Clear Outside v1.0 - International Weather Forecasts For Astronomers

Thursday 18

Waning Crescent 6%

04:09

19:03

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

Sun - Rise: 07:17, Set: 19:43, Transit: 13:29. Moon - Rise: 04:09, Set: 19:03. Civil Dark: 20:17 - 06:43. Nautical Dark: 20:57 - 06:03. Astro Dark: 21:40 - 05:20

Total Clouds (% Sky Obscured)

84
81
76
34
51
50
41
85
65
51
62
70
82
64
57
32
9
14
45
56
100
100
100
100

Low Clouds (% Sky Obscured)

37
32
25
23
23
19
25
29
37
37
45
50
47
33
30
8
2
6
27
23
19
0
0
0

Medium Clouds (% Sky Obscured)

35
24
12
0
0
0
0
33
0
3
3
3
2
3
2
3
3
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

1
2
1
2
11
23
3
10
15
2
2
16
54
17
17
18
4
6
25
19
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
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)

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

Chance of Frost

Temperature (°C)

19
19
18
18
18
17
16
16
16
15
15
15
15
15
16
18
20
21
23
24
24
25
25
23

Feels Like (°C)

18
18
18
18
18
16
15
16
14
14
15
15
15
14
15
16
18
22
23
24
24
24
24
23

Dew Point (°C)

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

Relative Humidity (%)

73
76
78
81
85
86
87
90
90
92
95
93
93
90
83
76
69
63
57
54
52
51
54
61

Pressure (mb)

1020
1020
1021
1021
1021
1021
1021
1021
1021
1021
1021
1021
1022
1022
1022
1022
1022
1022
1022
1021
1020
1020
1019
1019

Ozone (du)

254
254
254
255
255
256
255
255
254
253
251
250
248
250
250
249
248
249
249
249
248
249
250
251

Friday 19

Waning Crescent 2%

05:29

19:03

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

Sun - Rise: 07:19, Set: 19:40, Transit: 13:28. Moon - Rise: 05:29, Set: 19:03. Civil Dark: 20:14 - 06:45. Nautical Dark: 20:55 - 06:04. Astro Dark: 21:38 - 05:22

Total Clouds (% Sky Obscured)

70
75
59
44
4
46
9
34
48
81
75
42
100
100
98
100
100
100
91
60
100
92
100
100

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
1
15

Medium Clouds (% Sky Obscured)

0
14
0
33
0
20
2
24
45
36
15
42
91
89
65
76
68
82
20
60
75
77
71
63

High Clouds (% Sky Obscured)

70
75
59
3
2
32
5
2
7
65
72
6
100
100
96
96
100
87
74
19
98
74
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
0
0
0
0
0
8
8
7
0
0
0
1
0
1
3
0
0
7
41
35

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

Chance of Frost

Temperature (°C)

22
20
19
19
19
18
18
17
17
17
16
16
16
16
18
20
21
23
24
26
26
26
24
22

Feels Like (°C)

21
21
19
19
19
18
18
17
17
16
16
15
14
15
16
18
20
22
22
24
25
25
21
22

Dew Point (°C)

16
15
14
13
13
13
13
13
13
12
12
12
13
12
13
13
14
13
13
15
14
15
16
18

Relative Humidity (%)

70
72
71
69
70
71
73
76
76
75
74
79
81
78
72
65
65
53
49
51
47
50
61
76

Pressure (mb)

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

Ozone (du)

251
251
252
252
253
253
253
253
254
254
253
251
251
251
251
251
250
249
248
248
248
249
249
249

Saturday 20

Waning Crescent 0%

06:45

19:13

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
13 Bad
14 Bad
15 Bad
16 Bad
17 Bad
18 Bad

Sun - Rise: 07:21, Set: 19:38, Transit: 13:28. Moon - Rise: 06:45, Set: 19:13. Civil Dark: 20:12 - 06:47. Nautical Dark: 20:52 - 06:06. Astro Dark: 21:35 - 05:24

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
80
99
100
92
97
100
100
100
100
100
100
99
99
100
100
100
100

Low Clouds (% Sky Obscured)

80
39
22
32
44
68
65
71
59
51
32
38
29
25
24
43
40
42
35
40
45
49
38
42

Medium Clouds (% Sky Obscured)

86
51
45
31
51
39
38
50
66
68
34
37
10
0
61
31
43
50
41
64
53
53
66
61

High Clouds (% Sky Obscured)

100
100
100
100
100
100
100
22
93
100
77
88
100
100
100
100
100
100
96
92
88
84
90
95

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

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 (%)

50
53
31
23
12
41
21
1
14
8
1
0
0
0
2
0
0
0
0
0
0
0
1
2

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)

5
6
8
9
9
9
9
10
11
13
12
12
11
12
13
13
15
16
17
17
16
15
13
10

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

22
21
20
19
19
18
18
18
17
14
14
13
11
11
11
12
12
13
13
12
12
12
12
12

Dew Point (°C)

19
18
18
17
17
16
17
18
16
14
13
13
12
12
11
11
10
9
8
8
9
8
8
8

Relative Humidity (%)

85
85
86
81
82
84
90
95
89
81
86
89
89
87
80
78
68
58
54
54
57
58
61
64

Pressure (mb)

1009
1009
1009
1009
1009
1009
1009
1009
1009
1009
1009
1010
1010
1010
1011
1011
1011
1011
1011
1012
1012
1012
1012
1013

Ozone (du)

251
252
252
252
254
256
257
259
259
260
262
264
265
264
265
267
269
271
271
271
271
271
273
274

Sunday 21

New Moon 1%

08:00

19:22

19 Bad
20 Bad
21 Bad
22 Bad
23 Bad
00 OK
01 OK
02 OK
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

Sun - Rise: 07:22, Set: 19:35, Transit: 13:28. Moon - Rise: 08:00, Set: 19:22. Civil Dark: 20:09 - 06:48. Nautical Dark: 20:50 - 06:08. Astro Dark: 21:32 - 05:26

Total Clouds (% Sky Obscured)

100
96
91
88
60
45
35
35
51
54
52
64
80
77
75
73
73
68
71
70
75
78
56
46

Low Clouds (% Sky Obscured)

39
39
44
51
35
35
33
31
51
54
48
56
75
68
61
58
56
42
46
47
55
63
44
40

Medium Clouds (% Sky Obscured)

40
52
58
10
4
2
1
1
0
0
2
8
9
11
11
14
15
18
21
20
20
19
13
6

High Clouds (% Sky Obscured)

100
93
84
73
36
15
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

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
2
5
2
3
3
1
5
4
1
13
3
3
9
9
19
13
10
6
10
13
13
17
8

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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

62
62
62
65
69
75
80
84
84
76
74
78
73
61
60
63
61
52
43
41
43
50
52
59

Pressure (mb)

1013
1013
1014
1014
1015
1015
1015
1016
1016
1016
1017
1017
1018
1018
1019
1020
1020
1021
1021
1021
1021
1021
1021
1021

Ozone (du)

274
276
280
281
286
287
287
288
289
291
292
293
295
296
300
302
304
307
310
310
311
313
313
312

Monday 22

Waxing Crescent 3%

09:13

19:31

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

Sun - Rise: 07:24, Set: 19:33, Transit: 13:27. Moon - Rise: 09:13, Set: 19:31. Civil Dark: 20:07 - 06:50. Nautical Dark: 20:47 - 06:10. Astro Dark: 21:29 - 05:28

Total Clouds (% Sky Obscured)

30
20
11
2
4
6
25
40
48
35
37
19
12
67
77
86
90
91
91
93
96
100
95
90

Low Clouds (% Sky Obscured)

30
20
11
1
3
5
16
27
41
35
36
19
11
0
3
5
22
42
53
59
64
67
64
57

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
25
8
8
9
9
15
25
40
45
45
40

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
29
54
81
76
65
55
60
61

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
1
1
2
1
0
0
0
0
2
2
5
14
18
19
22
20
12
15
14
6
10
9

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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

64
68
68
67
68
69
69
67
66
67
73
70
78
81
78
76
74
68
62
56
57
58
58
60

Pressure (mb)

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

Ozone (du)

307
305
302
301
301
300
299
299
299
299
299
300
301
302
302
303
303
304
305
306
308
310
312
311

Tuesday 23

Waxing Crescent 7%

10:27

19:40

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
13 Bad
14 Bad
15 Bad
16 Bad
17 Bad
18 Bad

Sun - Rise: 07:26, Set: 19:31, Transit: 13:27. Moon - Rise: 10:27, Set: 19:40. Civil Dark: 20:05 - 06:52. Nautical Dark: 20:45 - 06:12. Astro Dark: 21:27 - 05:30

Total Clouds (% Sky Obscured)

85
89
93
95
90
79
71
69
62
55
42
38
40
50
55
67
65
60
56
61
76
77
73
74

Low Clouds (% Sky Obscured)

49
40
32
24
26
26
26
16
8
0
18
38
40
50
55
60
49
37
13
15
20
33
46
51

Medium Clouds (% Sky Obscured)

40
35
15
15
10
10
10
15
25
30
30
35
35
25
20
20
20
25
40
40
55
55
55
55

High Clouds (% Sky Obscured)

27
37
52
50
43
58
71
69
62
55
42
38
40
50
55
67
65
60
56
61
76
77
73
74

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
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain

Precipitation Probability (%)

5
17
24
30
38
40
40
44
43
37
71
90
95
92
82
75
87
95
95
95
95
95
95
90

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0.4
0.6
0.9
0.7
0.5
0.4
0.5
0.7
0.9
0.9
0.8
0.6
0.6
0.6

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

13
13
8
8
8
8
8
7
6
7
7
7
7
6
7
7
8
8
9
9
14
13
12
12

Dew Point (°C)

5
5
4
4
4
4
4
3
3
4
4
4
4
4
4
4
4
4
4
4
4
5
5
5

Relative Humidity (%)

62
64
64
65
66
67
69
70
71
74
75
77
78
79
70
60
54
50
49
46
47
49
51
57

Pressure (mb)

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

Ozone (du)

311
311
310
310
309
310
310
310
309
308
308
307
306
306
305
304
304
303
303
303
303
302
302
302

Wednesday 24

Waxing Crescent 13%

11:42

19:51

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
13 Bad

Sun - Rise: 07:27, Set: 19:28, Transit: 13:27. Moon - Rise: 11:42, Set: 19:51. Civil Dark: 20:02 - 06:53. Nautical Dark: 20:42 - 06:13. Astro Dark: 21:24 - 05:32

Total Clouds (% Sky Obscured)

76
79
82
85
84
84
77
73
68
58
64
70
78
80
89
91
86
81
77

Low Clouds (% Sky Obscured)

59
70
74
81
83
78
75
69
62
58
52
55
53
48
50
50
50
50
49

Medium Clouds (% Sky Obscured)

45
50
45
35
30
30
30
35
40
45
55
55
60
60
65
60
60
60
55

High Clouds (% Sky Obscured)

76
79
82
85
84
84
77
73
68
58
64
70
78
80
89
91
86
81
52

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

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

Precipitation Probability (%)

68
77
81
75
76
75
79
79
78
78
78
76
70
65
58
47
45
36
13

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

13
13
7
9
9
10
10
10
8
8
8
8
7
8
5
6
6
6
7

Dew Point (°C)

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

Relative Humidity (%)

64
73
73
73
75
77
83
85
88
91
93
93
94
94
78
66
55
48
42

Pressure (mb)

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

Ozone (du)

302
302
302
302
302
302
302
302
302
301
301
301
301
301
302
302
303
303
303

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

Generated: 18/09/25 19:07:52. Forecast: 18/09/25 to 24/09/25. Timezone: UTC+2.00