Clear Outside v1.0 - International Weather Forecasts For Astronomers

Thursday 17

Waning Gibbous 60%

00:01

13:46

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

Sun - Rise: 05:33, Set: 21:52, Transit: 13:42. Moon - Rise: 00:01, Set: 13:46. Civil Dark: 22:38 - 04:46. Nautical Dark: 23:48 - 03:36. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

31
26
85
85
100
100
96
90
86
78
92
93
88
75
93
90
73
60
33
54
97
82
82
27

Low Clouds (% Sky Obscured)

25
23
49
75
96
64
66
60
54
78
79
78
82
64
80
82
60
45
33
39
20
18
0
4

Medium Clouds (% Sky Obscured)

0
0
0
37
50
30
24
16
9
26
25
20
15
15
26
18
14
7
0
0
0
0
0
0

High Clouds (% Sky Obscured)

0
0
0
0
0
1
1
0
1
1
1
1
1
1
0
0
0
1
0
30
96
77
76
22

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
23
20
19
10
2
6
1
1
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)

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

Chance of Frost

Temperature (°C)

14
13
14
14
15
16
16
17
18
19
20
20
20
21
22
22
22
22
21
21
20
19
17
16

Feels Like (°C)

15
14
12
12
13
13
15
15
17
18
19
18
18
20
19
19
19
20
20
20
19
18
18
17

Dew Point (°C)

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

Relative Humidity (%)

94
95
88
91
86
88
87
85
83
78
75
72
69
61
59
60
57
58
59
62
67
77
90
93

Pressure (mb)

1015
1016
1016
1016
1016
1016
1016
1016
1016
1016
1017
1017
1017
1017
1016
1016
1016
1016
1016
1016
1016
1016
1016
1016

Ozone (du)

331
330
327
326
324
322
320
316
315
314
315
317
316
312
311
309
309
308
309
308
307
306
306
305

Friday 18

Third Quarter 48%

00:12

15:15

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

Sun - Rise: 05:34, Set: 21:50, Transit: 13:42. Moon - Rise: 00:12, Set: 15:15. Civil Dark: 22:37 - 04:48. Nautical Dark: 23:46 - 03:38. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

20
25
45
43
71
96
97
88
84
60
62
81
100
100
100
100
99
100
100
100
97
50
7
25

Low Clouds (% Sky Obscured)

12
0
22
19
34
47
42
19
13
30
27
48
55
26
55
45
53
62
80
66
10
0
0
20

Medium Clouds (% Sky Obscured)

0
0
0
0
8
43
39
36
70
55
55
20
1
2
2
5
32
37
43
29
15
1
1
0

High Clouds (% Sky Obscured)

7
20
20
20
20
79
84
35
35
48
61
62
100
100
100
100
97
100
100
100
92
30
3
1

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
4
4
4
3
3
3
3
3
3
2
2
2
1
2
2
2
4
8
8
8
7
7
7

Chance of Frost

Temperature (°C)

15
15
15
14
14
14
14
15
16
18
20
21
23
24
25
26
26
26
25
24
23
21
19
18

Feels Like (°C)

17
16
14
14
14
14
13
15
16
19
20
22
23
25
26
26
26
26
24
23
22
20
18
19

Dew Point (°C)

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

Relative Humidity (%)

95
95
95
95
95
95
95
90
82
75
65
59
54
50
47
45
44
45
50
58
62
69
78
89

Pressure (mb)

1016
1016
1015
1015
1015
1015
1015
1015
1015
1015
1015
1015
1015
1015
1014
1014
1013
1013
1013
1013
1013
1013
1013
1013

Ozone (du)

302
300
301
301
302
303
304
304
304
306
308
307
308
309
310
311
314
316
319
321
322
322
323
322

Saturday 19

Waning Crescent 36%

00:27

16:48

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

Sun - Rise: 05:35, Set: 21:49, Transit: 13:42. Moon - Rise: 00:27, Set: 16:48. Civil Dark: 22:35 - 04:49. Nautical Dark: 23:43 - 03:41. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

50
45
44
99
100
43
86
52
17
24
100
82
68
57
35
84
100
100
100
100
100
70
100
100

Low Clouds (% Sky Obscured)

28
26
29
31
31
28
18
10
2
0
22
26
46
43
7
0
13
16
12
11
0
17
38
27

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
8
17
14
61
13
20
25
30
1
57
49
78
61
55
50
93
53

High Clouds (% Sky Obscured)

10
10
14
98
100
9
71
37
10
24
100
60
22
36
19
84
100
100
100
100
100
50
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
1
67
5
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
Light Rain
None

Precipitation Probability (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
3
5
6
7
14
66
55

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
0.5
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

17
17
17
16
16
16
16
17
19
21
23
24
25
26
25
27
29
29
28
27
26
25
23
21

Feels Like (°C)

18
16
16
16
16
16
16
17
19
20
22
23
23
24
24
26
27
26
26
25
24
23
23
22

Dew Point (°C)

16
15
16
15
15
15
15
16
16
15
15
15
15
14
15
15
14
14
15
16
16
16
15
19

Relative Humidity (%)

92
92
93
93
95
95
96
92
81
70
63
57
52
48
53
46
41
41
45
50
53
58
60
86

Pressure (mb)

1013
1012
1012
1012
1011
1011
1011
1010
1010
1010
1010
1009
1009
1008
1007
1007
1006
1006
1006
1005
1005
1004
1005
1005

Ozone (du)

320
321
321
321
319
318
318
317
315
313
315
318
319
320
322
322
323
326
326
325
326
329
321
320

Sunday 20

Waning Crescent 25%

00:46

18:20

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: 05:37, Set: 21:48, Transit: 13:42. Moon - Rise: 00:46, Set: 18:20. Civil Dark: 22:34 - 04:51. Nautical Dark: 23:41 - 03:44. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

100
100
90
80
70
80
89
100
100
100
100
86
100
100
100
100
100
98
83
98
100
100
100
95

Low Clouds (% Sky Obscured)

16
29
31
34
37
49
78
86
80
74
66
58
64
82
78
74
56
63
65
79
68
33
17
21

Medium Clouds (% Sky Obscured)

53
45
30
35
50
50
50
50
67
85
68
42
96
94
93
93
91
88
38
35
36
29
26
25

High Clouds (% Sky Obscured)

100
100
83
65
48
68
85
100
100
100
100
84
98
100
100
100
100
98
83
90
95
100
100
67

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
5
1
3
9
9
9
9
9
9
3
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
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
None
Very Light Rain
None

Precipitation Probability (%)

44
10
23
28
21
17
14
9
7
6
5
16
47
95
95
94
85
95
95
95
86
61
53
52

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0.8
1.1
0.4
0.4
1.1
1.4
1.5
0.5
0
0.2
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

20
20
19
18
18
18
18
19
19
19
19
21
23
23
20
20
20
21
21
21
20
20
18
18

Feels Like (°C)

21
20
19
18
18
17
18
19
19
20
20
21
23
23
19
20
21
21
21
22
21
21
19
18

Dew Point (°C)

18
18
17
17
17
17
17
17
17
17
17
15
13
12
19
19
19
18
17
15
14
15
16
17

Relative Humidity (%)

86
89
91
93
96
93
92
92
92
88
88
68
52
50
91
95
95
84
76
68
68
72
85
93

Pressure (mb)

1005
1005
1005
1004
1004
1004
1004
1004
1004
1004
1005
1005
1005
1004
1005
1005
1005
1005
1004
1004
1004
1004
1005
1005

Ozone (du)

320
318
318
318
322
322
326
325
327
332
335
332
330
327
327
329
336
341
347
348
346
343
341
340

Monday 21

Waning Crescent 15%

01:16

19:44

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: 05:38, Set: 21:46, Transit: 13:42. Moon - Rise: 01:16, Set: 19:44. Civil Dark: 22:32 - 04:53. Nautical Dark: 23:38 - 03:46. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

91
87
85
86
68
90
82
88
91
87
86
83
80
75
90
75
99
82
85
86
81
83
86
72

Low Clouds (% Sky Obscured)

25
31
34
45
41
47
57
66
58
50
41
39
36
36
43
32
48
31
26
23
46
40
31
36

Medium Clouds (% Sky Obscured)

20
25
51
86
16
90
40
43
40
34
30
34
41
56
60
62
72
64
58
52
21
8
10
10

High Clouds (% Sky Obscured)

33
0
5
0
0
0
0
0
30
57
86
60
33
0
29
58
82
82
85
86
61
61
52
50

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
8
4
8
6
9
8
6
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
Light Rain
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
Light Rain
Light Rain
Very Light Rain
None
None
None
None

Precipitation Probability (%)

45
59
50
56
36
16
8
15
11
25
21
38
45
35
47
48
54
70
71
68
55
53
36
58

Precipitation Amount (mm)

0
0.4
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.4
0.4
0.3
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

17
17
17
16
16
16
16
16
17
18
19
20
21
22
23
21
21
20
20
19
18
17
16
15

Feels Like (°C)

17
16
17
16
16
17
15
16
17
17
17
18
19
20
21
18
20
18
20
20
20
20
19
19

Dew Point (°C)

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

Relative Humidity (%)

96
95
98
95
95
95
96
93
90
82
71
60
56
52
48
59
57
65
72
77
81
85
87
92

Pressure (mb)

1005
1004
1004
1004
1004
1004
1004
1004
1004
1004
1004
1004
1005
1004
1004
1005
1005
1005
1005
1005
1005
1005
1005
1006

Ozone (du)

342
343
346
354
354
354
352
351
349
353
350
350
350
355
357
357
357
356
355
354
354
355
355
356

Tuesday 22

Waning Crescent 8%

02:02

20:51

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: 05:40, Set: 21:45, Transit: 13:42. Moon - Rise: 02:02, Set: 20:51. Civil Dark: 22:30 - 04:54. Nautical Dark: 23:36 - 03:49. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

62
58
63
73
85
86
88
87
87
85
84
81
78
75
80
85
91
92
93
93
95
97
100
100

Low Clouds (% Sky Obscured)

32
33
37
45
52
64
75
82
80
75
76
74
69
65
66
68
69
64
60
55
54
57
56
52

Medium Clouds (% Sky Obscured)

6
11
36
53
64
66
70
76
82
82
82
63
43
23
30
37
43
45
46
49
56
66
71
76

High Clouds (% Sky Obscured)

49
48
47
39
46
62
76
85
74
67
55
25
7
1
3
4
5
10
10
15
25
25
10
40

ISS Passover

Visibility (miles)

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

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

Precipitation Probability (%)

71
74
69
63
56
70
80
86
87
84
68
67
63
53
45
38
34
42
42
40
33
26
10
17

Precipitation Amount (mm)

0.4
0.4
0.3
0.2
0
0.3
0.5
0.5
0.6
0.6
0.3
0.3
0.3
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

19
18
18
15
15
15
15
15
15
15
16
15
16
16
16
17
16
15
15
15
15
13
14
14

Dew Point (°C)

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

Relative Humidity (%)

92
93
93
95
93
95
95
95
96
93
92
90
82
77
72
69
64
60
62
63
66
70
74
79

Pressure (mb)

1006
1006
1006
1005
1005
1005
1005
1006
1006
1006
1007
1007
1008
1008
1009
1009
1009
1009
1010
1010
1010
1010
1010
1011

Ozone (du)

355
354
353
350
346
343
342
341
340
340
340
341
340
340
340
339
338
338
338
338
338
339
339
339

Wednesday 23

Waning Crescent 3%

03:07

21:36

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: 05:41, Set: 21:44, Transit: 13:42. Moon - Rise: 03:07, Set: 21:36. Civil Dark: 22:29 - 04:56. Nautical Dark: 23:33 - 03:51. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

100
100
98
97
95
88
82
75
80
83
86
81
76
69
75
81
87
89
91
93
91
88
86
83

Low Clouds (% Sky Obscured)

46
42
49
55
61
56
54
54
59
67
73
70
67
61
62
66
69
71
72
76
74
76
74
71

Medium Clouds (% Sky Obscured)

82
88
88
89
88
76
62
50
46
43
30
28
26
26
27
31
33
42
52
57
56
53
51
40

High Clouds (% Sky Obscured)

67
99
73
47
21
16
6
0
0
0
0
0
0
0
0
1
3
5
11
14
19
18
14
11

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

Precipitation Probability (%)

20
19
33
36
36
35
34
31
47
56
58
52
46
41
40
37
31
26
20
10
26
32
34
43

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

16
16
16
16
16
15
16
16
16
17
18
19
19
19
19
19
19
19
19
18
18
17
16
16

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

81
82
85
86
86
89
89
89
89
82
73
68
63
60
57
55
55
54
56
59
62
65
69
73

Pressure (mb)

1011
1010
1010
1010
1010
1010
1010
1011
1011
1011
1011
1011
1012
1012
1012
1012
1012
1012
1012
1012
1011
1012
1012
1012

Ozone (du)

339
339
339
339
338
338
339
340
341
344
346
349
349
348
347
347
347
347
347
348
348
350
352
354

Forecast for Heerenveen, Gemeente Heerenveen, Netherlands (52.96,5.92)

Generated: 17/07/25 06:51:16. Forecast: 17/07/25 to 23/07/25. Timezone: UTC+2.00