Clear Outside v1.0 - International Weather Forecasts For Astronomers

Saturday 31

Waxing Gibbous 99%

15:30

06:31

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

Sun - Rise: 07:05, Set: 17:02, Transit: 12:03. Moon - Rise: 15:30, Set: 06:31. Civil Dark: 17:32 - 06:35. Nautical Dark: 18:06 - 06:01. Astro Dark: 18:39 - 05:27

Total Clouds (% Sky Obscured)

63
49
39
31
7
25
28
32
39
34
14
6
10
19
9
4
4
40
80
74
87
44
49
54

Low Clouds (% Sky Obscured)

0
1
2
1
4
14
20
28
25
24
7
4
7
16
5
1
0
0
0
0
0
0
0
2

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
38
1
56
78
25
42
23

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
2
80
40
26
44
23
54

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
8
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
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
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)

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

Chance of Frost

Temperature (°C)

-19
-20
-21
-19
-15
-13
-11
-10
-9
-9
-10
-12
-14
-15
-16
-17
-17
-18
-18
-18
-18
-18
-18
-18

Feels Like (°C)

-22
-23
-23
-21
-17
-15
-15
-14
-14
-14
-14
-15
-16
-17
-19
-19
-19
-20
-20
-22
-21
-22
-22
-22

Dew Point (°C)

-22
-23
-24
-23
-19
-17
-16
-14
-14
-14
-13
-14
-16
-18
-18
-19
-20
-20
-21
-20
-21
-21
-21
-21

Relative Humidity (%)

77
75
72
72
70
69
69
71
69
69
77
83
83
81
81
80
80
80
80
80
80
80
80
79

Pressure (mb)

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

Ozone (du)

468
469
467
467
467
466
465
464
462
460
456
454
451
448
443
439
437
435
430
429
425
421
419
422

Sunday 1

Full Moon 100%

16:50

07:09

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

Sun - Rise: 07:04, Set: 17:03, Transit: 12:04. Moon - Rise: 16:50, Set: 07:09. Civil Dark: 17:33 - 06:34. Nautical Dark: 18:07 - 05:59. Astro Dark: 18:40 - 05:26

Total Clouds (% Sky Obscured)

42
95
67
37
42
56
41
87
87
100
100
100
100
100
100
97
85
80
75
47
47
58
58
15

Low Clouds (% Sky Obscured)

3
4
9
13
40
38
25
18
20
4
6
5
4
4
9
10
9
9
20
10
8
5
5
13

Medium Clouds (% Sky Obscured)

9
12
17
8
10
11
15
48
43
53
47
43
30
37
41
33
24
27
10
3
3
17
12
0

High Clouds (% Sky Obscured)

42
95
67
37
24
56
37
52
39
100
100
100
100
100
100
66
49
57
32
32
33
26
42
7

ISS Passover

Visibility (miles)

9
9
8
8
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
7
7
7
9
7

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
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)

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

Chance of Frost

Temperature (°C)

-19
-19
-18
-15
-13
-11
-9
-8
-7
-6
-7
-9
-10
-11
-12
-12
-13
-13
-13
-13
-13
-12
-13
-13

Feels Like (°C)

-23
-23
-22
-19
-17
-15
-15
-13
-12
-12
-12
-14
-15
-16
-17
-17
-17
-17
-17
-17
-17
-17
-17
-17

Dew Point (°C)

-21
-21
-20
-18
-16
-14
-13
-12
-11
-10
-10
-12
-12
-13
-14
-15
-15
-15
-15
-15
-15
-14
-15
-15

Relative Humidity (%)

79
79
79
78
78
75
72
71
71
76
79
80
85
86
83
83
83
81
83
81
84
84
84
84

Pressure (mb)

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

Ozone (du)

426
427
424
429
433
432
427
422
419
419
420
423
425
428
428
428
427
429
430
434
436
441
445
448

Monday 2

Waning Gibbous 98%

18:07

07:38

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

Sun - Rise: 07:03, Set: 17:04, Transit: 12:04. Moon - Rise: 18:07, Set: 07:38. Civil Dark: 17:34 - 06:33. Nautical Dark: 18:08 - 05:58. Astro Dark: 18:42 - 05:25

Total Clouds (% Sky Obscured)

18
10
4
3
2
2
1
0
1
0
0
2
3
9
14
17
23
26
27
41
49
55
57
49

Low Clouds (% Sky Obscured)

11
6
3
3
2
2
1
0
1
0
0
2
3
9
14
14
21
22
25
25
24
26
26
28

Medium Clouds (% Sky Obscured)

7
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
3
5
5
15
20

High Clouds (% Sky Obscured)

2
5
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
15
24
55
40
16

ISS Passover

Visibility (miles)

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

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
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)

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

Chance of Frost

Temperature (°C)

-14
-14
-13
-10
-8
-6
-5
-4
-3
-3
-4
-6
-8
-9
-10
-10
-11
-11
-12
-12
-12
-12
-12
-13

Feels Like (°C)

-17
-17
-16
-13
-10
-9
-8
-8
-7
-6
-7
-8
-10
-11
-12
-13
-13
-14
-14
-14
-14
-14
-15
-16

Dew Point (°C)

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

Relative Humidity (%)

84
84
83
80
74
69
67
65
66
69
70
82
87
87
86
86
86
85
85
85
85
85
84
84

Pressure (mb)

1013
1014
1015
1015
1014
1014
1013
1013
1013
1013
1014
1015
1016
1017
1017
1018
1018
1019
1019
1019
1020
1020
1020
1020

Ozone (du)

451
453
455
459
462
464
468
470
466
459
455
451
439
425
416
424
435
433
427
422
403
396
389
394

Tuesday 3

Waning Gibbous 93%

19:20

08:01

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

Sun - Rise: 07:02, Set: 17:06, Transit: 12:04. Moon - Rise: 19:20, Set: 08:01. Civil Dark: 17:35 - 06:32. Nautical Dark: 18:09 - 05:57. Astro Dark: 18:43 - 05:24

Total Clouds (% Sky Obscured)

48
46
42
30
23
24
30
31
28
30
50
55
61
60
61
65
68
71
74
72
69
63
46
30

Low Clouds (% Sky Obscured)

26
23
25
13
4
2
7
29
28
30
50
55
29
24
27
39
41
43
46
42
38
18
18
15

Medium Clouds (% Sky Obscured)

28
24
13
15
16
17
18
12
7
0
13
23
34
37
37
44
54
61
62
64
64
63
42
21

High Clouds (% Sky Obscured)

1
1
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)

6
6
7
9
9
9
9
9
9
9
9
9
9
8
4
4
3
3
3
3
3
3
4
4

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

2
2
2
2
2
2
2
3
3
4
4
4
4
4
3
3
3
3
3
3
3
3
3
3

Chance of Frost

Temperature (°C)

-13
-13
-11
-8
-6
-4
-3
-1
-1
-1
-1
-4
-6
-7
-7
-8
-8
-9
-9
-9
-9
-9
-9
-9

Feels Like (°C)

-15
-16
-13
-10
-7
-5
-3
-2
-2
-4
-4
-7
-9
-10
-9
-10
-11
-11
-11
-12
-12
-12
-12
-12

Dew Point (°C)

-15
-16
-13
-11
-9
-9
-7
-6
-6
-6
-4
-5
-7
-8
-8
-9
-10
-10
-10
-11
-11
-11
-11
-11

Relative Humidity (%)

84
83
85
82
77
72
71
68
67
67
81
91
92
90
90
90
90
90
88
87
88
88
87
87

Pressure (mb)

1021
1021
1021
1021
1021
1020
1019
1019
1018
1018
1018
1019
1020
1020
1021
1021
1021
1021
1021
1021
1021
1021
1021
1022

Ozone (du)

407
410
408
408
404
397
395
397
395
393
390
387
384
385
385
385
385
384
381
383
382
380
377
377

Wednesday 4

Waning Gibbous 87%

20:30

08:22

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

Sun - Rise: 07:01, Set: 17:07, Transit: 12:04. Moon - Rise: 20:30, Set: 08:22. Civil Dark: 17:37 - 06:31. Nautical Dark: 18:11 - 05:56. Astro Dark: 18:44 - 05:23

Total Clouds (% Sky Obscured)

14
12
5
2
27
24
18
22
27
14
10
7
4
5
6
7
7
7
8
12
18
26
31
41

Low Clouds (% Sky Obscured)

14
12
5
1
14
14
10
10
11
1
1
2
2
3
3
3
3
3
2
1
0
0
0
0

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
4
7
10
7
3
0
0
0
0
0
0
0
1
2
3
23
41

High Clouds (% Sky Obscured)

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

ISS Passover

Visibility (miles)

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

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
3
1
3
5
3
3
5
12
11
2
3
5
1
2
2
1
2
3

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

87
87
85
82
74
69
68
65
68
72
76
85
89
87
87
87
87
85
87
87
85
85
83
82

Pressure (mb)

1022
1022
1022
1022
1022
1022
1021
1021
1021
1021
1021
1021
1022
1022
1022
1022
1022
1022
1021
1021
1021
1021
1020
1020

Ozone (du)

378
387
401
406
406
405
404
404
404
406
413
420
433
440
440
439
439
434
428
422
423
424
425
431

Thursday 5

Waning Gibbous 79%

21:37

08:41

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

Sun - Rise: 07:00, Set: 17:08, Transit: 12:04. Moon - Rise: 21:37, Set: 08:41. Civil Dark: 17:38 - 06:30. Nautical Dark: 18:12 - 05:55. Astro Dark: 18:45 - 05:22

Total Clouds (% Sky Obscured)

53
40
26
13
31
49
68
73
78
82
77
53
44
36
41
38
34
34
31
36
41
46
66
85

Low Clouds (% Sky Obscured)

1
1
1
1
1
2
0
24
48
72
74
53
44
36
41
38
34
34
31
36
41
46
66
79

Medium Clouds (% Sky Obscured)

53
40
23
3
2
1
4
4
5
5
5
5
9
29
25
10
6
6
7
3
5
7
38
70

High Clouds (% Sky Obscured)

1
0
0
0
3
2
4
4
4
6
27
52
44
36
41
38
34
34
31
36
41
46
66
85

ISS Passover

Visibility (miles)

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

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
Snow
Snow
Snow
Snow
Snow
Snow
Snow

Precipitation Probability (%)

0
1
1
0
5
7
6
15
17
17
17
14
4
9
9
7
30
46
58
65
67
70
72
69

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

80
78
75
72
69
67
68
68
68
68
69
72
74
79
80
83
85
85
85
83
83
83
83
83

Pressure (mb)

1020
1020
1019
1019
1018
1018
1017
1016
1016
1015
1015
1015
1015
1015
1015
1015
1014
1014
1013
1013
1012
1011
1010
1010

Ozone (du)

438
445
439
433
428
426
423
421
420
420
420
421
422
424
418
413
408
407
406
404
404
404
404
403

Friday 6

Waning Gibbous 70%

22:44

09:00

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

Sun - Rise: 06:58, Set: 17:10, Transit: 12:04. Moon - Rise: 22:44, Set: 09:00. Civil Dark: 17:39 - 06:29. Nautical Dark: 18:13 - 05:54. Astro Dark: 18:46 - 05:21

Total Clouds (% Sky Obscured)

100
100
100
99
95
91
83
89
96
100
91
82
73
73
77
85
95
100
100

Low Clouds (% Sky Obscured)

70
62
62
60
59
54
39
58
78
97
91
82
73
73
77
85
95
99
100

Medium Clouds (% Sky Obscured)

100
99
98
97
92
87
82
88
96
100
82
67
65
65
70
70
86
98
99

High Clouds (% Sky Obscured)

100
81
58
32
52
73
83
89
96
100
78
57
20
12
15
23
17
15
14

ISS Passover

Visibility (miles)

8
9
9
9
9
7
6
4
3
1
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

Precipitation Type

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

Precipitation Probability (%)

63
67
68
60
61
52
41
43
38
42
40
30
34
41
37
30
38
38
41

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

82
83
79
76
73
75
78
78
82
87
92
92
94
94
94
96
96
96
96

Pressure (mb)

1009
1008
1007
1006
1005
1004
1002
1001
1001
1000
1000
1000
1000
1000
1000
1000
1000
1000
1000

Ozone (du)

403
403
404
405
407
404
402
400
398
397
395
396
397
398
399
401
403
401
400

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

Generated: 31/01/26 06:42:34. Forecast: 31/01/26 to 06/02/26. Timezone: UTC-5.00