Clear Outside v1.0 - International Weather Forecasts For Astronomers

Friday 18

Waning Gibbous 67%

02:01

09:41

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
15 Bad

Sun - Rise: 05:58, Set: 19:48, Transit: 12:54. Moon - Rise: 02:01, Set: 09:41. Civil Dark: 20:20 - 05:26. Nautical Dark: 20:59 - 04:46. Astro Dark: 21:42 - 04:03

Total Clouds (% Sky Obscured)

100
100
100
99
97
100
81
78
100
100
100
100
100
100
100
99
100
100
99
100
100
100
100
100

Low Clouds (% Sky Obscured)

60
100
97
98
95
92
72
56
87
81
66
96
100
90
99
94
96
98
97
100
100
100
100
100

Medium Clouds (% Sky Obscured)

100
100
43
37
24
27
8
25
45
99
100
95
94
92
67
86
74
50
88
62
78
87
52
46

High Clouds (% Sky Obscured)

74
100
70
4
0
38
10
8
100
86
100
100
100
100
100
92
100
100
83
65
100
95
100
100

ISS Passover

Visibility (miles)

9
8
6
9
9
9
9
9
9
9
1
0
0
0
0
0
0
0
0
0
0
0
3
9

Fog (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
19
10
20
12
2
1
0
0
0

Precipitation Type

Very Light Rain
Very Light Rain
None
None
None
None
None
None
None
None
Very Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Very Light Rain
None
None
None
None
None
None

Precipitation Probability (%)

69
52
11
26
1
0
0
0
5
58
66
95
95
95
82
95
95
66
51
45
34
45
31
18

Precipitation Amount (mm)

0.3
0.3
0
0
0
0
0
0
0
0
0.3
1.4
0.5
0.8
0.5
0.5
1.4
0.3
0
0
0
0
0
0

Wind Speed/Direction (mph)

8
7
6
6
4
4
3
3
3
1
3
4
4
5
6
6
6
5
6
8
10
13
14
15

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

1
0
1
2
2
3
4
4
4
4
4
4
4
4
4
6
7
8
8
9
10
10
9
9

Dew Point (°C)

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

Relative Humidity (%)

80
83
89
94
96
96
96
96
98
98
98
100
100
100
100
100
100
100
98
98
98
98
96
93

Pressure (mb)

1014
1012
1012
1012
1011
1011
1011
1011
1010
1010
1009
1008
1007
1007
1006
1005
1005
1004
1004
1003
1002
1002
1002
1003

Ozone (du)

363
363
367
369
372
371
369
367
365
363
364
362
360
356
353
352
351
345
345
347
348
348
346
346

Saturday 19

Waning Gibbous 57%

02:43

10:50

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 Good
10 Good
11 Good
12 Good
13 Good
14 Good
15 Good

Sun - Rise: 05:56, Set: 19:49, Transit: 12:53. Moon - Rise: 02:43, Set: 10:50. Civil Dark: 20:21 - 05:24. Nautical Dark: 21:01 - 04:44. Astro Dark: 21:44 - 04:01

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
89
99
75
72
75
73
53
62
70
47
13
2
0
0
0
0
0

Low Clouds (% Sky Obscured)

100
91
92
99
97
100
100
89
98
71
72
75
72
50
62
70
47
9
2
0
0
0
0
0

Medium Clouds (% Sky Obscured)

68
88
40
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)

100
93
100
100
100
100
100
60
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
7
9
9
5
8
9
5
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
3
1
1
0
3
8
20
4
3
2
13
1
3
1
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

8
7
5
3
1
-1
-3
-5
-6
-7
-8
-9
-10
-11
-12
-12
-11
-10
-9
-7
-5
-4
-3
-2

Dew Point (°C)

10
9
8
6
5
3
1
-2
-3
-4
-5
-6
-7
-8
-7
-8
-9
-10
-12
-13
-13
-14
-14
-13

Relative Humidity (%)

91
91
91
90
91
91
88
80
84
81
81
84
79
79
84
77
72
61
48
38
33
29
27
28

Pressure (mb)

1004
1006
1007
1008
1010
1011
1012
1013
1015
1016
1017
1018
1019
1021
1022
1023
1024
1025
1025
1025
1025
1025
1026
1026

Ozone (du)

345
346
348
347
348
351
353
357
367
381
393
401
409
409
411
415
420
415
409
403
402
396
392
382

Sunday 20

Third Quarter 46%

03:16

12:05

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

Sun - Rise: 05:55, Set: 19:50, Transit: 12:53. Moon - Rise: 03:16, Set: 12:05. Civil Dark: 20:23 - 05:22. Nautical Dark: 21:02 - 04:42. Astro Dark: 21:46 - 03:58

Total Clouds (% Sky Obscured)

0
0
0
4
50
50
87
31
94
44
39
98
99
97
92
94
81
94
97
40
94
100
100
100

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
16
63

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
66
49
50
31
51
35
70
72
40
81
91
94
97

High Clouds (% Sky Obscured)

0
0
0
1
5
11
76
31
94
44
39
98
96
91
73
64
61
74
45
32
84
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 (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
10
18

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)

15
14
12
11
9
7
8
8
7
6
4
4
3
3
3
3
2
3
4
6
6
7
8
8

Chance of Frost

Temperature (°C)

4
4
4
2
1
-1
-1
-1
-1
-2
-3
-3
-3
-3
-3
-2
0
2
4
5
7
9
8
8

Feels Like (°C)

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

Dew Point (°C)

-13
-11
-10
-9
-9
-8
-8
-7
-7
-7
-7
-7
-6
-6
-6
-7
-7
-8
-9
-10
-9
-8
-8
-7

Relative Humidity (%)

29
32
37
43
49
55
59
62
62
66
71
73
75
76
76
68
57
45
38
32
30
30
31
33

Pressure (mb)

1026
1026
1027
1028
1029
1030
1030
1030
1030
1030
1030
1030
1030
1030
1030
1030
1029
1028
1027
1025
1024
1023
1021
1021

Ozone (du)

373
365
361
357
357
366
367
361
355
352
352
350
349
349
349
349
349
347
346
345
345
345
345
342

Monday 21

Waning Crescent 35%

03:42

13:23

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
15 Bad

Sun - Rise: 05:53, Set: 19:52, Transit: 12:53. Moon - Rise: 03:42, Set: 13:23. Civil Dark: 20:24 - 05:20. Nautical Dark: 21:04 - 04:40. Astro Dark: 21:48 - 03:56

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
98
96
94
97
99
100
100
100
100
100
100
100
100
100
100
99
99

Low Clouds (% Sky Obscured)

73
76
75
78
85
93
100
98
96
94
97
99
100
100
100
100
100
100
100
100
100
100
99
99

Medium Clouds (% Sky Obscured)

100
100
100
100
97
99
100
92
87
82
69
57
45
1
45
40
40
14
22
4
8
67
35
84

High Clouds (% Sky Obscured)

100
100
84
85
53
27
20
40
6
1
50
50
25
0
0
0
0
0
0
0
0
0
0
0

ISS Passover

Visibility (miles)

9
9
9
9
9
9
8
9
0
0
0
0
0
0
0
0
0
0
2
1
4
0
1
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
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Very Light Rain
Very Light Rain
Light Rain
Very Light Rain
Very Light Rain
None
None
None
None
None
None

Precipitation Probability (%)

27
70
86
89
80
95
95
95
95
95
95
95
95
68
72
77
69
65
48
44
39
26
33
41

Precipitation Amount (mm)

0
0.4
0.5
0.7
0.4
1.2
1
1
0.4
1.3
0.8
0.5
0.8
0.3
0.3
0.5
0.3
0.3
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

41
51
68
75
77
79
89
96
96
98
98
96
98
98
98
98
98
100
98
98
98
96
96
96

Pressure (mb)

1020
1019
1019
1018
1017
1016
1016
1014
1013
1012
1012
1011
1011
1010
1009
1009
1008
1008
1009
1009
1009
1010
1010
1010

Ozone (du)

341
341
342
343
345
346
347
345
345
346
345
347
349
351
351
352
353
356
358
363
361
355
354
353

Tuesday 22

Waning Crescent 24%

04:03

14:43

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
15 Bad

Sun - Rise: 05:51, Set: 19:53, Transit: 12:53. Moon - Rise: 04:03, Set: 14:43. Civil Dark: 20:26 - 05:19. Nautical Dark: 21:06 - 04:38. Astro Dark: 21:50 - 03:53

Total Clouds (% Sky Obscured)

99
97
95
93
93
93
95
92
91
93
95
97
97
98
99
100
100
100
100
100
100
98
94
91

Low Clouds (% Sky Obscured)

99
97
95
89
87
85
86
82
80
80
83
86
90
94
95
97
98
98
97
94
89
86
83
81

Medium Clouds (% Sky Obscured)

93
52
47
44
60
52
52
46
36
4
5
3
4
5
7
9
7
4
0
0
0
0
1
2

High Clouds (% Sky Obscured)

0
0
0
0
0
3
3
3
1
0
0
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
5
6
7
7
8
8
8
7

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 (%)

41
17
12
21
16
25
16
11
21
9
4
6
17
9
16
12
13
12
12
13
14
15
16
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)

9
9
9
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
7
7
7

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

98
98
98
96
98
96
98
98
98
96
96
98
98
96
98
96
91
91
88
86
86
85
85
86

Pressure (mb)

1011
1011
1012
1013
1013
1014
1015
1015
1015
1016
1016
1016
1017
1017
1018
1018
1019
1019
1020
1020
1020
1020
1020
1020

Ozone (du)

352
352
353
355
356
358
360
361
362
364
364
364
366
368
370
372
372
372
371
371
372
373
375
375

Wednesday 23

Waning Crescent 15%

04:23

16:04

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 OK
07 OK
08 OK
09 OK
10 OK
11 OK
12 OK
13 OK
14 Bad
15 Bad

Sun - Rise: 05:49, Set: 19:55, Transit: 12:53. Moon - Rise: 04:23, Set: 16:04. Civil Dark: 20:27 - 05:17. Nautical Dark: 21:07 - 04:36. Astro Dark: 21:52 - 03:51

Total Clouds (% Sky Obscured)

87
81
82
86
85
84
83
87
92
97
82
68
53
49
46
27
31
28
21
16
15
17
16
14

Low Clouds (% Sky Obscured)

83
78
72
63
63
68
72
79
87
94
80
67
53
46
39
27
31
28
17
16
15
17
16
14

Medium Clouds (% Sky Obscured)

2
19
36
54
45
40
35
45
55
65
43
22
0
5
10
7
4
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
1
2
3
6
9
12
12
12

ISS Passover

Visibility (miles)

6
4
6
8
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 (%)

17
16
13
4
7
11
15
14
10
2
4
4
0
1
1
0
1
3
3
14
22
30
43
50

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

Chance of Frost

Temperature (°C)

5
5
5
4
4
4
4
3
3
2
2
2
1
1
2
2
4
5
7
8
9
10
11
11

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

89
91
91
89
86
86
83
82
80
79
77
80
83
88
80
74
71
62
54
48
43
39
35
35

Pressure (mb)

1020
1020
1021
1021
1022
1022
1023
1023
1023
1023
1024
1024
1024
1025
1025
1026
1026
1025
1025
1025
1024
1023
1023
1022

Ozone (du)

376
377
378
379
381
380
380
379
380
381
382
382
383
383
382
381
380
377
375
373
370
368
366
365

Thursday 24

Waning Crescent 7%

04:41

16:04

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

Sun - Rise: 05:48, Set: 19:56, Transit: 12:52. Moon - Rise: 04:41, Set: 16:04. Civil Dark: 20:29 - 05:15. Nautical Dark: 21:09 - 04:34. Astro Dark: 21:54 - 03:49

Total Clouds (% Sky Obscured)

13
22
30
41
60
77
94
93
93
93
93
94
94
93
93
97
98
99
100
100
100
100

Low Clouds (% Sky Obscured)

13
22
30
41
60
64
42
39
32
32
36
41
47
59
71
81
87
92
99
99
100
100

Medium Clouds (% Sky Obscured)

3
6
10
25
30
35
38
38
35
30
25
24
20
20
20
20
25
30
45
80
93
100

High Clouds (% Sky Obscured)

12
22
28
32
50
67
85
84
83
59
42
24
25
15
10
5
0
0
5
0
0
0

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
7
6
4
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

Precipitation Type

None
Very Light Rain
Light Rain
Light Rain
Very Light Rain
None
None
None
None
None
None
None
None
None
None
None
None
Very Light Rain
Light Rain
Light Rain
Light Rain
Light Rain

Precipitation Probability (%)

53
63
67
67
56
43
23
21
16
5
6
4
0
2
6
11
38
56
71
87
95
95

Precipitation Amount (mm)

0
0.3
0.4
0.4
0.2
0
0
0
0
0
0
0
0
0
0
0
0
0.3
0.4
0.6
0.7
0.8

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

12
12
10
8
6
5
4
4
3
3
3
3
3
3
3
3
3
4
4
5
5
4

Feels Like (°C)

10
10
10
11
12
4
3
3
2
3
2
0
-0
-0
0
0
0
0
1
1
1
0

Dew Point (°C)

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

Relative Humidity (%)

34
34
42
52
66
70
73
77
80
83
86
86
85
85
83
82
80
86
89
94
94
98

Pressure (mb)

1022
1022
1022
1023
1023
1023
1024
1024
1024
1024
1024
1024
1025
1025
1025
1025
1025
1024
1023
1023
1022
1022

Ozone (du)

363
362
360
359
357
357
357
357
356
355
354
353
352
352
352
352
353
353
353
354
357
359

Forecast for Lac-Saint-Louis, Lanaudière, Canada (46.57,-73.80)

Generated: 18/04/25 16:12:04. Forecast: 18/04/25 to 24/04/25. Timezone: UTC-4.00