Clear Outside v1.0 - International Weather Forecasts For Astronomers

Sunday 14

Waning Crescent 18%

03:10

13:14

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

Sun - Rise: 07:16, Set: 16:15, Transit: 11:46. Moon - Rise: 03:10, Set: 13:14. Civil Dark: 16:48 - 06:43. Nautical Dark: 17:24 - 06:07. Astro Dark: 17:58 - 05:33

Total Clouds (% Sky Obscured)

20
21
16
9
0
1
2
8
2
5
8
1
2
4
6
29
32
88
46
29
30
30
35
10

Low Clouds (% Sky Obscured)

1
0
1
0
0
1
2
8
1
5
8
0
2
2
1
0
26
25
0
0
0
0
2
3

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
3
10
75
46
19
11
5
5
2

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
3
29
8
24
46
29
30
30
35
4

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
1
1
1
2
1
2
1
0
0
0
0
0
0
0
0
0
2
4
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)

10
9
9
8
7
8
9
7
8
7
7
7
5
4
5
8
9
11
11
11
11
10
7
4

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-13
-14
-14
-16
-16
-17
-18
-17
-17
-17
-18
-17
-17
-16
-15
-14
-14
-13
-14
-14
-13
-13
-13
-12

Dew Point (°C)

-13
-14
-15
-17
-17
-18
-18
-18
-18
-18
-18
-18
-18
-18
-17
-16
-15
-15
-14
-13
-12
-13
-12
-10

Relative Humidity (%)

77
72
76
74
69
68
70
71
70
71
70
68
72
72
66
61
61
60
63
67
67
67
74
87

Pressure (mb)

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

Ozone (du)

343
340
339
333
333
339
342
346
360
365
354
339
336
309
306
304
303
300
293
292
295
289
289
299

Monday 15

Waning Crescent 11%

04:14

13:39

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

Sun - Rise: 07:16, Set: 16:16, Transit: 11:46. Moon - Rise: 04:14, Set: 13:39. Civil Dark: 16:48 - 06:44. Nautical Dark: 17:24 - 06:08. Astro Dark: 17:59 - 05:33

Total Clouds (% Sky Obscured)

10
17
30
64
69
58
100
100
98
71
68
21
10
3
5
8
52
47
45
84
65
60
77
89

Low Clouds (% Sky Obscured)

2
3
4
23
32
20
18
13
19
17
12
12
10
3
4
4
20
34
41
26
6
10
3
4

Medium Clouds (% Sky Obscured)

5
12
30
60
63
49
58
49
75
63
59
5
0
0
0
0
0
12
0
0
21
25
77
89

High Clouds (% Sky Obscured)

3
1
0
0
2
26
100
62
33
50
33
0
0
0
0
2
40
2
2
66
41
25
49
35

ISS Passover

Visibility (miles)

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

Fog (%)

0
0
0
0
0
0
0
0
1
0
0
0
1
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 (%)

2
4
5
4
3
4
2
2
2
2
1
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)

3
3
3
3
3
4
3
3
4
3
3
3
3
3
3
3
4
5
5
5
4
3
3
3

Chance of Frost

Temperature (°C)

-9
-10
-10
-9
-9
-9
-10
-10
-10
-10
-11
-11
-11
-11
-9
-7
-5
-4
-3
-3
-3
-4
-6
-6

Feels Like (°C)

-11
-12
-12
-11
-11
-11
-12
-14
-14
-14
-14
-15
-13
-13
-11
-9
-7
-7
-6
-5
-7
-7
-9
-9

Dew Point (°C)

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

Relative Humidity (%)

90
90
90
90
90
90
90
90
90
90
90
86
88
85
77
70
67
66
65
65
71
87
92
87

Pressure (mb)

1019
1019
1019
1019
1019
1019
1019
1020
1020
1020
1020
1021
1021
1022
1022
1023
1021
1020
1020
1019
1019
1019
1019
1019

Ozone (du)

301
301
311
314
321
320
333
334
332
322
339
357
336
315
324
320
312
305
301
294
284
277
276
274

Tuesday 16

Waning Crescent 6%

05:19

14:10

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
18 Bad

Sun - Rise: 07:17, Set: 16:16, Transit: 11:47. Moon - Rise: 05:19, Set: 14:10. Civil Dark: 16:48 - 06:45. Nautical Dark: 17:25 - 06:09. Astro Dark: 17:59 - 05:34

Total Clouds (% Sky Obscured)

100
100
100
99
66
83
69
89
92
75
55
63
58
48
91
85
97
100
78
95
92
98
79
96

Low Clouds (% Sky Obscured)

3
6
3
3
3
3
3
4
20
20
21
21
17
3
7
21
23
28
30
49
47
92
75
93

Medium Clouds (% Sky Obscured)

100
100
92
95
20
37
29
74
59
62
53
59
58
48
51
75
59
76
78
95
82
31
13
3

High Clouds (% Sky Obscured)

100
100
98
97
58
62
48
20
24
24
4
4
4
32
72
55
70
67
52
84
89
39
21
0

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
8
8
8
8
8
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
1
1
0
0
4
0
0
0
0
0
3
2

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

87
90
89
90
89
87
89
89
90
92
94
92
90
89
82
77
71
72
73
73
77
77
80
76

Pressure (mb)

1018
1018
1017
1017
1016
1015
1014
1014
1014
1013
1012
1012
1011
1011
1010
1010
1009
1008
1008
1008
1009
1010
1011
1012

Ozone (du)

274
274
271
269
268
266
266
265
264
264
265
264
264
265
267
269
270
274
285
287
291
299
308
313

Wednesday 17

Waning Crescent 2%

06:22

14:47

19 Bad
20 Bad
21 Bad
22 OK
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
16 Bad
17 Bad
18 Bad

Sun - Rise: 07:18, Set: 16:16, Transit: 11:47. Moon - Rise: 06:22, Set: 14:47. Civil Dark: 16:49 - 06:45. Nautical Dark: 17:25 - 06:09. Astro Dark: 18:00 - 05:34

Total Clouds (% Sky Obscured)

92
49
70
21
16
16
34
55
68
56
65
62
68
65
76
79
92
100
99
98
97
98
99
100

Low Clouds (% Sky Obscured)

91
46
70
13
6
4
3
4
11
11
20
21
16
19
22
18
11
7
17
29
76
95
96
100

Medium Clouds (% Sky Obscured)

2
1
0
0
0
0
0
0
0
0
3
50
45
25
29
1
0
0
7
14
22
27
28
28

High Clouds (% Sky Obscured)

0
0
0
0
0
0
24
49
68
49
27
5
16
24
36
57
78
100
92
84
76
52
28
5

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 (%)

2
6
2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
14
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

77
77
76
74
70
70
70
74
89
92
92
94
89
87
79
74
66
63
64
68
70
77
83
89

Pressure (mb)

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

Ozone (du)

317
321
328
332
332
321
313
313
313
316
319
320
321
321
320
321
319
314
310
311
311
309
309
307

Thursday 18

Waning Crescent 0%

07:20

15:34

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
18 Bad

Sun - Rise: 07:18, Set: 16:17, Transit: 11:48. Moon - Rise: 07:20, Set: 15:34. Civil Dark: 16:49 - 06:46. Nautical Dark: 17:25 - 06:10. Astro Dark: 18:00 - 05:35

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
96
94
90
81
66
46
49
46
47

Low Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
98
97
96
94
92
90
88
87
88
71
51
30
31
33
35

Medium Clouds (% Sky Obscured)

35
43
51
71
90
100
92
85
77
85
93
100
100
100
100
92
85
84
81
65
45
7
2
0

High Clouds (% Sky Obscured)

3
6
5
19
40
53
42
40
35
63
83
100
100
100
100
91
83
73
49
24
1
2
1
0

ISS Passover

Visibility (miles)

9
9
8
0
0
0
0
0
0
6
2
2
2
4
7
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
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Moderate Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Very Light Rain
None
None
None
None

Precipitation Probability (%)

0
0
1
12
58
71
68
90
90
95
95
95
95
95
95
95
95
95
95
83
50
49
34
8

Precipitation Amount (mm)

0
0
0
0
0
0
0
0.5
0.4
1.3
2.1
2.1
2.6
2.3
1.7
1.6
1.6
1.7
0.4
0.3
0
0
0
0

Wind Speed/Direction (mph)

6
7
8
8
7
6
5
6
7
11
11
12
10
10
12
14
14
14
15
13
11
11
11
12

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-2
-1
-1
-0
1
2
2
2
3
5
6
6
7
8
9
9
9
9
9
6
4
4
3
2

Dew Point (°C)

1
2
2
3
4
4
5
5
6
7
8
9
9
8
7
5
5
5
6
5
3
1
0
-2

Relative Humidity (%)

93
94
96
96
96
98
98
98
100
88
93
93
95
90
87
82
81
80
77
77
75
74
72
72

Pressure (mb)

1019
1017
1015
1014
1013
1011
1010
1008
1006
1004
1002
1001
999
998
997
997
995
994
993
994
996
997
999
1001

Ozone (du)

306
304
305
307
310
312
312
313
315
317
319
320
321
324
328
331
338
345
352
353
354
355
362
370

Friday 19

New Moon 1%

08:12

16:30

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

Sun - Rise: 07:19, Set: 16:17, Transit: 11:48. Moon - Rise: 08:12, Set: 16:30. Civil Dark: 16:50 - 06:46. Nautical Dark: 17:26 - 06:10. Astro Dark: 18:01 - 05:36

Total Clouds (% Sky Obscured)

41
35
29
24
21
18
24
30
35
37
16
10
5
4
1
28
57
95
92
89
86
91
93
93

Low Clouds (% Sky Obscured)

38
35
29
24
21
18
24
30
35
37
16
10
5
4
0
0
0
0
0
1
1
4
9
21

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
20
38
56
56
52
49
66
83
93

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
5
18
45
71
82
76
67
53

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
7
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
None
Snow

Precipitation Probability (%)

20
13
2
8
9
2
8
11
10
12
10
0
0
0
0
0
0
0
0
0
0
23
33
40

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
0.1

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

1
-7
-8
-9
-9
-10
-11
-13
-13
-14
-14
-13
-14
-13
-12
-11
-11
-11
-11
-9
-8
-8
-8
-9

Dew Point (°C)

-4
-6
-7
-9
-10
-12
-14
-15
-16
-17
-17
-18
-19
-19
-19
-19
-19
-18
-18
-16
-15
-14
-14
-14

Relative Humidity (%)

70
68
67
65
62
60
56
54
51
48
47
46
44
41
39
37
36
35
34
39
44
49
48
47

Pressure (mb)

1002
1003
1004
1005
1007
1008
1009
1010
1012
1013
1015
1016
1018
1019
1020
1022
1021
1021
1021
1021
1021
1021
1021
1021

Ozone (du)

377
380
384
388
384
380
377
370
364
357
356
354
353
351
348
346
341
336
331
327
323
319
317
315

Saturday 20

Waxing Crescent 3%

08:56

17:33

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: 16:18, Transit: 11:49. Moon - Rise: 08:56, 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)

95
97
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

32
34
41
48
57
70
81
89
98
95
93
89
91
94
94
100
100
100

Medium Clouds (% Sky Obscured)

95
97
100
100
100
100
100
100
100
100
100
100
100
99
98
98
99
99

High Clouds (% Sky Obscured)

56
75
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100

ISS Passover

Visibility (miles)

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

Fog (%)

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
Ice pellet
Ice pellet
Ice pellet
None
None
None
None
None
None
None

Precipitation Probability (%)

33
24
13
20
28
41
56
71
86
79
59
25
28
31
34
29
25
29

Precipitation Amount (mm)

0
0
0
0
0
0.2
0.3
0.4
0.6
0.5
0.2
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-9
-8
-9
-9
-9
-9
-9
-8
-8
-8
-7
-7
-7
-4
-4
-3
-3
-3

Dew Point (°C)

-14
-14
-14
-13
-11
-9
-6
-5
-4
-4
-3
-2
-2
-2
-1
0
0
1

Relative Humidity (%)

46
48
49
50
60
72
86
86
84
84
84
86
86
89
92
94
94
96

Pressure (mb)

1021
1020
1020
1019
1018
1017
1017
1016
1015
1014
1013
1012
1011
1011
1010
1010
1009
1007

Ozone (du)

313
312
311
310
310
309
308
308
307
306
304
302
300
300
301
301
297
294

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

Generated: 14/12/25 19:19:39. Forecast: 14/12/25 to 20/12/25. Timezone: UTC-5.00