Clear Outside v1.0 - International Weather Forecasts For Astronomers

Saturday 19

Waning Gibbous 69%

02:29

09:01

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 OK
16 OK
17 Bad
18 Bad
19 OK
20 Bad
21 OK
22 Bad
23 Bad

Sun - Rise: 05:54, Set: 20:04, Transit: 12:59. Moon - Rise: 02:29, Set: 09:01. Civil Dark: 20:40 - 05:18. Nautical Dark: 21:25 - 04:33. Astro Dark: 22:17 - 03:41

Total Clouds (% Sky Obscured)

100
19
19
91
47
62
68
99
100
100
100
100
100
75
48
33
37
96
97
43
81
45
52
53

Low Clouds (% Sky Obscured)

60
49
55
44
39
32
19
12
0
34
37
36
17
21
9
0
0
0
0
0
11
6
29
24

Medium Clouds (% Sky Obscured)

98
67
97
88
47
62
68
97
100
100
95
100
91
75
48
14
11
15
22
18
6
17
14
15

High Clouds (% Sky Obscured)

100
99
100
76
47
61
68
96
100
100
100
82
100
59
30
5
13
59
52
3
32
10
2
2

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

Precipitation Probability (%)

0
100
100
0
14
10
3
8
29
47
48
19
10
4
1
0
0
0
0
0
3
0
0
0

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

8
7
7
6
5
5
5
5
5
6
6
5
7
4
4
5
4
4
3
3
3
3
2
2

Relative Humidity (%)

78
69
70
73
66
67
69
69
69
71
68
63
70
54
52
52
50
51
52
55
60
66
67
69

Pressure (mb)

1008
1008
1008
1008
1007
1007
1007
1008
1008
1008
1008
1008
1008
1008
1008
1008
1007
1008
1008
1008
1008
1008
1008
1008

Ozone (du)

364
363
364
365
366
367
369
370
372
373
374
375
375
375
377
379
379
378
377
377
376
375
374
375

Sunday 20

Waning Gibbous 59%

03:10

10:12

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
20 Bad
21 Bad
22 Bad
23 Bad

Sun - Rise: 05:52, Set: 20:06, Transit: 12:59. Moon - Rise: 03:10, Set: 10:12. Civil Dark: 20:42 - 05:16. Nautical Dark: 21:27 - 04:30. Astro Dark: 22:20 - 03:37

Total Clouds (% Sky Obscured)

56
73
86
76
73
78
87
71
53
76
92
94
100
100
87
96
100
97
100
98
84
86
80
56

Low Clouds (% Sky Obscured)

8
6
23
32
35
42
36
42
27
51
88
85
100
100
76
90
79
37
0
0
0
37
40
44

Medium Clouds (% Sky Obscured)

19
27
26
20
17
27
77
54
15
18
31
27
21
15
11
26
27
30
46
37
32
34
63
39

High Clouds (% Sky Obscured)

2
2
2
2
2
0
3
2
33
6
2
2
2
14
2
9
38
48
10
5
14
16
3
5

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
1
1
0
0
1
2
2
2
3
17
6
4
1
1
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
8
7
7
7
9
9
9
9
10
9
8
7
9
8
5
6
5
4
4
3

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

5
4
4
4
4
4
4
3
4
5
6
8
9
9
10
10
11
11
11
10
9
9
8
8

Dew Point (°C)

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

Relative Humidity (%)

72
74
74
76
79
82
82
79
72
64
59
57
60
62
63
62
70
80
77
76
79
80
82
82

Pressure (mb)

1008
1007
1007
1007
1007
1007
1007
1007
1007
1007
1007
1007
1007
1007
1007
1006
1006
1006
1006
1007
1007
1007
1007
1007

Ozone (du)

376
376
375
374
372
371
371
370
369
368
368
366
366
365
365
364
363
363
364
363
364
364
364
365

Monday 21

Third Quarter 48%

03:39

11:32

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
20 Bad
21 Bad
22 Bad
23 Bad

Sun - Rise: 05:50, Set: 20:07, Transit: 12:59. Moon - Rise: 03:39, Set: 11:32. Civil Dark: 20:44 - 05:13. Nautical Dark: 21:30 - 04:27. Astro Dark: 22:23 - 03:34

Total Clouds (% Sky Obscured)

63
86
82
87
86
89
93
97
57
50
100
100
95
96
96
90
78
67
74
77
60
30
51
30

Low Clouds (% Sky Obscured)

52
67
70
87
86
89
93
97
33
0
51
33
59
57
59
45
65
37
32
69
46
0
30
0

Medium Clouds (% Sky Obscured)

33
61
59
33
38
21
6
11
21
18
13
28
31
29
87
90
75
53
74
30
12
7
51
30

High Clouds (% Sky Obscured)

2
2
2
2
1
2
3
2
2
2
64
81
71
38
35
35
0
0
5
30
25
2
1
17

ISS Passover

Visibility (miles)

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

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

Precipitation Probability (%)

0
0
0
0
0
0
0
0
0
0
1
9
31
59
62
59
54
64
63
51
35
41
42
36

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

9
8
8
8
7
7
7
6
7
9
12
15
16
16
15
15
15
15
14
14
13
12
11
11

Feels Like (°C)

7
7
6
7
7
7
7
6
7
8
11
13
14
14
12
13
14
15
15
14
12
11
9
9

Dew Point (°C)

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

Relative Humidity (%)

85
87
88
88
87
87
88
83
75
78
76
73
65
55
60
73
79
75
74
83
87
92
93
93

Pressure (mb)

1007
1007
1007
1007
1007
1007
1008
1008
1008
1008
1008
1008
1008
1009
1009
1009
1009
1009
1010
1010
1011
1012
1013
1013

Ozone (du)

366
366
366
365
365
366
366
367
366
367
367
366
367
367
366
367
369
371
371
371
373
376
374
370

Tuesday 22

Waning Crescent 37%

04:00

12:56

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
20 Bad
21 Bad
22 Bad
23 Bad

Sun - Rise: 05:48, Set: 20:09, Transit: 12:58. Moon - Rise: 04:00, Set: 12:56. Civil Dark: 20:46 - 05:11. Nautical Dark: 21:32 - 04:25. Astro Dark: 22:26 - 03:31

Total Clouds (% Sky Obscured)

36
37
38
43
52
61
77
82
89
96
97
99
94
100
100
100
100
99
100
100
96
84
82
83

Low Clouds (% Sky Obscured)

13
23
16
26
19
18
3
8
17
25
24
24
25
41
58
74
51
31
10
7
3
1
21
42

Medium Clouds (% Sky Obscured)

36
0
3
3
6
3
3
23
52
75
87
90
85
93
98
96
86
47
5
19
40
58
62
72

High Clouds (% Sky Obscured)

16
12
15
2
27
49
72
62
52
42
62
81
94
72
43
20
53
73
100
100
90
71
70
81

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 (%)

33
12
17
3
1
0
0
0
0
0
0
4
8
8
3
2
0
0
3
2
0
1
9
26

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

Chance of Frost

Temperature (°C)

10
9
9
8
8
7
7
7
9
10
12
13
14
16
16
16
16
16
15
14
13
12
10
10

Feels Like (°C)

8
8
8
7
6
6
6
6
7
8
10
11
12
13
13
14
13
13
12
11
10
10
10
10

Dew Point (°C)

9
9
8
7
6
6
6
6
6
6
7
6
5
4
3
3
2
2
2
5
7
7
6
6

Relative Humidity (%)

93
95
93
93
91
91
91
90
82
77
71
62
53
46
42
40
39
40
40
51
66
72
72
73

Pressure (mb)

1014
1014
1014
1015
1015
1016
1016
1017
1017
1018
1018
1018
1018
1018
1018
1018
1017
1017
1017
1017
1018
1018
1018
1017

Ozone (du)

370
369
367
367
366
368
368
369
370
371
372
374
375
375
376
377
378
378
378
380
380
377
375
377

Wednesday 23

Waning Crescent 26%

04:17

14:22

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
20 Bad
21 Bad
22 Bad
23 Bad

Sun - Rise: 05:46, Set: 20:11, Transit: 12:58. Moon - Rise: 04:17, Set: 14:22. Civil Dark: 20:47 - 05:09. Nautical Dark: 21:34 - 04:22. Astro Dark: 22:29 - 03:28

Total Clouds (% Sky Obscured)

89
100
100
99
89
81
71
79
86
94
94
94
94
93
88
82
79
72
68
89
90
91
86
82

Low Clouds (% Sky Obscured)

56
67
79
82
86
81
71
66
63
62
62
59
59
50
39
28
38
46
55
56
60
63
70
76

Medium Clouds (% Sky Obscured)

70
65
72
97
68
67
45
55
70
86
87
87
88
88
45
46
32
30
63
71
71
67
48
25

High Clouds (% Sky Obscured)

83
77
53
1
20
20
20
20
20
20
15
15
2
20
0
0
0
0
0
0
0
0
0
0

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
3
3
3
3
4
9
5
3
7
7
7
3
3
5
7
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
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Very Light Rain
None
None
None
Very Light Rain
None
None
None
Very Light Rain
Very Light Rain
None
None
None
None

Precipitation Probability (%)

48
82
95
95
95
95
95
95
95
87
82
63
55
54
57
45
49
57
58
63
51
36
29
21

Precipitation Amount (mm)

0
0.4
0.8
1
1.3
1.2
1.3
1.2
0.6
0.4
0.3
0
0
0
0.2
0
0
0
0.2
0.3
0
0
0
0

Wind Speed/Direction (mph)

6
6
7
8
10
10
10
11
12
13
13
14
12
10
9
9
9
8
8
7
6
5
5
4

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

74
78
80
82
84
81
85
90
90
93
95
93
93
96
87
73
66
64
79
86
87
88
92
93

Pressure (mb)

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

Ozone (du)

376
373
373
373
371
370
370
372
376
378
379
381
383
382
388
391
395
399
399
397
394
391
388
382

Thursday 24

Waning Crescent 17%

04:30

15:48

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
20 Bad
21 Bad
22 Bad
23 Bad

Sun - Rise: 05:44, Set: 20:12, Transit: 12:58. Moon - Rise: 04:30, Set: 15:48. Civil Dark: 20:49 - 05:07. Nautical Dark: 21:36 - 04:20. Astro Dark: 22:32 - 03:24

Total Clouds (% Sky Obscured)

81
82
80
79
86
93
100
100
100
100
100
99
98
97
97
97
90
83
78
75
66
63
74
85

Low Clouds (% Sky Obscured)

81
81
80
79
86
93
100
100
100
100
99
98
96
87
75
65
63
61
60
48
32
18
30
42

Medium Clouds (% Sky Obscured)

2
3
4
4
4
3
2
2
1
0
2
4
6
10
14
21
20
18
12
15
21
24
29
34

High Clouds (% Sky Obscured)

1
0
0
1
0
0
0
0
0
0
1
1
1
28
56
83
55
25
0
5
15
19
26
27

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 (%)

9
10
12
10
12
11
7
16
19
19
26
30
32
32
32
31
23
17
12
10
8
2
5
3

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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

95
96
95
95
93
93
93
91
90
87
84
86
87
88
86
83
78
77
74
72
72
72
71
68

Pressure (mb)

1012
1013
1013
1014
1014
1015
1016
1016
1017
1017
1017
1018
1018
1018
1019
1019
1019
1019
1019
1020
1020
1020
1021
1021

Ozone (du)

375
368
366
364
362
363
363
364
362
361
359
359
359
360
363
366
369
369
369
369
371
373
374
376

Friday 25

Waning Crescent 9%

04:43

17:17

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
20 Bad
21 Bad
22 Bad
23 Bad

Sun - Rise: 05:42, Set: 20:14, Transit: 12:58. Moon - Rise: 04:43, Set: 17:17. Civil Dark: 20:51 - 05:05. Nautical Dark: 21:38 - 04:17. Astro Dark: 22:35 - 03:21

Total Clouds (% Sky Obscured)

97
98
99
100
100
100
100
98
97
95
96
96
97
94
92
92
95
98
100
97
95
93
88
84

Low Clouds (% Sky Obscured)

55
55
56
57
60
63
66
75
83
91
94
96
97
93
88
83
73
66
62
51
37
17
15
16

Medium Clouds (% Sky Obscured)

36
31
31
30
35
25
20
13
11
9
7
9
10
14
14
18
36
53
76
67
61
53
52
57

High Clouds (% Sky Obscured)

32
45
54
41
36
42
42
29
21
1
1
3
4
7
10
17
18
9
5
5
5
4
5
5

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
1
1
1
2
3
2
5
6
6
15
22
27
33
36

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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

64
62
60
56
54
53
52
51
50
47
46
44
42
40
42
43
45
47
50
53
58
65
70
73

Pressure (mb)

1021
1021
1021
1020
1020
1020
1020
1020
1020
1020
1020
1020
1020
1019
1019
1019
1019
1019
1019
1019
1019
1019
1020
1019

Ozone (du)

377
379
379
380
380
379
378
377
375
373
372
371
371
371
370
370
370
368
367
365
364
363
361
362

Forecast for Streatham Hill, Greater London, United Kingdom (51.44,-0.12)

Generated: 19/04/25 04:12:46. Forecast: 19/04/25 to 25/04/25. Timezone: UTC+1.00