Clear Outside v1.0 - International Weather Forecasts For Astronomers

Wednesday 17

Waning Crescent 2%

06:22

14:47

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

Sun - Rise: 07:18, Set: 16:16, Transit: 11:47. Moon - Rise: 06:22, Set: 14:47. Civil Dark: 16:48 - 06:45. Nautical Dark: 17:25 - 06:09. Astro Dark: 17:59 - 05:34

Total Clouds (% Sky Obscured)

98
88
86
82
52
48
21
41
30
1
2
4
17
38
40
11
29
5
21
9
12
67
100
100

Low Clouds (% Sky Obscured)

55
40
49
57
51
47
21
41
30
1
2
1
1
1
5
3
16
1
0
0
0
0
0
0

Medium 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

High Clouds (% Sky Obscured)

65
5
0
0
0
0
0
0
0
0
1
3
17
38
40
5
11
3
21
7
11
67
100
100

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
8
7
9
6
9
9
9
9
9
9
9

Fog (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
5
23
33
30
52
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
10
2
2
0
0
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)

10
10
11
12
12
12
11
12
11
6
4
3
2
1
1
3
1
1
2
3
5
6
6
6

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

80
85
82
82
82
79
72
74
74
80
86
92
94
96
94
94
94
92
82
75
67
62
64
65

Pressure (mb)

1007
1008
1009
1011
1013
1014
1016
1018
1019
1020
1021
1022
1023
1023
1024
1026
1026
1026
1026
1026
1025
1024
1023
1022

Ozone (du)

295
298
304
306
307
314
316
314
316
314
312
311
312
316
316
314
312
307
304
301
298
299
299
297

Thursday 18

Waning Crescent 0%

07:20

No Set

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
05 Bad
06 Bad
07 Bad
08 Bad
09 Bad
10 Bad
11 Bad
12 Bad
13 Bad
14 Bad

Sun - Rise: 07:18, Set: 16:16, Transit: 11:48. Moon - Rise: 07:20, Set: No Set. Civil Dark: 16:49 - 06:46. Nautical Dark: 17:25 - 06:10. Astro Dark: 18:00 - 05:35

Total Clouds (% Sky Obscured)

100
100
53
93
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
79
53

Low Clouds (% Sky Obscured)

0
36
53
64
89
100
100
100
100
100
100
100
100
100
100
96
95
96
99
96
98
88
79
53

Medium Clouds (% Sky Obscured)

0
0
0
24
59
86
99
78
93
97
100
100
100
100
100
100
100
100
96
100
100
85
75
7

High Clouds (% Sky Obscured)

100
100
6
74
92
70
61
85
79
59
100
100
42
100
100
100
100
100
96
0
27
3
35
25

ISS Passover

Visibility (miles)

9
9
9
9
8
9
8
4
1
0
0
0
0
0
0
6
5
1
2
2
2
1
3
9

Fog (%)

0
0
0
0
0
0
0
4
43
94
98
100
98
74
74
71
66
49
0
0
0
0
0
0

Precipitation Type

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

Precipitation Probability (%)

0
0
0
0
0
0
0
14
21
9
62
65
51
38
70
93
95
95
95
95
95
95
84
9

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0.3
0.4
0
0
0.4
0.5
2
3.5
4
1.7
2
1.7
0.2
0

Wind Speed/Direction (mph)

7
6
5
6
7
7
8
8
7
7
6
5
3
4
6
13
17
17
16
16
12
10
15
10

Chance of Frost

Temperature (°C)

2
1
0
0
1
1
2
2
3
4
4
4
4
4
6
7
9
11
11
11
11
11
8
6

Feels Like (°C)

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

Dew Point (°C)

-3
-2
-2
-1
-1
1
1
2
3
3
4
4
4
4
6
6
8
10
10
10
10
10
6
4

Relative Humidity (%)

69
80
89
92
92
94
94
94
98
98
100
100
100
100
100
90
88
90
91
92
93
96
87
86

Pressure (mb)

1022
1022
1022
1022
1021
1020
1018
1017
1016
1014
1013
1011
1009
1007
1005
1002
1000
997
996
994
991
990
991
993

Ozone (du)

297
295
295
295
295
296
296
296
295
293
294
294
295
294
293
291
294
297
298
301
302
310
314
324

Friday 19

New Moon 1%

08:12

15:34

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 OK
04 OK
05 Good
06 Good
07 Good
08 Good
09 Good
10 Good
11 Good
12 OK
13 OK
14 Bad

Sun - Rise: 07:19, Set: 16:17, Transit: 11:48. Moon - Rise: 08:12, Set: 15:34. Civil Dark: 16:49 - 06:46. Nautical Dark: 17:25 - 06:10. Astro Dark: 18:00 - 05:36

Total Clouds (% Sky Obscured)

75
43
65
70
69
71
57
36
52
56
57
58
20
30
4
3
2
0
0
0
2
30
30
81

Low Clouds (% Sky Obscured)

75
21
63
70
65
71
57
36
52
56
57
58
16
30
4
3
2
0
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

70
23
19
19
47
49
26
11
0
3
0
0
0
0
0
0
0
0
0
0
0
3
25
46

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
2
30
30
81

ISS Passover

Visibility (miles)

9
9
9
2
9
9
9
8
6
5
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 (%)

22
44
39
41
12
12
7
15
14
4
3
2
2
3
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)

7
8
9
11
16
14
14
15
16
14
14
13
15
14
14
13
12
10
9
8
7
6
4
4

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

88
86
89
93
77
76
75
78
76
75
72
73
66
66
67
65
65
65
60
53
48
48
49
49

Pressure (mb)

993
993
995
996
998
999
1000
1001
1003
1004
1005
1008
1010
1012
1014
1015
1016
1017
1018
1019
1020
1020
1019
1019

Ozone (du)

331
340
351
358
364
364
370
376
382
383
389
384
370
367
367
370
369
363
354
349
343
340
343
338

Saturday 20

Waxing Crescent 3%

08:56

16:30

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

Sun - Rise: 07:19, Set: 16:17, Transit: 11:49. Moon - Rise: 08:56, Set: 16:30. Civil Dark: 16:50 - 06:47. Nautical Dark: 17:26 - 06:11. Astro Dark: 18:01 - 05:36

Total Clouds (% Sky Obscured)

100
93
100
100
100
100
100
100
100
100
100
100
100
83
64
42
44
28
32
32
30
35
41
31

Low Clouds (% Sky Obscured)

0
0
24
51
70
80
58
80
13
68
90
94
94
83
64
42
44
15
18
17
16
35
41
19

Medium Clouds (% Sky Obscured)

100
91
95
90
95
98
99
97
94
90
93
96
100
82
55
42
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

100
60
100
96
100
100
100
100
100
100
100
100
100
68
32
0
0
0
0
0
0
0
0
0

ISS Passover

Visibility (miles)

9
9
9
9
9
3
9
9
9
2
7
1
1
4
8
8
9
9
9
9
9
9
7
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
Snow
Snow
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

0
0
0
0
16
9
5
7
23
35
34
57
58
35
23
21
18
9
0
3
8
21
17
28

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0.3
0.1
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

4
4
4
5
5
7
8
9
9
9
9
10
9
8
7
6
6
6
9
12
13
13
14
15

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

-10
-8
-7
-8
-7
-8
-8
-8
-6
-5
-5
-3
-1
-1
-1
-1
-2
-2
-4
-3
-4
-5
-6
-7

Relative Humidity (%)

52
62
69
65
67
62
62
64
72
81
71
80
91
89
89
89
84
80
69
66
66
64
62
59

Pressure (mb)

1019
1019
1019
1019
1018
1016
1015
1014
1013
1012
1011
1011
1010
1010
1009
1009
1009
1009
1008
1009
1009
1009
1009
1010

Ozone (du)

332
326
322
322
322
321
319
321
322
321
318
318
316
319
322
325
329
332
334
338
339
345
351
353

Sunday 21

Waxing Crescent 7%

09:31

17:33

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

Sun - Rise: 07:20, Set: 16:18, Transit: 11:49. Moon - Rise: 09:31, Set: 17:33. Civil Dark: 16:50 - 06:47. Nautical Dark: 17:26 - 06:11. Astro Dark: 18:01 - 05:36

Total Clouds (% Sky Obscured)

32
49
58
56
39
42
26
29
14
7
2
7
17
21
17
3
8
15
20
20
21
24
27
27

Low Clouds (% Sky Obscured)

22
49
56
56
37
38
17
16
9
4
1
4
11
10
9
1
4
8
11
6
5
3
1
0

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
6
12
21
27
27

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
7
6
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 (%)

27
24
21
3
3
4
3
5
5
0
0
0
0
1
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)

16
14
13
13
12
12
12
12
13
12
13
12
12
12
12
11
9
9
10
10
10
10
11
9

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

50
59
72
63
60
65
67
67
65
63
64
63
63
63
63
62
62
60
58
56
54
51
48
51

Pressure (mb)

1011
1012
1014
1015
1016
1017
1018
1018
1019
1020
1022
1023
1024
1025
1026
1026
1027
1028
1029
1029
1029
1029
1028
1028

Ozone (du)

350
352
355
355
358
360
363
362
360
363
366
365
359
359
359
360
360
358
355
352
351
351
350
350

Monday 22

Waxing Crescent 13%

10:00

18:40

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

Sun - Rise: 07:20, Set: 16:18, Transit: 11:50. Moon - Rise: 10:00, Set: 18:40. Civil Dark: 16:51 - 06:48. Nautical Dark: 17:27 - 06:12. Astro Dark: 18:02 - 05:37

Total Clouds (% Sky Obscured)

23
25
23
20
22
25
27
27
32
36
34
32
29
41
37
43
42
46
43
50
63
76
84
92

Low Clouds (% Sky Obscured)

0
7
15
20
22
25
27
27
32
36
34
32
29
41
37
36
42
46
43
46
32
19
14
9

Medium Clouds (% Sky Obscured)

23
6
4
4
4
4
4
0
0
4
3
2
1
1
2
4
19
25
20
17
18
20
44
72

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
6
11
14
41
46
43
50
63
76
75
74

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
3
4
4
7
8
5
8
7
2
3
2
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

-12
-12
-12
-12
-12
-12
-13
-13
-13
-13
-13
-13
-12
-13
-12
-12
-12
-12
-12
-12
-13
-13
-13
-13

Relative Humidity (%)

54
56
58
59
60
60
59
61
62
64
66
68
71
71
74
75
75
68
62
56
51
47
42
45

Pressure (mb)

1029
1029
1029
1029
1030
1030
1029
1029
1029
1029
1029
1029
1029
1029
1030
1030
1030
1030
1030
1030
1029
1027
1026
1026

Ozone (du)

349
349
347
345
343
342
341
340
339
338
337
334
331
328
327
326
325
327
329
330
331
333
334
335

Tuesday 23

Waxing Crescent 12%

10:24

19:49

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
05 Bad
06 Bad
07 Bad
08 Bad
09 OK
10 OK
11 OK
12 OK

Sun - Rise: 07:20, Set: 16:19, Transit: 11:50. Moon - Rise: 10:24, Set: 19:49. Civil Dark: 16:51 - 06:48. Nautical Dark: 17:27 - 06:12. Astro Dark: 18:02 - 05:37

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
99
100
98
97
97
90
83
76
63
48
30
30
31
36

Low Clouds (% Sky Obscured)

4
16
27
37
55
74
95
95
97
99
98
96
94
83
73
63
50
36
23
23
29
34

Medium Clouds (% Sky Obscured)

100
100
100
100
100
100
99
98
97
96
89
84
79
68
52
28
19
8
0
0
0
0

High Clouds (% Sky Obscured)

75
70
78
88
74
59
46
45
40
37
26
12
0
0
0
0
0
0
0
15
29
36

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
6
4
1
1
1
1
2
4
5
6
8
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

Precipitation Type

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

Precipitation Probability (%)

0
0
1
1
30
43
54
60
62
64
62
58
52
47
39
24
26
22
2
5
6
1

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

48
51
54
55
57
58
59
58
64
70
78
82
87
92
94
94
94
85
76
70
68
67

Pressure (mb)

1025
1025
1024
1024
1023
1022
1021
1020
1019
1018
1017
1016
1016
1015
1015
1015
1015
1015
1016
1016
1016
1016

Ozone (du)

336
337
338
339
340
339
338
338
341
344
347
347
347
347
349
350
352
350
347
345
340
335

Forecast for Chester, Windsor, United States of America (43.26,-72.60)

Generated: 17/12/25 15:31:46. Forecast: 17/12/25 to 23/12/25. Timezone: UTC-5.00