Clear Outside v1.0 - International Weather Forecasts For Astronomers

Monday 20

Waxing Gibbous 100%

19:23

06:52

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

Sun - Rise: 06:45, Set: 19:02, Transit: 12:53. Moon - Rise: 19:23, Set: 06:52. Civil Dark: 19:36 - 06:12. Nautical Dark: 20:16 - 05:31. Astro Dark: 20:58 - 04:49

Total Clouds (% Sky Obscured)

55
76
48
33
98
37
100
72
15
19
57
2
4
95
100
98
98
98
91
97
99
100
98
100

Low Clouds (% Sky Obscured)

30
70
45
31
98
36
32
28
15
16
5
2
1
0
0
0
0
2
1
55
93
100
76
100

Medium Clouds (% Sky Obscured)

50
44
32
18
20
2
0
1
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0

High Clouds (% Sky Obscured)

0
0
0
0
0
0
100
62
0
4
55
0
3
95
100
98
98
98
91
93
94
82
91
97

ISS Passover

Visibility (miles)

10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10

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 (%)

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

Precipitation Amount (mm)

0.02
0.1
0.01
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)

10
9
7
7
6
5
5
5
4
4
4
5
5
5
5
4
5
5
5
5
5
3
3
4

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

20
19
18
16
15
14
13
13
12
11
11
10
10
8
8
8
9
11
13
15
17
18
19
19

Dew Point (°C)

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

Relative Humidity (%)

67
68
70
75
81
86
88
90
91
93
94
95
95
97
97
96
90
86
80
76
71
66
61
59

Pressure (mb)

1024
1024
1024
1025
1025
1026
1026
1027
1027
1027
1027
1027
1027
1028
1028
1029
1029
1030
1030
1030
1030
1030
1029
1029

Ozone (du)

295
292
289
290
292
292
291
289
288
285
284
284
283
283
282
281
282
282
282
281
282
279
278
278

Tuesday 21

Full Moon 99%

19:37

08:06

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
12 OK
13 Good
14 Good
15 Good

Sun - Rise: 06:47, Set: 19:00, Transit: 12:52. Moon - Rise: 19:37, Set: 08:06. Civil Dark: 19:34 - 06:13. Nautical Dark: 20:14 - 05:33. Astro Dark: 20:56 - 04:51

Total Clouds (% Sky Obscured)

99
98
97
98
98
97
92
98
87
70
65
72
90
87
77
75
77
75
56
56
27
2
1
12

Low Clouds (% Sky Obscured)

69
14
6
4
6
2
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
2
1
12

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)

98
98
97
98
98
97
92
98
87
70
65
72
90
87
77
75
77
75
56
55
27
0
0
0

ISS Passover

Visibility (miles)

10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10

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

Chance of Frost

Temperature (°C)

20
20
19
17
16
15
14
13
13
13
12
12
12
12
11
11
11
13
15
17
18
19
20
21

Feels Like (°C)

20
20
19
17
16
15
14
13
13
13
12
12
12
12
11
11
11
13
15
17
18
19
20
21

Dew Point (°C)

11
12
12
12
12
12
12
12
12
12
12
12
12
11
11
10
10
11
11
12
12
12
12
12

Relative Humidity (%)

58
60
66
72
76
82
88
93
95
97
98
98
98
98
98
94
91
86
79
74
68
63
59
58

Pressure (mb)

1029
1028
1028
1029
1029
1029
1029
1028
1028
1028
1027
1027
1027
1026
1026
1027
1027
1027
1028
1027
1027
1027
1026
1025

Ozone (du)

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

Wednesday 22

Waning Gibbous 96%

19:50

09:18

16 Good
17 Good
18 Good
19 Good
20 Good
21 Good
22 Good
23 OK
00 Good
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

Sun - Rise: 06:49, Set: 18:57, Transit: 12:52. Moon - Rise: 19:50, Set: 09:18. Civil Dark: 19:31 - 06:15. Nautical Dark: 20:11 - 05:35. Astro Dark: 20:53 - 04:53

Total Clouds (% Sky Obscured)

0
1
14
2
4
11
14
38
2
16
47
50
72
98
93
90
90
90
90
90
90
79
79
79

Low Clouds (% Sky Obscured)

0
1
14
2
4
7
7
0
2
0
0
0
0
2
17
9
9
9
9
9
9
52
52
52

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
9
6
6
6
6
6
6
0
0
0

High Clouds (% Sky Obscured)

0
0
0
0
0
4
8
38
0
16
47
50
72
98
91
89
89
89
89
89
89
56
56
56

ISS Passover

Visibility (miles)

10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10

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)

10
10
9
9
9
10
10
10
9
10
10
10
10
11
11
11
12
13
14
16
17
16
16
16

Chance of Frost

Temperature (°C)

21
20
19
18
17
16
15
15
14
13
13
12
12
12
12
12
12
14
15
17
18
19
20
20

Feels Like (°C)

21
20
19
18
17
16
15
15
14
13
13
12
12
12
12
12
12
14
15
17
18
19
20
20

Dew Point (°C)

12
13
13
13
13
13
13
13
13
13
13
12
12
12
11
10
11
11
12
13
12
12
11
11

Relative Humidity (%)

59
62
68
73
77
81
87
92
97
98
100
100
100
99
96
93
91
87
83
78
68
61
58
57

Pressure (mb)

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

Ozone (du)

272
271
271
270
271
272
272
273
274
275
275
274
274
275
277
281
281
280
279
279
279
277
277
277

Thursday 23

Waning Gibbous 91%

20:03

10:30

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

Sun - Rise: 06:50, Set: 18:55, Transit: 12:51. Moon - Rise: 20:03, Set: 10:30. Civil Dark: 19:29 - 06:17. Nautical Dark: 20:09 - 05:37. Astro Dark: 20:50 - 04:55

Total Clouds (% Sky Obscured)

79
79
79
23
23
23
23
23
23
3
3
3
3
3
3
17
17
17
17
17
17
2
2
2

Low Clouds (% Sky Obscured)

52
52
52
9
9
9
9
9
9
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
2
2
2
2
2
2
16
16
16
16
16
16
0
0
0

High Clouds (% Sky Obscured)

56
56
56
16
16
16
16
16
16
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

ISS Passover

Visibility (miles)

10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10

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

Precipitation Amount (mm)

0
0.01
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)

15
14
12
11
11
10
10
9
9
9
8
8
8
8
8
7
7
9
10
11
12
13
14
14

Chance of Frost

Temperature (°C)

19
18
16
15
14
13
13
12
11
11
10
10
10
9
9
8
9
11
13
15
17
19
20
21

Feels Like (°C)

19
18
16
15
14
13
13
12
11
11
10
10
8
8
7
6
8
11
13
15
17
19
20
21

Dew Point (°C)

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

Relative Humidity (%)

59
65
69
70
72
76
82
86
90
94
96
99
100
99
97
95
94
88
82
79
76
71
68
66

Pressure (mb)

1015
1015
1016
1016
1016
1017
1017
1017
1017
1016
1016
1016
1015
1015
1015
1016
1016
1016
1016
1015
1015
1014
1013
1013

Ozone (du)

277
277
278
277
276
276
276
276
275
276
275
274
274
274
273
275
275
274
273
272
272
269
268
266

Friday 24

Waning Gibbous 84%

20:18

11:42

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

Sun - Rise: 06:52, Set: 18:53, Transit: 12:51. Moon - Rise: 20:18, Set: 11:42. Civil Dark: 19:26 - 06:18. Nautical Dark: 20:06 - 05:39. Astro Dark: 20:48 - 04:57

Total Clouds (% Sky Obscured)

2
2
2
0
0
0
0
0
0
10
10
10
10
10
10
32
32
32
32
32
32
67
67
67

Low Clouds (% Sky Obscured)

2
2
2
0
0
0
0
0
0
0
0
0
0
0
0
28
28
28
28
28
28
40
40
40

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
2
2
2

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
9
9
9
9
9
9
6
6
6
6
6
6
47
47
47

ISS Passover

Visibility (miles)

10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10

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
2
2
2
2
0
0
0
0
0
0

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.01
0.01
0.01
0.01
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

15
15
15
14
14
14
14
15
15
14
14
14
14
15
15
15
15
15
15
16
16
16
16
15

Relative Humidity (%)

68
72
78
80
83
89
95
99
99
100
100
100
100
100
100
96
93
90
88
85
80
75
72
72

Pressure (mb)

1012
1012
1012
1011
1011
1011
1011
1011
1011
1012
1012
1012
1012
1012
1012
1013
1014
1014
1014
1014
1014
1014
1014
1013

Ozone (du)

265
265
266
264
263
263
263
263
262
265
265
264
263
262
262
264
264
264
264
265
266
267
269
271

Saturday 25

Waning Gibbous 76%

20:37

12:53

16 Bad
17 Bad
18 Bad
19 OK
20 OK
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
12 Bad
13 Bad
14 Bad
15 Bad

Sun - Rise: 06:54, Set: 18:50, Transit: 12:51. Moon - Rise: 20:37, Set: 12:53. Civil Dark: 19:24 - 06:20. Nautical Dark: 20:04 - 05:40. Astro Dark: 20:45 - 04:59

Total Clouds (% Sky Obscured)

67
67
67
48
48
48
48
48
48
42
42
42
42
42
42
92
92
92
92
92
92
77
77
77

Low Clouds (% Sky Obscured)

40
40
40
6
6
6
6
6
6
0
0
0
0
0
0
64
64
64
64
64
64
66
66
66

Medium Clouds (% Sky Obscured)

2
2
2
0
0
0
0
0
0
0
0
0
0
0
0
24
24
24
24
24
24
6
6
6

High Clouds (% Sky Obscured)

47
47
47
45
45
45
45
45
45
42
42
42
42
42
42
81
81
81
81
81
81
31
31
31

ISS Passover

Visibility (miles)

10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10

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

Precipitation Amount (mm)

0
0
0
0
0.01
0.03
0.05
0.03
0.01
0
0
0
0
0
0
0
0
0
0
0
0.01
0.01
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

20
20
19
19
18
17
16
16
16
16
16
15
14
13
12
12
13
15
16
17
19
20
20
21

Feels Like (°C)

20
20
19
19
18
17
17
16
17
17
16
15
14
13
12
12
13
15
16
17
19
20
20
21

Dew Point (°C)

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

Relative Humidity (%)

73
76
77
80
84
91
97
99
100
100
100
100
100
100
100
100
98
96
95
90
86
79
74
72

Pressure (mb)

1013
1013
1013
1013
1013
1014
1014
1014
1014
1013
1013
1014
1013
1013
1013
1013
1013
1013
1013
1013
1013
1013
1013
1013

Ozone (du)

272
273
273
273
273
272
272
272
273
275
276
278
279
281
282
283
282
281
280
280
279
279
280
280

Sunday 26

Waning Gibbous 68%

21:00

14:01

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
12 Bad
13 Good
14 Good
15 Good

Sun - Rise: 06:55, Set: 18:48, Transit: 12:50. Moon - Rise: 21:00, Set: 14:01. Civil Dark: 19:22 - 06:22. Nautical Dark: 20:01 - 05:42. Astro Dark: 20:42 - 05:01

Total Clouds (% Sky Obscured)

77
77
77
63
63
63
63
63
63
87
87
87
87
87
87
100
100
100
100
100
100
17
17
17

Low Clouds (% Sky Obscured)

66
66
66
53
53
53
53
53
53
22
22
22
22
22
22
20
20
20
20
20
20
17
17
17

Medium Clouds (% Sky Obscured)

6
6
6
39
39
39
39
39
39
36
36
36
36
36
36
100
100
100
100
100
100
0
0
0

High Clouds (% Sky Obscured)

31
31
31
0
0
0
0
0
0
81
81
81
81
81
81
0
0
0
0
0
0
0
0
0

ISS Passover

Visibility (miles)

10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10

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

Precipitation Probability (%)

0
2
4
10
11
8
4
2
2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Amount (mm)

0
0.02
0.07
0.12
0.1
0.06
0.03
0.01
0.01
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

11
10
8
7
7
7
7
7
6
6
6
6
6
6
6
7
7
7
8
8
8
8
8
8

Chance of Frost

Temperature (°C)

20
19
17
15
14
14
14
13
12
12
11
11
10
10
10
11
12
13
14
15
16
18
18
19

Feels Like (°C)

20
19
17
15
14
14
14
13
12
12
11
11
10
10
10
11
12
13
14
15
16
18
18
19

Dew Point (°C)

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

Relative Humidity (%)

73
79
85
89
91
92
95
100
100
100
100
100
100
100
100
100
97
93
87
82
74
64
59
57

Pressure (mb)

1013
1013
1013
1014
1014
1014
1014
1014
1015
1015
1015
1014
1014
1015
1015
1015
1015
1015
1015
1015
1015
1015
1014
1014

Ozone (du)

280
280
279
278
276
275
274
275
276
278
278
279
279
279
279
278
278
277
276
276
277
277
277
277

Forecast for Bourn, Cambridgeshire, UK (52.20,-0.05)

Generated: 20/09/21 16:13:10. Forecast: 20/09/21 to 26/09/21. Timezone: UTC+1.00