Clear Outside v1.0 - International Weather Forecasts For Astronomers

Sunday 1

Full Moon 100%

16:47

07:47

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

Sun - Rise: 07:12, Set: 17:01, Transit: 12:07. Moon - Rise: 16:47, Set: 07:47. Civil Dark: 17:33 - 06:41. Nautical Dark: 18:08 - 06:06. Astro Dark: 18:43 - 05:31

Total Clouds (% Sky Obscured)

49
38
30
25
20
13
5
3
3
3
3
5
6
5
2
1
3
2
1
1
2
2
2
4

Low Clouds (% Sky Obscured)

0
28
0
4
3
2
1
0
0
0
0
1
1
1
1
1
1
1
1
0
1
1
1
2

Medium 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

High Clouds (% Sky Obscured)

0
0
2
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
7
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
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
7
5
3
3
3
4
4
4
4
4
4
4
4
4
5
5
5
6
6
6
6
6

Chance of Frost

Temperature (°C)

-13
-12
-12
-12
-11
-11
-11
-13
-13
-13
-14
-14
-15
-15
-14
-13
-13
-13
-14
-14
-15
-15
-15
-14

Feels Like (°C)

-15
-14
-14
-15
-14
-13
-13
-15
-15
-16
-16
-16
-17
-17
-17
-16
-16
-16
-16
-17
-17
-17
-17
-16

Dew Point (°C)

-16
-16
-15
-16
-14
-14
-13
-15
-15
-16
-16
-16
-17
-17
-17
-16
-16
-16
-16
-17
-17
-17
-17
-16

Relative Humidity (%)

76
75
76
75
76
78
86
84
84
83
84
84
82
82
81
83
81
83
81
82
82
82
82
83

Pressure (mb)

1019
1018
1017
1016
1016
1015
1015
1015
1015
1015
1014
1014
1014
1014
1014
1015
1015
1015
1015
1016
1016
1016
1017
1017

Ozone (du)

452
448
446
450
449
449
446
443
440
439
439
439
437
440
443
442
436
430
426
418
416
421
428
429

Monday 2

Waning Gibbous 98%

18:07

08:08

10 Good
11 Good
12 Good
13 Good
14 Good
15 Good
16 Good
17 Good
18 Good
19 OK
20 OK
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: 07:11, Set: 17:03, Transit: 12:08. Moon - Rise: 18:07, Set: 08:08. Civil Dark: 17:34 - 06:40. Nautical Dark: 18:10 - 06:04. Astro Dark: 18:44 - 05:30

Total Clouds (% Sky Obscured)

2
2
2
3
3
3
4
4
7
10
35
39
51
52
73
92
100
100
100
98
84
82
96
99

Low Clouds (% Sky Obscured)

1
1
1
1
1
1
1
1
3
2
2
2
3
1
2
1
15
20
20
21
35
39
45
45

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
45
91
100
95
59
56
86
97

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
2
20
21
48
50
73
92
100
100
99
9
0
0
0
0

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
3
3
2
2
2
1
1
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
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
0
0
0
3
0
13
8

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)

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

Chance of Frost

Temperature (°C)

-13
-11
-10
-9
-8
-8
-8
-8
-8
-8
-9
-9
-9
-9
-9
-9
-9
-9
-9
-9
-9
-9
-9
-9

Feels Like (°C)

-16
-14
-13
-12
-12
-11
-11
-11
-11
-11
-11
-13
-13
-13
-13
-13
-14
-14
-13
-13
-13
-13
-13
-12

Dew Point (°C)

-15
-14
-13
-12
-11
-10
-10
-10
-10
-10
-10
-10
-10
-10
-10
-11
-11
-11
-11
-11
-11
-11
-11
-10

Relative Humidity (%)

81
81
81
80
78
82
85
85
85
87
87
87
88
87
88
87
87
88
88
88
87
87
87
90

Pressure (mb)

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

Ozone (du)

429
431
432
429
426
425
423
426
435
423
414
411
410
409
410
408
390
393
391
386
390
391
390
391

Tuesday 3

Waning Gibbous 93%

19:22

08:27

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: 07:10, Set: 17:04, Transit: 12:08. Moon - Rise: 19:22, Set: 08:27. Civil Dark: 17:36 - 06:39. Nautical Dark: 18:11 - 06:03. Astro Dark: 18:45 - 05:29

Total Clouds (% Sky Obscured)

98
98
95
95
92
86
83
84
70
93
98
97
100
100
89
80
73
96
90
85
70
70
73
85

Low Clouds (% Sky Obscured)

73
74
74
81
71
55
69
79
56
42
83
93
100
100
65
68
67
37
39
34
15
29
45
65

Medium Clouds (% Sky Obscured)

92
52
44
37
35
42
33
3
3
61
59
30
40
27
32
33
38
46
46
61
70
66
63
48

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)

1
0
0
1
2
9
9
9
9
9
1
0
4
7
7
5
9
3
7
9
9
9
9
5

Fog (%)

0
2
2
2
2
2
2
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 (%)

17
18
7
19
6
7
6
8
8
11
30
33
30
28
15
6
5
6
7
13
11
13
14
8

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

88
90
90
89
87
87
91
91
90
90
94
94
96
94
92
92
92
89
90
87
83
83
85
83

Pressure (mb)

1019
1019
1019
1019
1018
1018
1018
1018
1018
1018
1018
1018
1018
1018
1018
1018
1018
1018
1018
1018
1018
1019
1019
1019

Ozone (du)

388
386
391
396
396
403
389
387
391
390
389
391
388
396
395
397
399
404
415
418
427
435
438
438

Wednesday 4

Waning Gibbous 87%

20:34

08:44

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: 07:08, Set: 17:06, Transit: 12:08. Moon - Rise: 20:34, Set: 08:44. Civil Dark: 17:37 - 06:37. Nautical Dark: 18:12 - 06:02. Astro Dark: 18:47 - 05:28

Total Clouds (% Sky Obscured)

88
90
90
89
88
84
76
73
71
57
47
53
60
64
65
72
79
85
85
82
80
80
77
78

Low Clouds (% Sky Obscured)

69
72
74
73
74
68
52
58
69
40
33
25
22
64
65
72
75
85
79
82
80
80
77
78

Medium Clouds (% Sky Obscured)

47
42
44
40
40
36
24
12
2
2
2
42
60
64
65
72
72
70
65
60
50
35
25
25

High Clouds (% Sky Obscured)

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

ISS Passover

Visibility (miles)

4
5
5
5
4
9
9
9
9
9
9
9
8
2
1
1
2
1
2
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
None
None
Snow
None
None
None
None

Precipitation Probability (%)

14
12
8
7
9
6
10
9
6
8
6
2
3
4
5
3
5
6
23
39
37
35
33
25

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-14
-13
-13
-12
-11
-11
-11
-10
-11
-11
-10
-10
-12
-12
-13
-13
-13
-14
-15
-14
-15
-15
-15
-15

Dew Point (°C)

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

Relative Humidity (%)

85
85
85
85
84
85
84
84
87
85
85
85
87
88
88
88
88
88
88
88
90
88
90
88

Pressure (mb)

1019
1019
1019
1018
1018
1018
1018
1018
1019
1019
1019
1019
1018
1018
1018
1018
1018
1018
1017
1017
1017
1017
1017
1017

Ozone (du)

438
435
431
429
430
432
435
431
427
425
418
411
413
409
399
419
449
435
423
409
421
426
430
430

Thursday 5

Waning Gibbous 79%

21:43

09:01

10 Bad
11 Bad
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad
17 Good
18 OK
19 Good
20 Good
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: 07:07, Set: 17:07, Transit: 12:08. Moon - Rise: 21:43, Set: 09:01. Civil Dark: 17:38 - 06:36. Nautical Dark: 18:13 - 06:01. Astro Dark: 18:48 - 05:26

Total Clouds (% Sky Obscured)

76
77
76
69
66
70
67
12
45
10
16
58
94
96
98
100
98
98
97
97
96
96
98
100

Low Clouds (% Sky Obscured)

76
73
67
52
37
29
25
9
18
6
9
11
17
30
66
36
60
88
88
85
83
82
80
81

Medium Clouds (% Sky Obscured)

20
20
20
18
9
2
2
0
0
0
4
3
24
57
48
61
75
84
73
64
51
61
81
100

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
1
14
36
50
61
69
39
10
16
27
38
61
82
100

ISS Passover

Visibility (miles)

0
1
2
4
2
4
9
9
9
9
9
9
9
9
9
9
6
3
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
None
None
None
Snow
Snow
Snow
Snow

Precipitation Probability (%)

25
12
21
20
22
5
1
0
0
0
0
0
0
0
0
10
15
20
29
36
41
48
55
58

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

-11
-11
-11
-11
-11
-10
-11
-11
-12
-12
-13
-14
-15
-15
-14
-14
-15
-15
-14
-14
-14
-13
-13
-12

Relative Humidity (%)

85
83
78
77
79
80
79
78
80
81
81
83
83
83
85
85
86
86
88
88
86
88
88
88

Pressure (mb)

1017
1017
1016
1016
1015
1015
1015
1015
1015
1015
1015
1015
1014
1014
1013
1012
1012
1011
1010
1009
1008
1007
1006
1005

Ozone (du)

432
436
439
445
442
429
420
416
405
407
411
413
416
415
418
414
414
414
414
411
409
406
410
414

Friday 6

Waning Gibbous 70%

22:52

09:19

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: 07:06, Set: 17:09, Transit: 12:08. Moon - Rise: 22:52, Set: 09:19. Civil Dark: 17:40 - 06:35. Nautical Dark: 18:15 - 06:00. Astro Dark: 18:49 - 05:25

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
99
99
98
97
96
97
98
89
90
90
85
85
75
50
50

Low Clouds (% Sky Obscured)

82
82
83
85
87
89
88
88
88
90
90
88
89
87
85
56
28
0
0
5
20
20
20
15

Medium Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
98
96
94
91
92
90
90
85
85
85
85
80
64
47
47

High Clouds (% Sky Obscured)

95
91
86
81
75
66
57
53
40
30
16
0
0
0
0
0
0
0
0
0
0
0
0
0

ISS Passover

Visibility (miles)

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

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

Precipitation Probability (%)

56
53
52
64
74
89
94
94
90
82
81
83
77
69
62
57
52
47
44
41
37
33
29
27

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

10
10
10
11
10
9
7
5
3
5
6
7
9
10
12
14
13
12
11
10
10
9
9
9

Chance of Frost

Temperature (°C)

-9
-8
-7
-6
-6
-6
-5
-6
-6
-6
-6
-7
-8
-9
-10
-12
-13
-14
-15
-16
-17
-18
-18
-18

Feels Like (°C)

-17
-17
-17
-15
-12
-12
-12
-12
-12
-13
-11
-11
-10
-11
-12
-13
-18
-19
-19
-20
-20
-20
-25
-24

Dew Point (°C)

-11
-10
-9
-7
-7
-7
-6
-7
-6
-6
-7
-8
-9
-11
-12
-14
-15
-16
-17
-18
-19
-20
-21
-21

Relative Humidity (%)

90
90
90
92
92
92
94
92
94
94
92
92
90
87
85
80
81
83
82
82
81
81
80
80

Pressure (mb)

1004
1003
1002
1001
1000
1000
999
999
999
999
1000
1000
1001
1002
1004
1005
1007
1008
1010
1011
1012
1013
1014
1015

Ozone (du)

418
422
427
431
432
433
434
440
445
451
455
459
463
472
481
491
492
494
496
496
496
496
492
488

Saturday 7

Waning Gibbous 61%

23:59

09:39

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 Bad
01 Bad
02 Bad
03 Bad
04 Bad
05 Bad
06 Bad

Sun - Rise: 07:04, Set: 17:10, Transit: 12:08. Moon - Rise: 23:59, Set: 09:39. Civil Dark: 17:41 - 06:33. Nautical Dark: 18:16 - 05:58. Astro Dark: 18:51 - 05:24

Total Clouds (% Sky Obscured)

60
80
85
90
95
100
100
98
100
100
100
100
99
99
98
91
84
80
72
65
61

Low Clouds (% Sky Obscured)

15
20
25
25
30
40
50
70
65
74
78
72
77
80
85
82
80
80
72
65
61

Medium Clouds (% Sky Obscured)

41
27
13
11
9
6
11
19
25
46
72
97
76
55
34
25
17
13
7
6
5

High Clouds (% Sky Obscured)

0
0
0
0
0
0
8
27
30
20
12
0
5
3
0
0
0
0
0
0
0

ISS Passover

Visibility (miles)

0
0
0
0
1
2
3
5
7
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

Precipitation Type

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

Precipitation Probability (%)

27
26
24
21
19
14
14
12
5
7
7
3
8
8
7
15
21
27
37
42
45

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-24
-24
-24
-24
-22
-22
-23
-22
-22
-22
-24
-25
-25
-25
-25
-25
-28
-28
-28
-28
-28

Dew Point (°C)

-21
-21
-20
-19
-19
-20
-20
-21
-21
-22
-23
-23
-24
-25
-25
-26
-26
-26
-26
-27
-27

Relative Humidity (%)

78
78
78
77
75
72
70
68
67
65
64
64
65
64
62
61
61
61
61
60
60

Pressure (mb)

1016
1015
1015
1015
1015
1015
1015
1015
1016
1016
1016
1016
1016
1015
1015
1015
1015
1014
1014
1014
1014

Ozone (du)

483
474
465
455
452
449
446
451
456
461
463
465
467
474
482
489
490
492
493
493
493

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

Generated: 01/02/26 09:55:57. Forecast: 01/02/26 to 07/02/26. Timezone: UTC-5.00