Clear Outside v1.0 - International Weather Forecasts For Astronomers

Saturday 21

Waxing Crescent 18%

08:14

22:54

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
19 Bad

Sun - Rise: 06:51, Set: 19:10, Transit: 13:00. Moon - Rise: 08:14, Set: 22:54. Civil Dark: 19:39 - 06:22. Nautical Dark: 20:13 - 05:47. Astro Dark: 20:49 - 05:11

Total Clouds (% Sky Obscured)

85
88
91
100
98
100
100
100
100
100
100
100
100
99
99
98
100
100
98
100
94
92
91
94

Low Clouds (% Sky Obscured)

0
5
5
31
42
35
49
82
97
97
95
100
93
95
90
92
89
92
86
86
80
83
85
85

Medium Clouds (% Sky Obscured)

85
88
91
100
96
91
100
100
100
100
100
100
100
96
95
91
100
100
93
64
34
24
23
18

High Clouds (% Sky Obscured)

85
88
91
29
19
100
100
100
100
100
97
100
100
19
18
0
2
0
0
66
32
0
16
34

ISS Passover

Visibility (miles)

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

Fog (%)

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

Precipitation Type

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

Precipitation Probability (%)

0
0
3
0
0
3
5
13
64
95
95
95
95
95
95
95
95
95
95
71
48
26
11
12

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0.3
0.8
0.8
0.8
1.1
1.5
1
1
1.1
0.9
0.8
0.4
0.2
0
0
0

Wind Speed/Direction (mph)

6
5
5
4
5
7
7
8
8
9
11
11
11
12
13
12
12
12
13
14
15
16
15
15

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

59
61
63
67
70
67
66
64
63
78
91
92
94
96
96
96
100
100
100
98
96
91
89
87

Pressure (mb)

1016
1016
1016
1016
1016
1016
1015
1014
1013
1013
1012
1011
1011
1010
1009
1009
1008
1008
1007
1008
1008
1009
1010
1012

Ozone (du)

390
388
385
384
384
375
365
363
360
361
359
357
357
353
346
345
346
347
349
355
353
351
350
349

Sunday 22

Waxing Crescent 29%

08:51

00:17

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
19 Bad

Sun - Rise: 06:49, Set: 19:11, Transit: 13:00. Moon - Rise: 08:51, Set: 00:17. Civil Dark: 19:41 - 06:20. Nautical Dark: 20:14 - 05:45. Astro Dark: 20:50 - 05:09

Total Clouds (% Sky Obscured)

100
99
100
92
100
77
78
71
64
65
61
75
78
85
98
97
99
98
95
97
95
51
88
96

Low Clouds (% Sky Obscured)

83
81
61
53
39
28
23
40
46
49
49
57
70
81
95
86
95
89
88
89
86
51
84
84

Medium Clouds (% Sky Obscured)

3
6
70
39
60
50
37
17
0
0
0
0
0
0
14
41
61
68
62
67
64
51
55
55

High Clouds (% Sky Obscured)

100
94
88
51
98
3
23
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

ISS Passover

Visibility (miles)

2
2
8
9
9
9
9
9
6
8
9
8
3
9
9
9
9
9
9
9
9
9
8
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
None
None
None
None
None
None
None
None
None
None
None
None
Snow

Precipitation Probability (%)

8
12
2
1
1
1
0
1
1
3
2
9
2
5
4
16
9
14
12
17
22
34
33
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
0.1

Wind Speed/Direction (mph)

14
14
13
12
12
12
12
11
11
12
12
11
11
12
12
12
11
10
9
8
7
5
5
5

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-9
-10
-10
-9
-10
-11
-11
-11
-11
-12
-12
-12
-12
-10
-9
-8
-7
-6
-6
-5
-5
-4
-3
-5

Dew Point (°C)

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

Relative Humidity (%)

89
91
87
87
87
87
87
87
89
89
87
85
85
85
82
79
78
77
77
72
66
68
75
89

Pressure (mb)

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

Ozone (du)

348
355
353
351
350
350
352
353
349
350
351
355
359
365
373
379
382
388
393
399
400
404
410
414

Monday 23

Waxing Crescent 40%

09:40

01:36

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

Sun - Rise: 06:47, Set: 19:12, Transit: 13:00. Moon - Rise: 09:40, Set: 01:36. Civil Dark: 19:42 - 06:18. Nautical Dark: 20:15 - 05:43. Astro Dark: 20:52 - 05:06

Total Clouds (% Sky Obscured)

92
86
76
60
28
12
9
13
11
36
45
38
34
59
46
32
82
95
78
100
100
100
100
100

Low Clouds (% Sky Obscured)

78
37
15
19
12
7
6
1
1
12
30
38
34
59
46
1
1
8
1
1
1
12
19
51

Medium Clouds (% Sky Obscured)

67
58
55
33
11
1
1
9
5
22
24
0
0
0
0
19
75
85
78
100
100
100
100
100

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
6
25
25
20
20

ISS Passover

Visibility (miles)

0
7
7
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 (%)

36
32
22
7
7
4
3
2
2
0
0
0
0
0
0
0
0
1
2
2
2
1
0
2

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
3
6
7
6
4
4
4
4
3
3
4
4
6
7
8
10
11
11
10
10
9
9

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

96
96
91
81
79
81
84
82
81
82
82
82
76
70
69
71
72
72
67
62
62
66
70
74

Pressure (mb)

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

Ozone (du)

417
420
419
418
417
416
415
411
413
415
415
416
414
412
414
416
414
420
425
430
438
440
456
465

Tuesday 24

Waxing Crescent 52%

10:41

02:45

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

Sun - Rise: 06:45, Set: 19:14, Transit: 12:59. Moon - Rise: 10:41, Set: 02:45. Civil Dark: 19:43 - 06:16. Nautical Dark: 20:17 - 05:41. Astro Dark: 20:53 - 05:04

Total Clouds (% Sky Obscured)

94
87
81
86
84
91
80
83
83
76
69
64
62
59
56
57
47
43
62
79
100
100
100
100

Low Clouds (% Sky Obscured)

58
71
81
79
32
31
32
76
83
29
11
3
7
26
56
22
6
8
20
32
9
31
17
9

Medium Clouds (% Sky Obscured)

93
87
81
49
54
55
37
24
65
70
69
64
62
59
56
57
47
43
57
75
100
100
100
100

High Clouds (% Sky Obscured)

15
0
0
0
0
0
0
0
1
2
5
10
16
22
22
23
18
14
40
68
100
100
100
100

ISS Passover

Visibility (miles)

9
9
1
7
9
9
9
9
2
8
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
Snow
Snow
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

15
49
45
19
14
8
10
8
23
6
6
2
2
2
0
0
0
0
0
0
0
0
0
1

Precipitation Amount (mm)

0
0.2
0.2
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
9
9
10
11
11
12
12
12
11
11
10
10
9
8
8
6
6
5
4
4
4
4
4

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

-4
-5
-4
-4
-4
-5
-4
-4
-3
-6
-9
-13
-16
-16
-17
-18
-18
-18
-17
-17
-17
-17
-17
-16

Relative Humidity (%)

75
74
84
84
80
75
78
81
86
74
63
52
46
43
40
38
36
35
34
34
33
33
34
37

Pressure (mb)

1022
1022
1021
1021
1020
1020
1020
1021
1021
1022
1023
1025
1026
1027
1027
1028
1027
1027
1026
1026
1025
1025
1025
1025

Ozone (du)

471
477
482
490
493
498
497
493
492
492
492
491
487
483
480
477
465
457
447
439
433
431
430
430

Wednesday 25

First Quarter 48%

11:54

03:39

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
19 Bad

Sun - Rise: 06:43, Set: 19:15, Transit: 12:59. Moon - Rise: 11:54, Set: 03:39. Civil Dark: 19:45 - 06:14. Nautical Dark: 20:18 - 05:39. Astro Dark: 20:55 - 05:02

Total Clouds (% Sky Obscured)

100
100
100
99
99
98
99
100
100
100
100
100
100
100
100
100
100
100
100
100
99
98
97
93

Low Clouds (% Sky Obscured)

5
0
5
20
41
53
64
75
88
93
93
94
95
95
96
97
98
100
98
97
95
87
61
26

Medium Clouds (% Sky Obscured)

100
100
100
98
96
95
97
99
100
100
100
100
98
98
97
96
90
87
89
92
95
93
90
89

High Clouds (% Sky Obscured)

100
100
99
60
28
13
20
20
25
1
0
0
4
16
30
53
74
94
91
93
90
85
85
85

ISS Passover

Visibility (miles)

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

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
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow

Precipitation Probability (%)

3
7
8
38
48
56
69
71
78
79
85
87
95
95
95
95
95
95
93
71
50
55
60
67

Precipitation Amount (mm)

0
0
0
0
0.1
0.3
0.5
0.5
0.6
0.5
0.7
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.6
0.3
0.1
0.2
0.3
0.4

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

-15
-16
-15
-14
-10
-7
-6
-6
-6
-5
-5
-6
-6
-5
-5
-5
-5
-4
-4
-4
-4
-4
-3
-3

Relative Humidity (%)

38
38
40
43
62
85
87
90
92
94
94
94
94
94
94
94
92
92
92
91
91
92
94
94

Pressure (mb)

1025
1024
1023
1022
1022
1021
1019
1018
1016
1015
1014
1012
1011
1010
1009
1008
1007
1006
1005
1005
1005
1005
1006
1006

Ozone (du)

428
425
421
417
416
416
412
410
413
413
415
411
410
403
396
388
382
376
370
369
368
367
361
355

Thursday 26

Waxing Gibbous 64%

13:12

04:21

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

Sun - Rise: 06:42, Set: 19:16, Transit: 12:59. Moon - Rise: 13:12, Set: 04:21. Civil Dark: 19:46 - 06:12. Nautical Dark: 20:20 - 05:37. Astro Dark: 20:56 - 05:00

Total Clouds (% Sky Obscured)

85
76
71
66
59
52
44
40
39
34
31
26
47
68
87
91
96
100
99
99
100
97
95
94

Low Clouds (% Sky Obscured)

33
41
48
40
31
26
27
30
30
20
10
0
0
0
0
0
0
0
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

74
58
44
47
55
52
44
40
34
24
17
7
13
14
16
12
7
2
1
1
0
0
5
5

High Clouds (% Sky Obscured)

85
76
71
66
57
39
44
40
39
34
20
10
10
12
9
5
5
20
49
46
22
13
6
0

ISS Passover

Visibility (miles)

0
0
0
0
3
6
9
9
9
9
9
9
9
9
9
9
7
5
2
5
7
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

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

Precipitation Probability (%)

77
85
92
90
82
63
48
32
6
18
13
1
3
3
2
9
11
12
15
16
14
12
7
2

Precipitation Amount (mm)

0.5
0.6
0.7
0.7
0.5
0.3
0.1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

8
8
8
8
8
8
8
7
6
6
6
6
6
7
7
7
6
6
6
6
6
7
6
5

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

98
98
98
100
100
98
98
96
94
90
90
89
85
84
80
76
78
76
75
75
73
71
75
77

Pressure (mb)

1007
1008
1009
1010
1011
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1021
1021
1020
1021
1021
1021
1022
1022

Ozone (du)

348
347
346
344
342
339
337
333
329
325
323
321
320
320
320
321
321
321
321
323
326
328
339
351

Friday 27

Waxing Gibbous 74%

14:29

04:52

20 Bad
21 Bad
22 Bad
23 OK
00 Good
01 Good
02 OK
03 OK
04 OK
05 Bad
06 Bad
07 Bad
08 Bad
09 Bad
10 Bad
11 Bad
12 Bad
13 Bad

Sun - Rise: 06:40, Set: 19:17, Transit: 12:59. Moon - Rise: 14:29, Set: 04:52. Civil Dark: 19:47 - 06:10. Nautical Dark: 20:21 - 05:35. Astro Dark: 20:58 - 04:58

Total Clouds (% Sky Obscured)

79
88
84
42
15
14
13
20
19
48
73
97
91
82
75
90
98
100

Low Clouds (% Sky Obscured)

24
47
71
42
15
14
13
20
19
37
17
3
15
24
31
53
76
96

Medium Clouds (% Sky Obscured)

14
23
23
10
10
11
13
20
19
48
73
89
76
63
60
80
85
95

High Clouds (% Sky Obscured)

0
0
0
1
1
2
2
2
2
23
43
64
72
80
75
67
47
26

ISS Passover

Visibility (miles)

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

Precipitation Type

None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

5
3
0
1
2
0
15
13
5
12
10
2
3
2
0
1
2
2

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-6
-12
-11
-11
-11
-12
-12
-15
-15
-15
-15
-16
-17
-16
-15
-15
-15
-14

Dew Point (°C)

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

Relative Humidity (%)

80
79
80
80
83
83
84
84
86
86
84
84
83
80
78
74
74
73

Pressure (mb)

1023
1023
1024
1024
1024
1025
1025
1025
1025
1026
1026
1027
1027
1028
1028
1028
1028
1028

Ozone (du)

363
371
378
386
389
391
393
395
397
398
405
411
417
424
431
437
448
459

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

Generated: 21/03/26 20:07:53. Forecast: 21/03/26 to 27/03/26. Timezone: UTC-4.00