Clear Outside v1.0 - International Weather Forecasts For Astronomers

Friday 27

Waxing Gibbous 74%

13:08

04:56

13 Good
14 OK
15 OK
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
10 Bad
11 Bad
12 Bad

Sun - Rise: 06:40, Set: 19:18, Transit: 12:59. Moon - Rise: 13:08, Set: 04:56. Civil Dark: 19:48 - 06:10. Nautical Dark: 20:24 - 05:33. Astro Dark: 21:02 - 04:56

Total Clouds (% Sky Obscured)

5
24
29
76
100
92
100
100
97
100
100
97
94
95
100
100
100
97
100
75
88
91
90
100

Low Clouds (% Sky Obscured)

5
20
20
20
25
30
30
25
30
30
25
28
24
21
22
10
6
11
14
62
86
90
89
100

Medium Clouds (% Sky Obscured)

2
3
2
36
100
60
100
100
97
100
100
97
88
75
94
100
100
65
95
50
69
48
76
78

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
5
8
8
5
3
1
3
5
3
6
6
7
8
9
9
9
9
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
None
None
None
None
None
None
Snow
Snow

Precipitation Probability (%)

0
0
0
0
4
14
0
0
0
13
2
1
1
1
0
0
0
0
0
1
3
23
38
48

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
0.1
0.2

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

-12
-11
-11
-11
-11
-12
-13
-14
-14
-15
-15
-15
-16
-17
-17
-18
-18
-19
-19
-18
-16
-14
-12
-11

Feels Like (°C)

-17
-16
-17
-16
-16
-17
-18
-18
-19
-19
-19
-19
-21
-20
-20
-21
-22
-22
-21
-21
-20
-18
-17
-16

Dew Point (°C)

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

Relative Humidity (%)

64
65
65
65
66
73
78
83
82
84
84
84
84
87
85
82
84
83
81
79
71
70
78
80

Pressure (mb)

1025
1024
1024
1023
1024
1024
1025
1026
1027
1027
1027
1027
1027
1028
1028
1028
1029
1029
1030
1029
1029
1029
1029
1028

Ozone (du)

388
384
379
373
373
376
376
378
384
395
404
407
412
428
442
463
491
504
509
511
503
492
489
487

Saturday 28

Waxing Gibbous 83%

14:27

05:19

13 Bad
14 Bad
15 Bad
16 Bad
17 Bad
18 Bad
19 Bad
20 Bad
21 Bad
22 Bad
23 OK
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

Sun - Rise: 06:38, Set: 19:19, Transit: 12:59. Moon - Rise: 14:27, Set: 05:19. Civil Dark: 19:49 - 06:08. Nautical Dark: 20:26 - 05:31. Astro Dark: 21:03 - 04:54

Total Clouds (% Sky Obscured)

100
97
85
86
80
77
70
71
60
65
24
45
85
93
86
82
93
94
97
98
97
97
96
97

Low Clouds (% Sky Obscured)

100
97
85
86
80
77
70
65
57
63
18
45
85
93
83
79
83
80
84
88
89
83
88
95

Medium Clouds (% Sky Obscured)

10
2
0
0
0
0
3
2
2
2
4
2
2
2
0
18
61
83
86
77
53
53
55
56

High Clouds (% Sky Obscured)

0
0
0
0
0
3
3
3
3
3
3
4
3
0
0
0
0
0
0
0
0
0
0
0

ISS Passover

Visibility (miles)

1
0
1
1
2
9
9
9
6
6
3
3
3
3
1
3
1
1
1
1
1
1
4
0

Fog (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
0
0

Precipitation Type

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

Precipitation Probability (%)

50
56
41
31
23
15
1
2
3
0
0
0
6
20
21
21
15
21
26
30
26
25
32
48

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

10
10
12
12
12
10
9
5
3
4
3
3
3
3
4
6
5
5
5
6
8
9
10
10

Chance of Frost

Temperature (°C)

-10
-9
-9
-9
-9
-9
-10
-11
-12
-13
-13
-13
-13
-14
-13
-13
-12
-12
-12
-12
-10
-8
-6
-4

Feels Like (°C)

-15
-15
-15
-15
-15
-15
-15
-16
-15
-15
-16
-17
-17
-18
-17
-17
-17
-17
-16
-16
-15
-13
-11
-9

Dew Point (°C)

-13
-12
-13
-12
-13
-13
-13
-13
-14
-14
-15
-15
-15
-15
-14
-14
-13
-13
-13
-13
-11
-10
-8
-6

Relative Humidity (%)

77
78
75
77
74
77
78
85
86
86
86
86
86
86
88
90
90
90
92
90
87
83
82
87

Pressure (mb)

1027
1026
1026
1026
1026
1027
1028
1029
1030
1030
1030
1030
1030
1029
1029
1028
1028
1028
1028
1027
1027
1026
1025
1024

Ozone (du)

482
485
489
490
484
479
479
477
476
474
470
468
463
455
445
440
432
433
434
442
441
443
447
449

Sunday 29

Waxing Gibbous 91%

15:44

05:38

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
10 Bad
11 Bad
12 Bad

Sun - Rise: 06:36, Set: 19:20, Transit: 12:59. Moon - Rise: 15:44, Set: 05:38. Civil Dark: 19:51 - 06:06. Nautical Dark: 20:27 - 05:29. Astro Dark: 21:05 - 04:51

Total Clouds (% Sky Obscured)

98
96
98
98
90
80
77
100
97
100
100
100
100
100
100
100
100
100
99
100
100
100
99
97

Low Clouds (% Sky Obscured)

97
91
94
94
82
67
47
15
18
10
28
23
25
20
30
35
18
32
50
49
63
65
62
54

Medium Clouds (% Sky Obscured)

57
52
42
15
0
0
8
75
76
90
100
100
100
100
100
100
100
96
94
94
94
94
95
95

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
3
57
89
90
45
5
2
45
0
69
33
60
62
97
84
66

ISS Passover

Visibility (miles)

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

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

Precipitation Probability (%)

65
67
55
45
34
17
6
4
2
2
0
9
3
4
1
2
2
3
23
56
85
91
84
71

Precipitation Amount (mm)

0.4
0.4
0.2
0.1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.3
0.7
0.7
0.5
0.4

Wind Speed/Direction (mph)

10
11
11
11
10
8
7
8
7
6
6
3
2
2
2
2
2
2
1
3
2
2
2
2

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

87
91
94
94
96
96
96
91
91
92
91
94
98
100
98
98
100
100
98
98
100
100
100
100

Pressure (mb)

1023
1022
1021
1021
1021
1021
1021
1021
1021
1021
1020
1020
1020
1019
1019
1018
1018
1017
1017
1016
1016
1015
1015
1014

Ozone (du)

450
448
446
445
441
438
436
432
431
430
426
424
427
425
424
421
422
420
420
418
411
410
405
402

Monday 30

Waxing Gibbous 96%

16:57

05:55

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
10 Bad
11 Bad
12 Bad

Sun - Rise: 06:34, Set: 19:22, Transit: 12:59. Moon - Rise: 16:57, Set: 05:55. Civil Dark: 19:52 - 06:04. Nautical Dark: 20:29 - 05:27. Astro Dark: 21:07 - 04:49

Total Clouds (% Sky Obscured)

95
97
99
100
100
100
100
100
100
100
96
94
90
94
98
99
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

55
55
60
75
75
75
85
71
76
80
14
40
80
86
93
98
99
100
100
100
100
100
100
100

Medium Clouds (% Sky Obscured)

95
79
74
76
72
100
58
97
99
100
95
91
85
89
94
98
71
95
100
98
97
48
87
84

High Clouds (% Sky Obscured)

25
52
77
100
100
100
100
100
100
100
74
48
22
16
20
13
37
49
62
73
85
100
100
100

ISS Passover

Visibility (miles)

0
0
0
0
0
8
9
9
9
9
9
9
9
9
9
9
9
7
2
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
None
None
Snow
Snow
Snow
Snow
Frozen rai
Snow

Precipitation Probability (%)

50
23
7
3
3
3
2
0
0
0
1
1
4
7
16
16
35
56
95
95
95
78
60
64

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.9
1.9
1
0.4
0.2
0.4

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

100
100
100
100
100
96
94
96
96
92
94
98
98
98
96
98
96
98
96
96
98
96
94
94

Pressure (mb)

1014
1013
1013
1013
1014
1014
1015
1015
1016
1016
1016
1016
1016
1016
1016
1016
1015
1015
1014
1014
1013
1013
1012
1012

Ozone (du)

400
398
398
397
397
397
397
393
392
391
392
393
394
392
387
384
381
379
373
371
369
367
366
367

Tuesday 31

Waxing Gibbous 99%

18:09

06:11

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
10 Bad
11 Bad
12 Bad

Sun - Rise: 06:32, Set: 19:23, Transit: 12:58. Moon - Rise: 18:09, Set: 06:11. Civil Dark: 19:54 - 06:02. Nautical Dark: 20:30 - 05:25. Astro Dark: 21:08 - 04:47

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
98
98
99
99
100
100
100
100

Low Clouds (% Sky Obscured)

100
100
100
100
100
100
100
97
94
93
95
95
97
25
20
25
9
17
26
25
25
24
16
8

Medium Clouds (% Sky Obscured)

52
57
64
67
74
73
75
100
55
100
100
100
100
70
65
70
74
82
90
90
94
99
79
59

High Clouds (% Sky Obscured)

79
100
96
76
40
100
71
100
100
100
100
100
100
65
77
84
81
87
94
90
93
97
97
92

ISS Passover

Visibility (miles)

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

None
None
None
None
None
Frozen rai
None
Sleet
Frozen rai
Frozen rai
Frozen rai
Frozen rai
Frozen rai
Frozen rai
Frozen rai
Light Rain
Light Rain
Light Rain
None
None
None
Very Light Rain
Very Light Rain
Very Light Rain

Precipitation Probability (%)

47
35
28
11
42
65
64
70
71
89
95
95
95
95
95
95
95
87
61
61
63
67
67
60

Precipitation Amount (mm)

0
0
0
0
0
0.4
0
0.3
0.3
0.6
0.8
4.1
0.8
0.5
0.7
1
0.7
0.4
0
0
0
0.3
0.3
0.3

Wind Speed/Direction (mph)

6
6
6
8
8
8
8
8
8
7
7
8
8
9
5
7
8
8
8
8
9
10
12
11

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

96
94
96
96
96
96
98
98
98
98
98
98
98
98
98
100
100
100
100
100
100
98
98
98

Pressure (mb)

1011
1010
1010
1010
1010
1010
1010
1011
1010
1010
1011
1009
1009
1008
1014
1014
1013
1013
1013
1013
1013
1013
1013
1014

Ozone (du)

364
361
360
361
359
357
356
356
354
353
349
347
344
342
342
343
344
344
343
343
341
339
338
340

Wednesday 1

Full Moon 100%

19:19

06:27

13 Bad
14 Bad
15 Bad
16 OK
17 OK
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 OK
10 OK
11 OK
12 Good

Sun - Rise: 06:30, Set: 19:24, Transit: 12:58. Moon - Rise: 19:19, Set: 06:27. Civil Dark: 19:55 - 06:00. Nautical Dark: 20:32 - 05:23. Astro Dark: 21:10 - 04:44

Total Clouds (% Sky Obscured)

100
68
37
5
10
45
55
65
70
74
93
100
100
100
100
100
92
84
76
61
45
29
21
13

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
29
73
74
75
70
65
60
37
17
15
3
11
7
11
12

Medium Clouds (% Sky Obscured)

39
27
15
5
10
23
31
29
18
0
0
0
0
0
1
1
5
15
50
56
45
29
21
13

High Clouds (% Sky Obscured)

78
50
37
5
10
45
55
65
59
47
41
36
50
55
80
80
85
84
76
61
45
24
21
13

ISS Passover

Visibility (miles)

0
1
4
6
9
7
4
1
2
3
3
4
4
4
5
7
8
8
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
26
16
0
6
11
14
13
14
14
14
11
3
8
8
0
1
1
0
1
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
9
10
10
10
9
9
8
9
9
10
9
9
8
8
8
8
8
8
8
8
8
9
9

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

3
5
-4
-4
-4
-4
-4
-5
-10
-11
-11
-11
-11
-11
-15
-16
-15
-15
-15
-16
-15
-14
-14
-14

Dew Point (°C)

3
1
0
-1
-2
-3
-4
-5
-7
-8
-9
-10
-10
-11
-12
-13
-13
-13
-13
-14
-13
-12
-12
-12

Relative Humidity (%)

98
96
93
91
87
87
87
89
87
85
84
85
85
83
83
83
83
83
81
78
74
70
65
61

Pressure (mb)

1015
1017
1018
1018
1019
1020
1022
1023
1024
1025
1026
1028
1029
1030
1031
1032
1033
1034
1034
1035
1035
1035
1036
1035

Ozone (du)

342
345
349
353
357
361
365
369
375
381
387
384
381
377
376
375
373
376
379
382
385
388
391
395

Thursday 2

Waning Gibbous 99%

20:28

06:44

13 Good
14 Good
15 Good
16 Good
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

Sun - Rise: 06:28, Set: 19:26, Transit: 12:58. Moon - Rise: 20:28, Set: 06:44. Civil Dark: 19:56 - 05:58. Nautical Dark: 20:33 - 05:21. Astro Dark: 21:12 - 04:42

Total Clouds (% Sky Obscured)

6
6
6
6
23
40
59
45
31
21
22
33
38
46
70
83
77
67
72

Low Clouds (% Sky Obscured)

6
6
6
6
23
40
59
45
31
21
22
33
38
46
70
83
77
67
72

Medium Clouds (% Sky Obscured)

6
6
5
0
0
5
5
10
15
15
15
15
15
15
15
15
15
20
20

High Clouds (% Sky Obscured)

5
5
0
5
6
11
26
45
31
21
22
33
38
46
54
31
39
43
51

ISS Passover

Visibility (miles)

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

Precipitation Type

None
None
None
None
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Frozen rai
Frozen rai
Frozen rai
Frozen rai
Frozen rai
Frozen rai
Frozen rai

Precipitation Probability (%)

0
0
0
0
50
76
95
95
95
95
95
95
95
95
95
95
95
95
95

Precipitation Amount (mm)

0
0
0
0
0.2
0.4
0.7
1.2
1.6
2.1
1.9
1.9
1.8
1.5
1.3
1.6
1.3
1.1
0.9

Wind Speed/Direction (mph)

9
9
9
9
9
9
8
7
8
8
9
10
10
10
10
10
9
9
9

Chance of Frost

Temperature (°C)

-4
-3
-3
-3
-3
-4
-6
-7
-8
-8
-8
-8
-9
-9
-9
-9
-9
-8
-8

Feels Like (°C)

-13
-12
-6
-6
-6
-6
-6
-5
-11
-11
-10
-10
-10
-9
-11
-11
-11
-11
-10

Dew Point (°C)

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

Relative Humidity (%)

58
55
55
56
56
64
73
83
85
85
87
87
87
88
87
85
83
80
79

Pressure (mb)

1035
1035
1034
1034
1034
1034
1035
1035
1035
1035
1035
1034
1033
1033
1032
1031
1031
1030
1030

Ozone (du)

398
402
400
398
395
395
395
395
394
394
393
391
389
387
385
383
381
380
380

Forecast for Lac-Saint-Louis, Lanaudière, Canada (46.57,-73.80)

Generated: 27/03/26 13:02:53. Forecast: 27/03/26 to 02/04/26. Timezone: UTC-4.00