Clear Outside v1.0 - International Weather Forecasts For Astronomers

Saturday 18

Waxing Gibbous 80%

16:29

03:25

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 OK
09 OK
10 OK
11 Bad
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad
17 Bad
18 OK
19 OK

Sun - Rise: 04:58, Set: 20:49, Transit: 12:54. Moon - Rise: 16:29, Set: 03:25. Civil Dark: 21:32 - 04:15. Nautical Dark: 22:32 - 03:14. Astro Dark: 00:17 - 01:22

Total Clouds (% Sky Obscured)

40
47
51
90
95
81
87
57
87
86
55
44
20
24
22
21
42
47
56
53
52
49
0
0

Low Clouds (% Sky Obscured)

45
25
19
33
47
58
69
54
78
80
68
63
32
35
31
31
38
19
46
28
42
30
0
0

Medium Clouds (% Sky Obscured)

20
21
36
34
29
23
21
31
24
18
19
0
0
3
0
0
28
36
39
41
37
33
0
0

High Clouds (% Sky Obscured)

59
5
24
73
79
4
3
5
5
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
4
4
3
7
8
6
9
8
4

Fog (%)

0
0
0
0
0
0
0
0
2
13
6
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
Very Light Rain
None
None
None
None
None

Precipitation Probability (%)

0
0
0
4
1
1
0
0
0
0
0
0
0
0
18
33
44
50
44
41
37
31
17
11

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.2
0.3
0.2
0.2
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

92
93
96
95
96
96
96
96
96
96
96
93
89
83
78
73
68
69
73
70
74
76
80
82

Pressure (mb)

1012
1013
1013
1013
1014
1014
1013
1013
1013
1013
1013
1014
1014
1014
1014
1014
1014
1014
1014
1013
1013
1013
1013
1014

Ozone (du)

381
383
383
383
385
386
387
387
387
387
388
388
390
391
391
391
391
390
390
391
393
394
395
394

Sunday 19

Waxing Gibbous 87%

17:41

03:35

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

Sun - Rise: 04:56, Set: 20:51, Transit: 12:54. Moon - Rise: 17:41, Set: 03:35. Civil Dark: 21:34 - 04:13. Nautical Dark: 22:34 - 03:12. Astro Dark: 00:27 - 01:06

Total Clouds (% Sky Obscured)

0
0
0
0
0
0
14
22
37
43
48
54
51
41
35
45
56
73
69
64
66
68
59
13

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
20
35
60
65
66
65
54
42
38
43
55
71
66
52
47
42
17
0

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
2
2
41
48
38
6

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
1
2
2
0
4
3
12
21
24
28
3

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
7
2
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
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
8
10
0
1
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
7
7
7
7
8
9
11
11
11
11
11
11
11
11
11
11
12
11
11

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

18
15
13
11
10
9
8
8
7
7
7
8
8
10
12
14
15
16
16
16
17
17
17
16

Dew Point (°C)

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

Relative Humidity (%)

89
95
96
93
90
87
87
90
93
96
96
95
91
86
78
74
71
71
72
71
71
72
78
81

Pressure (mb)

1014
1015
1015
1015
1015
1015
1015
1015
1015
1014
1015
1015
1015
1015
1014
1014
1014
1013
1013
1012
1012
1011
1011
1011

Ozone (du)

395
394
394
394
394
394
395
394
393
393
394
395
396
397
398
398
397
397
398
399
400
401
401
401

Monday 20

Waxing Gibbous 93%

18:56

03:46

20 OK
21 Bad
22 Good
23 Good
00 Good
01 OK
02 OK
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

Sun - Rise: 04:55, Set: 20:52, Transit: 12:54. Moon - Rise: 18:56, Set: 03:46. Civil Dark: 21:35 - 04:11. Nautical Dark: 22:36 - 03:10. Astro Dark: 00:42 - N/A

Total Clouds (% Sky Obscured)

33
40
1
0
8
20
31
75
80
82
85
92
92
100
100
98
84
89
94
100
100
100
100
100

Low Clouds (% Sky Obscured)

0
0
0
0
10
20
33
44
45
51
59
72
76
84
89
89
73
75
70
63
48
24
13
12

Medium Clouds (% Sky Obscured)

13
28
2
0
0
0
0
0
2
0
0
2
3
2
2
6
16
51
62
70
76
83
89
93

High Clouds (% Sky Obscured)

8
0
0
0
0
2
0
36
40
45
50
50
83
99
69
69
47
62
81
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
1
1
2
1
0
0
0
0
0
0
0
8
4
11
11
15
11
11
29
22

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
7
7
7
7
6
6
6
6
6
6
7
8
7
7
6
6
6
6
6
6
7
8
8

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

14
12
10
9
9
8
8
7
6
6
7
8
10
12
13
14
15
17
17
18
19
18
17
16

Dew Point (°C)

13
12
11
9
9
8
8
8
8
8
8
9
10
11
12
12
13
13
14
15
16
16
16
16

Relative Humidity (%)

85
90
93
93
95
95
95
96
96
95
95
90
87
84
80
79
77
76
78
78
80
84
86
89

Pressure (mb)

1011
1012
1012
1011
1011
1011
1010
1010
1010
1009
1009
1009
1009
1009
1009
1009
1009
1008
1008
1008
1008
1008
1008
1008

Ozone (du)

400
399
399
399
398
398
399
398
399
396
394
393
393
393
392
390
388
385
386
386
384
385
384
384

Tuesday 21

Waxing Gibbous 97%

No Rise

04:00

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 Bad
14 Bad
15 Bad
16 Bad
17 Bad
18 Bad
19 Bad

Sun - Rise: 04:54, Set: 20:54, Transit: 12:54. Moon - Rise: No Rise, Set: 04:00. Civil Dark: 21:37 - 04:10. Nautical Dark: 22:39 - 03:08. Astro Dark: N/A - N/A

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
98

Low Clouds (% Sky Obscured)

11
15
20
20
25
35
49
59
70
83
97
96
94
92
88
84
81
83
84
86
85
84
82
82

Medium Clouds (% Sky Obscured)

96
100
100
100
100
97
95
92
95
98
100
100
100
100
100
100
100
99
70
68
75
74
64
61

High Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
89
95
100
98
97
95
58

ISS Passover

Visibility (miles)

9
9
9
9
7
5
2
2
3
3
2
2
5
8
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
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Very Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Very Light Rain

Precipitation Probability (%)

14
17
11
30
48
80
95
95
86
89
95
95
93
72
95
95
95
95
95
95
95
91
83
74

Precipitation Amount (mm)

0
0
0
0
0
0.6
0.9
0.8
0.4
0.4
0.6
1
0.4
0.2
0.6
0.7
0.7
0.6
0.6
0.7
0.6
0.5
0.5
0.3

Wind Speed/Direction (mph)

7
6
6
5
5
7
9
11
12
12
13
14
15
15
16
16
16
18
17
16
16
16
14
14

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

16
14
13
12
12
10
9
9
9
9
8
8
8
9
9
9
10
9
9
10
10
10
10
11

Dew Point (°C)

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

Relative Humidity (%)

92
93
93
93
95
95
96
96
96
96
96
96
96
96
95
95
95
93
93
93
92
92
90
89

Pressure (mb)

1008
1008
1009
1009
1008
1008
1007
1007
1006
1006
1006
1006
1006
1006
1006
1005
1005
1005
1005
1005
1005
1005
1005
1005

Ozone (du)

383
383
381
381
383
383
383
383
383
383
382
378
378
377
375
375
374
376
377
376
378
378
377
374

Wednesday 22

Waxing Gibbous 100%

20:15

04:19

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 Bad
14 Bad
15 Bad
16 Bad
17 Bad
18 Bad
19 Bad

Sun - Rise: 04:53, Set: 20:55, Transit: 12:54. Moon - Rise: 20:15, Set: 04:19. Civil Dark: 21:39 - 04:09. Nautical Dark: 22:41 - 03:06. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

100
98
96
100
100
100
84
62
66
65
69
69
74
77
80
81
83
85
90
96
86
77
68
65

Low Clouds (% Sky Obscured)

94
97
93
100
100
96
84
65
65
66
65
60
61
63
63
61
58
67
73
82
73
65
56
58

Medium Clouds (% Sky Obscured)

59
59
55
50
45
43
39
38
39
44
50
1
1
0
14
28
46
44
37
31
38
43
47
46

High Clouds (% Sky Obscured)

55
24
22
26
32
31
6
7
21
32
50
38
49
60
43
25
6
5
4
2
9
17
24
20

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
8
8
8
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

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

Precipitation Probability (%)

61
39
43
53
61
48
37
42
58
69
63
0
0
0
29
42
50
49
49
48
47
53
61
59

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

14
14
14
14
14
13
13
13
13
12
12
13
13
14
15
16
17
18
17
17
17
16
16
15

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

89
86
87
92
87
86
92
95
96
96
95
90
86
82
78
78
79
79
78
78
78
78
81
82

Pressure (mb)

1005
1005
1006
1006
1006
1005
1005
1005
1006
1006
1006
1006
1012
1012
1012
1013
1013
1014
1014
1015
1015
1015
1015
1016

Ozone (du)

372
368
366
367
368
364
359
355
353
353
354
355
359
362
366
365
365
364
366
368
370
373
377
380

Thursday 23

Full Moon 100%

21:34

04:46

20 Bad
21 Bad
22 Bad
23 Bad
00 Bad
01 Bad
02 Bad
03 OK
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

Sun - Rise: 04:51, Set: 20:56, Transit: 12:55. Moon - Rise: 21:34, Set: 04:46. Civil Dark: 21:40 - 04:07. Nautical Dark: 22:43 - 03:04. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

59
56
62
58
45
37
29
24
36
53
69
74
79
82
84
87
90
87
84
82
79
76
74
64

Low Clouds (% Sky Obscured)

60
63
62
60
58
61
61
60
51
51
42
34
32
33
45
58
71
73
77
81
71
62
52
46

Medium Clouds (% Sky Obscured)

44
45
44
39
38
39
40
41
34
30
22
38
52
65
54
43
31
38
42
48
44
44
43
30

High Clouds (% Sky Obscured)

14
8
8
8
7
7
7
11
25
42
51
35
21
9
18
27
38
30
20
9
13
17
18
15

ISS Passover

Visibility (miles)

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

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
Very Light Rain
Very Light Rain
Very Light Rain
Very Light Rain
Light Rain
Light Rain
Light Rain
Light Rain

Precipitation Probability (%)

48
39
40
35
25
22
18
13
14
14
11
18
21
22
34
43
54
56
59
64
68
70
77
71

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

15
15
15
14
14
13
11
11
11
11
11
10
12
12
12
13
14
15
18
18
17
17
18
18

Dew Point (°C)

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

Relative Humidity (%)

84
87
90
92
92
93
91
93
93
93
93
93
90
87
83
83
82
81
81
81
79
83
86
89

Pressure (mb)

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

Ozone (du)

383
387
390
387
384
381
379
377
375
375
374
374
373
373
372
373
374
374
376
377
379
380
382
384

Friday 24

Waning Gibbous 98%

22:50

05:25

20 Bad
21 Bad
22 Bad
23 Bad
00 Bad
01 Bad
02 Bad
03 OK
04 OK
05 OK
06 OK
07 OK
08 OK
09 OK
10 OK
11 Bad
12 Bad

Sun - Rise: 04:50, Set: 20:58, Transit: 12:55. Moon - Rise: 22:50, Set: 05:25. Civil Dark: 21:42 - 04:06. Nautical Dark: 22:46 - 03:02. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

53
43
38
33
37
44
43
34
32
31
23
22
23
24
29
33
35

Low Clouds (% Sky Obscured)

40
33
27
21
14
21
28
35
34
26
20
19
20
23
25
25
31

Medium Clouds (% Sky Obscured)

17
4
3
3
3
2
2
2
3
3
2
2
1
0
0
0
0

High Clouds (% Sky Obscured)

11
9
19
26
31
16
8
2
1
1
0
0
0
0
0
0
0

ISS Passover

Visibility (miles)

6
7
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

Precipitation Type

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

Precipitation Probability (%)

56
32
27
21
15
16
14
4
7
5
0
5
5
3
21
26
25

Precipitation Amount (mm)

0.3
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

3
2
3
3
3
4
4
4
4
4
4
5
6
6
7
7
7

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

15
15
15
15
15
14
12
12
11
11
11
11
14
14
15
15
15

Dew Point (°C)

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

Relative Humidity (%)

92
93
95
95
96
96
98
96
96
95
93
93
90
84
82
78
73

Pressure (mb)

1018
1018
1019
1019
1019
1019
1019
1019
1019
1019
1020
1020
1020
1020
1020
1020
1020

Ozone (du)

385
387
388
389
389
390
391
392
393
393
393
393
392
390
388
386
383

Forecast for Chelmsford, Essex, United Kingdom (51.72,0.47)

Generated: 18/05/24 20:25:15. Forecast: 18/05/24 to 24/05/24. Timezone: UTC+1.00