Clear Outside v1.0 - International Weather Forecasts For Astronomers

Monday 31

Waning Gibbous 83%

21:05

12:11

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

Sun - Rise: 06:47, Set: 20:25, Transit: 13:35. Moon - Rise: 21:05, Set: 12:11. Civil Dark: 21:01 - 06:11. Nautical Dark: 21:45 - 05:27. Astro Dark: 22:35 - 04:38

Total Clouds (% Sky Obscured)

96
97
79
100
93
96
54
35
37
36
28
28
54
69
98
99
92
95
70
64
58
53
37
44

Low Clouds (% Sky Obscured)

68
61
69
67
35
27
51
35
37
36
28
28
28
31
39
43
41
48
40
24
48
52
37
44

Medium Clouds (% Sky Obscured)

23
16
30
70
48
40
5
0
0
0
0
2
0
0
0
30
75
81
32
27
20
15
3
4

High Clouds (% Sky Obscured)

96
28
53
84
92
64
1
0
0
0
0
0
33
46
94
98
75
47
6
20
5
0
1
3

ISS Passover

Visibility (miles)

4
4
3
5
4
6
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

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

Precipitation Probability (%)

95
95
95
66
59
41
16
9
5
7
6
3
1
3
6
4
0
2
2
1
1
0
0
1

Precipitation Amount (mm)

1.3
0.6
0.7
0.3
0.2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

16
15
15
15
15
15
15
14
14
15
14
14
14
14
13
13
14
13
13
13
12
11
10
9

Relative Humidity (%)

81
81
78
83
86
83
85
86
89
92
92
95
95
93
93
93
92
90
92
89
78
66
57
53

Pressure (mb)

1008
1008
1009
1010
1010
1011
1011
1012
1013
1014
1014
1015
1015
1015
1015
1016
1016
1016
1017
1017
1018
1018
1019
1019

Ozone (du)

336
337
336
336
335
333
334
333
329
327
325
322
321
319
318
319
319
319
319
317
316
316
316
315

Tuesday 1

Waning Gibbous 74%

21:20

No Set

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

Sun - Rise: 06:49, Set: 20:23, Transit: 13:35. Moon - Rise: 21:20, Set: No Set. Civil Dark: 20:59 - 06:13. Nautical Dark: 21:43 - 05:29. Astro Dark: 22:32 - 04:41

Total Clouds (% Sky Obscured)

39
42
30
61
68
40
1
1
2
3
92
100
100
100
100
100
64
56
63
53
69
64
62
73

Low Clouds (% Sky Obscured)

39
37
21
53
42
24
0
0
0
0
0
0
3
0
0
1
13
16
8
23
32
52
35
16

Medium Clouds (% Sky Obscured)

6
9
10
13
13
1
1
1
2
3
31
3
3
53
81
40
64
56
63
53
56
7
7
7

High Clouds (% Sky Obscured)

3
6
2
2
22
31
0
0
1
2
92
100
100
100
100
100
39
24
30
40
20
30
37
63

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 (%)

1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
1
3
5
16

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

17
17
17
18
18
17
17
17
16
15
14
11
11
10
10
11
10
11
10
11
13
15
18
18

Dew Point (°C)

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

Relative Humidity (%)

48
50
51
51
53
55
62
72
78
80
83
81
83
81
81
83
81
75
76
72
70
64
57
52

Pressure (mb)

1019
1020
1020
1020
1019
1020
1020
1020
1020
1020
1020
1020
1020
1020
1020
1019
1019
1019
1019
1019
1020
1020
1020
1020

Ozone (du)

313
314
315
316
317
318
319
318
316
315
314
315
317
318
318
318
319
320
324
328
327
325
324
320

Wednesday 2

Waning Gibbous 63%

21:41

13:39

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

Sun - Rise: 06:50, Set: 20:21, Transit: 13:35. Moon - Rise: 21:41, Set: 13:39. Civil Dark: 20:56 - 06:15. Nautical Dark: 21:40 - 05:31. Astro Dark: 22:29 - 04:43

Total Clouds (% Sky Obscured)

98
100
89
100
83
93
73
96
99
98
100
100
100
89
100
91
90
96
100
100
100
99
100
100

Low Clouds (% Sky Obscured)

40
42
48
46
24
13
0
28
2
14
28
74
82
69
89
71
72
63
57
68
75
81
82
78

Medium Clouds (% Sky Obscured)

34
19
19
74
54
36
73
96
97
94
74
92
93
83
72
5
16
23
22
23
30
33
31
67

High Clouds (% Sky Obscured)

79
99
81
100
64
40
38
33
82
71
96
94
97
29
100
67
45
88
99
100
100
94
99
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 (%)

4
1
1
1
2
0
0
9
7
9
6
2
1
3
2
3
2
2
3
6
5
5
19
21

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

Chance of Frost

Temperature (°C)

21
21
22
21
21
20
19
18
17
16
17
17
17
17
17
17
17
16
17
17
18
19
20
21

Feels Like (°C)

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

Dew Point (°C)

10
9
10
11
11
11
11
12
11
12
11
12
12
13
13
13
14
15
15
15
15
15
16
16

Relative Humidity (%)

49
46
48
51
54
56
61
69
68
74
69
71
72
76
76
76
83
90
90
88
82
80
76
75

Pressure (mb)

1020
1020
1020
1020
1020
1020
1020
1020
1020
1020
1019
1019
1019
1018
1018
1018
1017
1017
1017
1017
1017
1017
1017
1017

Ozone (du)

319
317
314
311
310
307
305
304
304
304
305
305
305
305
304
303
301
298
296
294
293
291
289
288

Thursday 3

Waning Gibbous 51%

22:12

15:06

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

Sun - Rise: 06:52, Set: 20:19, Transit: 13:34. Moon - Rise: 22:12, Set: 15:06. Civil Dark: 20:54 - 06:17. Nautical Dark: 21:37 - 05:33. Astro Dark: 22:25 - 04:46

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
99
99
99
99

Low Clouds (% Sky Obscured)

73
67
61
56
67
58
88
91
78
96
93
90
88
87
87
86
89
87
87
86
85
85
55
69

Medium Clouds (% Sky Obscured)

85
92
96
95
63
68
99
100
38
94
69
73
55
35
42
83
84
85
88
81
86
87
88
92

High Clouds (% Sky Obscured)

100
100
99
100
81
63
33
33
44
7
7
48
55
73
87
100
100
100
100
97
70
90
85
85

ISS Passover

Visibility (miles)

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

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

Precipitation Probability (%)

43
29
43
39
62
75
92
80
77
89
95
95
85
78
95
95
80
62
60
69
71
50
31
44

Precipitation Amount (mm)

0.2
0
0
0
0.3
0.5
0.8
0.6
0.5
0.6
1.6
0.9
0.2
0.4
1.3
1.2
0.5
0
0
0.2
0.4
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

21
22
21
20
20
20
19
19
18
18
18
18
19
19
19
18
18
18
18
18
18
18
19
20

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

69
80
88
91
92
92
91
93
93
96
95
93
95
93
95
96
96
96
96
95
88
93
89
82

Pressure (mb)

1017
1017
1017
1017
1016
1016
1016
1016
1015
1015
1014
1014
1014
1013
1013
1013
1012
1012
1012
1012
1012
1012
1012
1012

Ozone (du)

287
287
289
289
290
289
287
284
285
285
283
283
285
284
284
284
286
288
292
294
294
297
302
303

Friday 4

Third Quarter 39%

22:58

16:27

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

Sun - Rise: 06:54, Set: 20:16, Transit: 13:34. Moon - Rise: 22:58, Set: 16:27. Civil Dark: 20:51 - 06:18. Nautical Dark: 21:35 - 05:35. Astro Dark: 22:22 - 04:48

Total Clouds (% Sky Obscured)

99
99
100
100
96
99
93
97
94
82
61
45
32
43
55
68
64
63
61
64
67
68
60
53

Low Clouds (% Sky Obscured)

77
87
62
57
58
56
57
47
49
32
32
32
32
36
38
44
51
46
46
42
48
55
52
49

Medium Clouds (% Sky Obscured)

93
96
98
30
27
25
29
35
37
35
26
13
0
2
3
5
16
29
41
36
33
34
24
12

High Clouds (% Sky Obscured)

81
70
56
48
57
77
84
92
83
77
47
25
1
7
10
15
8
6
5
12
15
14
8
4

ISS Passover

Visibility (miles)

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

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

Precipitation Probability (%)

50
69
81
83
75
65
65
64
47
23
18
11
2
13
18
19
32
41
48
50
50
51
49
50

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

78
75
84
85
86
82
82
85
89
90
92
92
92
90
89
87
87
87
89
90
86
82
78
74

Pressure (mb)

1012
1012
1012
1012
1011
1012
1012
1012
1012
1013
1013
1013
1013
1013
1013
1014
1014
1015
1015
1016
1016
1017
1018
1018

Ozone (du)

304
307
310
312
312
313
316
321
326
329
331
332
335
339
341
344
346
347
348
349
347
344
341
339

Saturday 5

Waning Crescent 28%

00:04

17:33

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

Sun - Rise: 06:55, Set: 20:14, Transit: 13:34. Moon - Rise: 00:04, Set: 17:33. Civil Dark: 20:49 - 06:20. Nautical Dark: 21:32 - 05:37. Astro Dark: 22:19 - 04:51

Total Clouds (% Sky Obscured)

45
48
50
54
56
59
62
49
38
27
36
45
53
59
65
66
58
54
46
56
62
70
74
76

Low Clouds (% Sky Obscured)

45
48
50
52
53
58
62
49
34
22
28
35
42
43
44
45
33
21
9
7
4
4
7
13

Medium Clouds (% Sky Obscured)

0
11
16
23
7
2
0
0
0
0
0
0
0
2
5
9
8
8
7
11
16
21
22
22

High Clouds (% Sky Obscured)

0
0
0
0
1
1
2
3
3
4
17
25
24
52
61
65
55
54
46
56
58
56
59
62

ISS Passover

Visibility (miles)

7
8
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

Very Light Rain
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 (%)

51
45
40
37
31
25
18
14
10
0
2
7
4
4
5
9
7
3
1
7
6
7
9
7

Precipitation Amount (mm)

0.2
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
15
15
15
15
14
12
11
10
8
7
6
6
5
5
5
5
5
4
4
4
5
5
5

Chance of Frost

Temperature (°C)

18
18
18
18
18
17
16
16
15
14
13
13
13
12
12
11
11
11
12
12
13
15
17
17

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

71
69
66
63
61
61
61
59
64
66
70
69
69
67
73
79
84
86
86
87
76
68
61
57

Pressure (mb)

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

Ozone (du)

336
333
331
328
326
324
322
320
319
318
317
315
313
312
310
308
306
305
304
302
301
299
297
297

Sunday 6

Waning Crescent 18%

01:27

18:19

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

Sun - Rise: 06:57, Set: 20:12, Transit: 13:33. Moon - Rise: 01:27, Set: 18:19. Civil Dark: 20:47 - 06:22. Nautical Dark: 21:29 - 05:39. Astro Dark: 22:16 - 04:53

Total Clouds (% Sky Obscured)

80
70
59
46
45
48
46
42
38
38
37
36
40
46
52
52
58
54
59

Low Clouds (% Sky Obscured)

27
23
13
2
1
1
0
1
4
6
6
4
0
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

26
30
29
26
38
48
46
42
38
38
37
36
40
46
52
46
43
38
33

High Clouds (% Sky Obscured)

58
46
34
21
27
32
28
10
10
10
10
10
20
46
52
52
58
54
59

ISS Passover

Visibility (miles)

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

Precipitation Type

None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

6
1
0
0
0
0
0
0
0
0
10
12
8
9
8
2
12
9
3

Precipitation Amount (mm)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

14
16
19
18
18
19
20
20
17
18
18
18
17
17
15
15
14
14
14

Dew Point (°C)

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

Relative Humidity (%)

52
50
49
48
47
53
60
67
69
73
76
78
79
79
78
76
74
72
74

Pressure (mb)

1027
1026
1026
1026
1025
1025
1025
1024
1024
1024
1024
1024
1024
1023
1023
1023
1022
1022
1022

Ozone (du)

296
296
294
293
291
291
290
289
289
290
290
290
290
291
291
290
290
289
288

Forecast for Frankhuis, Gemeente Zwolle, Netherlands (52.52,6.08)

Generated: 31/08/26 13:27:17. Forecast: 31/08/26 to 06/09/26. Timezone: UTC+2.00