Clear Outside v1.0 - International Weather Forecasts For Astronomers

Friday 20

Waxing Crescent 10%

07:46

21:32

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 OK
09 Good
10 Good
11 Good
12 OK
13 OK
14 Bad
15 Bad
16 Bad
17 Bad
18 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)

94
94
99
100
100
100
94
98
77
96
84
66
65
27
16
4
11
19
38
61
94
100
100
100

Low Clouds (% Sky Obscured)

83
83
99
100
97
98
85
73
77
91
83
65
61
27
16
1
9
1
1
10
6
4
1
2

Medium Clouds (% Sky Obscured)

34
38
67
94
98
100
86
94
53
70
67
31
23
1
0
0
0
11
29
43
34
89
100
99

High Clouds (% Sky Obscured)

0
0
0
27
35
40
45
0
0
0
0
0
0
0
0
0
1
15
3
29
86
100
100
100

ISS Passover

Visibility (miles)

0
4
9
3
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 (%)

3
1
5
2
4
4
5
7
4
2
2
2
1
0
0
0
0
1
1
1
3
1
2
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

96
92
91
87
87
87
84
82
82
82
81
81
82
79
71
67
63
60
57
54
53
55
59
67

Pressure (mb)

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

Ozone (du)

405
404
407
409
411
412
411
410
412
416
422
426
428
432
429
418
412
407
408
408
402
397
397
396

Saturday 21

Waxing Crescent 18%

08:14

22:54

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
13 Bad
14 Bad
15 Bad
16 Bad
17 Bad
18 OK

Sun - Rise: 06:51, Set: 19:08, Transit: 13:00. 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)

100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
97
91
76
23

Low Clouds (% Sky Obscured)

20
20
20
54
47
78
95
96
100
93
95
96
96
93
91
90
93
92
91
87
83
58
50
22

Medium Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
100
100
100
98
100
93
99
100
97
86
84
52
43
15

High Clouds (% Sky Obscured)

100
100
100
100
100
92
100
97
100
100
100
100
70
4
8
15
8
46
15
15
13
0
1
0

ISS Passover

Visibility (miles)

9
9
9
9
2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
6
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
Snow
Snow
None
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
None
None
None
None

Precipitation Probability (%)

0
0
3
22
39
50
44
62
95
95
95
95
92
95
87
84
66
57
59
47
24
8
4
2

Precipitation Amount (mm)

0
0
0
0
0.1
0.2
0
0.3
0.8
0.6
0.8
0.7
0.6
0.6
0.5
0.5
0.3
0.2
0.3
0.2
0
0
0
0

Wind Speed/Direction (mph)

3
4
3
4
4
3
3
4
5
6
7
9
10
10
10
11
12
12
12
12
12
13
12
12

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

71
74
75
77
86
96
98
98
98
98
96
96
96
96
94
96
98
98
96
96
89
81
80
78

Pressure (mb)

1015
1015
1015
1015
1015
1014
1013
1012
1011
1010
1009
1009
1008
1008
1008
1007
1007
1007
1007
1007
1008
1009
1010
1011

Ozone (du)

392
393
390
386
383
383
378
366
359
359
355
353
352
353
353
350
348
348
349
347
351
354
356
353

Sunday 22

Waxing Crescent 29%

08:51

00:17

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

17
38
95
97
99
100
100
96
79
77
86
18
21
28
28
38
45
49
50
48
45
47
44
56

Low Clouds (% Sky Obscured)

7
27
19
44
67
70
41
35
24
11
2
3
8
23
25
30
41
43
39
33
26
19
10
4

Medium Clouds (% Sky Obscured)

5
0
0
0
0
18
0
0
0
0
0
0
0
0
0
2
2
11
1
7
13
17
35
50

High Clouds (% Sky Obscured)

2
0
25
20
30
50
35
40
35
60
65
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 (%)

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

11
10
10
10
11
11
11
11
11
11
11
11
11
11
12
12
12
11
11
10
9
8
7
4

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

78
80
78
78
82
82
79
78
78
73
72
69
70
69
62
60
57
53
50
49
48
47
44
47

Pressure (mb)

1012
1013
1014
1014
1015
1015
1015
1015
1015
1015
1016
1016
1017
1018
1018
1019
1019
1019
1018
1019
1019
1019
1020
1020

Ozone (du)

353
353
358
361
362
356
352
355
357
360
364
369
373
378
383
386
389
394
398
400
400
403
406
409

Monday 23

Waxing Crescent 40%

09:40

01:36

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

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)

91
87
87
84
62
37
10
7
5
4
3
3
3
3
3
5
6
51
50
67
82
100
100
100

Low Clouds (% Sky Obscured)

13
12
35
54
56
25
7
6
4
4
3
3
3
3
3
5
4
51
37
25
6
9
5
2

Medium Clouds (% Sky Obscured)

76
77
70
65
51
32
3
2
2
3
0
0
0
0
0
0
2
47
50
64
79
100
100
100

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
14
10
5
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 (%)

3
1
6
4
5
2
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-1
-4
-4
-5
-5
-6
-6
-6
-6
-6
-6
-6
-6
-5
-4
-4
-4
-3
-5
-5
-4
-4
-3
-4

Dew Point (°C)

-9
-8
-6
-6
-6
-8
-8
-8
-8
-9
-9
-10
-11
-12
-12
-12
-11
-10
-10
-9
-9
-9
-7
-7

Relative Humidity (%)

52
59
67
70
72
64
65
68
69
69
66
62
60
55
50
48
46
50
46
47
46
47
52
57

Pressure (mb)

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

Ozone (du)

410
411
412
413
413
413
415
413
413
413
414
417
418
421
418
412
407
407
407
408
407
412
416
424

Tuesday 24

Waxing Crescent 37%

10:41

02:45

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

Sun - Rise: 06:45, Set: 19:12, Transit: 12:59. Moon - Rise: 10:41, Set: 02:45. Civil Dark: 19:42 - 06:16. Nautical Dark: 20:17 - 05:41. Astro Dark: 20:53 - 05:04

Total Clouds (% Sky Obscured)

100
99
98
98
99
100
100
99
99
99
99
99
98
96
97
100
100
100
100
100
100
85
80
75

Low Clouds (% Sky Obscured)

0
0
0
5
36
50
64
57
51
37
39
31
80
64
43
23
11
5
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

100
99
97
97
98
99
100
96
93
90
82
75
64
42
25
15
18
36
42
54
60
60
57
54

High Clouds (% Sky Obscured)

0
0
0
10
10
15
20
20
20
25
25
30
20
30
60
77
90
95
100
95
95
85
80
75

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
8
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
5
13
10
10
15
24
27
24
18
13
18
24
23
16
17
13
1
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)

9
10
10
10
10
10
9
9
9
9
9
9
8
8
9
10
11
11
11
11
10
10
9
9

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

-6
-7
-9
-7
-5
-5
-5
-6
-5
-5
-4
-4
-4
-5
-9
-13
-18
-18
-19
-19
-19
-19
-19
-19

Relative Humidity (%)

61
60
53
60
75
74
72
72
74
77
77
78
80
75
56
41
30
28
27
25
26
26
26
29

Pressure (mb)

1022
1022
1022
1022
1021
1020
1020
1019
1019
1019
1019
1020
1020
1021
1022
1023
1024
1024
1024
1024
1025
1025
1025
1025

Ozone (du)

428
438
444
447
449
454
460
464
467
468
466
464
464
458
453
448
444
441
438
436
435
434
434
430

Wednesday 25

First Quarter 52%

11:54

03:39

19 Bad
20 OK
21 OK
22 Bad
23 Bad
00 OK
01 OK
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

Sun - Rise: 06:43, Set: 19:14, Transit: 12:59. Moon - Rise: 11:54, Set: 03:39. Civil Dark: 19:43 - 06:14. Nautical Dark: 20:18 - 05:39. Astro Dark: 20:55 - 05:02

Total Clouds (% Sky Obscured)

55
48
46
53
49
45
41
50
65
84
89
94
99
99
99
100
100
100
100
100
100
100
100
99

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
1
2
28
56
83
80
77
73
82
91
100
93
87
80
80
81

Medium Clouds (% Sky Obscured)

55
48
46
53
49
45
41
50
65
69
78
86
94
85
74
63
67
72
77
85
92
100
100
96

High Clouds (% Sky Obscured)

55
48
24
0
22
45
41
50
65
84
76
77
85
92
96
100
100
100
100
88
93
80
69
67

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
7
5
3
3
3
2
5
7
9
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
None
None
None
None
None
None
Snow
Snow
Snow
Snow
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain

Precipitation Probability (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
35
51
65
74
85
95
95
95
95
95
95

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.2
0.3
0.4
0.5
0.8
0.9
1
0.9
0.9
1

Wind Speed/Direction (mph)

8
7
7
7
7
6
6
5
6
7
7
7
8
8
8
8
8
9
12
15
15
16
17
16

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

-18
-17
-18
-18
-18
-18
-18
-18
-18
-18
-18
-17
-16
-16
-12
-9
-5
-3
-2
-1
0
0
1
2

Relative Humidity (%)

32
35
36
36
36
36
36
36
37
38
39
40
41
42
53
66
82
84
86
86
86
83
82
86

Pressure (mb)

1026
1026
1026
1027
1027
1026
1026
1025
1024
1023
1022
1021
1019
1018
1016
1013
1011
1008
1005
1003
1000
998
996
995

Ozone (du)

427
424
421
417
414
410
405
401
403
404
406
398
390
382
375
369
362
355
348
341
337
332
328
326

Thursday 26

Waxing Gibbous 64%

13:12

04:21

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
13 Bad

Sun - Rise: 06:42, Set: 19:15, Transit: 12:59. Moon - Rise: 13:12, Set: 04:21. Civil Dark: 19:45 - 06:12. Nautical Dark: 20:20 - 05:37. Astro Dark: 20:56 - 05:00

Total Clouds (% Sky Obscured)

95
93
94
99
89
90
89
92
91
94
90
87
78
77
74
75
80
84
79

Low Clouds (% Sky Obscured)

81
72
63
53
56
59
66
68
69
70
63
61
55
57
52
45
42
44
37

Medium Clouds (% Sky Obscured)

95
77
62
56
42
21
0
0
0
0
9
17
23
15
8
0
0
0
0

High Clouds (% Sky Obscured)

65
53
45
40
17
8
0
0
0
0
0
0
0
0
0
0
0
0
0

ISS Passover

Visibility (miles)

4
2
4
7
9
7
5
3
5
7
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

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

Precipitation Probability (%)

95
95
95
87
55
29
5
16
14
9
7
5
0
1
1
0
0
0
0

Precipitation Amount (mm)

1.4
1.1
0.7
0.5
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

15
15
13
13
17
17
18
19
18
17
16
16
15
15
15
16
16
17
17

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-5
-5
-3
-2
-2
-1
-1
-1
-7
-8
-9
-10
-11
-12
-15
-15
-15
-15
-15

Dew Point (°C)

2
3
2
1
1
-1
-1
-2
-6
-10
-14
-16
-17
-18
-18
-18
-18
-19
-19

Relative Humidity (%)

89
91
86
80
75
77
80
83
72
61
52
49
47
45
43
40
39
36
33

Pressure (mb)

995
995
997
998
1000
1002
1005
1007
1010
1012
1015
1017
1019
1022
1023
1024
1025
1026
1026

Ozone (du)

323
321
325
329
332
343
353
363
364
365
365
369
373
377
378
380
381
383
385

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

Generated: 20/03/26 18:32:46. Forecast: 20/03/26 to 26/03/26. Timezone: UTC-4.00