1035
1036
1036
1035
1035
1034
1034
1033
1032
1032
1031
1030
1030
1029
1028
1027
1026
1025
1024
1024
1023
1023

Ozone (du)

415
410
408
407
406
400
395
393
394
392
390
390
392
392
391
389
387
385
385
386
386
385
384
383

Thursday 9

Waning Gibbous 57%

03:12

10:31

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
01 Bad
02 Bad
03 Bad
04 OK
05 OK

Sun - Rise: 06:15, Set: 19:32, Transit: 12:53. Moon - Rise: 03:12, Set: 10:31. Civil Dark: 20:03 - 05:42. Nautical Dark: 20:40 - 05:05. Astro Dark: 21:19 - 04:25

Total Clouds (% Sky Obscured)

91
100
92
85
79
89
95
100
100
100
100
100
100
100
99
98
97
97
99
100
70
40
10
8

Low Clouds (% Sky Obscured)

3
3
19
34
42
53
65
82
85
89
92
94
96
96
95
94
92
93
94
95
70
40
10
8

Medium Clouds (% Sky Obscured)

52
47
54
59
63
75
88
100
100
100
100
100
100
100
98
97
95
84
73
62
41
21
0
0

High Clouds (% Sky Obscured)

75
100
82
64
46
65
81
92
87
82
78
84
89
85
65
40
26
21
22
27
21
12
0
0

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
8
7
6
7
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
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
None
None
None

Precipitation Probability (%)

0
0
1
3
4
31
44
54
78
95
95
95
95
95
95
94
70
60
48
26
30
25
12
11

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0.4
0.7
1
1.1
1.2
1.2
0.8
0.5
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

16
17
18
19
19
20
17
14
12
10
10
10
8
8
7
6
6
7
6
5
4
4
5
7

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

56
57
59
60
62
63
65
68
69
74
80
85
87
90
91
90
88
87
82
76
72
70
70
68

Pressure (mb)

1022
1022
1021
1021
1020
1020
1020
1020
1019
1020
1020
1020
1020
1020
1021
1021
1021
1022
1023
1023
1024
1026
1027
1028

Ozone (du)

382
381
380
380
380
380
377
375
372
371
369
368
368
368
368
369
371
372
382
391
401
403
406
408

Friday 10

Third Quarter 48%

03:42

11:37

06 Good
07 Good
08 Good
09 Good
10 OK
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

Sun - Rise: 06:13, Set: 19:33, Transit: 12:53. Moon - Rise: 03:42, Set: 11:37. Civil Dark: 20:04 - 05:40. Nautical Dark: 20:41 - 05:03. Astro Dark: 21:21 - 04:22

Total Clouds (% Sky Obscured)

6
3
3
12
17
29
37
48
52
60
67
74
79
89
90
90
91
93
96
99

Low Clouds (% Sky Obscured)

6
3
3
12
17
29
37
48
52
60
67
66
64
59
62
65
64
66
68
70

Medium Clouds (% Sky Obscured)

0
0
0
4
15
29
37
25
30
35
39
48
54
63
68
71
71
75
82
90

High Clouds (% Sky Obscured)

2
2
3
12
16
29
36
47
46
45
34
39
61
87
90
90
91
90
88
95

ISS Passover

Visibility (miles)

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

Precipitation Type

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

Precipitation Probability (%)

8
1
2
3
3
38
54
68
76
82
85
76
68
60
63
67
69
74
78
80

Precipitation Amount (mm)

0
0
0
0
0
0
0.2
0.4
0.5
0.6
0.7
0.5
0.4
0.3
0.3
0.3
0.4
0.5
0.5
0.6

Wind Speed/Direction (mph)

6
6
6
6
5
6
5
6
6
5
6
6
6
6
6
5
5
5
5
6

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

-8
-9
-11
-12
-14
-15
-15
-15
-15
-14
-14
-13
-12
-11
-10
-9
-9
-8
-8
-8

Relative Humidity (%)

61
56
50
43
38
32
30
28
27
28
28
29
34
39
46
48
52
55
56
56

Pressure (mb)

1029
1030
1031
1032
1032
1033
1033
1032
1032
1032
1032
1032
1032
1032
1033
1033
1032
1032
1032
1031

Ozone (du)

406
403
400
398
396
393
388
383
378
376
374
372
369
366
362
360
358
356
354
352

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

Generated: 04/04/26 06:17:56. Forecast: 04/04/26 to 10/04/26. Timezone: UTC-4.00