Clear Outside v1.0 - International Weather Forecasts For Astronomers

Friday 21

Waxing Crescent 6%

09:50

17:40

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
16 OK
17 Bad

Sun - Rise: 07:12, Set: 16:25, Transit: 11:49. Moon - Rise: 09:50, Set: 17:40. Civil Dark: 16:58 - 06:39. Nautical Dark: 17:34 - 06:03. Astro Dark: 18:10 - 05:28

Total Clouds (% Sky Obscured)

62
58
45
50
48
44
42
48
92
61
45
67
88
86
51
49
70
66
71
62
61
60
46
45

Low Clouds (% Sky Obscured)

44
58
45
44
25
44
42
48
72
51
45
67
76
74
51
49
70
49
65
54
42
45
46
45

Medium Clouds (% Sky Obscured)

2
0
0
36
41
37
19
24
20
25
33
0
0
0
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

0
3
3
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
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
1
0
0
4
12
8
8
6
4
2
2
0
0
0
0
4
20
0
0
14
1
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)

3
3
3
3
3
2
2
1
2
3
3
4
4
5
5
5
7
7
8
8
8
7
6
4

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

92
94
94
96
96
96
94
96
96
92
96
96
94
92
91
89
83
78
73
71
76
76
83
89

Pressure (mb)

1011
1011
1012
1012
1012
1012
1012
1012
1012
1012
1012
1012
1012
1013
1014
1014
1014
1015
1014
1015
1015
1015
1016
1017

Ozone (du)

302
302
301
300
301
300
298
299
302
306
306
307
308
309
312
314
317
319
319
319
319
318
313
311

Saturday 22

Waxing Crescent 11%

10:38

No Set

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
16 Bad
17 Bad

Sun - Rise: 07:13, Set: 16:25, Transit: 11:49. Moon - Rise: 10:38, Set: No Set. Civil Dark: 16:57 - 06:41. Nautical Dark: 17:34 - 06:04. Astro Dark: 18:10 - 05:29

Total Clouds (% Sky Obscured)

40
88
93
100
94
94
100
100
100
100
100
100
99
99
98
98
99
100
100
99
100
100
98
98

Low Clouds (% Sky Obscured)

40
52
66
62
55
62
63
60
43
38
35
77
82
79
90
91
88
90
95
94
97
100
95
95

Medium Clouds (% Sky Obscured)

0
0
6
85
71
68
87
100
100
100
100
100
98
96
91
93
71
88
99
91
98
71
92
79

High Clouds (% Sky Obscured)

3
67
67
99
58
59
95
100
100
68
69
55
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
6
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

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

Precipitation Probability (%)

0
0
0
0
0
0
0
0
0
0
0
6
20
46
69
83
86
85
86
82
94
81
60
41

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0.1
0.3
0.6
0.6
0.6
0.7
0.5
0.8
0.6
0.3
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

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

Pressure (mb)

1017
1017
1017
1017
1017
1017
1017
1016
1016
1016
1015
1014
1014
1014
1013
1013
1012
1011
1010
1009
1009
1009
1009
1009

Ozone (du)

310
308
307
307
309
308
309
311
312
314
315
317
321
323
324
324
327
328
327
329
330
331
333
336

Sunday 23

Waxing Crescent 18%

11:18

18:38

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
16 Bad
17 Bad

Sun - Rise: 07:15, Set: 16:24, Transit: 11:49. Moon - Rise: 11:18, Set: 18:38. Civil Dark: 16:57 - 06:42. Nautical Dark: 17:33 - 06:05. Astro Dark: 18:09 - 05:30

Total Clouds (% Sky Obscured)

95
98
97
98
97
99
99
98
96
83
83
85
69
76
78
81
87
87
88
68
74
51
81
68

Low Clouds (% Sky Obscured)

86
95
92
93
92
90
88
85
82
70
56
64
52
63
68
70
85
87
83
67
68
51
53
42

Medium Clouds (% Sky Obscured)

88
40
67
73
68
92
91
91
88
72
64
27
0
0
0
0
0
1
14
9
16
1
25
19

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)

0
4
1
0
0
0
0
0
0
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
Snow
None
Snow
Snow
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

36
40
38
42
44
34
30
28
20
15
10
3
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

100
96
94
98
100
98
98
98
98
91
86
81
80
80
81
83
84
86
86
88
88
89
92
96

Pressure (mb)

1009
1009
1010
1010
1010
1011
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1021
1021
1021
1022
1022
1023
1023

Ozone (du)

338
339
337
335
336
335
333
335
337
338
335
332
331
329
327
324
322
319
316
315
312
308
307
304

Monday 24

Waxing Crescent 27%

11:49

19:44

18 Bad
19 OK
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
16 Bad
17 Bad

Sun - Rise: 07:16, Set: 16:23, Transit: 11:50. Moon - Rise: 11:49, Set: 19:44. Civil Dark: 16:56 - 06:43. Nautical Dark: 17:33 - 06:06. Astro Dark: 18:09 - 05:31

Total Clouds (% Sky Obscured)

53
36
73
88
87
87
86
91
96
100
99
99
98
99
99
100
99
99
98
99
99
100
100
100

Low Clouds (% Sky Obscured)

31
33
62
87
60
42
29
7
15
6
6
50
60
57
64
66
66
69
70
73
80
86
88
92

Medium Clouds (% Sky Obscured)

20
1
1
0
19
31
82
46
96
100
95
98
97
98
99
100
99
99
98
97
98
100
98
96

High Clouds (% Sky Obscured)

0
6
38
51
54
57
59
71
84
100
93
87
80
87
93
100
74
49
19
46
74
100
79
62

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
6
9
9
9
9
9
9
9
9
9
9
6

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
Light Rain
Light Rain

Precipitation Probability (%)

0
0
0
0
0
0
0
0
0
0
0
0
1
2
3
1
8
6
6
18
36
45
74
86

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
0.4
0.7

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

94
94
94
96
94
96
94
94
94
94
96
94
94
96
96
96
96
94
96
94
94
94
96
98

Pressure (mb)

1024
1024
1024
1024
1024
1024
1024
1024
1024
1024
1024
1024
1024
1023
1023
1022
1022
1021
1020
1019
1019
1018
1018
1017

Ozone (du)

301
300
298
298
300
299
298
297
298
301
301
301
303
303
304
305
305
305
304
303
301
298
295
295

Tuesday 25

Waxing Crescent 36%

12:15

20:53

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
16 Bad
17 Bad

Sun - Rise: 07:17, Set: 16:23, Transit: 11:50. Moon - Rise: 12:15, Set: 20:53. Civil Dark: 16:56 - 06:44. Nautical Dark: 17:33 - 06:07. Astro Dark: 18:08 - 05:32

Total Clouds (% Sky Obscured)

99
99
98
98
99
99
99
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
96
91

Low Clouds (% Sky Obscured)

94
94
95
96
96
95
95
96
98
100
100
100
100
100
100
100
99
98
97
91
84
78
76
75

Medium Clouds (% Sky Obscured)

96
94
91
94
96
97
33
98
50
36
29
25
22
18
22
26
28
30
33
29
34
35
34
35

High Clouds (% Sky Obscured)

43
12
1
0
0
0
0
15
29
43
27
11
0
0
0
0
1
2
3
13
24
48
62
34

ISS Passover

Visibility (miles)

7
1
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

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

Precipitation Probability (%)

71
58
64
95
93
76
68
62
73
60
40
28
13
19
16
14
25
33
39
36
29
16
24
27

Precipitation Amount (mm)

0.4
0.2
0.2
1.2
0.6
0.4
0.3
0.2
0.4
0.3
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

6
6
6
6
6
6
6
6
6
5
5
5
5
5
5
5
5
5
4
4
4
4
5
5

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

98
98
100
100
100
100
100
98
98
98
98
98
98
98
98
100
98
100
100
98
98
100
100
98

Pressure (mb)

1017
1017
1016
1016
1015
1015
1014
1014
1014
1014
1014
1013
1013
1013
1013
1013
1013
1012
1012
1011
1011
1010
1010
1010

Ozone (du)

294
294
295
296
297
298
297
298
296
294
294
294
295
297
298
299
300
300
300
299
300
301
301
303

Wednesday 26

Waxing Crescent 47%

12:36

22:05

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
16 Bad
17 Bad

Sun - Rise: 07:18, Set: 16:22, Transit: 11:50. Moon - Rise: 12:36, Set: 22:05. Civil Dark: 16:55 - 06:45. Nautical Dark: 17:32 - 06:08. Astro Dark: 18:08 - 05:33

Total Clouds (% Sky Obscured)

84
67
48
31
23
14
5
28
46
72
80
84
88
86
83
84
96
99
100
100
100
100
99
99

Low Clouds (% Sky Obscured)

73
58
43
28
18
9
0
16
39
56
60
57
60
55
50
45
55
64
74
60
47
33
41
48

Medium Clouds (% Sky Obscured)

33
33
21
5
7
13
5
20
24
24
30
33
34
52
72
84
95
97
98
90
87
84
84
78

High Clouds (% Sky Obscured)

0
0
0
3
23
14
5
28
43
9
16
19
25
45
70
75
80
75
50
17
5
0
0
0

ISS Passover

Visibility (miles)

0
0
0
1
1
1
1
1
1
1
1
1
1
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

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

Precipitation Probability (%)

28
27
21
10
72
95
95
95
95
58
43
28
12
11
8
1
3
2
1
5
10
14
22
28

Precipitation Amount (mm)

0
0
0
0
0.4
0.8
1.3
1
0.6
0.2
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

98
98
98
98
98
96
98
98
96
96
96
98
98
98
98
98
98
98
98
98
98
98
98
100

Pressure (mb)

1011
1011
1011
1011
1011
1010
1010
1009
1009
1009
1008
1008
1008
1008
1008
1007
1007
1007
1006
1005
1005
1005
1004
1004

Ozone (du)

304
305
307
308
310
312
314
316
316
316
316
318
319
320
321
322
323
325
326
328
328
328
329
330

Thursday 27

Waxing Crescent 44%

12:56

23:17

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

Sun - Rise: 07:19, Set: 16:22, Transit: 11:51. Moon - Rise: 12:56, Set: 23:17. Civil Dark: 16:55 - 06:46. Nautical Dark: 17:32 - 06:09. Astro Dark: 18:08 - 05:34

Total Clouds (% Sky Obscured)

98
98
98
98
98
97
96
96
95
94
91
92
89
90
92
98
99
100
100

Low Clouds (% Sky Obscured)

60
72
82
89
85
81
75
72
72
72
71
71
70
73
77
81
80
80
81

Medium Clouds (% Sky Obscured)

70
66
59
42
37
44
51
57
63
69
72
76
83
75
73
92
92
94
93

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
11
23
32
32
31
30
27
24
23
23
23
23

ISS Passover

Visibility (miles)

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

Fog (%)

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

Precipitation Probability (%)

31
30
28
20
28
29
28
25
20
7
10
10
8
11
11
13
19
18
20

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

98
98
100
98
98
100
98
98
98
96
96
96
94
96
94
94
93
94
96

Pressure (mb)

1004
1004
1003
1003
1002
1002
1002
1003
1003
1003
1003
1003
1004
1004
1004
1004
1005
1005
1005

Ozone (du)

332
333
336
338
341
342
343
344
345
345
346
345
345
344
344
343
342
342
343

Forecast for ByWard Market, Ottawa, Canada (45.42,-75.69)

Generated: 21/11/25 17:47:46. Forecast: 21/11/25 to 27/11/25. Timezone: UTC-5.00