Clear Outside v1.0 - International Weather Forecasts For Astronomers

Sunday 21

Waxing Crescent 3%

09:16

17:45

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

Sun - Rise: 07:38, Set: 16:30, Transit: 12:04. Moon - Rise: 09:16, Set: 17:45. Civil Dark: 17:03 - 07:05. Nautical Dark: 17:40 - 06:28. Astro Dark: 18:15 - 05:53

Total Clouds (% Sky Obscured)

58
36
45
65
46
46
73
72
91
91
71
58
58
52
35
26
20
12
9
2
8
13
84
93

Low Clouds (% Sky Obscured)

1
31
45
59
43
43
72
71
91
91
71
58
58
52
35
26
20
12
7
0
0
0
68
75

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
9
17
0
0
0
0
0
0
0
0
1
4
2
0
0
28
45

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)

9
9
9
7
7
7
8
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
12
7
15
8
17
12
23
14
3
1
0
0
0
0
0
0
0
0
0
0
1

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)

16
15
13
14
15
16
16
15
15
14
13
14
14
13
12
11
10
9
8
8
7
7
6
6

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-9
-9
-10
-11
-11
-11
-10
-9
-9
-8
-9
-9
-10
-10
-11
-11
-12
-12
-12
-12
-12
-13
-13
-13

Dew Point (°C)

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

Relative Humidity (%)

62
62
68
69
66
66
72
65
58
58
59
60
62
63
63
63
62
62
60
60
59
59
58
59

Pressure (mb)

1010
1012
1014
1015
1016
1017
1018
1018
1019
1020
1021
1022
1024
1025
1027
1028
1029
1029
1030
1030
1031
1032
1032
1032

Ozone (du)

327
327
330
333
333
332
328
329
330
337
340
334
334
335
336
337
335
339
344
352
359
360
361
360

Monday 22

Waxing Crescent 7%

09:51

18:53

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: 07:39, Set: 16:31, Transit: 12:05. Moon - Rise: 09:51, Set: 18:53. Civil Dark: 17:04 - 07:06. Nautical Dark: 17:40 - 06:29. Astro Dark: 18:16 - 05:54

Total Clouds (% Sky Obscured)

96
100
99
98
98
99
99
92
82
79
80
100
100
100
100
100
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

78
83
90
53
72
79
82
69
69
69
68
70
96
96
96
100
87
97
94
100
100
87
93
84

Medium Clouds (% Sky Obscured)

48
57
79
53
50
96
93
77
39
3
4
100
84
97
100
100
100
100
99
100
100
98
37
57

High Clouds (% Sky Obscured)

0
0
0
0
0
3
3
25
8
58
60
50
100
100
100
100
69
58
100
100
100
100
100
100

ISS Passover

Visibility (miles)

9
8
9
9
9
1
4
0
9
8
9
9
9
9
9
9
4
1
2
9
2
8
6
4

Fog (%)

0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
6

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
Snow

Precipitation Probability (%)

3
5
17
25
17
25
29
16
4
4
2
0
1
3
13
16
24
19
20
25
23
23
41
51

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
0.2

Wind Speed/Direction (mph)

5
4
2
2
3
4
5
4
5
7
9
7
6
5
5
6
6
6
5
4
3
3
3
2

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

-14
-12
-11
-11
-11
-10
-8
-7
-7
-5
-4
-4
-4
-5
-5
-4
-3
-1
-2
-2
-2
-2
-2
-2

Relative Humidity (%)

63
74
75
75
76
77
80
85
81
82
83
83
83
79
77
80
89
98
96
96
94
92
94
94

Pressure (mb)

1032
1032
1032
1032
1032
1032
1031
1030
1028
1028
1027
1027
1027
1026
1026
1026
1025
1025
1025
1024
1024
1024
1023
1023

Ozone (du)

360
360
353
350
346
343
346
348
353
356
359
358
356
358
353
348
347
344
343
339
330
327
326
324

Tuesday 23

Waxing Crescent 13%

10:19

20:03

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: 07:39, Set: 16:31, Transit: 12:05. Moon - Rise: 10:19, Set: 20:03. Civil Dark: 17:04 - 07:06. Nautical Dark: 17:41 - 06:29. Astro Dark: 18:16 - 05:54

Total Clouds (% Sky Obscured)

100
100
100
100
100
98
99
96
95
95
98
98
96
97
96
99
100
100
100
98
83
83
80
59

Low Clouds (% Sky Obscured)

95
96
89
88
77
87
81
83
80
83
94
94
87
92
91
98
100
100
100
96
83
78
69
59

Medium Clouds (% Sky Obscured)

100
100
100
100
100
96
96
89
80
81
80
77
82
63
64
63
69
80
66
40
25
12
0
0

High Clouds (% Sky Obscured)

42
55
29
60
60
60
0
0
23
11
0
0
0
0
0
0
0
0
0
0
0
2
0
1

ISS Passover

Visibility (miles)

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

Fog (%)

4
1
0
0
0
0
0
0
0
2
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
None
None
None
None
None
None
None
None

Precipitation Probability (%)

51
68
67
52
49
47
47
41
58
69
53
50
58
61
54
45
37
31
22
25
28
31
12
9

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

-1
-1
-1
-1
-1
-0
0
0
0
0
0
-0
-0
-1
-1
-1
0
1
1
1
1
1
1
1

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

94
92
92
94
94
92
91
89
91
98
98
98
98
100
100
98
98
96
96
96
94
89
91
84

Pressure (mb)

1022
1022
1022
1022
1021
1021
1020
1019
1018
1018
1018
1017
1017
1017
1017
1017
1016
1016
1016
1016
1016
1017
1018
1019

Ozone (du)

325
319
318
312
311
309
310
312
318
321
324
328
330
329
331
333
332
327
326
322
319
318
318
318

Wednesday 24

Waxing Crescent 21%

10:42

21:13

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: 07:39, Set: 16:32, Transit: 12:06. Moon - Rise: 10:42, Set: 21:13. Civil Dark: 17:05 - 07:06. Nautical Dark: 17:42 - 06:30. Astro Dark: 18:17 - 05:54

Total Clouds (% Sky Obscured)

67
74
68
79
77
70
68
77
83
92
98
99
99
100
100
100
100
100
100
100
99
99
97
97

Low Clouds (% Sky Obscured)

67
74
68
79
72
64
58
50
53
57
60
45
30
15
39
57
75
72
71
68
58
47
39
49

Medium Clouds (% Sky Obscured)

0
0
0
0
0
9
20
31
64
76
88
82
79
87
88
86
98
98
99
99
98
95
45
45

High Clouds (% Sky Obscured)

3
2
2
7
16
7
1
8
1
10
15
16
21
27
40
66
95
97
98
100
66
36
7
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
3
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 (%)

6
4
5
4
1
2
0
0
0
0
0
0
0
0
1
1
2
5
7
5
13
6
6
5

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

-2
-3
-3
-3
-3
-3
-4
-5
-6
-6
-6
-5
-5
-6
-6
-6
-6
-6
-5
-3
-2
-2
-2
-2

Relative Humidity (%)

81
81
84
84
83
80
75
70
66
62
67
72
76
75
74
75
75
74
77
84
86
89
88
87

Pressure (mb)

1020
1021
1023
1024
1025
1026
1026
1026
1025
1025
1026
1026
1026
1025
1025
1024
1024
1023
1022
1020
1019
1019
1018
1017

Ozone (du)

318
317
317
316
313
311
309
308
306
305
306
307
308
311
311
311
310
311
309
311
313
312
313
313

Thursday 25

Waxing Crescent 30%

11:02

22:23

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: 07:40, Set: 16:32, Transit: 12:06. Moon - Rise: 11:02, Set: 22:23. Civil Dark: 17:06 - 07:07. Nautical Dark: 17:42 - 06:30. Astro Dark: 18:17 - 05:55

Total Clouds (% Sky Obscured)

85
81
95
94
90
96
98
100
100
99
99
98
97
96
98
99
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

63
81
82
81
80
86
91
97
89
82
74
64
55
46
49
55
61
43
24
6
29
51
74
82

Medium Clouds (% Sky Obscured)

67
28
21
15
9
17
30
40
33
26
41
78
88
77
85
92
100
98
95
93
96
98
100
100

High Clouds (% Sky Obscured)

18
23
14
8
19
73
88
100
99
98
97
90
93
90
94
98
100
100
100
100
100
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
8
6
3
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
Light Rain

Precipitation Probability (%)

3
1
4
5
0
2
2
2
6
5
13
4
5
4
7
10
10
12
17
21
24
32
46
95

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
0.6

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

0
0
-1
-1
0
0
1
1
1
1
0
0
0
0
0
-0
-0
-0
-0
-0
-0
-1
0
0

Feels Like (°C)

-3
-3
-4
-4
-4
-3
-3
-3
-3
-3
-3
-3
-3
-4
-4
-4
-4
-4
-4
-4
-4
-4
-3
-3

Dew Point (°C)

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

Relative Humidity (%)

86
86
89
87
86
83
83
81
83
84
86
88
88
87
89
91
94
94
96
96
98
98
100
100

Pressure (mb)

1017
1017
1017
1017
1018
1018
1018
1017
1017
1017
1017
1017
1017
1017
1017
1016
1015
1015
1013
1012
1011
1009
1007
1006

Ozone (du)

313
312
311
308
306
303
300
299
295
294
295
295
292
289
287
286
284
283
282
281
280
281
281
282

Friday 26

Waxing Crescent 41%

11:21

23:34

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: 07:40, Set: 16:33, Transit: 12:07. Moon - Rise: 11:21, Set: 23:34. Civil Dark: 17:06 - 07:07. Nautical Dark: 17:43 - 06:30. Astro Dark: 18:18 - 05:55

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
99
99
95
91
88
72
59
44
48
52
65
71
73
72
66
61
50
50

Low Clouds (% Sky Obscured)

90
98
99
99
100
100
99
99
93
86
79
72
59
44
40
41
45
63
73
72
66
61
50
50

Medium Clouds (% Sky Obscured)

100
100
97
92
87
71
58
50
43
45
43
26
13
0
0
0
0
0
0
0
0
0
0
14

High Clouds (% Sky Obscured)

100
100
95
89
84
57
31
1
32
65
88
62
30
1
1
1
1
1
0
0
1
1
1
3

ISS Passover

Visibility (miles)

0
0
0
3
6
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
Light Rain
Moderate Rain
Light Rain
Frozen rai
Frozen rai
Frozen rai
Frozen rai
Frozen rai
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

95
95
95
95
95
95
95
95
95
86
43
34
25
11
8
4
1
2
1
2
0
2
0
0

Precipitation Amount (mm)

1.2
2
2.4
2.5
2.4
2.3
2.2
2.1
1.3
0.5
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

9
9
9
11
12
13
14
15
16
16
15
15
15
15
14
14
12
12
11
10
10
9
9
8

Chance of Frost

Temperature (°C)

-0
-0
-0
0
0
0
-1
-2
-2
-4
-5
-6
-7
-8
-9
-10
-10
-11
-11
-12
-12
-12
-12
-12

Feels Like (°C)

-3
-3
-3
-3
-3
-3
-3
-4
-3
-8
-8
-10
-10
-10
-11
-16
-16
-15
-15
-16
-15
-18
-17
-17

Dew Point (°C)

-0
-0
-0
-1
-1
-1
-3
-5
-7
-9
-10
-12
-13
-14
-16
-17
-17
-18
-19
-19
-19
-19
-19
-19

Relative Humidity (%)

100
100
100
96
92
89
83
77
71
68
66
64
62
60
57
56
55
54
54
54
54
54
55
55

Pressure (mb)

1004
1003
1001
1001
1000
1000
1001
1001
1002
1004
1006
1009
1011
1013
1016
1017
1019
1020
1021
1023
1024
1024
1025
1026

Ozone (du)

282
283
283
289
294
299
306
313
320
323
326
329
339
348
357
364
370
377
379
380
382
384
386
388

Saturday 27

First Quarter 52%

11:40

00:47

05 Bad
06 Bad
07 OK
08 OK
09 OK
10 OK
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: 07:40, Set: 16:34, Transit: 12:07. Moon - Rise: 11:40, Set: 00:47. Civil Dark: 17:07 - 07:07. Nautical Dark: 17:44 - 06:31. Astro Dark: 18:19 - 05:55

Total Clouds (% Sky Obscured)

49
51
45
40
40
47
55
65
83
93
100
100
100
100
100
100
100
100
100
99

Low Clouds (% Sky Obscured)

49
51
45
40
40
47
55
62
65
71
75
72
81
84
91
94
95
91
85
79

Medium Clouds (% Sky Obscured)

24
36
34
20
19
17
23
26
53
78
100
98
96
94
95
96
96
97
97
97

High Clouds (% Sky Obscured)

0
0
0
0
0
12
24
36
39
51
60
61
63
64
65
66
67
68
55
43

ISS Passover

Visibility (miles)

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

Precipitation Type

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

Precipitation Probability (%)

0
0
0
0
0
0
0
0
5
5
5
5
2
0
1
2
2
27
37
43

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-17
-17
-17
-17
-17
-16
-16
-16
-15
-13
-13
-12
-13
-13
-13
-12
-12
-11
-11
-11

Dew Point (°C)

-19
-19
-19
-19
-20
-19
-19
-19
-19
-18
-18
-18
-17
-17
-16
-15
-14
-13
-11
-10

Relative Humidity (%)

55
56
56
55
53
52
49
47
45
46
47
47
48
49
50
52
54
56
59
61

Pressure (mb)

1027
1027
1028
1028
1029
1029
1029
1028
1027
1027
1026
1026
1025
1025
1024
1023
1022
1021
1020
1019

Ozone (du)

388
389
389
384
379
374
370
366
363
360
357
355
351
346
342
342
342
342
341
341

Forecast for Kingston, Canada (44.23,-76.49)

Generated: 21/12/25 05:18:44. Forecast: 21/12/25 to 27/12/25. Timezone: UTC-5.00