Clear Outside v1.0 - International Weather Forecasts For Astronomers

Thursday 22

Waxing Gibbous 76%

15:45

05:31

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

Sun - Rise: 06:23, Set: 20:50, Transit: 13:37. Moon - Rise: 15:45, Set: 05:31. Civil Dark: 21:27 - 05:45. Nautical Dark: 22:15 - 04:57. Astro Dark: 23:11 - 04:00

Total Clouds (% Sky Obscured)

47
28
31
8
21
15
0
13
16
28
20
13
9
18
58
66
61
63
83
100
92
80
70
66

Low Clouds (% Sky Obscured)

41
15
31
8
10
2
0
13
16
24
19
13
9
6
21
59
61
63
83
100
92
73
67
52

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)

9
16
0
0
12
14
0
0
0
5
2
0
0
13
47
19
1
1
0
0
2
26
9
33

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 (%)

1
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)

0.01
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
11
10
9
8
7
6
5
4
4
4
4
4
4
4
4
5
6
7
7
8
8
9

Chance of Frost

Temperature (°C)

12
12
12
11
9
8
6
5
4
3
3
2
2
2
1
1
3
6
8
10
11
12
13
14

Feels Like (°C)

12
12
12
11
7
5
4
3
2
2
1
1
0
-0
-1
-1
1
4
6
8
11
12
13
14

Dew Point (°C)

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

Relative Humidity (%)

49
49
50
53
57
65
74
82
89
94
98
100
100
100
100
100
98
86
75
66
58
52
48
44

Pressure (mb)

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

Ozone (du)

366
365
369
368
358
359
361
361
360
359
360
360
358
352
347
344
342
343
344
344
342
344
343
339

Friday 23

Waxing Gibbous 85%

No Rise

05:49

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

Sun - Rise: 06:21, Set: 20:51, Transit: 13:37. Moon - Rise: No Rise, Set: 05:49. Civil Dark: 21:29 - 05:43. Nautical Dark: 22:17 - 04:55. Astro Dark: 23:14 - 03:57

Total Clouds (% Sky Obscured)

72
44
38
2
13
9
26
3
1
41
89
83
88
94
100
100
100
100
100
100
100
98
100
100

Low Clouds (% Sky Obscured)

25
14
2
2
6
4
9
3
1
0
0
0
2
11
65
70
74
86
97
100
96
70
57
66

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
1
4
6
8
23
25
23
27
28
20
23
19
2

High Clouds (% Sky Obscured)

62
33
36
0
8
6
20
0
0
41
89
82
87
93
100
100
100
100
100
100
99
92
100
100

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
1
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
0.01
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

14
14
13
12
10
8
7
6
5
4
4
3
3
2
2
2
4
6
8
9
10
11
12
12

Feels Like (°C)

14
14
13
12
10
6
5
3
2
2
1
1
0
-0
-1
-0
2
4
6
7
10
11
12
12

Dew Point (°C)

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

Relative Humidity (%)

42
43
46
51
57
66
73
79
85
89
95
98
100
100
100
100
97
88
78
71
66
62
59
55

Pressure (mb)

1028
1028
1028
1028
1028
1029
1029
1029
1029
1029
1029
1029
1029
1029
1029
1029
1029
1029
1029
1029
1029
1029
1028
1028

Ozone (du)

338
340
342
341
345
346
345
345
345
344
337
335
332
329
327
327
327
324
321
321
321
324
317
316

Saturday 24

Waxing Gibbous 93%

17:10

06:06

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

Sun - Rise: 06:19, Set: 20:53, Transit: 13:37. Moon - Rise: 17:10, Set: 06:06. Civil Dark: 21:31 - 05:41. Nautical Dark: 22:19 - 04:52. Astro Dark: 23:17 - 03:53

Total Clouds (% Sky Obscured)

100
100
100
99
73
20
2
1
8
40
88
86
84
93
98
95
93
93
93
93
93
93
100
100

Low Clouds (% Sky Obscured)

56
61
70
76
65
19
2
1
8
40
88
86
84
93
98
95
93
93
93
93
93
93
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)

100
100
100
97
26
1
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
1

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
0.01

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

13
13
12
11
10
6
4
3
2
1
1
0
-0
-1
-1
-1
1
3
5
7
10
12
12
13

Dew Point (°C)

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

Relative Humidity (%)

52
52
54
57
59
63
67
73
79
84
89
93
97
100
100
100
91
80
70
60
54
50
47
45

Pressure (mb)

1027
1027
1027
1027
1027
1027
1028
1028
1028
1028
1028
1028
1028
1028
1028
1028
1028
1028
1028
1028
1028
1028
1027
1027

Ozone (du)

318
319
320
322
320
319
320
322
325
326
328
328
327
333
340
344
357
359
362
363
363
363
362
364

Sunday 25

Waxing Gibbous 98%

18:37

06:23

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

Sun - Rise: 06:17, Set: 20:55, Transit: 13:37. Moon - Rise: 18:37, Set: 06:23. Civil Dark: 21:33 - 05:39. Nautical Dark: 22:21 - 04:49. Astro Dark: 23:20 - 03:50

Total Clouds (% Sky Obscured)

100
100
100
100
95
95
95
95
95
95
18
18
18
18
18
18
32
32
32
32
32
32
77
77

Low Clouds (% Sky Obscured)

100
100
100
100
45
45
45
45
45
45
18
18
18
18
18
18
32
32
32
32
32
32
77
77

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
9
9

High Clouds (% Sky Obscured)

0
0
0
0
92
92
92
92
92
92
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
1
1
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Amount (mm)

0
0
0
0.01
0.01
0.01
0.01
0.01
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

11
12
13
13
12
11
9
9
8
7
6
6
6
7
7
7
7
8
9
9
9
9
9
9

Chance of Frost

Temperature (°C)

13
13
12
11
10
8
7
5
4
3
3
2
2
1
1
1
3
6
8
10
12
13
13
14

Feels Like (°C)

13
13
12
11
7
5
4
2
1
1
-0
-1
-2
-2
-2
-2
0
3
6
8
12
13
13
14

Dew Point (°C)

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

Relative Humidity (%)

45
49
53
58
62
69
76
83
90
97
100
100
100
100
100
100
97
87
76
65
56
50
45
41

Pressure (mb)

1027
1026
1026
1026
1025
1025
1025
1025
1025
1025
1024
1024
1024
1023
1023
1023
1022
1021
1021
1020
1019
1019
1018
1017

Ozone (du)

366
366
365
363
361
366
369
371
371
369
370
370
369
369
370
372
376
375
374
373
371
370
368
368

Monday 26

Waxing Gibbous 100%

20:07

06:41

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

Sun - Rise: 06:15, Set: 20:57, Transit: 13:36. Moon - Rise: 20:07, Set: 06:41. Civil Dark: 21:35 - 05:36. Nautical Dark: 22:24 - 04:47. Astro Dark: 23:24 - 03:46

Total Clouds (% Sky Obscured)

77
77
77
77
20
20
20
20
20
20
85
85
85
85
85
85
99
99
99
99
99
99
91
91

Low Clouds (% Sky Obscured)

77
77
77
77
20
20
20
20
20
20
1
1
1
1
1
1
0
0
0
0
0
0
77
77

Medium Clouds (% Sky Obscured)

9
9
9
9
0
0
0
0
0
0
0
0
0
0
0
0
98
98
98
98
98
98
2
2

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
85
85
85
85
85
85
55
55
55
55
55
55
70
70

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

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0.01
0.01
0.01
0.01
0.01
0
0
0
0
0
0.01
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

15
15
14
13
12
11
8
7
5
4
4
3
3
2
2
2
3
4
6
11
12
13
14
15

Dew Point (°C)

2
2
3
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
3
3
3
2

Relative Humidity (%)

41
43
46
52
58
62
66
72
78
84
83
87
91
93
92
91
88
81
72
63
57
52
47
43

Pressure (mb)

1016
1016
1015
1015
1015
1015
1015
1015
1015
1014
1015
1014
1014
1013
1013
1013
1013
1013
1013
1012
1012
1012
1011
1011

Ozone (du)

368
370
371
372
373
375
377
385
393
405
417
421
422
422
424
425
429
425
417
411
409
410
409
405

Tuesday 27

Full Moon 99%

21:39

07:04

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

Sun - Rise: 06:13, Set: 20:58, Transit: 13:36. Moon - Rise: 21:39, Set: 07:04. Civil Dark: 21:37 - 05:34. Nautical Dark: 22:26 - 04:44. Astro Dark: 23:27 - 03:42

Total Clouds (% Sky Obscured)

91
91
91
91
31
31
31
31
31
31
26
26
26
26
26
26
52
52
52
52
52
52
98
98

Low Clouds (% Sky Obscured)

77
77
77
77
18
18
18
18
18
18
9
9
9
9
9
9
38
38
38
38
38
38
76
76

Medium Clouds (% Sky Obscured)

2
2
2
2
22
22
22
22
22
22
23
23
23
23
23
23
40
40
40
40
40
40
98
98

High Clouds (% Sky Obscured)

70
70
70
70
8
8
8
8
8
8
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
1
1
1
1
1
2
2

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.01
0.01
0.02
0.02
0.04
0.06
0.05

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

15
15
15
14
13
12
10
6
5
5
4
4
3
3
3
3
4
5
7
11
12
13
13
14

Dew Point (°C)

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

Relative Humidity (%)

41
43
46
52
55
60
66
71
76
80
86
93
99
100
100
100
97
90
82
74
68
62
58
56

Pressure (mb)

1010
1010
1010
1009
1010
1010
1010
1011
1011
1011
1011
1010
1010
1010
1010
1010
1010
1010
1010
1009
1009
1009
1009
1009

Ozone (du)

401
397
394
390
389
391
395
398
399
398
397
395
393
392
393
396
398
399
399
399
399
398
397
396

Wednesday 28

Waning Gibbous 95%

23:11

07:33

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 Bad
08 OK
09 OK
10 OK
11 OK
12 OK
13 OK
14 Bad
15 Bad

Sun - Rise: 06:11, Set: 21:00, Transit: 13:36. Moon - Rise: 23:11, Set: 07:33. Civil Dark: 21:39 - 05:32. Nautical Dark: 22:28 - 04:41. Astro Dark: 23:30 - 03:38

Total Clouds (% Sky Obscured)

98
98
98
98
70
70
70
70
70
70
70
70
70
70
70
70
34
34
34
34
34
34
100
100

Low Clouds (% Sky Obscured)

76
76
76
76
70
70
70
70
70
70
70
70
70
70
70
70
34
34
34
34
34
34
100
100

Medium Clouds (% Sky Obscured)

98
98
98
98
0
0
0
0
0
0
11
11
11
11
11
11
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
Very Light Rain
None

Precipitation Probability (%)

2
1
1
0
0
0
0
0
0
0
0
0
1
1
2
2
2
2
0
0
2
3
6
4

Precipitation Amount (mm)

0.03
0.02
0.01
0
0
0
0
0
0
0
0
0
0.01
0.01
0.01
0.01
0.01
0.01
0
0
0.01
0.06
0.1
0.06

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

57
61
69
76
81
82
83
86
89
92
97
100
100
100
100
100
100
99
89
79
71
66
60
57

Pressure (mb)

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

Ozone (du)

396
395
392
388
386
387
389
390
390
388
387
387
387
388
390
393
395
396
396
396
395
393
391
389

Forecast for Hilversum, Hilversum, NL (52.22,5.15)

Generated: 22/04/21 16:37:22. Forecast: 22/04/21 to 28/04/21. Timezone: UTC+2.00