Clear Outside v1.0 - International Weather Forecasts For Astronomers

Friday 27

Waxing Gibbous 87%

13:05

05:19

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
10 Bad
11 Bad

Sun - Rise: 06:32, Set: 17:39, Transit: 12:06. Moon - Rise: 13:05, Set: 05:19. Civil Dark: 18:09 - 06:02. Nautical Dark: 18:43 - 05:28. Astro Dark: 19:17 - 04:54

Total Clouds (% Sky Obscured)

96
96
95
91
96
80
79
63
59
70
82
64
79
97
100
100
100
94
100
100
100
100
97
100

Low Clouds (% Sky Obscured)

75
74
72
76
92
73
71
49
43
37
58
64
70
5
1
6
1
10
99
100
100
100
83
89

Medium Clouds (% Sky Obscured)

45
39
49
25
13
23
2
0
0
60
51
8
63
88
84
79
100
93
100
83
79
46
18
56

High Clouds (% Sky Obscured)

0
0
0
0
0
2
2
0
4
0
0
21
8
37
98
100
100
70
54
30
35
43
76
100

ISS Passover

Visibility (miles)

1
0
1
0
0
0
3
9
9
9
9
9
9
9
9
9
9
9
9
9
9
7
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
Very Light Rain
Frozen rai
None
None
None
None

Precipitation Probability (%)

0
0
18
33
29
10
8
2
0
0
0
0
0
0
0
0
3
26
62
88
47
32
34
27

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.2
0.6
0
0
0
0

Wind Speed/Direction (mph)

5
5
6
6
6
7
6
4
6
6
7
8
10
11
13
14
15
17
16
15
15
15
14
14

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

87
91
91
91
94
96
96
96
96
94
94
91
89
89
89
89
87
86
88
89
93
100
100
100

Pressure (mb)

1018
1017
1017
1016
1016
1016
1016
1016
1016
1016
1015
1014
1013
1013
1012
1010
1009
1008
1007
1007
1007
1008
1008
1009

Ozone (du)

447
445
447
453
452
453
454
450
438
433
424
416
414
412
412
412
409
405
404
413
415
417
416
410

Saturday 28

Waxing Gibbous 94%

14:25

05:48

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
10 Bad
11 Bad

Sun - Rise: 06:30, Set: 17:40, Transit: 12:06. Moon - Rise: 14:25, Set: 05:48. Civil Dark: 18:10 - 06:01. Nautical Dark: 18:44 - 05:26. Astro Dark: 19:18 - 04:52

Total Clouds (% Sky Obscured)

100
100
100
100
71
56
48
58
87
100
100
100
100
100
100
100
100
100
100
100
95
93
90
88

Low Clouds (% Sky Obscured)

62
1
2
2
1
1
3
5
23
25
62
73
91
79
79
83
82
88
98
99
90
87
81
81

Medium Clouds (% Sky Obscured)

72
46
2
2
0
0
0
18
45
100
100
100
100
100
100
100
100
100
98
74
20
25
35
2

High Clouds (% Sky Obscured)

100
100
100
100
52
31
23
23
2
6
4
55
71
80
80
33
73
85
27
70
0
0
0
0

ISS Passover

Visibility (miles)

2
9
9
9
9
9
9
9
9
9
9
9
9
9
9
3
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
None
None
None
None
None
None
None
None
None
None
None
None
Snow
Snow
Snow
Snow
None
None
None

Precipitation Probability (%)

17
3
1
2
1
0
1
1
1
1
0
0
0
6
2
17
31
45
47
44
38
26
25
17

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

14
16
15
14
12
11
8
6
4
4
4
3
3
4
4
5
5
4
5
5
7
7
6
5

Chance of Frost

Temperature (°C)

5
4
3
3
2
1
1
-0
-2
-3
-4
-4
-5
-5
-6
-7
-7
-8
-9
-9
-10
-11
-11
-11

Feels Like (°C)

0
-3
-3
-3
-4
-4
-4
-4
-5
-6
-8
-8
-8
-9
-10
-10
-11
-12
-13
-14
-14
-15
-15
-14

Dew Point (°C)

5
1
0
-1
-2
-2
-2
-3
-3
-4
-5
-6
-6
-7
-7
-8
-8
-10
-10
-11
-12
-13
-13
-13

Relative Humidity (%)

100
79
79
79
77
78
81
84
89
91
87
89
90
89
89
87
90
90
88
88
86
85
85
81

Pressure (mb)

1011
1012
1014
1015
1016
1017
1019
1019
1020
1021
1021
1022
1022
1022
1022
1022
1023
1023
1023
1024
1025
1025
1026
1026

Ozone (du)

407
402
400
400
400
402
402
399
401
403
403
403
403
401
398
399
402
405
408
412
414
413
414
421

Sunday 1

Waxing Gibbous 98%

15:44

06:11

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

Sun - Rise: 06:28, Set: 17:42, Transit: 12:06. Moon - Rise: 15:44, Set: 06:11. Civil Dark: 18:11 - 05:59. Nautical Dark: 18:45 - 05:25. Astro Dark: 19:20 - 04:50

Total Clouds (% Sky Obscured)

87
90
95
99
91
81
66
49
0
1
1
1
1
1
1
2
1
2
3
3
3
4
5
29

Low Clouds (% Sky Obscured)

80
87
95
99
91
81
66
49
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
17

Medium Clouds (% Sky Obscured)

29
2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
2
4

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)

2
4
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 (%)

20
8
19
15
17
8
3
3
1
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)

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

Chance of Frost

Temperature (°C)

-10
-10
-9
-9
-9
-9
-9
-10
-12
-13
-14
-14
-15
-16
-17
-18
-18
-19
-19
-20
-18
-17
-16
-15

Feels Like (°C)

-15
-15
-15
-15
-15
-15
-14
-14
-15
-16
-17
-18
-18
-19
-19
-20
-21
-21
-22
-22
-21
-21
-20
-19

Dew Point (°C)

-14
-14
-14
-14
-14
-14
-14
-14
-15
-16
-17
-18
-19
-19
-20
-21
-22
-22
-23
-23
-21
-20
-19
-18

Relative Humidity (%)

75
69
68
71
69
69
69
72
73
74
74
75
74
75
75
73
74
73
74
76
75
76
75
76

Pressure (mb)

1026
1026
1026
1027
1027
1028
1029
1030
1032
1032
1033
1034
1035
1036
1036
1037
1037
1038
1039
1039
1040
1040
1040
1040

Ozone (du)

427
430
438
444
456
468
475
472
464
460
461
460
459
458
458
458
459
458
457
455
459
458
455
450

Monday 2

Waxing Gibbous 100%

17:00

06:30

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

Sun - Rise: 06:27, Set: 17:43, Transit: 12:06. Moon - Rise: 17:00, Set: 06:30. Civil Dark: 18:13 - 05:57. Nautical Dark: 18:47 - 05:23. Astro Dark: 19:21 - 04:48

Total Clouds (% Sky Obscured)

31
24
17
5
2
1
2
13
9
11
28
41
60
41
68
61
73
76
93
93
90
95
100
100

Low Clouds (% Sky Obscured)

25
24
17
5
2
1
2
6
9
8
11
12
11
12
8
8
48
11
7
3
2
2
4
3

Medium Clouds (% Sky Obscured)

6
4
2
0
0
1
2
13
9
6
11
18
26
14
34
61
40
6
27
22
49
73
79
85

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
1
2
2
2
1
3
5
26
31
53
72
93
93
90
95
100
100

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
0
5
3
1
0
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

-17
-17
-16
-15
-14
-14
-15
-15
-15
-16
-16
-17
-17
-17
-17
-17
-17
-17
-17
-17
-14
-13
-11
-9

Relative Humidity (%)

74
70
69
72
73
76
81
81
81
83
83
81
81
82
82
81
82
84
82
82
83
80
78
79

Pressure (mb)

1040
1040
1039
1039
1038
1038
1038
1038
1038
1038
1038
1037
1037
1037
1036
1036
1035
1035
1034
1034
1033
1033
1032
1031

Ozone (du)

445
441
437
433
430
429
425
420
413
409
408
408
405
402
401
398
394
391
388
384
383
380
379
375

Tuesday 3

Full Moon 99%

18:13

06:48

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 OK
10 OK
11 OK

Sun - Rise: 06:25, Set: 17:44, Transit: 12:05. Moon - Rise: 18:13, Set: 06:48. Civil Dark: 18:14 - 05:55. Nautical Dark: 18:48 - 05:21. Astro Dark: 19:23 - 04:47

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
100
99
98
93
79
75
75
71
66
42
38
36
31
27

Low Clouds (% Sky Obscured)

1
26
54
82
89
95
100
97
95
95
94
90
88
23
14
35
35
21
17
21
28
36
29
17

Medium Clouds (% Sky Obscured)

81
100
98
100
100
100
100
100
100
99
94
88
79
63
61
55
49
48
42
22
12
1
1
0

High Clouds (% Sky Obscured)

100
100
100
100
100
100
100
73
47
25
25
30
30
20
25
30
29
39
42
31
17
0
7
12

ISS Passover

Visibility (miles)

9
9
9
5
8
8
3
8
2
0
0
0
0
0
0
0
0
3
6
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
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
None
None
None
None
None

Precipitation Probability (%)

0
8
13
14
40
55
71
75
87
95
95
95
91
84
81
79
68
56
42
34
24
0
2
2

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

-8
-6
-5
-4
-4
-4
-4
-4
-3
-3
-3
-3
-3
-3
-4
-5
-5
-6
-6
-6
-4
-3
-1
0

Relative Humidity (%)

79
79
81
86
87
86
89
91
92
94
96
98
98
100
98
98
98
96
96
96
98
98
100
100

Pressure (mb)

1030
1028
1027
1026
1025
1024
1023
1022
1022
1021
1020
1020
1020
1020
1022
1021
1021
1022
1022
1023
1023
1024
1024
1024

Ozone (du)

373
371
369
369
366
367
367
366
366
366
364
364
366
368
367
367
367
371
376
381
381
382
383
378

Wednesday 4

Waning Gibbous 97%

19:24

07:05

12 OK
13 OK
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

Sun - Rise: 06:23, Set: 17:46, Transit: 12:05. Moon - Rise: 19:24, Set: 07:05. Civil Dark: 18:15 - 05:53. Nautical Dark: 18:49 - 05:19. Astro Dark: 19:24 - 04:45

Total Clouds (% Sky Obscured)

26
36
39
51
62
72
77
84
94
98
98
99
100
100
100
100
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

6
7
8
10
14
19
28
62
81
94
96
97
98
93
88
83
69
57
49
50
52
53
67
79

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
20
42
63
72
76
85
90
95
100
100
100
100
100
100

High Clouds (% Sky Obscured)

18
27
39
51
45
25
20
10
5
5
0
0
0
33
68
100
100
100
100
100
100
100
100
100

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 (%)

1
3
2
1
5
3
0
3
2
0
0
1
0
0
0
0
9
13
17
18
15
11
14
17

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
11
11
11
11
10
8
7
7
7
7
4
3
4
6
7
9
8
7
7
9
12
14
14

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

1
3
2
2
2
1
0
-0
-1
-1
-1
-1
-1
-1
-2
-2
-2
-3
-3
-3
-5
-6
-7
-7

Relative Humidity (%)

100
100
96
94
91
89
89
91
91
91
91
92
94
98
96
96
98
96
98
98
94
89
85
84

Pressure (mb)

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

Ozone (du)

373
369
368
368
367
367
368
368
369
369
369
368
367
365
364
364
363
364
366
368
365
361
358
357

Thursday 5

Waning Gibbous 92%

20:33

07:22

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

Sun - Rise: 06:21, Set: 17:47, Transit: 12:05. Moon - Rise: 20:33, Set: 07:22. Civil Dark: 18:17 - 05:52. Nautical Dark: 18:51 - 05:17. Astro Dark: 19:25 - 04:43

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
80
61
46
52
57
66
67
71
77

Low Clouds (% Sky Obscured)

90
86
79
65
54
34
37
33
34
49
49
53
46
52
57
66
67
67
67

Medium Clouds (% Sky Obscured)

100
100
100
100
99
98
97
71
45
19
16
13
9
10
10
14
7
4
1

High Clouds (% Sky Obscured)

100
88
74
58
71
85
95
90
83
81
70
45
15
20
25
29
37
46
54

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

Precipitation Probability (%)

20
74
95
95
95
95
95
95
95
87
62
44
36
32
25
8
12
10
0

Precipitation Amount (mm)

0
0.4
0.7
1
1.2
1.5
2.1
1.6
1.2
0.7
0.3
0.1
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

14
14
13
13
13
13
13
13
12
12
11
11
11
11
11
10
10
10
9

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-8
-9
-11
-11
-12
-11
-10
-10
-14
-14
-14
-15
-14
-15
-16
-16
-16
-16
-16

Dew Point (°C)

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

Relative Humidity (%)

82
82
79
79
77
77
77
77
77
77
77
77
78
78
80
80
81
81
81

Pressure (mb)

1029
1028
1027
1027
1026
1026
1026
1025
1025
1025
1025
1025
1025
1025
1025
1025
1025
1025
1026

Ozone (du)

357
356
357
359
360
362
365
367
368
368
369
371
373
375
373
371
369
368
367

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

Generated: 27/02/26 11:20:57. Forecast: 27/02/26 to 05/03/26. Timezone: UTC-5.00