Clear Outside v1.0 - International Weather Forecasts For Astronomers

Monday 15

Waning Crescent 28%

00:29

16:22

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

Sun - Rise: 06:43, Set: 19:12, Transit: 12:57. Moon - Rise: 00:29, Set: 16:22. Civil Dark: 19:42 - 06:14. Nautical Dark: 20:17 - 05:39. Astro Dark: 20:53 - 05:03

Total Clouds (% Sky Obscured)

18
22
24
25
12
10
8
7
8
9
9
8
63
64
36
28
27
30
37
39
0
0
0
0

Low Clouds (% Sky Obscured)

18
22
24
22
12
10
8
7
5
3
0
0
28
34
36
28
27
30
37
39
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)

0
1
3
4
0
3
4
4
4
6
8
6
47
50
19
4
0
0
2
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
1
0
1
1
1
1
6
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)

3
2
2
1
2
2
2
2
2
3
3
3
2
3
2
3
3
2
2
2
2
2
2
3

Chance of Frost

Temperature (°C)

20
21
21
21
23
23
22
19
17
16
15
14
13
12
12
11
11
11
10
10
12
16
19
21

Feels Like (°C)

21
22
23
23
25
24
24
21
19
18
16
16
14
12
11
12
12
12
11
11
13
17
20
22

Dew Point (°C)

8
8
8
8
9
9
12
11
11
11
11
11
10
10
9
9
9
8
8
8
8
8
9
9

Relative Humidity (%)

47
45
43
41
41
42
52
60
67
72
77
80
84
86
86
87
87
85
87
85
75
61
52
46

Pressure (mb)

1027
1026
1026
1025
1025
1024
1025
1025
1025
1026
1026
1026
1026
1026
1026
1026
1026
1026
1026
1026
1027
1027
1027
1026

Ozone (du)

286
287
287
288
288
289
289
289
289
288
288
288
287
288
288
288
289
290
289
288
287
287
287
287

Tuesday 16

Waning Crescent 18%

01:44

17:04

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

Sun - Rise: 06:45, Set: 19:10, Transit: 12:57. Moon - Rise: 01:44, Set: 17:04. Civil Dark: 19:40 - 06:15. Nautical Dark: 20:15 - 05:40. Astro Dark: 20:51 - 05:04

Total Clouds (% Sky Obscured)

0
0
0
0
0
1
0
0
3
14
5
33
29
21
33
18
29
60
95
83
72
92
100
80

Low 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

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)

0
0
0
0
0
1
0
0
3
14
4
31
29
20
28
17
29
60
92
83
72
92
99
80

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
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)

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

Chance of Frost

Temperature (°C)

22
24
25
25
25
25
24
21
19
18
16
16
15
14
14
13
13
12
12
12
14
17
20
22

Feels Like (°C)

23
25
26
26
26
26
25
22
20
19
17
17
15
14
14
13
14
12
11
11
13
16
19
21

Dew Point (°C)

8
8
8
8
8
9
12
12
11
11
10
10
10
9
9
9
9
9
9
9
8
9
10
10

Relative Humidity (%)

40
37
34
33
33
35
46
56
60
64
66
68
70
71
74
75
77
79
80
81
70
60
52
46

Pressure (mb)

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

Ozone (du)

287
287
287
288
288
288
288
287
288
288
288
287
287
286
285
285
285
284
283
282
282
282
282
282

Wednesday 17

Waning Crescent 11%

02:59

17:36

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

Sun - Rise: 06:46, Set: 19:08, Transit: 12:56. Moon - Rise: 02:59, Set: 17:36. Civil Dark: 19:38 - 06:16. Nautical Dark: 20:13 - 05:41. Astro Dark: 20:49 - 05:05

Total Clouds (% Sky Obscured)

40
98
100
100
100
99
95
100
100
99
78
79
75
55
0
19
33
20
22
5
14
24
35
81

Low Clouds (% Sky Obscured)

0
0
0
19
19
16
20
16
24
37
38
43
57
19
0
19
26
20
22
3
2
1
0
10

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
9

High Clouds (% Sky Obscured)

40
98
100
100
100
99
90
100
100
98
69
69
50
40
0
0
20
3
5
2
14
24
35
77

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
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
6

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

Chance of Frost

Temperature (°C)

24
25
26
26
26
26
25
24
21
20
19
18
18
17
16
15
15
14
14
14
15
18
21
23

Feels Like (°C)

23
24
25
25
26
26
25
23
21
20
19
19
17
17
18
17
17
16
15
15
17
19
21
23

Dew Point (°C)

10
11
12
12
12
13
15
16
16
16
16
16
15
15
14
13
13
13
12
12
12
11
10
11

Relative Humidity (%)

43
42
42
41
41
43
52
61
70
76
81
85
85
88
86
87
90
92
90
90
79
61
50
48

Pressure (mb)

1020
1019
1018
1018
1017
1016
1016
1016
1016
1016
1016
1016
1016
1016
1016
1016
1015
1015
1015
1015
1015
1015
1015
1015

Ozone (du)

282
282
281
281
282
282
282
282
281
281
282
281
280
280
282
282
283
284
283
283
284
283
283
283

Thursday 18

Waning Crescent 5%

04:13

18:00

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

Sun - Rise: 06:47, Set: 19:06, Transit: 12:56. Moon - Rise: 04:13, Set: 18:00. Civil Dark: 19:36 - 06:18. Nautical Dark: 20:11 - 05:43. Astro Dark: 20:46 - 05:07

Total Clouds (% Sky Obscured)

93
76
87
74
64
51
68
47
42
35
34
23
13
2
39
50
60
55
34
5
11
8
10
5

Low Clouds (% Sky Obscured)

21
31
33
32
27
33
39
39
34
30
24
16
7
0
12
50
60
55
25
2
4
5
7
5

Medium Clouds (% Sky Obscured)

19
28
20
11
12
19
44
26
22
12
7
8
5
2
39
50
60
55
34
0
5
0
0
0

High Clouds (% Sky Obscured)

89
76
73
53
40
3
0
0
0
0
0
0
0
0
0
20
1
0
0
0
0
0
1
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 (%)

8
7
15
18
18
17
14
7
6
4
0
0
0
0
0
0
0
0
3
1
1
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
9
8
7
6
7
6
9
8
8
6
6
5
5
5
4
4
5
5
7
8
9

Chance of Frost

Temperature (°C)

24
25
26
26
25
25
24
21
19
18
17
16
15
14
13
13
13
12
12
11
11
12
14
15

Feels Like (°C)

23
24
26
25
25
24
25
21
21
19
17
16
15
14
14
12
11
10
10
10
11
11
12
12

Dew Point (°C)

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

Relative Humidity (%)

49
50
49
48
48
50
55
68
80
78
77
78
84
87
87
76
70
70
71
80
76
55
51
46

Pressure (mb)

1015
1014
1014
1013
1013
1013
1013
1014
1014
1015
1016
1016
1017
1017
1017
1018
1018
1018
1019
1020
1020
1021
1021
1021

Ozone (du)

283
282
282
282
283
285
286
286
286
286
284
284
283
282
283
284
283
283
283
284
285
283
283
284

Friday 19

Waning Crescent 1%

05:23

18:20

12 Good
13 Good
14 Good
15 Good
16 Good
17 Good
18 Good
19 Good
20 Good
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 Good
11 Good

Sun - Rise: 06:48, Set: 19:04, Transit: 12:56. Moon - Rise: 05:23, Set: 18:20. Civil Dark: 19:34 - 06:19. Nautical Dark: 20:09 - 05:44. Astro Dark: 20:44 - 05:08

Total Clouds (% Sky Obscured)

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

Low Clouds (% Sky Obscured)

2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
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)

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

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
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)

9
9
9
10
11
11
9
6
5
4
5
5
4
4
4
3
3
4
3
3
3
3
4
5

Chance of Frost

Temperature (°C)

16
17
18
18
17
16
15
13
11
10
9
7
7
6
6
6
5
5
5
5
6
8
11
13

Feels Like (°C)

14
14
15
15
14
13
12
11
10
8
7
6
5
5
5
5
5
4
4
3
3
6
6
8

Dew Point (°C)

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

Relative Humidity (%)

42
37
36
37
38
43
46
54
63
64
67
68
70
72
74
74
76
78
73
70
66
52
43
35

Pressure (mb)

1021
1021
1021
1021
1021
1022
1022
1023
1024
1025
1025
1026
1026
1027
1028
1028
1028
1029
1029
1030
1030
1030
1030
1030

Ozone (du)

284
285
284
284
284
286
285
285
286
287
288
287
284
283
281
282
282
282
282
281
281
280
279
278

Saturday 20

Waning Crescent 1%

06:31

18:37

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

Sun - Rise: 06:49, Set: 19:02, Transit: 12:55. Moon - Rise: 06:31, Set: 18:37. Civil Dark: 19:32 - 06:20. Nautical Dark: 20:06 - 05:45. Astro Dark: 20:42 - 05:10

Total Clouds (% Sky Obscured)

1
1
0
0
1
0
0
0
1
3
5
8
11
14
37
61
85
86
83
81
79
77
75
80

Low 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

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
1
2
3
3
2
2
1
0
0
0
0
0
1
5
14
28

High Clouds (% Sky Obscured)

1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
7
19
46
55
77
75
80

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

Chance of Frost

Temperature (°C)

15
16
17
17
18
18
16
15
13
12
11
9
9
8
7
6
6
6
6
7
7
10
13
16

Feels Like (°C)

8
9
10
17
16
16
17
18
20
11
11
10
9
9
8
5
4
3
3
3
3
5
6
8

Dew Point (°C)

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

Relative Humidity (%)

30
26
23
22
21
21
27
33
41
45
47
50
51
51
51
51
52
52
53
52
53
49
45
42

Pressure (mb)

1029
1029
1028
1027
1027
1026
1026
1026
1026
1026
1026
1026
1026
1026
1026
1026
1025
1025
1025
1025
1025
1024
1024
1023

Ozone (du)

278
278
278
277
277
276
275
274
273
273
273
274
274
274
275
276
276
277
277
278
278
278
278
277

Sunday 21

New Moon 0%

07:38

18:53

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

Sun - Rise: 06:51, Set: 19:00, Transit: 12:55. Moon - Rise: 07:38, Set: 18:53. Civil Dark: 19:30 - 06:21. Nautical Dark: 20:04 - 05:47. Astro Dark: 20:40 - 05:11

Total Clouds (% Sky Obscured)

87
91
92
93
97
88
62
38
55
73
91
94
96
100
100
99
99
98
97
96

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
1
1
1
0
0
0
0
0
0
0
0
7
13
20

Medium Clouds (% Sky Obscured)

42
91
78
57
49
41
29
25
19
16
9
11
12
12
22
36
53
47
37
28

High Clouds (% Sky Obscured)

87
88
86
83
91
68
47
33
53
73
72
75
87
100
98
97
95
91
87
83

ISS Passover

Visibility (miles)

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

Precipitation Type

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

Precipitation Probability (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
11
19
23
47
61
72

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.2
0.4
0.6

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

18
21
23
24
24
25
23
21
19
18
17
16
15
14
14
14
14
13
14
14

Feels Like (°C)

9
10
11
22
23
22
23
24
24
18
17
18
18
18
17
13
13
13
13
13

Dew Point (°C)

6
8
10
11
12
13
13
13
13
13
13
13
13
13
13
12
12
12
12
12

Relative Humidity (%)

43
43
42
44
46
47
52
59
66
71
76
81
85
89
92
92
92
92
89
87

Pressure (mb)

1022
1021
1020
1019
1019
1018
1018
1017
1017
1017
1017
1017
1017
1016
1016
1016
1016
1015
1015
1015

Ozone (du)

276
275
274
274
273
273
272
272
272
272
272
272
272
272
272
272
273
273
273
273

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

Generated: 15/09/25 12:22:39. Forecast: 15/09/25 to 21/09/25. Timezone: UTC-4.00