Clear Outside v1.0 - International Weather Forecasts For Astronomers

Sunday 4

Waning Gibbous 95%

17:56

08:52

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

Sun - Rise: 07:34, Set: 16:25, Transit: 11:59. Moon - Rise: 17:56, Set: 08:52. Civil Dark: 16:58 - 07:00. Nautical Dark: 17:36 - 06:23. Astro Dark: 18:12 - 05:47

Total Clouds (% Sky Obscured)

82
57
44
46
49
48
45
45
72
73
62
46
8
19
13
3
3
3
3
2
2
3
23
15

Low Clouds (% Sky Obscured)

63
57
44
46
49
48
45
45
64
64
61
46
1
7
5
0
1
1
1
1
1
1
1
1

Medium Clouds (% Sky Obscured)

23
3
2
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
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
22
13

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 (%)

0
0
0
0
1
1
0
1
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)

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

Chance of Frost

Temperature (°C)

-20
-22
-20
-20
-18
-17
-15
-14
-13
-13
-13
-14
-14
-15
-15
-16
-16
-17
-17
-17
-18
-18
-19
-19

Feels Like (°C)

-23
-25
-22
-21
-19
-18
-17
-16
-16
-17
-17
-17
-17
-18
-19
-19
-18
-18
-19
-19
-19
-20
-20
-21

Dew Point (°C)

-22
-24
-22
-22
-21
-19
-18
-17
-17
-16
-16
-16
-16
-17
-17
-18
-18
-19
-19
-20
-20
-21
-21
-21

Relative Humidity (%)

83
81
81
80
80
80
77
75
73
74
79
83
84
82
82
83
82
82
81
80
81
80
80
81

Pressure (mb)

1018
1018
1019
1020
1020
1020
1020
1020
1019
1019
1020
1020
1020
1021
1022
1022
1022
1022
1022
1022
1022
1023
1023
1023

Ozone (du)

376
373
363
364
368
370
363
362
355
352
345
337
338
342
344
338
343
349
350
347
340
340
334
331

Monday 5

Waning Gibbous 89%

19:17

09:23

05 OK
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
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad
01 Bad
02 Bad
03 Bad
04 Bad

Sun - Rise: 07:33, Set: 16:26, Transit: 12:00. Moon - Rise: 19:17, Set: 09:23. Civil Dark: 16:59 - 07:00. Nautical Dark: 17:37 - 06:22. Astro Dark: 18:12 - 05:47

Total Clouds (% Sky Obscured)

20
42
70
91
90
100
100
100
100
100
100
100
91
82
89
89
92
88
98
99
93
94
98
92

Low Clouds (% Sky Obscured)

1
1
2
2
2
3
19
30
67
81
87
86
76
68
77
75
80
73
86
94
93
94
90
83

Medium Clouds (% Sky Obscured)

2
7
57
88
84
100
100
100
100
100
100
100
52
41
53
19
21
27
24
21
62
34
44
34

High Clouds (% Sky Obscured)

15
32
52
61
52
95
100
100
100
100
100
100
52
6
13
3
4
8
85
85
21
8
4
7

ISS Passover

Visibility (miles)

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

Precipitation Probability (%)

0
0
0
0
0
0
0
1
5
30
46
52
38
28
16
3
0
0
1
1
0
5
0
0

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

2
1
1
1
2
2
2
2
3
3
3
4
4
4
4
5
5
5
4
5
4
5
5
5

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-21
-21
-22
-23
-23
-21
-19
-18
-17
-17
-16
-16
-16
-16
-16
-17
-18
-19
-18
-19
-19
-18
-18
-18

Dew Point (°C)

-22
-22
-22
-22
-22
-21
-19
-17
-16
-15
-15
-14
-13
-14
-14
-15
-16
-16
-16
-16
-17
-16
-16
-16

Relative Humidity (%)

80
81
80
79
77
76
76
77
78
79
81
86
90
88
88
86
86
86
84
86
84
86
86
86

Pressure (mb)

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

Ozone (du)

327
324
327
329
333
336
337
337
338
341
342
344
346
345
345
348
350
352
352
355
354
352
348
350

Tuesday 6

Waning Gibbous 81%

20:33

09:47

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
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad
01 Bad
02 Bad
03 Bad
04 Bad

Sun - Rise: 07:33, Set: 16:27, Transit: 12:00. Moon - Rise: 20:33, Set: 09:47. Civil Dark: 17:00 - 07:00. Nautical Dark: 17:38 - 06:22. Astro Dark: 18:13 - 05:47

Total Clouds (% Sky Obscured)

88
91
84
88
99
96
100
96
100
99
100
100
100
100
100
100
100
100
100
100
100
100
100
99

Low Clouds (% Sky Obscured)

83
87
79
88
99
96
100
94
99
53
29
3
3
3
4
5
4
44
92
97
97
97
98
95

Medium Clouds (% Sky Obscured)

29
32
25
2
7
0
0
1
25
60
100
100
100
100
100
100
100
100
100
100
100
96
100
97

High Clouds (% Sky Obscured)

0
0
0
4
4
5
12
45
80
99
94
100
100
100
100
100
100
97
100
100
100
92
75
52

ISS Passover

Visibility (miles)

2
2
2
1
0
0
1
1
2
3
4
5
4
8
4
9
9
5
0
0
0
5
5
8

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
Frozen rai
Snow
Snow
Snow
Snow
Snow

Precipitation Probability (%)

0
2
0
2
14
18
6
2
1
3
1
0
1
1
0
12
38
67
95
95
95
95
95
86

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.3
1
1.8
0.9
0.7
0.5
0.4

Wind Speed/Direction (mph)

5
5
4
4
5
5
5
5
5
6
6
7
7
6
8
8
8
7
7
7
7
10
12
12

Chance of Frost

Temperature (°C)

-14
-14
-14
-14
-14
-12
-11
-10
-9
-8
-8
-8
-9
-9
-9
-9
-9
-8
-7
-7
-6
-5
-4
-3

Feels Like (°C)

-18
-18
-18
-18
-17
-17
-15
-14
-13
-12
-12
-13
-13
-13
-14
-14
-13
-12
-12
-11
-10
-10
-10
-9

Dew Point (°C)

-16
-16
-16
-16
-15
-14
-13
-11
-10
-10
-9
-9
-10
-10
-10
-10
-9
-9
-8
-7
-7
-6
-5
-4

Relative Humidity (%)

86
86
86
88
88
86
88
88
90
90
92
94
94
94
94
94
94
94
96
98
98
94
94
94

Pressure (mb)

1019
1020
1020
1020
1020
1020
1019
1018
1017
1017
1016
1015
1014
1014
1013
1012
1011
1009
1008
1007
1006
1005
1004
1003

Ozone (du)

350
350
351
352
349
347
351
351
351
348
348
351
352
352
352
354
356
359
360
357
357
361
361
365

Wednesday 7

Waning Gibbous 72%

21:45

10:07

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
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad
01 Bad
02 Bad
03 Bad
04 Bad

Sun - Rise: 07:33, Set: 16:28, Transit: 12:00. Moon - Rise: 21:45, Set: 10:07. Civil Dark: 17:01 - 06:59. Nautical Dark: 17:39 - 06:22. Astro Dark: 18:14 - 05:47

Total Clouds (% Sky Obscured)

98
97
98
98
98
98
98
98
97
97
97
97
97
97
98
99
77
86
100
100
99
98
97
96

Low Clouds (% Sky Obscured)

92
90
91
92
94
94
94
94
94
94
96
97
97
97
98
91
57
76
100
99
99
97
95
95

Medium Clouds (% Sky Obscured)

95
91
92
92
90
93
94
87
51
45
60
24
27
22
92
89
21
22
25
35
32
22
6
26

High Clouds (% Sky Obscured)

30
25
30
37
44
42
40
38
24
12
0
0
3
1
15
20
1
1
2
4
14
25
35
25

ISS Passover

Visibility (miles)

9
4
9
9
4
0
0
0
0
0
0
0
0
0
0
0
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

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

Precipitation Probability (%)

91
95
78
85
95
95
59
46
42
39
48
53
46
38
34
16
10
9
11
8
8
6
2
4

Precipitation Amount (mm)

0.5
0.6
0.3
0.4
1.2
1
0.2
0.1
0.1
0.1
0.3
0.3
0.2
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

92
96
96
96
98
98
100
98
100
98
98
98
98
98
96
98
91
86
86
86
89
89
89
91

Pressure (mb)

1002
1002
1001
1001
1001
1001
1001
1001
1001
1002
1003
1003
1005
1006
1007
1008
1009
1010
1011
1012
1012
1013
1014
1015

Ozone (du)

369
367
368
367
366
363
363
363
368
374
375
377
374
368
363
364
374
370
374
372
370
369
364
363

Thursday 8

Waning Gibbous 62%

22:54

10:24

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

Sun - Rise: 07:33, Set: 16:29, Transit: 12:01. Moon - Rise: 22:54, Set: 10:24. Civil Dark: 17:03 - 06:59. Nautical Dark: 17:40 - 06:22. Astro Dark: 18:15 - 05:46

Total Clouds (% Sky Obscured)

96
96
97
98
99
98
87
70
49
69
49
40
51
58
71
84
100
100
100
100
100
100
100
99

Low Clouds (% Sky Obscured)

94
93
94
95
97
94
87
70
49
66
49
40
51
58
50
43
31
40
46
52
65
80
96
95

Medium Clouds (% Sky Obscured)

46
65
53
38
23
13
5
0
0
4
4
10
18
31
55
71
86
91
97
100
100
100
100
85

High Clouds (% Sky Obscured)

16
7
5
2
1
1
1
2
1
7
3
11
19
27
37
48
67
79
90
100
95
95
90
85

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
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
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
Frozen rai
Frozen rai
Frozen rai

Precipitation Probability (%)

3
3
4
5
3
4
0
1
0
0
0
0
0
0
0
1
0
0
2
8
40
54
62
55

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.2
0.3
0.2

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

91
91
91
91
92
92
96
100
100
98
96
98
96
96
96
94
94
91
91
89
89
91
91
91

Pressure (mb)

1015
1016
1016
1017
1018
1018
1018
1018
1018
1018
1018
1018
1018
1018
1018
1017
1016
1016
1015
1014
1013
1013
1013
1013

Ozone (du)

360
355
351
344
342
340
337
331
327
326
324
321
320
322
324
328
332
336
339
342
346
349
352
355

Friday 9

Waning Gibbous 62%

00:01

10:40

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
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad
01 Bad
02 Bad
03 Bad
04 Bad

Sun - Rise: 07:32, Set: 16:30, Transit: 12:01. Moon - Rise: 00:01, Set: 10:40. Civil Dark: 17:04 - 06:59. Nautical Dark: 17:41 - 06:22. Astro Dark: 18:16 - 05:46

Total Clouds (% Sky Obscured)

98
95
86
78
70
72
74
76
82
89
95
97
97
99
99
99
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

91
89
82
75
68
71
73
75
67
59
51
35
18
2
0
0
0
0
0
0
0
0
0
18

Medium Clouds (% Sky Obscured)

66
50
31
15
3
2
1
0
14
24
46
51
46
42
54
73
98
99
99
100
100
100
100
100

High Clouds (% Sky Obscured)

85
85
64
36
12
10
7
4
13
20
31
65
89
99
99
99
100
100
100
100
94
82
76
79

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 (%)

47
33
22
12
2
5
6
2
6
6
0
3
1
0
1
1
0
0
0
0
3
3
2
16

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

93
94
96
94
91
89
89
89
91
88
84
81
83
84
86
87
91
92
92
94
94
92
94
94

Pressure (mb)

1013
1014
1014
1016
1017
1018
1018
1019
1019
1019
1020
1020
1021
1021
1021
1021
1021
1021
1020
1019
1019
1018
1017
1016

Ozone (du)

353
351
349
347
345
343
340
337
334
329
325
321
317
314
310
307
304
301
302
302
302
299
297
294

Saturday 10

Third Quarter 52%

01:08

10:57

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
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad

Sun - Rise: 07:32, Set: 16:31, Transit: 12:02. Moon - Rise: 01:08, Set: 10:57. Civil Dark: 17:05 - 06:59. Nautical Dark: 17:42 - 06:22. Astro Dark: 18:17 - 05:46

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
100
100
100
100
99
98
98
99
100
100

Low Clouds (% Sky Obscured)

35
53
69
84
100
100
100
100
100
100
100
99
98
97
95
91
88
90
93
94

Medium Clouds (% Sky Obscured)

100
100
100
100
100
100
99
99
99
98
98
98
99
100
96
93
91
97
99
100

High Clouds (% Sky Obscured)

78
78
62
54
40
17
8
0
0
0
0
0
0
0
0
0
0
0
0
0

ISS Passover

Visibility (miles)

9
9
9
7
5
3
2
1
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

Precipitation Type

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

Precipitation Probability (%)

22
26
42
58
74
95
95
95
95
95
95
95
95
95
95
95
87
84
80
77

Precipitation Amount (mm)

0
0
0
0.2
0.4
0.8
1
1.1
1.1
1.1
1.3
1.4
1.4
1.6
1.2
0.8
0.4
0.4
0.5
0.5

Wind Speed/Direction (mph)

7
8
8
9
10
11
12
13
14
13
12
11
10
8
7
6
4
4
6
8

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

94
92
94
92
94
92
92
94
94
96
96
98
98
98
100
100
100
98
98
96

Pressure (mb)

1015
1014
1013
1012
1011
1010
1008
1006
1004
1003
1002
1001
1001
1000
1000
999
998
998
998
998

Ozone (du)

297
301
304
305
306
307
312
317
322
327
331
335
342
348
355
358
362
365
371
378

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

Generated: 04/01/26 04:32:58. Forecast: 04/01/26 to 10/01/26. Timezone: UTC-5.00