Clear Outside v1.0 - International Weather Forecasts For Astronomers

Tuesday 20

Waxing Crescent 4%

09:21

19:15

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

Sun - Rise: 07:47, Set: 17:10, Transit: 12:29. Moon - Rise: 09:21, Set: 19:15. Civil Dark: 17:42 - 07:15. Nautical Dark: 18:18 - 06:39. Astro Dark: 18:53 - 06:04

Total Clouds (% Sky Obscured)

71
66
100
100
100
100
99
94
96
94
96
100
100
100
100
100
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

71
66
100
100
100
100
99
94
94
91
95
100
100
91
76
37
6
0
0
62
81
95
99
100

Medium Clouds (% Sky Obscured)

50
55
55
55
26
2
2
0
0
0
2
45
48
100
100
96
96
100
100
100
100
100
100
100

High Clouds (% Sky Obscured)

0
0
0
4
3
0
0
0
0
0
4
61
57
95
98
99
99
96
100
100
100
100
100
68

ISS Passover

Visibility (miles)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
5
1
0
0
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
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
None
None
Snow
Snow
Snow
Snow

Precipitation Probability (%)

0
0
0
60
61
64
62
63
70
60
63
57
58
54
54
49
41
43
26
13
47
68
82
82

Precipitation Amount (mm)

0
0
0
0.3
0.4
0.5
0.5
0.5
0.6
0.5
0.5
0.5
0.4
0.4
0.4
0.2
0.1
0.2
0
0
0.2
0.3
0.5
0.5

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-18
-19
-19
-19
-16
-16
-17
-18
-18
-17
-18
-17
-17
-17
-17
-17
-17
-17
-18
-17
-17
-16
-15
-14

Dew Point (°C)

-17
-16
-15
-15
-12
-12
-13
-13
-13
-13
-13
-13
-13
-13
-13
-13
-13
-13
-13
-14
-14
-13
-12
-11

Relative Humidity (%)

84
83
83
83
86
86
88
88
90
90
86
86
88
86
86
88
83
90
86
83
83
88
90
90

Pressure (mb)

1021
1021
1021
1021
1021
1022
1022
1022
1023
1023
1023
1023
1023
1023
1023
1023
1023
1023
1022
1022
1022
1021
1020
1018

Ozone (du)

492
471
463
460
466
465
457
457
458
454
451
447
444
444
438
432
423
418
418
415
414
411
412
413

Wednesday 21

Waxing Crescent 9%

09:40

20:27

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

Sun - Rise: 07:46, Set: 17:11, Transit: 12:29. Moon - Rise: 09:40, Set: 20:27. Civil Dark: 17:43 - 07:14. Nautical Dark: 18:19 - 06:38. Astro Dark: 18:54 - 06:04

Total Clouds (% Sky Obscured)

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

Low Clouds (% Sky Obscured)

95
94
94
91
88
89
83
79
77
96
100
98
100
100
100
100
99
83
98
100
100
91
83
84

Medium Clouds (% Sky Obscured)

100
99
99
100
100
99
100
95
83
55
88
80
100
100
100
100
100
40
56
57
100
93
52
50

High Clouds (% Sky Obscured)

33
95
57
90
12
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

ISS Passover

Visibility (miles)

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

Fog (%)

0
0
0
0
1
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
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
None
Snow
Snow
Snow
Snow
Snow

Precipitation Probability (%)

79
70
68
64
55
53
61
60
57
57
67
50
69
80
83
93
62
46
40
57
66
69
64
66

Precipitation Amount (mm)

0.4
0.3
0.3
0.4
0.2
0.2
0.3
0.3
0.2
0.2
0.4
0.2
0.3
0.5
0.7
1.1
0.3
0.2
0
0.2
0.3
0.4
0.3
0.3

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

90
92
92
94
94
94
96
96
94
94
94
94
87
92
90
90
90
82
85
77
82
80
85
79

Pressure (mb)

1017
1015
1013
1012
1011
1011
1011
1011
1011
1010
1009
1009
1009
1009
1009
1009
1009
1009
1010
1010
1011
1011
1012
1012

Ozone (du)

417
415
409
406
413
421
429
436
435
439
442
442
446
448
454
445
451
457
453
452
456
457
454
442

Thursday 22

Waxing Crescent 17%

09:58

21:38

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

Sun - Rise: 07:45, Set: 17:13, Transit: 12:29. Moon - Rise: 09:58, Set: 21:38. Civil Dark: 17:44 - 07:13. Nautical Dark: 18:20 - 06:38. Astro Dark: 18:55 - 06:03

Total Clouds (% Sky Obscured)

100
100
100
98
100
100
100
100
100
100
100
100
100
95
100
100
100
98
69
76
88
100
97
88

Low Clouds (% Sky Obscured)

79
100
100
91
100
100
100
100
100
100
100
100
100
82
100
100
100
97
60
71
85
100
95
83

Medium Clouds (% Sky Obscured)

45
45
45
28
42
40
40
40
41
41
38
38
32
30
96
100
100
98
69
70
65
48
7
13

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)

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

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

Precipitation Probability (%)

61
60
61
48
47
56
68
68
63
73
78
74
70
60
54
50
54
57
61
65
59
44
36
28

Precipitation Amount (mm)

0.3
0.3
0.4
0.1
0.1
0.3
0.5
0.4
0.3
0.6
0.7
0.7
0.7
0.5
0.3
0.2
0.2
0.3
0.4
0.5
0.3
0.2
0
0

Wind Speed/Direction (mph)

15
15
14
13
13
13
12
12
11
11
9
9
7
7
7
6
5
4
5
4
5
7
9
10

Chance of Frost

Temperature (°C)

-6
-6
-7
-7
-8
-8
-9
-9
-11
-11
-11
-13
-14
-15
-17
-17
-18
-18
-19
-20
-20
-20
-20
-20

Feels Like (°C)

-12
-13
-13
-13
-15
-15
-15
-15
-17
-18
-17
-18
-19
-20
-21
-22
-23
-23
-23
-24
-24
-25
-26
-26

Dew Point (°C)

-9
-9
-9
-10
-11
-11
-11
-12
-13
-15
-14
-15
-16
-17
-18
-20
-20
-21
-21
-22
-22
-22
-23
-24

Relative Humidity (%)

80
79
80
79
75
78
82
83
81
75
81
83
84
86
85
82
81
83
83
82
83
82
75
70

Pressure (mb)

1013
1013
1013
1014
1014
1015
1015
1015
1016
1016
1016
1017
1018
1019
1019
1020
1020
1020
1020
1021
1022
1023
1024
1025

Ozone (du)

443
451
457
456
451
445
443
444
443
441
435
434
436
446
449
439
421
411
410
405
401
398
406
425

Friday 23

Waxing Crescent 26%

10:17

22:51

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 OK
01 OK
02 OK
03 OK
04 OK
05 OK
06 Bad
07 OK
08 OK
09 OK
10 OK
11 Bad

Sun - Rise: 07:44, Set: 17:14, Transit: 12:30. Moon - Rise: 10:17, Set: 22:51. Civil Dark: 17:46 - 07:13. Nautical Dark: 18:21 - 06:37. Astro Dark: 18:56 - 06:02

Total Clouds (% Sky Obscured)

68
83
70
56
41
22
4
17
32
47
34
18
2
5
5
3
5
10
16
6
7
6
13
23

Low Clouds (% Sky Obscured)

57
78
62
47
35
18
4
16
32
47
34
18
1
2
2
1
4
7
7
2
3
3
13
23

Medium Clouds (% Sky Obscured)

19
13
7
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)

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)

8
8
9
8
8
6
5
7
8
8
8
9
9
8
8
8
8
7
6
7
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 (%)

25
23
20
14
17
28
17
18
19
13
14
14
8
10
12
8
15
13
11
10
10
5
6
8

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)

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

Chance of Frost

Temperature (°C)

-20
-20
-20
-20
-20
-21
-22
-22
-23
-23
-24
-25
-26
-26
-26
-26
-27
-27
-27
-28
-28
-27
-25
-23

Feels Like (°C)

-26
-25
-25
-25
-24
-25
-26
-27
-26
-27
-27
-28
-29
-29
-29
-29
-29
-29
-30
-31
-30
-29
-27
-25

Dew Point (°C)

-24
-25
-25
-24
-24
-25
-26
-27
-27
-28
-28
-29
-29
-29
-30
-30
-30
-31
-31
-31
-31
-30
-30
-28

Relative Humidity (%)

68
64
64
68
68
65
64
63
63
63
64
69
69
70
68
67
68
69
70
70
69
67
64
61

Pressure (mb)

1025
1026
1026
1027
1028
1029
1031
1032
1032
1033
1034
1035
1036
1036
1037
1037
1037
1038
1039
1040
1040
1040
1040
1040

Ozone (du)

439
443
441
436
437
439
445
443
436
428
407
390
387
394
384
367
355
337
330
330
332
333
331
330

Saturday 24

Waxing Crescent 36%

10:39

00:06

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

Sun - Rise: 07:43, Set: 17:15, Transit: 12:30. Moon - Rise: 10:39, Set: 00:06. Civil Dark: 17:47 - 07:12. Nautical Dark: 18:23 - 06:36. Astro Dark: 18:57 - 06:02

Total Clouds (% Sky Obscured)

39
45
75
88
84
56
33
54
72
83
92
95
97
91
89
88
90
90
90
92
93
94
96
97

Low Clouds (% Sky Obscured)

39
45
75
84
79
56
33
53
67
74
78
80
82
73
76
79
79
81
84
84
84
83
83
85

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
15
28
42
47
46
53
40
38
38
43
49
55
59
59
58
70
85

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
2
0
0
5
5
10
10
10

ISS Passover

Visibility (miles)

9
9
9
9
9
8
9
7
3
3
3
2
2
2
2
2
2
4
6
8
9
9
9
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 (%)

5
9
9
8
11
10
8
10
10
9
10
10
9
6
8
6
10
10
3
6
6
1
4
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)

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

Chance of Frost

Temperature (°C)

-21
-20
-19
-19
-18
-20
-21
-21
-22
-22
-23
-22
-22
-22
-21
-22
-22
-22
-22
-22
-22
-22
-22
-20

Feels Like (°C)

-23
-22
-22
-22
-22
-23
-24
-23
-25
-26
-26
-26
-26
-27
-26
-27
-27
-28
-29
-30
-28
-29
-30
-29

Dew Point (°C)

-26
-25
-24
-23
-21
-22
-24
-24
-25
-25
-25
-25
-25
-25
-24
-24
-25
-25
-25
-25
-25
-24
-24
-22

Relative Humidity (%)

62
64
68
70
76
80
77
76
75
75
75
75
75
75
76
76
76
76
77
77
77
76
76
79

Pressure (mb)

1039
1039
1038
1038
1038
1038
1038
1038
1038
1038
1037
1037
1037
1036
1036
1035
1035
1034
1034
1033
1033
1033
1033
1032

Ozone (du)

328
323
322
321
321
324
328
329
327
323
326
330
328
325
326
327
327
327
328
328
330
331
333
339

Sunday 25

First Quarter 47%

11:04

01:24

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

Sun - Rise: 07:42, Set: 17:17, Transit: 12:30. Moon - Rise: 11:04, Set: 01:24. Civil Dark: 17:48 - 07:11. Nautical Dark: 18:24 - 06:35. Astro Dark: 18:59 - 06:01

Total Clouds (% Sky Obscured)

99
99
99
99
95
91
87
87
89
91
75
59
35
21
11
0
1
2
2
6
6
5
14
27

Low Clouds (% Sky Obscured)

88
94
95
98
95
91
87
87
89
91
75
59
35
21
11
0
1
2
2
6
6
5
14
27

Medium Clouds (% Sky Obscured)

96
96
97
97
93
86
78
64
54
44
31
17
3
1
1
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

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

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 (%)

4
11
15
17
17
16
15
14
14
14
23
27
26
27
22
6
8
7
3
14
17
15
27
30

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
3
3
3
3
3
3
3
3
3
3
3
3
2
2
3
3
3
3
2
2
3
3

Chance of Frost

Temperature (°C)

-18
-17
-16
-16
-15
-15
-16
-16
-16
-17
-17
-18
-18
-19
-20
-21
-22
-23
-23
-23
-21
-20
-18
-16

Feels Like (°C)

-29
-29
-21
-20
-20
-18
-18
-16
-20
-20
-19
-20
-20
-20
-23
-23
-22
-22
-23
-23
-28
-30
-31
-29

Dew Point (°C)

-21
-20
-19
-18
-17
-17
-18
-18
-18
-18
-19
-20
-20
-21
-22
-24
-25
-25
-26
-26
-24
-22
-20
-18

Relative Humidity (%)

79
78
80
81
82
83
84
86
86
85
83
84
83
82
81
77
76
76
76
75
77
82
84
84

Pressure (mb)

1031
1030
1030
1030
1029
1029
1030
1030
1030
1030
1030
1030
1030
1030
1031
1031
1031
1032
1032
1033
1033
1033
1033
1033

Ozone (du)

344
350
354
358
363
368
374
379
383
387
392
393
394
395
392
390
387
390
392
394
394
393
392
389

Monday 26

Waxing Gibbous 59%

11:38

02:44

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
05 Bad
06 Bad

Sun - Rise: 07:41, Set: 17:18, Transit: 12:30. Moon - Rise: 11:38, Set: 02:44. Civil Dark: 17:50 - 07:10. Nautical Dark: 18:25 - 06:35. Astro Dark: 19:00 - 06:00

Total Clouds (% Sky Obscured)

46
58
67
76
64
55
43
66
81
94
92
91
90
91
89
87
87
85
84

Low Clouds (% Sky Obscured)

36
52
57
67
52
38
17
37
57
77
78
80
83
89
88
87
87
85
82

Medium Clouds (% Sky Obscured)

0
0
1
1
1
1
1
9
11
10
8
6
5
5
4
3
2
1
0

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
1
3
4
5
6
7
9
10
12
9
6
3

ISS Passover

Visibility (miles)

1
2
3
4
6
4
2
0
0
0
0
0
0
0
1
2
4
2
1

Fog (%)

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
Snow
None
None
Snow
None
Snow
Snow

Precipitation Probability (%)

29
31
31
30
31
30
28
30
30
29
28
28
30
29
30
31
30
31
33

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

-14
-12
-12
-12
-11
-12
-13
-14
-14
-13
-13
-13
-13
-12
-12
-12
-11
-11
-11

Feels Like (°C)

-27
-26
-16
-17
-17
-17
-16
-16
-19
-19
-19
-19
-19
-18
-17
-17
-17
-17
-17

Dew Point (°C)

-16
-14
-14
-15
-15
-15
-15
-15
-15
-15
-15
-14
-14
-14
-13
-13
-13
-13
-13

Relative Humidity (%)

84
84
81
79
76
81
86
92
90
88
86
88
90
90
88
88
86
86
88

Pressure (mb)

1033
1033
1032
1032
1032
1033
1033
1033
1033
1033
1033
1032
1032
1032
1032
1032
1032
1032
1032

Ozone (du)

386
382
384
385
387
383
380
376
375
373
372
366
360
354
354
354
354
352
351

Forecast for Glen Echo, Canada (44.94,-79.51)

Generated: 20/01/26 12:45:01. Forecast: 20/01/26 to 26/01/26. Timezone: UTC-5.00