Clear Outside v1.0 - International Weather Forecasts For Astronomers

Sunday 21

Waxing Crescent 7%

09:52

17:46

16 Bad
17 Bad
18 Bad
19 Bad
20 OK
21 OK
22 Good
23 Good
00 Good
01 OK
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: 07:40, Set: 16:31, Transit: 12:06. Moon - Rise: 09:52, Set: 17:46. Civil Dark: 17:04 - 07:07. Nautical Dark: 17:41 - 06:30. Astro Dark: 18:16 - 05:55

Total Clouds (% Sky Obscured)

94
79
70
47
43
17
4
0
0
20
77
89
93
94
96
99
98
100
99
99
97
99
100
100

Low Clouds (% Sky Obscured)

63
57
52
47
43
17
4
0
0
20
74
78
66
82
76
81
89
84
75
75
73
59
47
45

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
8
30
69
51
80
95
97
99
94
62
67
85
80
77

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
11
36
95

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
0
0
4
3
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
Snow
None
None
None
None
None
None
None

Precipitation Probability (%)

0
0
1
0
0
0
0
0
0
0
1
0
1
1
2
32
45
35
27
13
8
1
0
0

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.2
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

13
12
11
12
11
10
9
8
8
7
6
6
5
4
2
1
2
4
5
6
6
5
5
5

Chance of Frost

Temperature (°C)

-4
-5
-6
-6
-7
-8
-8
-8
-9
-9
-9
-9
-9
-8
-8
-8
-8
-7
-6
-5
-3
-2
-1
-1

Feels Like (°C)

-10
-10
-11
-11
-11
-12
-12
-12
-12
-12
-12
-12
-13
-12
-11
-11
-12
-11
-11
-9
-7
-6
-5
-5

Dew Point (°C)

-10
-11
-12
-12
-13
-13
-14
-14
-15
-15
-15
-14
-14
-14
-13
-13
-10
-9
-9
-7
-6
-6
-6
-6

Relative Humidity (%)

63
65
66
64
64
66
63
61
61
61
61
64
63
63
65
67
85
87
84
84
82
75
70
70

Pressure (mb)

1023
1024
1025
1027
1028
1029
1030
1030
1031
1031
1031
1032
1032
1032
1032
1032
1032
1031
1031
1031
1029
1028
1027
1027

Ozone (du)

337
335
336
334
334
335
343
347
348
353
362
359
362
365
360
352
353
349
347
347
353
354
363
363

Monday 22

Waxing Crescent 13%

10:20

18:54

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: 07:41, Set: 16:31, Transit: 12:06. Moon - Rise: 10:20, Set: 18:54. Civil Dark: 17:04 - 07:07. Nautical Dark: 17:41 - 06:31. Astro Dark: 18:17 - 05:55

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
99
100
100
100
100
100
99
100
100
100
100
100
100
99
99
100
99
96

Low Clouds (% Sky Obscured)

40
19
4
1
49
96
97
99
100
100
100
98
88
89
92
83
87
99
99
90
89
92
93
89

Medium Clouds (% Sky Obscured)

94
98
100
100
100
95
89
55
70
70
63
94
90
100
100
100
100
100
100
96
98
100
95
90

High Clouds (% Sky Obscured)

100
71
99
100
100
98
78
99
100
100
100
100
99
100
100
50
45
50
0
0
0
0
2
0

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
7
0
0
0
0
0
0
0

Fog (%)

0
0
0
0
0
0
0
0
0
0
0
0
24
0
0
0
0
0
2
2
7
0
0
0

Precipitation Type

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

Precipitation Probability (%)

2
7
8
6
6
5
7
7
4
4
6
8
17
29
51
63
68
86
95
95
79
89
95
91

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.3
0.3
0.2
0.5
1
0.7
0.4
0.6
0.7
0.6

Wind Speed/Direction (mph)

5
4
4
4
3
3
3
3
3
2
2
3
2
1
3
4
6
7
7
8
9
9
8
7

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-6
-6
-6
-6
-6
-6
-5
-5
-5
-5
-5
-5
-5
-4
-5
-5
-4
-4
-4
-4
-4
-4
-4
-4

Dew Point (°C)

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

Relative Humidity (%)

74
78
81
84
87
91
91
92
92
92
96
96
96
98
94
94
94
96
100
98
98
100
98
98

Pressure (mb)

1026
1026
1026
1026
1026
1025
1025
1025
1024
1024
1024
1023
1023
1022
1021
1021
1020
1020
1019
1018
1016
1015
1014
1014

Ozone (du)

356
352
348
347
347
344
340
337
337
328
329
327
326
321
318
315
312
310
310
310
310
315
317
315

Tuesday 23

Waxing Crescent 21%

10:43

20:04

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

Sun - Rise: 07:41, Set: 16:32, Transit: 12:07. Moon - Rise: 10:43, Set: 20:04. Civil Dark: 17:05 - 07:08. Nautical Dark: 17:42 - 06:31. Astro Dark: 18:17 - 05:56

Total Clouds (% Sky Obscured)

94
98
100
98
100
100
100
100
99
89
67
82
69
31
46
39
52
63
59
59
71
54
36
31

Low Clouds (% Sky Obscured)

87
96
100
89
100
100
100
100
98
86
58
74
69
31
46
39
52
63
59
46
39
26
13
0

Medium Clouds (% Sky Obscured)

31
33
25
22
7
0
30
7
0
0
0
0
0
0
0
0
0
0
0
7
27
52
36
31

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
23
44
24
5
3

ISS Passover

Visibility (miles)

0
0
0
0
0
0
1
8
8
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9

Fog (%)

100
12
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
None
None
None
None
None
None
Snow
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

71
54
52
42
24
14
15
39
39
6
5
3
8
1
0
0
0
0
0
0
0
0
0
0

Precipitation Amount (mm)

0.4
0.2
0
0
0
0
0
0
0.1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

0
0
0
-0
0
0
0
-1
-1
-1
-3
-3
-5
-6
-6
-7
-8
-9
-10
-10
-10
-10
-10
-10

Relative Humidity (%)

100
100
98
98
100
98
96
91
91
89
74
75
72
71
72
75
75
72
67
66
64
64
64
64

Pressure (mb)

1014
1013
1013
1013
1013
1013
1012
1012
1013
1013
1014
1015
1016
1018
1020
1022
1024
1025
1026
1027
1027
1027
1027
1028

Ozone (du)

314
320
321
320
321
322
320
319
320
323
322
322
322
323
324
323
321
320
320
322
322
320
317
314

Wednesday 24

Waxing Crescent 21%

11:04

21:14

16 OK
17 OK
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: 07:41, Set: 16:32, Transit: 12:07. Moon - Rise: 11:04, Set: 21:14. Civil Dark: 17:06 - 07:08. Nautical Dark: 17:42 - 06:31. Astro Dark: 18:18 - 05:56

Total Clouds (% Sky Obscured)

23
48
64
75
83
91
94
97
100
100
100
100
98
98
98
91
99
100
98
96
95
90
87
85

Low Clouds (% Sky Obscured)

0
0
0
0
2
0
0
1
5
22
44
64
58
52
46
40
40
35
30
37
36
41
46
52

Medium Clouds (% Sky Obscured)

17
48
62
44
83
75
93
81
100
98
97
95
82
94
81
52
53
45
37
20
2
1
1
0

High Clouds (% Sky Obscured)

4
4
14
37
37
38
56
77
100
100
97
80
63
48
4
31
55
85
84
82
78
72
65
56

ISS Passover

Visibility (miles)

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

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

68
74
73
74
74
73
74
76
76
78
81
81
82
86
86
84
84
84
81
81
81
80
80
81

Pressure (mb)

1028
1029
1028
1029
1028
1027
1027
1026
1025
1024
1023
1022
1021
1019
1019
1018
1018
1018
1019
1018
1017
1017
1017
1017

Ozone (du)

310
310
308
307
310
314
316
316
317
317
319
321
321
319
319
317
310
308
305
303
301
299
298
296

Thursday 25

Waxing Crescent 30%

11:23

22:24

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: 07:42, Set: 16:33, Transit: 12:08. Moon - Rise: 11:23, Set: 22:24. Civil Dark: 17:06 - 07:08. Nautical Dark: 17:43 - 06:32. Astro Dark: 18:18 - 05:56

Total Clouds (% Sky Obscured)

89
92
93
92
91
90
93
96
100
100
100
100
100
100
100
100
100
100
97
94
93
82
66
58

Low Clouds (% Sky Obscured)

55
59
60
62
60
64
64
64
64
58
53
47
35
23
6
35
63
92
91
90
89
82
66
58

Medium Clouds (% Sky Obscured)

39
64
36
72
69
52
78
88
96
97
99
100
100
100
100
92
82
71
48
31
10
15
20
35

High Clouds (% Sky Obscured)

61
64
69
61
56
52
72
86
97
98
99
100
100
100
100
100
100
100
79
59
58
43
21
0

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
2
0
0
0
0
0
0
3
6
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
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Frozen rai
Frozen rai
Frozen rai
Frozen rai
Frozen rai
Light Rain

Precipitation Probability (%)

0
0
1
4
9
3
3
16
25
47
63
95
95
95
95
95
95
95
95
95
95
95
95
95

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
1
1.7
1.1
0.8
0.9
0.8
1
1.4
1.4
1.4
1.8
1.8
1.6

Wind Speed/Direction (mph)

7
7
7
8
7
7
7
6
7
8
9
10
11
10
11
10
11
12
14
13
14
15
15
15

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

83
83
84
84
87
89
92
96
98
98
100
98
100
100
100
100
94
89
86
80
74
69
68
68

Pressure (mb)

1017
1018
1018
1018
1018
1017
1016
1015
1014
1013
1011
1009
1008
1006
1004
1004
1003
1003
1003
1002
1002
1002
1002
1003

Ozone (du)

293
292
290
286
284
280
278
279
279
278
282
284
284
284
283
286
293
300
306
315
323
331
335
338

Friday 26

Waxing Crescent 41%

11:41

23:35

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: 07:42, Set: 16:34, Transit: 12:08. Moon - Rise: 11:41, Set: 23:35. Civil Dark: 17:07 - 07:09. Nautical Dark: 17:44 - 06:32. Astro Dark: 18:19 - 05:57

Total Clouds (% Sky Obscured)

58
58
58
53
53
48
42
42
45
54
62
71
69
73
75
79
86
89
91
93
92
93
95
100

Low Clouds (% Sky Obscured)

58
58
58
53
53
48
42
42
45
54
62
47
52
49
38
39
45
53
70
80
88
93
95
99

Medium Clouds (% Sky Obscured)

55
58
58
53
53
48
37
17
0
0
0
0
12
23
35
38
44
50
39
28
18
31
45
58

High Clouds (% Sky Obscured)

0
0
0
1
2
3
3
2
1
5
9
13
11
2
5
9
20
31
44
32
21
41
64
85

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

Light Rain
Light Rain
None
Snow
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

95
78
32
51
45
24
14
7
0
1
1
0
1
0
0
1
5
9
9
6
0
2
2
1

Precipitation Amount (mm)

1
0.4
0
0.2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

16
14
13
12
11
11
13
12
12
11
10
9
8
8
8
8
7
7
7
6
5
5
4
5

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-6
-5
-6
-5
-11
-10
-10
-11
-11
-12
-14
-15
-15
-15
-15
-16
-16
-16
-15
-15
-16
-15
-12
-11

Dew Point (°C)

-7
-8
-10
-11
-12
-13
-15
-16
-17
-17
-17
-18
-18
-19
-19
-19
-19
-19
-19
-19
-19
-18
-18
-18

Relative Humidity (%)

68
67
65
64
60
56
52
52
51
51
52
52
52
51
52
52
51
50
50
46
43
41
41
41

Pressure (mb)

1004
1005
1006
1007
1009
1010
1012
1013
1014
1016
1017
1018
1019
1020
1021
1021
1022
1022
1022
1022
1021
1021
1021
1021

Ozone (du)

342
348
354
360
366
372
378
382
385
388
383
378
373
366
360
354
353
352
351
349
347
345
344
343

Saturday 27

First Quarter 52%

12:02

00:48

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

Sun - Rise: 07:42, Set: 16:34, Transit: 12:09. Moon - Rise: 12:02, Set: 00:48. Civil Dark: 17:08 - 07:09. Nautical Dark: 17:44 - 06:32. Astro Dark: 18:20 - 05:57

Total Clouds (% Sky Obscured)

100
99
99
99
100
100
100
100
100
97
91
87
91
95
100
100
100
100
97
96
95

Low Clouds (% Sky Obscured)

98
97
96
97
99
100
100
100
99
94
90
87
88
86
85
86
85
89
89
91
92

Medium Clouds (% Sky Obscured)

62
64
67
57
53
42
50
64
75
80
75
65
77
88
100
88
78
58
59
68
75

High Clouds (% Sky Obscured)

94
97
96
97
99
100
100
100
95
90
76
72
81
91
100
83
65
48
58
68
87

ISS Passover

Visibility (miles)

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

Precipitation Probability (%)

4
5
6
6
4
2
22
32
40
41
42
42
49
63
77
80
72
50
51
54
63

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0.1
0.1
0.1
0.1
0.2
0.3
0.5
0.5
0.4
0.1
0
0.2
0.3

Wind Speed/Direction (mph)

5
5
5
5
5
6
6
6
7
7
7
6
6
7
8
10
10
11
11
13
14

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-11
-11
-11
-11
-11
-11
-11
-11
-11
-11
-9
-9
-10
-9
-9
-9
-5
-5
-6
-6
-5

Dew Point (°C)

-17
-17
-16
-15
-14
-13
-13
-10
-9
-6
-6
-5
-4
-3
-2
-1
-1
-1
-1
-2
-3

Relative Humidity (%)

41
43
45
49
52
55
57
66
74
85
87
87
91
92
96
100
96
92
91
84
78

Pressure (mb)

1021
1020
1020
1020
1019
1019
1018
1017
1016
1014
1013
1013
1012
1010
1009
1008
1007
1006
1005
1003
1001

Ozone (du)

342
342
343
343
343
344
345
345
346
346
350
354
358
363
368
373
374
376
378
390
403

Forecast for Yarker, Lennox and Addington County, Canada (44.37,-76.77)

Generated: 21/12/25 15:50:08. Forecast: 21/12/25 to 27/12/25. Timezone: UTC-5.00