Clear Outside v1.0 - International Weather Forecasts For Astronomers

Monday 23

Waxing Crescent 29%

09:40

01:36

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

97
99
98
55
28
30
53
65
38
14
17
19
38
20
7
8
26
7
2
3
28
86
100
100

Low Clouds (% Sky Obscured)

76
66
68
28
1
6
33
41
35
11
2
7
24
7
3
3
13
3
1
1
1
3
1
1

Medium Clouds (% Sky Obscured)

60
47
66
47
23
10
27
31
13
1
13
0
0
0
0
0
0
0
0
0
27
85
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
0
0
39
100
100

ISS Passover

Visibility (miles)

5
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 (%)

7
4
11
13
14
13
7
4
3
2
1
1
1
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

81
77
75
78
89
91
94
91
76
76
78
78
78
79
77
77
77
73
66
64
65
65
61
57

Pressure (mb)

1017
1017
1018
1018
1019
1020
1021
1021
1022
1022
1023
1024
1024
1025
1025
1026
1027
1028
1028
1029
1028
1027
1026
1026

Ozone (du)

390
398
404
410
413
413
413
412
413
414
416
414
408
404
401
407
407
408
411
418
419
418
420
424

Tuesday 24

Waxing Crescent 40%

10:41

02:45

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 OK
04 OK
05 Bad
06 Bad
07 Bad
08 Bad
09 Bad
10 Bad
11 Bad
12 Bad
13 Bad
14 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
100
100
100
100
100
92
79
72
46
63
66
30
35
96
100
99
95
94
95
100
100
100
100

Low Clouds (% Sky Obscured)

1
2
20
27
94
49
51
56
67
46
52
57
30
35
46
51
51
64
69
48
55
61
53
51

Medium Clouds (% Sky Obscured)

100
100
100
100
100
100
86
65
9
3
0
0
0
3
36
40
94
58
55
38
82
100
100
100

High Clouds (% Sky Obscured)

74
26
35
0
0
0
0
0
0
0
0
0
0
4
95
100
88
91
85
95
100
100
95
100

ISS Passover

Visibility (miles)

9
9
9
9
9
4
3
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
Snow
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

0
0
0
0
8
30
11
3
2
4
2
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Amount (mm)

0
0
0
0
0
0.1
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
14
11
11
13
13
14
14
12
11
11
10
9
7
6
5
5
5
5
5

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

59
60
62
62
61
70
86
77
74
80
86
78
64
63
58
55
49
42
40
38
36
34
33
33

Pressure (mb)

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

Ozone (du)

430
441
457
466
470
475
485
495
498
500
499
494
492
486
487
486
486
483
481
480
475
469
461
454

Wednesday 25

First Quarter 52%

11:54

03:39

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
13 Bad
14 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)

100
100
100
99
100
100
100
100
100
100
100
88
82
93
96
90
93
95
98
100
100
100
100
100

Low Clouds (% Sky Obscured)

62
34
75
35
10
38
47
88
82
84
82
85
68
87
89
81
70
62
54
46
53
54
58
72

Medium Clouds (% Sky Obscured)

100
100
97
99
100
100
100
100
100
100
100
72
82
85
75
47
73
82
91
100
100
100
95
100

High Clouds (% Sky Obscured)

98
100
100
53
100
100
100
100
100
30
1
20
40
16
21
0
0
57
77
100
78
100
100
100

ISS Passover

Visibility (miles)

9
9
9
9
9
9
2
1
0
0
0
0
0
0
0
0
0
0
0
0
1
0
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
None
None
Snow
Snow
Very Light Rain
Light Rain
Light Rain
Very Light Rain
Light Rain
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Frozen rai
Frozen rai
Frozen rai
None

Precipitation Probability (%)

0
0
1
6
8
25
48
55
64
72
80
65
76
85
77
87
93
89
71
76
75
61
59
44

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

-12
-12
-12
-12
-12
-11
-11
-6
-1
0
0
-0
0
0
-0
-1
-0
-1
1
1
2
2
2
3

Relative Humidity (%)

32
32
32
32
34
36
40
58
83
88
91
91
91
94
94
94
96
94
96
96
96
96
96
98

Pressure (mb)

1025
1024
1023
1022
1021
1021
1020
1019
1019
1017
1016
1015
1014
1013
1012
1012
1012
1011
1011
1011
1011
1010
1009
1009

Ozone (du)

448
438
431
425
427
430
431
430
428
428
429
424
417
415
423
420
417
410
408
403
397
388
382
382

Thursday 26

Waxing Gibbous 64%

13:12

04:21

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 OK
10 Good
11 OK
12 Bad
13 Bad
14 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)

100
100
100
100
100
100
100
100
100
99
99
97
95
90
90
75
46
48
22
9
35
45
54
51

Low Clouds (% Sky Obscured)

87
100
97
95
93
95
96
98
98
99
99
97
95
80
90
75
27
23
18
8
35
38
35
22

Medium Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
98
96
95
95
94
49
20
10
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

100
100
100
100
100
67
33
5
5
5
10
15
15
1
1
0
0
2
0
0
0
0
0
0

ISS Passover

Visibility (miles)

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

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

Precipitation Probability (%)

65
95
95
95
95
95
95
95
95
95
95
69
41
24
24
19
7
5
3
2
3
4
15
3

Precipitation Amount (mm)

0.3
1.3
1.3
1
2.5
2.4
2.6
1.1
0.9
0.9
1.2
0.3
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

3
2
4
4
4
6
5
4
7
6
6
7
7
7
9
11
12
11
12
12
11
11
10
12

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

96
98
98
98
100
98
98
98
98
98
98
98
100
98
94
86
82
84
82
78
75
73
72
67

Pressure (mb)

1008
1006
1005
1004
1002
1001
1001
1000
1000
1001
1002
1002
1004
1006
1007
1009
1012
1014
1016
1017
1018
1019
1019
1020

Ozone (du)

376
365
358
356
352
346
345
341
334
331
330
329
327
327
321
320
322
323
323
326
328
332
338
345

Friday 27

Waxing Gibbous 74%

14:29

04:52

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

Sun - Rise: 06:40, Set: 19:16, Transit: 12:59. Moon - Rise: 14:29, Set: 04:52. Civil Dark: 19:46 - 06:10. Nautical Dark: 20:21 - 05:35. Astro Dark: 20:58 - 04:58

Total Clouds (% Sky Obscured)

51
58
61
65
40
48
55
10
9
12
12
13
11
11
11
10
9
16
27
31
49
75
100
100

Low Clouds (% Sky Obscured)

12
10
13
24
16
23
29
7
7
6
5
0
0
2
2
1
1
2
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
2
2
3
4
4
3
2
2
9
17
24
45
67
87
83

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

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 (%)

1
14
4
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
7
11
12
15

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
13
13
13
12
11
11
10
10
9
8
8
7
6
5
4
3
2
2
3
3
3
4
4

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

68
69
70
70
73
74
75
75
75
77
76
75
77
78
78
77
77
75
71
65
63
64
67
67

Pressure (mb)

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

Ozone (du)

350
353
362
369
378
380
378
382
386
387
390
391
396
401
406
412
417
423
440
458
475
486
497
507

Saturday 28

Waxing Gibbous 83%

No Rise

05:16

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

Sun - Rise: 06:38, Set: 19:17, Transit: 12:58. Moon - Rise: No Rise, Set: 05:16. Civil Dark: 19:47 - 06:08. Nautical Dark: 20:23 - 05:33. Astro Dark: 20:59 - 04:56

Total Clouds (% Sky Obscured)

100
100
96
91
85
90
94
100
98
96
95
98
89
90
82
70
62
40
16
6
21
42
61
73

Low Clouds (% Sky Obscured)

0
0
13
27
42
67
85
100
80
50
5
0
0
0
0
4
14
10
5
1
9
18
30
28

Medium Clouds (% Sky Obscured)

74
58
54
45
31
48
74
100
72
41
12
9
8
4
4
4
4
4
3
4
3
2
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)

7
8
9
9
9
9
9
9
9
9
9
9
6
3
0
3
6
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
Snow
Snow
Snow
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

16
16
17
18
17
20
21
8
20
22
21
30
38
45
38
30
14
13
9
0
7
9
9
10

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0.1
0.2
0.1
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

69
68
68
75
82
90
90
90
90
92
92
90
92
94
94
90
87
83
80
74
72
68
66
63

Pressure (mb)

1027
1026
1026
1026
1026
1026
1026
1026
1026
1026
1027
1027
1027
1028
1028
1029
1030
1031
1031
1032
1032
1032
1032
1031

Ozone (du)

508
508
509
511
514
517
510
504
498
491
485
478
473
468
464
459
454
450
447
443
440
440
440
441

Sunday 29

Waxing Gibbous 91%

15:45

05:36

15 Bad
16 Bad
17 Bad
18 Bad
19 OK
20 OK
21 OK
22 OK
23 Bad
00 Bad
01 Bad
02 Bad
03 Bad
04 Bad
05 Bad
06 Bad
07 Bad

Sun - Rise: 06:36, Set: 19:19, Transit: 12:58. Moon - Rise: 15:45, Set: 05:36. Civil Dark: 19:49 - 06:06. Nautical Dark: 20:24 - 05:30. Astro Dark: 21:01 - 04:53

Total Clouds (% Sky Obscured)

86
100
79
59
40
34
33
31
54
78
100
100
100
100
99
98
97

Low Clouds (% Sky Obscured)

31
40
41
42
27
28
27
31
49
67
83
68
46
25
47
70
91

Medium Clouds (% Sky Obscured)

1
1
2
7
9
5
5
5
6
6
7
28
49
71
80
89
97

High Clouds (% Sky Obscured)

0
0
8
27
30
20
12
0
14
31
49
66
83
100
78
56
33

ISS Passover

Visibility (miles)

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

Precipitation Type

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

Precipitation Probability (%)

10
10
10
8
3
4
3
0
5
8
8
10
9
4
8
10
11

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-8
-8
-8
-7
-7
-6
-9
-8
-7
-8
-8
-8
-9
-9
-9
-9
-9

Dew Point (°C)

-9
-8
-8
-7
-7
-7
-7
-7
-7
-7
-7
-7
-7
-7
-7
-7
-6

Relative Humidity (%)

65
67
68
75
82
89
89
87
87
87
89
87
87
89
89
87
87

Pressure (mb)

1031
1030
1030
1030
1030
1029
1029
1029
1028
1028
1027
1027
1026
1025
1024
1023
1023

Ozone (du)

441
441
442
436
431
426
419
413
406
414
421
428
433
438
442
445
447

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

Generated: 23/03/26 14:50:43. Forecast: 23/03/26 to 29/03/26. Timezone: UTC-4.00