Clear Outside v1.0 - International Weather Forecasts For Astronomers

Monday 20

Waxing Gibbous 100%

19:30

06:59

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

Sun - Rise: 06:52, Set: 19:09, Transit: 12:59. Moon - Rise: 19:30, Set: 06:59. Civil Dark: 19:42 - 06:19. Nautical Dark: 20:22 - 05:40. Astro Dark: 21:03 - 04:58

Total Clouds (% Sky Obscured)

12
13
5
1
8
2
0
100
100
99
98
21
0
84
85
0
91
90
88
94
95
85
100
100

Low Clouds (% Sky Obscured)

12
13
5
1
8
2
0
0
2
2
4
2
0
0
0
0
9
11
31
31
24
28
100
100

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
0
0
100
100
99
98
20
0
84
85
0
90
88
86
91
92
80
67
92

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
2
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
0.01
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

12
12
12
10
7
7
6
6
6
6
6
4
4
4
4
4
4
3
3
4
4
5
5
4

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

19
20
20
20
18
16
15
13
12
12
11
10
9
9
8
8
7
7
9
11
13
15
17
18

Dew Point (°C)

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

Relative Humidity (%)

57
53
52
55
61
68
73
79
86
90
92
94
94
95
95
96
96
95
90
85
78
74
70
66

Pressure (mb)

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

Ozone (du)

300
299
297
294
292
295
294
293
293
292
291
286
285
285
285
286
287
284
285
284
284
283
283
280

Tuesday 21

Full Moon 99%

19:44

08:13

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

Sun - Rise: 06:54, Set: 19:07, Transit: 12:59. Moon - Rise: 19:44, Set: 08:13. Civil Dark: 19:40 - 06:21. Nautical Dark: 20:19 - 05:41. Astro Dark: 21:01 - 05:00

Total Clouds (% Sky Obscured)

99
99
97
96
98
98
94
95
95
80
42
5
12
13
27
70
92
100
100
95
97
100
100
99

Low Clouds (% Sky Obscured)

89
85
38
0
1
0
0
0
0
0
0
0
0
0
1
6
63
100
100
94
97
100
100
99

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)

94
95
95
96
98
98
94
95
95
80
42
5
12
13
26
67
78
72
41
9
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
34
51
58
6
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
4
4
5
4
4
4
5
5
5
5
6
6
6
6
6
5
5
7
8
8
9
9

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

62
59
59
62
67
73
79
85
90
94
97
98
100
100
100
100
100
100
95
89
82
76
70
67

Pressure (mb)

1030
1029
1029
1029
1028
1029
1029
1029
1029
1029
1029
1029
1028
1028
1027
1027
1027
1028
1028
1028
1028
1028
1028
1027

Ozone (du)

279
278
277
277
275
274
274
274
274
274
274
274
274
274
274
274
274
274
275
274
274
274
273
274

Wednesday 22

Waning Gibbous 96%

19:57

09:25

14 Bad
15 Bad
16 Bad
17 Bad
18 OK
19 Good
20 Good
21 Bad
22 OK
23 OK
00 Good
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

Sun - Rise: 06:56, Set: 19:04, Transit: 12:59. Moon - Rise: 19:57, Set: 09:25. Civil Dark: 19:37 - 06:22. Nautical Dark: 20:17 - 05:43. Astro Dark: 20:58 - 05:02

Total Clouds (% Sky Obscured)

100
100
100
88
22
15
10
41
27
16
11
73
73
73
73
73
73
87
87
87
87
87
87
45

Low Clouds (% Sky Obscured)

100
100
100
88
22
15
10
5
1
3
3
2
2
2
2
2
2
26
26
26
26
26
26
45

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
10
10
10
10
10
10
0

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
38
27
13
9
73
73
73
73
73
73
82
82
82
82
82
82
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
3
3
2
2
1

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.02
0.01
0.02
0.01
0.01

Wind Speed/Direction (mph)

9
10
10
10
9
9
9
8
8
8
7
8
8
9
9
10
10
10
11
13
14
16
16
15

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

12
13
13
13
13
12
12
12
12
12
12
12
12
12
12
12
12
11
11
12
13
13
13
13

Relative Humidity (%)

63
62
64
67
73
78
83
88
92
97
99
100
100
100
99
99
99
95
92
90
87
82
77
67

Pressure (mb)

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

Ozone (du)

274
274
273
273
273
271
271
271
271
273
275
275
276
275
274
274
276
279
279
278
277
276
276
275

Thursday 23

Waning Gibbous 91%

20:11

10:36

14 OK
15 OK
16 OK
17 OK
18 OK
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
12 Good
13 Bad

Sun - Rise: 06:57, Set: 19:02, Transit: 12:58. Moon - Rise: 20:11, Set: 10:36. Civil Dark: 19:35 - 06:24. Nautical Dark: 20:14 - 05:45. Astro Dark: 20:55 - 05:04

Total Clouds (% Sky Obscured)

45
45
45
45
45
0
0
0
0
0
0
2
2
2
2
2
2
0
0
0
0
0
0
80

Low Clouds (% Sky Obscured)

45
45
45
45
45
0
0
0
0
0
0
2
2
2
2
2
2
0
0
0
0
0
0
80

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
0
0
0
0
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
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)

16
16
14
14
13
11
10
8
6
6
5
5
6
6
6
7
7
6
7
9
11
12
12
14

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

19
19
19
18
17
15
14
12
12
11
10
9
8
8
8
7
7
6
8
12
14
16
18
20

Dew Point (°C)

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

Relative Humidity (%)

63
60
61
66
72
76
82
85
89
95
97
98
98
99
100
100
100
100
95
91
84
81
76
71

Pressure (mb)

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

Ozone (du)

275
275
275
275
276
276
276
276
277
277
275
274
273
272
271
271
270
272
272
272
271
271
270
268

Friday 24

Waning Gibbous 84%

20:27

11:47

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

Sun - Rise: 06:59, Set: 19:00, Transit: 12:58. Moon - Rise: 20:27, Set: 11:47. Civil Dark: 19:33 - 06:26. Nautical Dark: 20:12 - 05:46. Astro Dark: 20:53 - 05:06

Total Clouds (% Sky Obscured)

80
80
80
80
80
6
6
6
6
6
6
2
2
2
2
2
2
2
2
2
2
2
2
62

Low Clouds (% Sky Obscured)

80
80
80
80
80
6
6
6
6
6
6
0
0
0
0
0
0
2
2
2
2
2
2
54

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
0
0
0
0
0
0
2
2
2
2
2
2
0
0
0
0
0
0
17

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
2
3
3
4
5
4
3
2
2
0
0

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0.01
0.02
0.02
0.03
0.04
0.03
0.01
0.01
0.01
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

20
20
20
19
18
16
15
15
15
15
15
15
15
15
16
16
16
15
16
16
17
18
19
20

Feels Like (°C)

20
20
20
19
18
16
15
15
15
15
15
15
15
16
16
16
16
16
16
16
17
18
19
20

Dew Point (°C)

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

Relative Humidity (%)

67
69
70
76
82
86
91
93
98
100
100
100
100
100
100
100
100
100
97
95
92
88
83
77

Pressure (mb)

1015
1014
1014
1013
1013
1013
1013
1013
1013
1013
1012
1014
1013
1013
1013
1013
1013
1013
1013
1013
1013
1013
1013
1013

Ozone (du)

267
267
267
267
267
265
264
264
264
263
263
266
266
265
264
263
263
263
263
262
262
263
265
267

Saturday 25

Waning Gibbous 76%

20:46

12:57

14 Bad
15 Bad
16 Bad
17 Bad
18 Bad
19 OK
20 OK
21 OK
22 OK
23 OK
00 OK
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

Sun - Rise: 07:00, Set: 18:57, Transit: 12:58. Moon - Rise: 20:46, Set: 12:57. Civil Dark: 19:30 - 06:27. Nautical Dark: 20:10 - 05:48. Astro Dark: 20:50 - 05:08

Total Clouds (% Sky Obscured)

62
62
62
62
62
23
23
23
23
23
23
88
88
88
88
88
88
98
98
98
98
98
98
85

Low Clouds (% Sky Obscured)

54
54
54
54
54
13
13
13
13
13
13
0
0
0
0
0
0
2
2
2
2
2
2
85

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
2
2
2
2
2
2
34
34
34
34
34
34
9

High Clouds (% Sky Obscured)

17
17
17
17
17
12
12
12
12
12
12
88
88
88
88
88
88
97
97
97
97
97
97
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
Very Light Rain
Very Light Rain
Very Light Rain
Very Light Rain
Very Light Rain
Very Light Rain
None
None
None

Precipitation Probability (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
3
5
11
21
28
27
17
7
3
2
0

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0.01
0.02
0.08
0.22
0.32
0.24
0.1
0.03
0.01
0.01
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

16
16
17
16
15
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14

Relative Humidity (%)

73
74
77
80
82
84
88
93
96
100
100
100
100
100
100
100
100
100
100
98
96
91
83
74

Pressure (mb)

1013
1012
1012
1012
1012
1012
1013
1013
1013
1013
1013
1013
1012
1012
1012
1012
1012
1012
1012
1013
1013
1013
1013
1013

Ozone (du)

268
270
272
274
277
278
279
279
279
279
279
278
277
276
275
274
274
274
273
271
270
271
273
275

Sunday 26

Waning Gibbous 68%

21:10

14:04

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 OK
08 OK
09 OK
10 OK
11 OK
12 OK
13 OK

Sun - Rise: 07:02, Set: 18:55, Transit: 12:57. Moon - Rise: 21:10, Set: 14:04. Civil Dark: 19:28 - 06:29. Nautical Dark: 20:07 - 05:50. Astro Dark: 20:48 - 05:10

Total Clouds (% Sky Obscured)

85
85
85
85
85
96
96
96
96
96
96
100
100
100
100
100
100
15
15
15
15
15
15
32

Low Clouds (% Sky Obscured)

85
85
85
85
85
21
21
21
21
21
21
100
100
100
100
100
100
0
0
0
0
0
0
24

Medium Clouds (% Sky Obscured)

9
9
9
9
9
8
8
8
8
8
8
100
100
100
100
100
100
15
15
15
15
15
15
22

High Clouds (% Sky Obscured)

0
0
0
0
0
95
95
95
95
95
95
93
93
93
93
93
93
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
Very Light Rain
Very Light Rain
Very Light Rain
None
None
None
Very Light Rain
Very Light Rain
Very Light Rain
Very Light Rain
Very Light Rain
Very Light Rain
None
None

Precipitation Probability (%)

0
0
0
0
0
0
0
0
0
0
6
8
7
2
2
5
8
11
15
18
17
9
3
0

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0.01
0.02
0.02
0.01
0.01
0.01
0.03
0.07
0.11
0.17
0.18
0.09
0.01
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

13
13
12
13
13
13
13
12
12
12
12
12
12
12
12
12
12
12
13
13
14
13
13
12

Relative Humidity (%)

67
63
64
68
76
82
87
93
95
100
100
100
100
100
100
100
100
100
98
97
91
86
77
69

Pressure (mb)

1013
1013
1012
1013
1013
1014
1014
1014
1014
1014
1015
1015
1014
1014
1014
1014
1014
1014
1014
1014
1014
1014
1014
1014

Ozone (du)

275
276
277
278
280
281
282
284
285
287
289
290
290
289
287
286
284
283
282
281
281
281
282
282

Forecast for Swindon, Wiltshire, UK (51.56,-1.78)

Generated: 20/09/21 13:37:03. Forecast: 20/09/21 to 26/09/21. Timezone: UTC+1.00