Clear Outside v1.0 - International Weather Forecasts For Astronomers

Tuesday 17

Waning Crescent 2%

06:45

17:39

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
01 OK
02 Good
03 Good
04 Good
05 Good
06 Good
07 Good
08 Good
09 Good

Sun - Rise: 06:59, Set: 19:03, Transit: 13:02. Moon - Rise: 06:45, Set: 17:39. Civil Dark: 19:33 - 06:29. Nautical Dark: 20:07 - 05:55. Astro Dark: 20:43 - 05:19

Total Clouds (% Sky Obscured)

56
61
46
92
95
90
79
78
79
80
51
72
70
44
21
18
1
0
0
1
1
2
1
3

Low Clouds (% Sky Obscured)

56
61
46
88
93
86
71
69
64
65
50
65
62
28
10
18
0
0
0
0
0
1
1
1

Medium Clouds (% Sky Obscured)

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

ISS Passover

Visibility (miles)

1
2
9
3
3
3
2
7
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 (%)

20
10
13
15
12
20
11
17
8
11
0
10
1
0
0
1
1
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)

30
28
28
20
20
19
18
18
17
15
13
12
11
11
10
10
10
9
9
8
8
7
6
6

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-14
-16
-15
-15
-15
-15
-15
-15
-15
-16
-15
-14
-15
-15
-15
-15
-15
-15
-15
-15
-15
-15
-14
-14

Dew Point (°C)

-10
-12
-13
-13
-12
-12
-13
-14
-14
-15
-15
-15
-16
-16
-16
-17
-17
-17
-18
-18
-19
-19
-19
-19

Relative Humidity (%)

77
68
63
62
66
67
67
62
61
61
61
61
60
57
60
60
59
60
59
57
56
55
53
51

Pressure (mb)

1000
1001
1003
1004
1006
1007
1009
1010
1012
1013
1015
1016
1018
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028

Ozone (du)

423
429
433
438
460
474
477
477
483
484
483
486
481
483
491
490
488
478
465
458
450
446
441
439

Wednesday 18

New Moon 0%

07:03

18:55

10 Good
11 Bad
12 Bad
13 Bad
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

Sun - Rise: 06:57, Set: 19:04, Transit: 13:02. Moon - Rise: 07:03, Set: 18:55. Civil Dark: 19:34 - 06:27. Nautical Dark: 20:09 - 05:53. Astro Dark: 20:44 - 05:17

Total Clouds (% Sky Obscured)

13
59
62
58
44
27
58
74
55
87
90
93
97
99
97
100
100
100
99
100
100
95
94
95

Low Clouds (% Sky Obscured)

12
52
53
38
20
8
2
3
3
25
16
6
32
55
30
30
71
85
76
85
81
85
88
87

Medium Clouds (% Sky Obscured)

0
0
2
8
2
6
43
61
40
78
86
92
94
98
97
100
100
100
98
98
98
86
81
83

High Clouds (% Sky Obscured)

1
3
7
2
2
4
13
8
2
27
32
2
1
3
41
63
100
91
88
85
85
4
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 (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
2
4
3
3
3
8
9

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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-13
-13
-13
-12
-10
-9
-7
-7
-7
-7
-8
-8
-8
-8
-8
-8
-8
-8
-8
-8
-8
-8
-8
-8

Dew Point (°C)

-18
-18
-17
-16
-15
-14
-14
-14
-13
-12
-10
-10
-10
-10
-10
-10
-9
-9
-9
-9
-10
-10
-10
-10

Relative Humidity (%)

50
49
49
47
48
47
47
46
47
52
58
60
59
60
61
61
64
64
65
63
60
59
57
55

Pressure (mb)

1029
1030
1030
1030
1029
1028
1028
1027
1028
1028
1028
1028
1028
1027
1026
1026
1025
1024
1023
1023
1022
1022
1021
1021

Ozone (du)

438
437
436
431
423
415
410
406
403
401
397
393
393
394
396
397
395
394
398
400
402
405
406
404

Thursday 19

Waxing Crescent 1%

07:23

20:12

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
06 Bad
07 Bad
08 Bad
09 Bad

Sun - Rise: 06:55, Set: 19:06, Transit: 13:01. Moon - Rise: 07:23, Set: 20:12. Civil Dark: 19:35 - 06:25. Nautical Dark: 20:10 - 05:51. Astro Dark: 20:45 - 05:15

Total Clouds (% Sky Obscured)

96
95
95
92
94
96
100
100
90
95
100
78
52
51
25
41
100
98
98
93
83
71
73
77

Low Clouds (% Sky Obscured)

83
85
86
89
92
94
99
100
82
62
58
73
39
37
5
9
15
5
4
5
1
1
5
9

Medium Clouds (% Sky Obscured)

81
85
74
49
50
41
56
58
55
84
100
25
30
40
2
9
45
49
50
55
76
71
73
77

High Clouds (% Sky Obscured)

0
0
0
4
4
1
5
19
7
65
60
19
0
0
0
0
0
0
0
0
0
0
0
0

ISS Passover

Visibility (miles)

9
9
9
9
9
7
0
0
0
0
0
0
0
0
0
0
0
0
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
Snow
Snow
Very Light Rain
Very Light Rain
Snow
Snow
Snow
Snow
Snow
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

7
10
15
22
31
46
52
53
61
64
78
72
64
43
31
10
5
5
2
1
0
0
0
0

Precipitation Amount (mm)

0
0
0
0
0
0.2
0.2
0.2
0.3
0.4
0.7
0.6
0.4
0.1
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

11
12
11
11
10
9
8
6
6
6
6
6
6
7
8
7
7
8
8
6
5
4
4
5

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

55
55
52
51
58
72
88
96
98
98
100
100
100
98
100
98
98
98
96
94
92
91
84
73

Pressure (mb)

1021
1020
1019
1019
1018
1017
1017
1016
1016
1016
1016
1016
1016
1016
1016
1017
1017
1017
1017
1018
1018
1018
1019
1019

Ozone (du)

405
407
408
409
408
407
408
409
407
405
407
409
410
410
411
413
415
418
418
418
419
413
411
410

Friday 20

Waxing Crescent 4%

07:46

21:32

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
06 Bad
07 Bad
08 Bad
09 Bad

Sun - Rise: 06:53, Set: 19:07, Transit: 13:01. Moon - Rise: 07:46, Set: 21:32. Civil Dark: 19:37 - 06:23. Nautical Dark: 20:11 - 05:49. Astro Dark: 20:47 - 05:13

Total Clouds (% Sky Obscured)

75
70
71
74
93
93
93
87
81
75
64
53
52
56
57
59
58
58
58
59
53
51
59
71

Low Clouds (% Sky Obscured)

13
17
22
27
24
19
15
50
80
75
64
53
52
56
57
59
58
58
58
59
53
51
33
28

Medium Clouds (% Sky Obscured)

71
66
59
61
90
90
92
74
57
45
45
50
52
56
57
59
58
58
58
59
53
50
40
50

High Clouds (% Sky Obscured)

0
0
2
1
14
6
5
5
5
5
0
0
5
5
5
10
1
20
3
5
10
16
43
71

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
4
1
0
0
2
0
1
0
0
7
1
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
Snow
None
None
None
None
None
None
None

Precipitation Probability (%)

0
1
1
0
0
0
0
0
1
6
10
36
36
34
28
38
38
30
30
24
18
3
0
0

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.1
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-4
-4
-4
-4
-4
-5
-5
-4
-5
-4
-4
-4
-5
-4
-5
-5
-5
-6
-6
-6
-6
-6
-6
-5

Dew Point (°C)

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

Relative Humidity (%)

67
58
55
51
49
47
47
49
52
55
60
63
86
92
94
92
96
96
96
98
96
96
92
84

Pressure (mb)

1019
1019
1019
1018
1018
1017
1017
1016
1017
1017
1017
1018
1018
1018
1018
1018
1018
1018
1018
1018
1019
1019
1019
1019

Ozone (du)

407
408
406
406
405
403
403
402
402
400
398
400
400
403
404
404
404
406
407
408
410
414
419
420

Saturday 21

Waxing Crescent 10%

08:14

22:54

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
06 Bad
07 Bad
08 Bad
09 Bad

Sun - Rise: 06:51, Set: 19:08, Transit: 13:01. Moon - Rise: 08:14, Set: 22:54. Civil Dark: 19:38 - 06:22. Nautical Dark: 20:13 - 05:47. Astro Dark: 20:49 - 05:11

Total Clouds (% Sky Obscured)

77
90
97
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

15
28
27
15
37
67
100
100
98
100
93
93
98
100
100
100
26
48
79
86
91
100
100
100

Medium Clouds (% Sky Obscured)

75
80
80
80
80
75
71
100
100
99
98
100
100
98
96
93
100
100
100
94
89
85
91
93

High Clouds (% Sky Obscured)

77
90
97
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
74
53
33
31
27

ISS Passover

Visibility (miles)

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

None
None
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
Light Rain
Light Rain
Light Rain
Snow
Snow
Snow
Snow

Precipitation Probability (%)

0
2
1
2
0
1
2
45
73
95
95
95
95
95
95
95
60
79
93
95
95
95
95
95

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0.3
0.4
0.6
0.9
1
0.8
0.6
0.3
0.3
0.5
0.7
0.7
0.9
1.1
1
0.9

Wind Speed/Direction (mph)

4
4
5
5
6
6
6
7
8
9
11
10
7
5
5
5
6
7
8
8
7
7
7
6

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

77
68
64
60
58
57
58
62
65
69
72
74
77
82
83
85
86
87
92
94
94
96
96
98

Pressure (mb)

1019
1019
1018
1017
1016
1014
1013
1011
1009
1008
1006
1005
1004
1004
1003
1003
1002
1010
1009
1008
1007
1006
1006
1005

Ozone (du)

420
413
408
400
394
388
387
388
385
385
382
376
377
379
380
377
372
369
365
362
360
358
356
352

Sunday 22

Waxing Crescent 18%

08:51

00:17

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
06 Bad
07 Bad
08 Bad
09 Bad

Sun - Rise: 06:49, Set: 19:10, Transit: 13:00. Moon - Rise: 08:51, Set: 00:17. Civil Dark: 19:39 - 06:20. Nautical Dark: 20:14 - 05:45. Astro Dark: 20:50 - 05:09

Total Clouds (% Sky Obscured)

100
99
99
98
98
97
97
96
96
96
96
97
97
94
92
92
97
91
92
94
93
95
69
48

Low Clouds (% Sky Obscured)

100
96
92
88
87
87
86
83
80
78
84
86
85
81
70
55
43
34
25
38
54
72
60
48

Medium Clouds (% Sky Obscured)

96
95
94
93
88
85
84
79
78
83
90
90
90
83
78
71
77
79
85
84
84
78
52
27

High Clouds (% Sky Obscured)

21
25
24
28
34
44
55
40
19
13
4
1
0
1
2
4
2
1
0
0
0
0
0
0

ISS Passover

Visibility (miles)

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

Precipitation Probability (%)

95
95
95
95
95
95
95
95
95
95
95
95
95
95
95
82
79
71
61
55
45
34
29
18

Precipitation Amount (mm)

1.1
0.9
0.9
1.1
1.4
1.9
2.4
2.8
3.1
3.5
1.7
1.2
0.7
0.9
0.7
0.5
0.4
0.3
0.3
0.2
0.1
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

1
1
1
1
1
1
1
1
0
0
-0
-0
-1
-1
-1
-2
-2
-4
-5
-6
-7
-9
-10
-11

Relative Humidity (%)

98
98
98
98
98
98
100
100
98
98
98
100
98
100
98
96
94
92
92
90
84
77
71
69

Pressure (mb)

1005
1005
1004
1004
1003
1003
1003
1003
1004
1004
1005
1005
1006
1006
1007
1008
1009
1011
1012
1013
1014
1016
1017
1018

Ozone (du)

347
343
342
341
339
335
331
326
327
327
328
327
327
326
333
339
346
351
357
363
369
376
382
384

Monday 23

Waxing Crescent 29%

09:40

01:36

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

Sun - Rise: 06:47, Set: 19:11, Transit: 13:00. Moon - Rise: 09:40, Set: 01:36. Civil Dark: 19:41 - 06:18. Nautical Dark: 20:15 - 05:43. Astro Dark: 20:52 - 05:06

Total Clouds (% Sky Obscured)

31
28
25
25
50
75
100
70
42
13
11
11
10
7
5
1
2
2
2
3
5
6

Low Clouds (% Sky Obscured)

31
28
24
17
45
72
100
70
42
13
11
11
10
7
5
1
1
1
1
1
1
2

Medium Clouds (% Sky Obscured)

10
10
8
6
6
5
5
5
9
8
3
1
0
0
0
0
0
0
0
1
2
3

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
2

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

Fog (%)

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

Precipitation Probability (%)

1
2
1
0
7
13
5
19
24
28
25
20
11
11
7
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

Wind Speed/Direction (mph)

9
10
10
11
11
11
11
11
11
10
9
9
9
9
8
7
6
6
6
7
7
8

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

66
62
60
59
57
60
63
66
67
67
68
69
69
70
69
69
67
71
77
80
82
80

Pressure (mb)

1019
1021
1021
1021
1022
1022
1023
1023
1024
1026
1027
1028
1029
1030
1031
1031
1032
1033
1033
1034
1034
1035

Ozone (du)

386
388
391
394
397
401
404
408
410
413
415
414
412
411
410
408
407
406
406
405
406
406

Forecast for Le Vieux-Port, Montréal, Canada (45.50,-73.57)

Generated: 17/03/26 10:01:30. Forecast: 17/03/26 to 23/03/26. Timezone: UTC-4.00