Clear Outside v1.0 - International Weather Forecasts For Astronomers

Friday 19

Waning Crescent 6%

04:57

18:26

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

Sun - Rise: 06:44, Set: 19:04, Transit: 12:53. Moon - Rise: 04:57, Set: 18:26. Civil Dark: 19:38 - 06:11. Nautical Dark: 20:18 - 05:31. Astro Dark: 20:59 - 04:50

Total Clouds (% Sky Obscured)

87
92
59
25
95
95
28
5
5
6
6
9
0
33
51
57
100
100
68
100
100
100
100
100

Low Clouds (% Sky Obscured)

41
26
3
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
6
22
38

Medium Clouds (% Sky Obscured)

0
0
0
0
0
4
6
0
0
0
0
4
0
17
51
57
71
85
68
91
65
42
37
84

High Clouds (% Sky Obscured)

37
35
12
13
70
57
15
5
5
6
5
9
0
25
20
42
68
68
48
100
100
100
100
100

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)

8
9
10
11
12
11
11
10
7
6
4
4
4
3
3
3
2
2
3
3
5
6
6
7

Chance of Frost

Temperature (°C)

19
20
22
24
25
25
25
24
23
21
19
18
18
17
16
16
16
16
16
16
16
16
16
17

Feels Like (°C)

18
20
21
23
23
23
23
22
21
19
19
19
17
17
15
15
15
15
15
15
14
15
14
16

Dew Point (°C)

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

Relative Humidity (%)

69
57
44
36
33
32
33
36
42
47
50
53
55
57
56
56
55
56
57
59
60
65
68
68

Pressure (mb)

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

Ozone (du)

258
259
260
259
260
260
259
259
259
260
261
261
261
261
261
261
261
261
261
262
261
261
261
261

Saturday 20

Waning Crescent 2%

06:12

18:37

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 OK
00 OK
01 OK
02 Bad
03 OK
04 Bad
05 OK
06 OK
07 OK
08 Bad
09 Bad

Sun - Rise: 06:46, Set: 19:02, Transit: 12:53. Moon - Rise: 06:12, Set: 18:37. Civil Dark: 19:35 - 06:12. Nautical Dark: 20:15 - 05:33. Astro Dark: 20:56 - 04:52

Total Clouds (% Sky Obscured)

100
80
95
100
97
100
99
100
93
95
97
59
57
34
23
27
46
44
50
35
36
46
67
80

Low Clouds (% Sky Obscured)

58
60
89
67
48
82
80
81
74
54
69
59
52
34
23
27
43
35
40
24
31
39
59
80

Medium Clouds (% Sky Obscured)

32
50
22
29
26
75
97
100
3
0
0
0
0
0
0
0
0
0
0
0
0
8
17
18

High Clouds (% Sky Obscured)

100
35
45
95
80
100
81
99
80
75
75
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
34
3
4
21
55
40
4
9
0
0
0
1
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)

7
9
11
12
14
14
16
13
18
15
16
16
16
14
13
12
10
7
5
4
4
5
6
6

Chance of Frost

Temperature (°C)

18
19
20
21
21
21
20
19
19
18
18
16
15
14
13
12
11
11
11
11
10
10
10
11

Feels Like (°C)

17
17
17
18
18
18
16
16
15
16
16
13
12
10
10
10
10
10
10
9
9
8
8
10

Dew Point (°C)

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

Relative Humidity (%)

67
61
50
44
43
43
47
59
69
71
78
72
75
68
69
72
76
76
75
73
72
67
66
63

Pressure (mb)

1011
1010
1010
1009
1009
1008
1008
1008
1007
1007
1008
1009
1010
1011
1012
1013
1014
1014
1015
1016
1016
1017
1018
1019

Ozone (du)

263
263
262
263
264
265
266
266
270
276
278
278
280
281
284
286
289
290
290
291
293
294
296
297

Sunday 21

New Moon 0%

07:25

18:47

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

Sun - Rise: 06:47, Set: 19:00, Transit: 12:53. Moon - Rise: 07:25, Set: 18:47. Civil Dark: 19:33 - 06:14. Nautical Dark: 20:13 - 05:35. Astro Dark: 20:54 - 04:53

Total Clouds (% Sky Obscured)

86
90
88
91
83
85
83
63
49
50
14
48
54
34
36
37
37
36
38
46
49
46
39
33

Low Clouds (% Sky Obscured)

77
65
68
70
48
45
35
5
3
0
0
22
35
34
36
37
37
36
38
39
37
41
38
33

Medium Clouds (% Sky Obscured)

15
18
20
26
65
83
18
20
20
50
9
5
7
3
3
0
3
3
5
10
19
17
14
9

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)

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
1
0
0
1
1
0
0
0
0
2
0
1
0
0
0
0
0
1
0
0
2
1
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
8
9
9
9
9
10
10
10
10
11
10
10
11
10
10
9
9
9
9
8
9
9
11

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

59
54
54
49
46
43
42
39
38
42
53
63
64
62
66
66
67
66
60
61
68
73
70
64

Pressure (mb)

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

Ozone (du)

298
299
300
301
304
306
306
306
307
309
312
313
313
314
315
315
315
316
319
321
322
323
322
321

Monday 22

Waxing Crescent 1%

08:37

18:57

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

Sun - Rise: 06:49, Set: 18:57, Transit: 12:52. Moon - Rise: 08:37, Set: 18:57. Civil Dark: 19:31 - 06:16. Nautical Dark: 20:10 - 05:36. Astro Dark: 20:51 - 04:55

Total Clouds (% Sky Obscured)

43
54
75
86
85
85
85
75
59
52
43
30
47
66
83
93
81
80
89
77
77
77
76
95

Low Clouds (% Sky Obscured)

36
39
42
45
47
51
53
51
51
35
18
0
19
38
52
66
71
73
74
61
59
75
76
90

Medium Clouds (% Sky Obscured)

25
40
56
46
38
23
13
6
0
5
12
18
33
54
70
62
59
48
39
43
47
54
57
57

High Clouds (% Sky Obscured)

18
37
53
51
53
51
30
16
0
2
3
5
26
56
72
66
59
54
68
74
77
77
76
95

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
Very Light Rain
Light Rain
Light Rain

Precipitation Probability (%)

4
4
2
3
2
0
2
1
2
4
2
1
7
7
2
28
40
42
38
33
31
59
73
80

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.3
0.5
0.5

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

9
10
12
12
12
12
12
10
10
10
9
9
9
9
9
9
7
9
8
8
8
8
8
9

Dew Point (°C)

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

Relative Humidity (%)

54
46
41
36
32
30
30
34
41
41
47
55
60
63
64
64
64
66
68
71
72
72
69
66

Pressure (mb)

1028
1028
1027
1027
1027
1027
1026
1026
1027
1027
1027
1027
1028
1027
1027
1026
1026
1025
1025
1025
1025
1025
1024
1024

Ozone (du)

320
319
318
316
316
316
315
314
314
313
313
312
311
310
309
310
311
312
314
315
315
316
315
314

Tuesday 23

Waxing Crescent 3%

09:50

19:07

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
01 Bad
02 Bad
03 Bad
04 Bad
05 Bad
06 Bad
07 Bad
08 Bad
09 Bad

Sun - Rise: 06:51, Set: 18:55, Transit: 12:52. Moon - Rise: 09:50, Set: 19:07. Civil Dark: 19:28 - 06:17. Nautical Dark: 20:08 - 05:38. Astro Dark: 20:49 - 04:57

Total Clouds (% Sky Obscured)

98
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)

81
78
71
65
57
52
53
57
61
49
51
52
53
55
56
49
42
40
61
73
89
93
96
100

Medium Clouds (% Sky Obscured)

81
100
100
100
92
61
100
100
100
100
100
100
95
91
86
71
56
44
65
83
99
98
95
94

High Clouds (% Sky Obscured)

98
100
100
100
80
100
100
100
100
100
100
100
100
100
100
100
100
100
98
96
94
96
98
100

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
8
7
8
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
Light Rain
Moderate Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Very Light Rain
None
None
Very Light Rain
Very Light Rain
None
None
None
None
None
None
None
Very Light Rain
Very Light Rain
Very Light Rain
None

Precipitation Probability (%)

95
95
95
95
95
95
95
95
80
48
55
60
59
50
33
41
41
34
46
54
62
61
56
50

Precipitation Amount (mm)

1.1
1.9
2.7
1.9
1.1
0.7
0.7
0.6
0.3
0
0
0.2
0.2
0
0
0
0
0
0
0
0.2
0.2
0.2
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

12
12
13
13
13
13
13
13
13
13
13
13
12
12
12
12
12
12
12
12
12
12
12
12

Feels Like (°C)

8
8
8
9
9
9
9
9
9
9
10
10
10
9
10
9
9
9
9
9
9
9
9
9

Dew Point (°C)

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

Relative Humidity (%)

62
57
50
51
52
48
53
55
58
59
63
68
72
76
80
84
81
81
80
80
81
81
80
80

Pressure (mb)

1024
1023
1023
1023
1022
1022
1021
1021
1021
1022
1023
1023
1023
1023
1023
1023
1022
1022
1022
1022
1022
1022
1022
1022

Ozone (du)

314
314
316
314
317
312
310
310
309
307
307
306
306
306
305
305
305
305
305
305
305
305
305
305

Wednesday 24

Waxing Crescent 7%

No Rise

19:19

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
01 Bad
02 Bad
03 Bad
04 Bad
05 Bad
06 Bad
07 Bad
08 Bad
09 Bad

Sun - Rise: 06:52, Set: 18:53, Transit: 12:52. Moon - Rise: No Rise, Set: 19:19. Civil Dark: 19:26 - 06:19. Nautical Dark: 20:05 - 05:40. Astro Dark: 20:46 - 04:59

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
93
82
73
79
85
91
94
98
100
98
96
94
95
96
97

Low Clouds (% Sky Obscured)

99
98
97
92
84
77
80
84
89
76
63
50
52
54
57
53
49
45
43
40
38
35
36
34

Medium Clouds (% Sky Obscured)

96
98
100
94
87
80
86
93
100
93
82
73
77
66
54
66
80
92
93
94
94
95
96
96

High Clouds (% Sky Obscured)

78
53
25
48
74
100
100
100
100
75
57
30
47
54
55
70
86
100
82
63
44
39
27
22

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

Precipitation Probability (%)

55
61
68
58
53
61
62
58
54
39
43
72
64
52
35
31
28
26
22
17
13
15
15
14

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

8
9
9
9
10
10
10
10
10
9
10
9
9
9
10
10
9
9
9
9
9
9
9
10

Relative Humidity (%)

79
77
76
76
78
79
80
79
78
76
79
79
81
83
86
87
86
87
85
87
85
87
87
87

Pressure (mb)

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

Ozone (du)

305
305
305
305
305
305
305
305
305
304
305
305
305
305
304
303
303
303
302
303
305
306
305
305

Thursday 25

Waxing Crescent 13%

11:04

19:35

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: 06:54, Set: 18:51, Transit: 12:51. Moon - Rise: 11:04, Set: 19:35. Civil Dark: 19:24 - 06:21. Nautical Dark: 20:03 - 05:41. Astro Dark: 20:43 - 05:01

Total Clouds (% Sky Obscured)

97
98
99
99
100
100
94
93
90
94
97
100
100
100
100

Low Clouds (% Sky Obscured)

49
64
79
73
70
66
63
68
72
77
79
86
89
89
90

Medium Clouds (% Sky Obscured)

92
88
83
77
70
64
44
23
3
10
19
27
35
49
50

High Clouds (% Sky Obscured)

39
59
78
84
89
93
77
60
40
58
75
93
94
95
86

ISS Passover

Visibility (miles)

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

Precipitation Type

None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

31
22
24
32
40
47
47
43
31
27
20
3
10
10
5

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

12
14
15
17
16
16
16
16
15
14
14
13
13
13
13

Feels Like (°C)

10
9
10
9
15
14
14
14
13
13
11
11
11
11
10

Dew Point (°C)

11
10
10
9
9
9
9
8
8
7
8
8
8
9
9

Relative Humidity (%)

89
78
69
62
61
60
60
60
60
62
65
69
72
75
76

Pressure (mb)

1019
1018
1018
1018
1018
1018
1017
1017
1018
1018
1018
1018
1018
1018
1018

Ozone (du)

304
304
303
302
302
302
302
301
300
299
299
298
298
298
297

Forecast for Harringay, Greater London, United Kingdom (51.59,-0.10)

Generated: 19/09/25 10:11:22. Forecast: 19/09/25 to 25/09/25. Timezone: UTC+1.00