Clear Outside v1.0 - International Weather Forecasts For Astronomers

Monday 20

Waxing Crescent 14%

07:18

No Set

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

Sun - Rise: 06:12, Set: 20:20, Transit: 13:16. Moon - Rise: 07:18, Set: No Set. Civil Dark: 20:56 - 05:36. Nautical Dark: 21:40 - 04:52. Astro Dark: 22:30 - 04:02

Total Clouds (% Sky Obscured)

99
0
3
76
10
61
48
37
37
32
74
90
84
70
47
32
64
98
100
100
100
100
96
78

Low Clouds (% Sky Obscured)

9
0
0
0
0
0
0
0
15
29
74
90
84
70
47
32
54
72
30
22
11
0
0
0

Medium Clouds (% Sky Obscured)

93
100
60
26
8
30
39
37
37
32
45
40
45
40
40
32
33
77
65
100
57
98
96
78

High Clouds (% Sky Obscured)

94
12
11
9
24
49
43
37
37
32
74
90
84
70
47
32
11
63
54
18
22
25
3
2

ISS Passover

Visibility (miles)

-
-
-
-
-
-
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

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
2
23
23
14
4
1
0
0
1
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
7
8
8
9
10
7
6
6
8
13
14
15
14
15
15
14
13
12
11
7
6
6
6

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

3
5
4
3
4
2
3
3
4
5
6
6
7
6
6
7
7
7
7
7
4
4
2
1

Dew Point (°C)

4
3
3
2
2
1
3
3
4
6
6
6
7
8
6
5
5
5
6
6
5
4
3
3

Relative Humidity (%)

90
79
81
75
75
75
86
85
82
81
77
72
76
80
68
66
65
66
72
77
84
90
89
91

Pressure (mb)

1025
1024
1024
1024
1023
1023
1023
1023
1023
1023
1023
1023
1023
1023
1022
1022
1022
1022
1022
1022
1022
1023
1023
1023

Ozone (du)

393
396
395
394
394
394
394
395
397
397
396
394
394
395
394
394
393
390
388
388
390
392
393
393

Tuesday 21

Waxing Crescent 24%

08:12

01:14

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: 06:10, Set: 20:22, Transit: 13:16. Moon - Rise: 08:12, Set: 01:14. Civil Dark: 20:57 - 05:34. Nautical Dark: 21:42 - 04:50. Astro Dark: 22:33 - 03:59

Total Clouds (% Sky Obscured)

73
84
79
41
40
90
80
81
92
98
94
86
88
82
97
93
96
94
86
100
85
49
65
62

Low Clouds (% Sky Obscured)

4
7
0
0
0
24
16
11
11
38
49
66
67
59
52
40
41
36
35
0
0
0
0
0

Medium Clouds (% Sky Obscured)

73
84
66
18
24
44
57
81
77
96
87
58
71
56
58
22
13
33
25
51
50
33
26
52

High Clouds (% Sky Obscured)

3
0
3
29
4
45
36
13
30
14
2
4
5
5
74
71
61
56
65
100
85
49
65
62

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
0
0
0
1
0
0
0
1
0
1
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)

7
8
9
10
10
11
12
13
14
17
18
19
20
22
22
22
22
21
21
21
21
21
21
22

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

1
2
1
1
1
1
-1
-1
0
1
1
3
3
4
5
5
6
6
5
4
3
2
2
1

Dew Point (°C)

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

Relative Humidity (%)

93
94
91
88
91
94
93
91
86
78
71
65
66
65
65
65
68
72
77
81
80
72
73
77

Pressure (mb)

1023
1023
1023
1023
1023
1023
1023
1023
1023
1023
1023
1023
1023
1022
1022
1021
1021
1021
1021
1021
1021
1021
1021
1021

Ozone (du)

393
392
390
389
388
387
387
389
389
389
388
387
385
383
383
381
380
379
378
377
377
376
374
373

Wednesday 22

Waxing Crescent 35%

09:22

02:18

00 Bad
01 Bad
02 Bad
03 Bad
04 OK
05 OK
06 Good
07 OK
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: 06:08, Set: 20:24, Transit: 13:16. Moon - Rise: 09:22, Set: 02:18. Civil Dark: 20:59 - 05:32. Nautical Dark: 21:44 - 04:47. Astro Dark: 22:36 - 03:56

Total Clouds (% Sky Obscured)

44
100
97
91
17
13
6
27
90
100
97
82
90
98
100
100
100
100
99
100
98
93
85
91

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
3
0
0
0
0
0
0
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

30
86
85
89
17
13
6
27
86
100
91
79
79
94
100
100
100
99
91
88
82
57
27
7

High Clouds (% Sky Obscured)

44
100
97
91
17
13
6
27
90
100
45
17
67
93
97
94
79
79
96
100
96
84
60
58

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)

22
21
21
21
21
21
21
21
22
23
25
25
26
26
25
25
23
22
21
21
21
21
20
19

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

0
-1
-0
-0
-0
0
-0
-1
1
2
3
4
4
5
5
4
4
4
4
3
3
3
3
3

Dew Point (°C)

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

Relative Humidity (%)

79
79
76
76
82
85
84
84
81
78
77
73
67
66
63
62
63
66
67
67
62
59
63
70

Pressure (mb)

1021
1021
1021
1021
1021
1021
1021
1021
1022
1022
1022
1023
1023
1023
1024
1024
1024
1024
1024
1024
1024
1025
1025
1025

Ozone (du)

373
375
374
372
372
372
370
371
373
376
379
380
381
381
380
378
377
376
375
374
374
374
374
374

Thursday 23

Waxing Crescent 46%

10:44

03:03

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

Sun - Rise: 06:06, Set: 20:25, Transit: 13:15. Moon - Rise: 10:44, Set: 03:03. Civil Dark: 21:01 - 05:30. Nautical Dark: 21:46 - 04:45. Astro Dark: 22:38 - 03:52

Total Clouds (% Sky Obscured)

87
86
90
90
57
27
3
2
3
4
5
3
3
5
4
4
3
7
14
41
45
60
60
57

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)

9
8
5
3
2
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

56
55
57
57
40
20
3
2
3
4
5
3
2
5
4
4
3
7
14
41
45
60
60
57

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)

19
19
18
17
17
17
16
16
17
19
20
21
22
23
23
22
21
19
17
15
13
11
10
10

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

72
70
71
73
74
75
79
81
79
77
71
65
63
60
57
56
59
64
70
75
78
85
87
91

Pressure (mb)

1026
1026
1026
1026
1026
1026
1026
1026
1027
1027
1027
1027
1027
1027
1027
1027
1026
1026
1026
1026
1026
1026
1026
1026

Ozone (du)

375
375
374
373
372
372
372
372
372
371
369
369
369
369
367
366
364
363
365
367
368
369
369
369

Friday 24

First Quarter 58%

12:09

03:33

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

Sun - Rise: 06:04, Set: 20:27, Transit: 13:15. Moon - Rise: 12:09, Set: 03:33. Civil Dark: 21:03 - 05:28. Nautical Dark: 21:48 - 04:42. Astro Dark: 22:41 - 03:49

Total Clouds (% Sky Obscured)

41
15
5
4
2
2
0
2
0
1
0
0
0
1
2
8
20
30
19
30
22
13
19
33

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
17
6
0
0
0

Medium Clouds (% Sky Obscured)

0
0
0
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

40
13
4
2
1
1
0
0
0
0
0
0
0
1
1
3
10
15
19
16
15
13
19
20

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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

5
5
5
5
4
3
1
2
4
6
7
8
9
11
12
12
13
12
11
11
10
9
9
7

Dew Point (°C)

6
6
5
4
3
1
-1
-1
1
1
2
3
4
5
5
6
7
8
9
9
8
7
6
5

Relative Humidity (%)

90
90
90
90
86
79
75
73
66
59
55
54
52
51
52
53
55
62
69
74
80
84
90
88

Pressure (mb)

1026
1026
1026
1026
1026
1026
1026
1026
1026
1026
1026
1025
1025
1025
1024
1024
1024
1024
1024
1024
1023
1024
1024
1024

Ozone (du)

369
370
373
375
375
372
370
369
368
368
370
371
370
368
366
364
362
361
361
361
361
362
362
363

Saturday 25

Waxing Gibbous 69%

13:31

03:55

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

Sun - Rise: 06:02, Set: 20:28, Transit: 13:15. Moon - Rise: 13:31, Set: 03:55. Civil Dark: 21:05 - 05:26. Nautical Dark: 21:50 - 04:40. Astro Dark: 22:44 - 03:46

Total Clouds (% Sky Obscured)

37
40
45
43
40
32
26
26
25
24
23
16
13
14
18
23
25
25
24
16
8
0
23
47

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
8
17
23
25
25
24
16
8
0
8
15

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)

32
38
40
35
24
27
26
26
17
8
6
7
6
4
2
0
0
0
0
0
0
0
20
40

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)

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

Chance of Frost

Temperature (°C)

6
5
4
3
3
3
2
2
5
7
10
11
12
14
14
14
14
13
13
12
10
8
7
6

Feels Like (°C)

7
6
2
1
1
1
0
0
1
2
3
4
5
5
11
11
11
10
11
11
9
9
9
8

Dew Point (°C)

4
3
2
0
-1
-1
-1
-2
-1
1
2
2
3
4
4
5
5
6
7
7
6
5
4
4

Relative Humidity (%)

86
88
83
79
76
76
77
76
68
63
57
54
52
50
51
53
55
61
66
73
77
81
85
85

Pressure (mb)

1024
1024
1024
1024
1024
1024
1024
1024
1024
1024
1024
1024
1024
1024
1023
1023
1023
1023
1023
1023
1024
1024
1025
1025

Ozone (du)

364
366
366
366
366
367
368
368
369
369
369
369
369
369
369
369
369
369
369
369
369
368
368
369

Sunday 26

Waxing Gibbous 78%

14:50

04:11

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: 06:00, Set: 20:30, Transit: 13:15. Moon - Rise: 14:50, Set: 04:11. Civil Dark: 21:06 - 05:24. Nautical Dark: 21:52 - 04:37. Astro Dark: 22:47 - 03:43

Total Clouds (% Sky Obscured)

70
65
59
54
69
85
94
93
94
95
96
98
100
98
96
94
88
82
78
86
92
100
100
100

Low Clouds (% Sky Obscured)

21
26
32
38
41
47
53
52
51
51
52
52
53
44
31
24
18
13
8
7
6
5
8
10

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
13
20
35
45
44
39
41
38
38
45
49
56
62
64

High Clouds (% Sky Obscured)

58
56
51
48
59
74
88
89
91
91
94
98
100
98
96
94
85
70
56
72
87
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
3
3
2
4
1
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)

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

Chance of Frost

Temperature (°C)

6
6
6
5
5
4
4
3
5
7
9
10
11
12
12
13
13
12
12
11
10
8
6
6

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

85
85
88
90
91
89
88
88
78
70
63
61
59
56
58
58
58
64
70
76
80
84
90
88

Pressure (mb)

1025
1025
1025
1026
1026
1026
1026
1026
1026
1027
1027
1026
1026
1026
1026
1025
1025
1025
1025
1025
1025
1025
1025
1025

Ozone (du)

369
369
370
370
371
370
370
370
369
368
367
367
368
368
369
369
370
371
372
373
374
375
376
377

Forecast for Upton, Cornwall, United Kingdom (50.54,-4.43)

Generated: 20/04/26 06:27:00. Forecast: 20/04/26 to 26/04/26. Timezone: UTC+1.00