Clear Outside v1.0 - International Weather Forecasts For Astronomers

Tuesday 21

Waxing Crescent 24%

08:19

01:16

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
00 Bad

Sun - Rise: 06:15, Set: 20:25, Transit: 13:20. Moon - Rise: 08:19, Set: 01:16. Civil Dark: 21:01 - 05:40. Nautical Dark: 21:45 - 04:56. Astro Dark: 22:35 - 04:06

Total Clouds (% Sky Obscured)

51
63
67
86
100
64
91
91
96
99
100
92
82
74
71
86
85
91
82
74
69
56
60
100

Low Clouds (% Sky Obscured)

33
17
31
50
60
58
58
55
58
70
60
76
61
67
46
41
31
26
32
27
46
36
49
19

Medium Clouds (% Sky Obscured)

51
63
67
77
55
49
72
88
87
85
85
68
74
18
51
81
84
59
59
41
8
3
4
35

High Clouds (% Sky Obscured)

7
4
4
7
90
61
76
67
28
48
86
72
28
64
71
72
76
78
82
74
69
56
60
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)

13
12
12
17
18
19
21
22
23
23
23
24
25
26
26
26
26
26
27
27
27
28
28
29

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

5
6
6
7
7
7
6
5
5
5
5
5
6
6
6
7
7
8
7
7
7
6
7
7

Relative Humidity (%)

80
80
81
84
87
85
84
81
81
77
73
69
72
71
70
72
73
77
76
77
77
76
78
78

Pressure (mb)

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

Ozone (du)

403
401
401
401
400
402
402
400
399
397
395
393
391
387
385
382
379
377
376
377
376
375
375
374

Wednesday 22

Waxing Crescent 35%

09:30

02:19

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
00 Bad

Sun - Rise: 06:13, Set: 20:27, Transit: 13:20. Moon - Rise: 09:30, Set: 02:19. Civil Dark: 21:02 - 05:38. Nautical Dark: 21:47 - 04:54. Astro Dark: 22:37 - 04:03

Total Clouds (% Sky Obscured)

97
100
97
93
89
94
95
100
100
100
100
100
100
100
100
100
100
100
100
98
100
100
100
100

Low Clouds (% Sky Obscured)

26
33
35
50
47
31
47
40
29
5
6
13
15
12
66
86
100
86
74
57
65
45
63
45

Medium Clouds (% Sky Obscured)

53
65
79
85
80
63
84
91
100
100
100
100
100
93
100
77
64
76
78
79
87
73
63
60

High Clouds (% Sky Obscured)

75
100
90
60
60
85
79
100
100
100
100
100
100
100
100
100
100
100
100
96
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
Light Rain
Light Rain
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

0
0
0
0
0
0
0
1
6
23
52
85
73
36
24
6
1
0
0
0
0
0
0
0

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0.7
0.5
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

28
28
28
28
28
29
29
30
31
29
28
28
26
25
26
25
24
24
23
22
20
21
21
21

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

81
82
81
82
82
84
81
83
80
77
75
75
75
77
79
79
79
79
77
76
71
70
71
75

Pressure (mb)

1018
1017
1017
1017
1017
1017
1017
1017
1017
1019
1019
1019
1020
1020
1020
1020
1021
1021
1021
1021
1022
1022
1022
1022

Ozone (du)

373
373
372
372
372
375
376
375
374
373
374
372
371
372
372
373
370
370
369
369
367
367
366
366

Thursday 23

Waxing Crescent 46%

10:51

03:05

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

Sun - Rise: 06:11, Set: 20:29, Transit: 13:20. Moon - Rise: 10:51, Set: 03:05. Civil Dark: 21:04 - 05:36. Nautical Dark: 21:49 - 04:51. Astro Dark: 22:40 - 04:00

Total Clouds (% Sky Obscured)

100
100
81
99
98
70
71
9
27
12
14
15
0
6
4
76
30
20
39
52
61
75
85
96

Low Clouds (% Sky Obscured)

51
43
15
2
25
0
0
0
0
0
0
0
0
0
0
0
0
0
1
2
4
2
1
0

Medium Clouds (% Sky Obscured)

52
50
15
2
17
18
6
1
0
0
10
9
0
2
0
0
6
0
0
1
1
13
7
7

High Clouds (% Sky Obscured)

100
98
81
99
98
55
71
9
27
12
14
15
0
6
4
52
22
20
39
52
61
75
85
96

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
2
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)

21
21
20
20
19
19
19
20
22
22
24
24
24
24
24
24
24
24
23
23
22
22
22
22

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

77
81
83
83
84
84
84
83
81
77
74
70
68
67
66
67
69
69
70
69
64
62
65
66

Pressure (mb)

1022
1022
1022
1022
1022
1022
1023
1023
1023
1024
1024
1024
1024
1024
1023
1023
1023
1023
1022
1023
1023
1023
1023
1023

Ozone (du)

366
367
367
366
366
366
365
365
366
366
367
367
366
365
366
366
366
364
362
361
360
360
360
361

Friday 24

First Quarter 58%

12:15

03:36

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

Sun - Rise: 06:09, Set: 20:30, Transit: 13:20. Moon - Rise: 12:15, Set: 03:36. Civil Dark: 21:06 - 05:34. Nautical Dark: 21:51 - 04:49. Astro Dark: 22:42 - 03:57

Total Clouds (% Sky Obscured)

72
46
28
21
13
29
39
50
61
48
45
45
48
51
54
48
41
46
47
44
36
37
39
40

Low Clouds (% Sky Obscured)

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

Medium Clouds (% Sky Obscured)

14
12
4
1
1
29
39
0
0
0
0
0
3
28
3
2
15
0
2
2
36
37
39
40

High Clouds (% Sky Obscured)

72
46
28
21
13
29
39
50
61
48
45
45
48
51
54
48
41
46
47
44
36
32
30
24

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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

68
71
72
71
74
77
80
80
79
77
70
66
62
61
60
59
62
62
65
69
72
75
76
76

Pressure (mb)

1023
1023
1022
1022
1022
1022
1022
1023
1023
1023
1023
1023
1023
1023
1023
1022
1022
1022
1022
1022
1023
1023
1023
1023

Ozone (du)

361
358
356
355
354
353
353
352
351
352
353
353
352
351
351
349
348
347
346
346
346
346
348
351

Saturday 25

Waxing Gibbous 69%

13:37

03:58

01 Bad
02 Bad
03 Bad
04 Bad
05 Bad
06 Bad
07 Bad
08 OK
09 OK
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: 06:07, Set: 20:32, Transit: 13:20. Moon - Rise: 13:37, Set: 03:58. Civil Dark: 21:07 - 05:32. Nautical Dark: 21:53 - 04:46. Astro Dark: 22:45 - 03:54

Total Clouds (% Sky Obscured)

54
65
77
71
66
58
51
38
24
49
76
100
99
98
97
91
86
78
77
76
69
73
72
78

Low 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

Medium Clouds (% Sky Obscured)

40
40
40
40
45
55
51
38
24
49
76
92
89
84
80
62
49
39
47
61
68
72
71
70

High Clouds (% Sky Obscured)

50
57
75
69
61
58
48
38
24
49
76
94
85
76
52
37
50
63
73
72
68
73
72
78

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)

14
13
13
13
13
12
13
13
14
15
14
14
14
13
12
11
10
9
8
7
6
5
5
4

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

76
76
78
84
87
84
84
81
79
75
71
64
61
59
57
56
60
64
70
71
71
72
70
70

Pressure (mb)

1023
1023
1023
1023
1023
1023
1023
1023
1023
1024
1024
1024
1024
1024
1024
1024
1024
1023
1023
1024
1024
1024
1024
1024

Ozone (du)

357
362
365
366
367
371
376
380
382
384
387
389
393
392
391
390
388
385
383
382
382
381
381
381

Sunday 26

Waxing Gibbous 78%

14:56

04:15

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

Sun - Rise: 06:05, Set: 20:33, Transit: 13:19. Moon - Rise: 14:56, Set: 04:15. Civil Dark: 21:09 - 05:30. Nautical Dark: 21:55 - 04:44. Astro Dark: 22:48 - 03:51

Total Clouds (% Sky Obscured)

76
76
74
76
78
82
87
95
98
87
76
63
43
24
9
19
30
40
39
37
35
44
52
62

Low Clouds (% Sky Obscured)

0
0
0
8
17
29
20
10
1
13
24
34
24
14
1
1
0
0
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

65
45
25
13
7
9
19
30
41
53
59
63
43
24
9
19
30
40
39
27
9
10
10
11

High Clouds (% Sky Obscured)

61
42
29
46
57
67
77
84
93
72
58
50
43
24
9
19
30
40
39
34
21
23
33
46

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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

69
70
70
70
70
69
71
69
67
65
64
62
61
61
62
64
68
71
75
76
76
77
78
80

Pressure (mb)

1024
1024
1024
1024
1024
1024
1024
1024
1025
1025
1025
1025
1025
1025
1025
1025
1025
1025
1025
1026
1026
1026
1026
1026

Ozone (du)

381
380
379
379
377
375
373
372
371
370
368
367
366
366
365
365
365
366
367
368
369
370
373
376

Monday 27

Waxing Gibbous 86%

16:11

04:29

Sun - Rise: 06:04, Set: 20:35, Transit: 13:19. Moon - Rise: 16:11, Set: 04:29. Civil Dark: 21:11 - 05:28. Nautical Dark: 21:57 - 04:42. Astro Dark: 22:51 - 03:48

Total Clouds (% Sky Obscured)

Low Clouds (% Sky Obscured)

Medium Clouds (% Sky Obscured)

High Clouds (% Sky Obscured)

ISS Passover

Visibility (miles)

Fog (%)

Precipitation Type

Precipitation Probability (%)

Precipitation Amount (mm)

Wind Speed/Direction (mph)

Chance of Frost

Temperature (°C)

Feels Like (°C)

Dew Point (°C)

Relative Humidity (%)

Pressure (mb)

Ozone (du)

Forecast for Penzance, Cornwall, United Kingdom (50.12,-5.54)

Generated: 21/04/26 01:02:08. Forecast: 21/04/26 to 27/04/26. Timezone: UTC+1.00