Clear Outside v1.0 - International Weather Forecasts For Astronomers

Saturday 28

Waxing Gibbous 91%

15:53

05:57

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

Sun - Rise: 06:39, Set: 17:50, Transit: 12:14. Moon - Rise: 15:53, Set: 05:57. Civil Dark: 18:20 - 06:09. Nautical Dark: 18:54 - 05:35. Astro Dark: 19:28 - 05:00

Total Clouds (% Sky Obscured)

88
91
100
94
94
77
85
84
64
25
29
14
25
52
60
51
56
60
60
25
23
5
15
39

Low Clouds (% Sky Obscured)

10
10
21
15
25
36
59
55
57
25
29
14
21
10
27
32
34
32
34
10
11
1
6
19

Medium Clouds (% Sky Obscured)

88
91
100
94
88
59
49
45
28
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

55
5
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
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
1
2
1
1
2
1
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)

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

Chance of Frost

Temperature (°C)

-9
-11
-11
-11
-12
-13
-14
-15
-16
-16
-15
-15
-14
-14
-13
-12
-12
-12
-12
-15
-16
-17
-18
-18

Feels Like (°C)

-14
-15
-15
-16
-17
-18
-19
-20
-21
-20
-19
-19
-18
-18
-18
-18
-17
-17
-17
-19
-20
-21
-20
-21

Dew Point (°C)

-12
-13
-13
-14
-15
-17
-18
-18
-19
-19
-20
-20
-19
-19
-18
-18
-18
-18
-17
-18
-19
-20
-21
-21

Relative Humidity (%)

78
81
80
80
78
76
74
75
75
73
69
64
63
62
63
62
60
61
69
76
78
79
77
77

Pressure (mb)

1024
1024
1025
1026
1026
1027
1028
1029
1029
1031
1031
1032
1032
1032
1032
1032
1032
1033
1033
1034
1035
1036
1036
1036

Ozone (du)

409
407
407
406
410
409
408
410
415
423
431
445
457
459
457
459
461
459
458
454
454
453
450
447

Sunday 1

Waxing Gibbous 98%

17:09

06:20

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

Sun - Rise: 06:37, Set: 17:52, Transit: 12:14. Moon - Rise: 17:09, Set: 06:20. Civil Dark: 18:21 - 06:07. Nautical Dark: 18:55 - 05:33. Astro Dark: 19:30 - 04:59

Total Clouds (% Sky Obscured)

40
5
6
6
6
8
15
30
31
17
5
4
41
63
85
55
40
58
87
99
92
94
88
73

Low Clouds (% Sky Obscured)

20
3
4
2
2
3
2
2
1
1
1
1
12
15
10
10
15
15
9
10
7
1
5
3

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
9
27
30
12
0
0
0
10
33
7
4
24
64
76
84
92
86
49

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
3
2
0
2
4
9
6
4
29
54
33

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

Chance of Frost

Temperature (°C)

-19
-19
-20
-21
-21
-21
-22
-22
-22
-19
-17
-14
-12
-11
-9
-8
-7
-7
-7
-9
-10
-11
-11
-12

Feels Like (°C)

-23
-23
-22
-22
-23
-24
-24
-24
-24
-21
-19
-17
-15
-15
-14
-13
-12
-11
-10
-13
-14
-15
-15
-15

Dew Point (°C)

-22
-22
-23
-23
-24
-24
-25
-25
-25
-22
-20
-18
-16
-15
-14
-14
-13
-12
-10
-11
-12
-13
-13
-13

Relative Humidity (%)

78
77
77
75
75
75
74
75
74
77
78
75
72
68
65
64
63
66
80
85
85
86
86
86

Pressure (mb)

1037
1037
1038
1038
1038
1038
1039
1039
1039
1040
1040
1040
1039
1039
1037
1037
1036
1035
1035
1035
1035
1035
1034
1034

Ozone (du)

450
455
450
446
445
443
443
442
439
438
436
434
433
436
433
424
423
422
420
421
419
417
414
410

Monday 2

Waxing Gibbous 100%

18:22

06:39

23 Bad
00 Bad
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
19 Bad
20 Bad
21 Bad
22 Bad

Sun - Rise: 06:35, Set: 17:53, Transit: 12:14. Moon - Rise: 18:22, Set: 06:39. Civil Dark: 18:22 - 06:06. Nautical Dark: 18:57 - 05:31. Astro Dark: 19:31 - 04:57

Total Clouds (% Sky Obscured)

42
35
45
66
82
82
70
87
87
83
100
100
100
99
100
100
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

6
3
2
2
6
12
2
2
2
1
11
9
9
11
13
19
20
17
14
4
16
5
11
18

Medium Clouds (% Sky Obscured)

12
6
11
38
70
80
60
58
31
31
45
66
75
69
80
54
51
51
49
62
65
63
65
73

High Clouds (% Sky Obscured)

42
35
45
53
42
60
60
72
83
72
100
100
100
98
100
100
100
100
100
100
100
100
100
72

ISS Passover

Visibility (miles)

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

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
2
11
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)

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

Chance of Frost

Temperature (°C)

-12
-13
-13
-14
-14
-14
-14
-14
-15
-13
-10
-6
-4
-2
-1
0
1
1
1
-1
-3
-4
-5
-5

Feels Like (°C)

-15
-16
-17
-18
-17
-17
-18
-18
-19
-16
-13
-10
-8
-6
-4
-4
-3
-2
-2
-4
-6
-7
-8
-8

Dew Point (°C)

-14
-15
-15
-16
-16
-15
-16
-16
-16
-15
-11
-8
-6
-3
-1
0
1
1
0
-2
-4
-5
-5
-6

Relative Humidity (%)

86
86
84
84
84
86
86
86
86
86
88
90
87
94
98
98
100
98
94
96
94
94
96
94

Pressure (mb)

1033
1033
1032
1032
1031
1031
1031
1030
1030
1030
1030
1029
1028
1028
1027
1026
1026
1026
1025
1025
1026
1025
1025
1025

Ozone (du)

406
405
404
405
404
401
397
394
389
386
383
381
380
377
375
374
373
374
376
378
380
378
381
384

Tuesday 3

Full Moon 99%

19:32

06:56

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
19 Bad
20 Bad
21 Bad
22 Bad

Sun - Rise: 06:33, Set: 17:54, Transit: 12:14. Moon - Rise: 19:32, Set: 06:56. Civil Dark: 18:24 - 06:04. Nautical Dark: 18:58 - 05:30. Astro Dark: 19:32 - 04:55

Total Clouds (% Sky Obscured)

99
100
81
62
48
61
77
91
91
91
90
86
80
77
70
63
65
59
62
55
57
68
80
86

Low Clouds (% Sky Obscured)

24
25
30
39
48
61
75
90
78
66
57
53
54
60
62
63
65
59
57
50
52
59
66
56

Medium Clouds (% Sky Obscured)

79
80
57
28
0
0
0
0
5
8
11
16
14
14
9
4
0
13
62
55
48
44
54
66

High Clouds (% Sky Obscured)

30
0
0
0
0
0
0
0
36
39
60
58
41
25
23
22
15
5
5
0
2
9
29
59

ISS Passover

Visibility (miles)

1
0
0
0
0
0
0
1
1
1
0
0
0
0
1
0
0
0
0
0
0
0
6
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
Frozen rai
Frozen rai
Frozen rai
Frozen rai

Precipitation Probability (%)

1
0
0
0
0
0
0
13
0
0
0
1
16
3
0
0
0
0
3
49
94
95
95
95

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.6
1.4
1.4
0.9

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

98
98
100
100
98
98
98
98
100
98
98
100
100
100
100
100
100
100
98
98
98
98
96
98

Pressure (mb)

1025
1025
1025
1025
1024
1024
1025
1025
1025
1026
1026
1026
1025
1024
1024
1023
1023
1022
1022
1022
1021
1021
1020
1020

Ozone (du)

387
386
383
381
380
380
380
382
379
377
374
373
374
372
368
368
367
366
368
368
365
364
360
358

Wednesday 4

Waning Gibbous 97%

20:42

07:13

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
19 Bad
20 Bad
21 Bad
22 Bad

Sun - Rise: 06:31, Set: 17:56, Transit: 12:14. Moon - Rise: 20:42, Set: 07:13. Civil Dark: 18:25 - 06:02. Nautical Dark: 18:59 - 05:28. Astro Dark: 19:34 - 04:53

Total Clouds (% Sky Obscured)

93
100
90
79
71
73
73
72
76
80
87
90
95
100
100
100
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

48
25
19
27
36
39
42
46
54
63
73
64
57
50
43
38
34
22
11
0
16
31
47
65

Medium Clouds (% Sky Obscured)

83
97
45
72
68
72
73
72
65
13
14
8
10
8
11
19
30
50
55
60
60
70
70
65

High Clouds (% Sky Obscured)

81
100
83
67
46
31
29
27
18
32
30
57
81
82
88
84
96
91
82
63
53
48
53
45

ISS Passover

Visibility (miles)

1
1
9
7
7
9
5
0
4
9
9
9
2
0
4
6
8
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
None
None
None
None
None
Light Rain
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
Snow

Precipitation Probability (%)

85
36
7
19
18
50
65
20
1
0
2
0
0
4
8
7
2
4
3
1
13
22
29
72

Precipitation Amount (mm)

0.5
0
0
0
0
0
0.4
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.4

Wind Speed/Direction (mph)

3
3
3
3
4
4
4
4
4
5
7
9
9
11
11
10
10
10
11
11
12
11
11
11

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-3
-4
-4
-4
-5
-5
-5
-5
-5
-4
-4
-4
-3
-4
-4
-2
-2
-3
-3
-3
-3
-7
-7
-8

Dew Point (°C)

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

Relative Humidity (%)

100
98
98
98
98
98
100
100
96
96
94
92
100
98
98
94
91
88
86
86
84
84
82
82

Pressure (mb)

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

Ozone (du)

356
355
356
355
354
355
356
358
356
353
352
349
348
348
344
342
340
338
340
341
342
342
342
342

Thursday 5

Waning Gibbous 92%

21:50

07:31

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
19 Bad
20 Bad
21 Bad
22 Bad

Sun - Rise: 06:30, Set: 17:57, Transit: 12:13. Moon - Rise: 21:50, Set: 07:31. Civil Dark: 18:26 - 06:00. Nautical Dark: 19:01 - 05:26. Astro Dark: 19:35 - 04:51

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

82
100
98
95
93
95
98
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100

Medium Clouds (% Sky Obscured)

61
61
56
51
41
31
25
20
18
13
11
24
40
51
52
54
57
61
37
10
10
20
40
50

High Clouds (% Sky Obscured)

66
90
96
99
100
100
100
100
72
43
10
37
67
100
69
38
7
38
71
100
88
92
90
93

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
6
3
1
1
1
1
1
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
0
0
0
0
0

Precipitation Type

Snow
Snow
Snow
Snow
Frozen rai
Frozen rai
Frozen rai
Frozen rai
Frozen rai
Frozen rai
None
None
None
Frozen rai
None
None
None
None
None
None
Frozen rai
Frozen rai
Frozen rai
Frozen rai

Precipitation Probability (%)

95
95
95
95
95
95
95
95
95
79
25
35
43
52
47
36
20
17
27
50
90
95
95
95

Precipitation Amount (mm)

0.7
1.1
1.2
1.2
1.1
1.2
1.3
1.3
0.9
0.4
0
0
0
0.2
0
0
0
0
0
0
0.5
1
1.4
1.1

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

84
85
85
83
82
77
80
82
83
83
84
82
85
87
92
92
94
94
94
96
94
96
98
100

Pressure (mb)

1028
1028
1028
1027
1026
1025
1025
1025
1025
1025
1025
1025
1025
1024
1024
1023
1023
1022
1022
1021
1021
1020
1019
1018

Ozone (du)

343
344
344
340
337
333
329
324
320
318
316
314
312
311
309
308
307
306
304
302
301
296
292
288

Friday 6

Waning Gibbous 85%

22:59

07:51

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: 06:28, Set: 17:58, Transit: 12:13. Moon - Rise: 22:59, Set: 07:51. Civil Dark: 18:28 - 05:58. Nautical Dark: 19:02 - 05:24. Astro Dark: 19:37 - 04:49

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
100
97
95
93
96
98
100
100
100
100

Low Clouds (% Sky Obscured)

100
100
100
100
100
100
99
99
97
96
94
82
71
61
64
61
49
48
46
45

Medium Clouds (% Sky Obscured)

55
95
61
26
1
11
30
45
50
41
37
32
28
28
46
59
65
60
60
60

High Clouds (% Sky Obscured)

91
76
53
16
3
35
67
94
69
56
70
95
95
93
96
98
100
100
100
100

ISS Passover

Visibility (miles)

0
0
0
0
0
0
0
0
0
0
0
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
0

Precipitation Type

Frozen rai
Light Rain
Light Rain
Very Light Rain
None
Sleet
Frozen rai
Frozen rai
Frozen rai
Frozen rai
Light Rain
Very Light Rain
None
None
None
None
None
None
None
None

Precipitation Probability (%)

95
95
79
59
35
57
87
95
95
95
95
69
37
14
10
4
0
5
9
11

Precipitation Amount (mm)

1.1
0.7
0.4
0.3
0
0.3
0.6
1.1
1.1
1.1
0.9
0.3
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-9
-9
-9
-4
-5
-4
-4
-4
-3
-3
-2
-2
-1
-1
-1
1
1
2
2
1

Dew Point (°C)

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

Relative Humidity (%)

98
100
100
100
100
100
100
100
100
98
100
100
98
100
100
98
100
100
100
100

Pressure (mb)

1017
1017
1016
1016
1015
1014
1014
1014
1014
1014
1014
1015
1015
1016
1016
1017
1017
1018
1019
1019

Ozone (du)

283
279
275
274
273
272
272
271
270
270
269
269
269
268
268
269
269
269
269
270

Forecast for ByWard Market, Ottawa, Canada (45.42,-75.69)

Generated: 28/02/26 22:21:28. Forecast: 28/02/26 to 06/03/26. Timezone: UTC-5.00