Clear Outside v1.0 - International Weather Forecasts For Astronomers

Thursday 18

Waning Crescent 6%

04:13

19:05

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

Sun - Rise: 07:20, Set: 19:43, Transit: 13:31. Moon - Rise: 04:13, Set: 19:05. Civil Dark: 20:17 - 06:46. Nautical Dark: 20:57 - 06:06. Astro Dark: 21:39 - 05:24

Total Clouds (% Sky Obscured)

69
75
52
54
53
63
75
74
66
49
33
14
7
53
88
60
100
100
100
99
100
31
69
4

Low Clouds (% Sky Obscured)

15
21
33
32
38
45
49
46
41
33
21
0
3
23
32
10
0
0
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
4
3
2
2
3
0
0
0
0
0
0
0
0
0
0
65
0

High Clouds (% Sky Obscured)

8
26
10
10
4
10
23
33
37
30
20
14
4
32
83
43
100
100
100
99
100
31
69
2

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)

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

Chance of Frost

Temperature (°C)

18
17
16
16
15
15
15
15
15
15
16
18
20
21
23
24
25
25
25
24
22
21
20
19

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

86
90
92
93
96
95
95
95
96
93
86
77
70
64
60
57
51
48
52
58
66
68
67
65

Pressure (mb)

1021
1021
1022
1022
1022
1022
1021
1022
1022
1022
1022
1022
1022
1022
1022
1021
1020
1019
1019
1018
1018
1018
1018
1018

Ozone (du)

256
256
255
255
254
254
253
250
250
251
250
250
250
251
250
249
249
250
251
252
253
254
254
254

Friday 19

Waning Crescent 2%

05:32

19:15

23 Good
00 Bad
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
19 Bad
20 Bad
21 Bad
22 Bad

Sun - Rise: 07:22, Set: 19:40, Transit: 13:31. Moon - Rise: 05:32, Set: 19:15. Civil Dark: 20:14 - 06:48. Nautical Dark: 20:54 - 06:08. Astro Dark: 21:36 - 05:26

Total Clouds (% Sky Obscured)

12
60
37
25
76
49
93
84
100
96
100
100
100
98
95
54
85
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
4
25
77
45
43
45

Medium Clouds (% Sky Obscured)

8
20
16
20
52
22
67
77
100
74
68
50
87
43
71
54
38
100
76
73
41
48
32
69

High Clouds (% Sky Obscured)

4
55
23
4
12
34
91
43
99
86
100
100
99
98
86
10
61
100
99
100
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
Very Light Rain
None
None
None
Very Light Rain
Light Rain

Precipitation Probability (%)

0
0
0
0
0
11
13
2
0
0
0
0
0
1
3
0
0
21
59
34
49
51
59
49

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.2
0
0
0
0.3
0.5

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

19
18
18
17
17
17
17
16
16
16
18
20
22
23
25
26
26
26
25
23
22
21
20
20

Feels Like (°C)

18
17
18
17
16
16
16
15
14
14
16
18
20
21
23
24
25
23
23
23
22
21
20
19

Dew Point (°C)

13
13
13
13
12
12
12
13
12
13
13
14
14
14
14
14
15
15
18
19
19
18
19
18

Relative Humidity (%)

68
70
72
73
73
73
74
79
78
78
74
68
62
54
50
46
49
51
67
79
87
85
89
89

Pressure (mb)

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

Ozone (du)

254
255
254
254
254
253
253
251
251
251
251
251
250
251
250
249
249
250
250
252
253
255
254
254

Saturday 20

Waning Crescent 0%

06:48

19:25

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
19 Bad
20 Bad
21 Bad
22 OK

Sun - Rise: 07:24, Set: 19:38, Transit: 13:31. Moon - Rise: 06:48, Set: 19:25. Civil Dark: 20:12 - 06:50. Nautical Dark: 20:52 - 06:10. Astro Dark: 21:34 - 05:28

Total Clouds (% Sky Obscured)

100
100
94
89
100
100
85
100
100
86
100
100
100
100
96
97
98
99
99
100
100
83
63
31

Low Clouds (% Sky Obscured)

80
74
85
75
54
43
28
49
35
23
31
43
36
39
39
48
57
63
53
41
28
34
32
28

Medium Clouds (% Sky Obscured)

59
13
29
39
39
30
69
32
3
3
10
18
33
40
33
87
53
97
78
55
35
51
51
2

High Clouds (% Sky Obscured)

100
100
10
15
100
100
25
100
100
79
100
100
100
89
87
84
87
87
91
96
100
83
63
3

ISS Passover

Visibility (miles)

9
4
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

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 (%)

57
38
12
1
15
3
0
0
0
0
2
0
0
0
0
1
2
2
3
3
1
3
6
2

Precipitation Amount (mm)

0.4
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)

9
10
10
11
13
12
12
11
11
12
12
13
14
15
15
16
15
14
13
10
8
7
7
7

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

19
18
18
18
15
14
13
12
11
11
11
12
13
13
13
13
13
12
13
12
12
11
10
10

Dew Point (°C)

17
18
18
17
15
14
14
13
12
12
11
11
10
8
8
8
8
8
8
9
8
8
6
6

Relative Humidity (%)

86
93
95
89
82
85
90
90
90
89
82
75
67
55
51
52
54
55
58
63
64
67
61
64

Pressure (mb)

1009
1009
1009
1009
1009
1009
1010
1010
1010
1011
1011
1011
1012
1012
1012
1012
1012
1012
1013
1013
1013
1014
1014
1015

Ozone (du)

255
256
259
260
260
263
265
265
265
266
268
269
271
273
272
272
272
273
274
275
277
279
281
286

Sunday 21

New Moon 1%

08:02

19:34

23 OK
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 OK
17 OK
18 OK
19 OK
20 OK
21 Good
22 Good

Sun - Rise: 07:25, Set: 19:36, Transit: 13:30. Moon - Rise: 08:02, Set: 19:34. Civil Dark: 20:09 - 06:51. Nautical Dark: 20:49 - 06:11. Astro Dark: 21:31 - 05:30

Total Clouds (% Sky Obscured)

29
27
33
37
49
55
60
68
75
76
77
79
80
79
71
53
41
33
33
32
34
23
13
3

Low Clouds (% Sky Obscured)

26
24
30
31
49
55
60
56
64
67
70
68
63
59
51
41
34
27
25
26
24
18
10
1

Medium Clouds (% Sky Obscured)

1
1
1
1
0
0
3
6
9
12
14
16
22
29
33
28
21
15
16
16
15
9
5
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)

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 (%)

8
8
6
18
19
15
6
15
4
11
15
19
24
17
13
18
20
19
14
8
1
1
1
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

Wind Speed/Direction (mph)

6
5
5
4
4
4
4
4
4
5
5
7
8
7
7
8
9
10
10
9
8
7
6
5

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

73
75
78
83
85
77
75
76
78
74
67
61
59
54
49
41
42
47
53
59
65
70
69
68

Pressure (mb)

1015
1015
1016
1016
1016
1017
1017
1017
1018
1018
1019
1020
1020
1021
1021
1021
1021
1021
1021
1022
1022
1022
1023
1023

Ozone (du)

287
287
289
290
292
293
294
293
295
298
302
305
306
308
310
310
312
313
313
312
308
306
304
303

Monday 22

Waxing Crescent 3%

09:15

19:44

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

Sun - Rise: 07:27, Set: 19:33, Transit: 13:30. Moon - Rise: 09:15, Set: 19:44. Civil Dark: 20:07 - 06:53. Nautical Dark: 20:47 - 06:13. Astro Dark: 21:28 - 05:32

Total Clouds (% Sky Obscured)

5
5
10
30
50
48
27
20
13
60
80
98
97
96
94
95
96
97
95
95
94
95
95
95

Low Clouds (% Sky Obscured)

4
5
10
27
47
48
23
15
8
5
9
14
13
20
29
55
63
74
64
58
46
41
29
18

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
2
3
4
14
21
20
15
10
20
20
25
25
25
25
20
14
13
8

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
1
29
57
81
76
75
60
64
65
73
62
51
35

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
1
1
3
14
18
20
24
28
33
36
36
30
35
32
21
35
39
40

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

Chance of Frost

Temperature (°C)

9
9
8
8
9
10
9
8
8
8
10
11
13
14
15
16
16
15
15
14
13
11
11
10

Feels Like (°C)

9
8
8
7
7
8
7
8
7
8
8
9
9
9
9
9
15
14
13
14
13
14
8
8

Dew Point (°C)

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

Relative Humidity (%)

69
69
71
74
70
66
70
77
79
78
76
73
70
65
61
57
57
55
54
59
63
67
68
68

Pressure (mb)

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

Ozone (du)

302
301
300
300
299
299
300
301
302
303
303
303
303
304
306
307
309
312
314
312
311
309
309
309

Tuesday 23

Waxing Crescent 7%

10:29

19:55

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
19 Bad
20 Bad
21 Bad
22 Bad

Sun - Rise: 07:28, Set: 19:31, Transit: 13:30. Moon - Rise: 10:29, Set: 19:55. Civil Dark: 20:05 - 06:55. Nautical Dark: 20:44 - 06:15. Astro Dark: 21:26 - 05:34

Total Clouds (% Sky Obscured)

92
88
84
77
56
50
50
45
45
46
46
52
61
66
76
76
81
86
86
87
87
83
74
74

Low Clouds (% Sky Obscured)

14
11
6
10
16
21
24
27
30
31
28
21
17
13
13
14
23
40
52
60
68
75
74
74

Medium Clouds (% Sky Obscured)

9
5
10
15
20
25
30
30
35
30
35
40
45
50
55
65
65
65
65
60
45
40
40
40

High Clouds (% Sky Obscured)

47
65
84
77
56
50
50
45
45
46
46
52
61
66
76
76
81
86
75
56
36
53
65
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
Very Light Rain
None
None
None
None
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
None
Very Light Rain
Light Rain
Light Rain

Precipitation Probability (%)

41
37
24
23
21
16
47
57
58
52
48
49
75
91
95
95
95
95
95
78
60
68
72
69

Precipitation Amount (mm)

0
0
0
0
0
0
0
0.2
0
0
0
0
0.4
0.6
0.8
0.7
0.9
1.2
0.8
0.4
0
0.3
0.4
0.4

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

69
69
70
70
70
71
73
75
77
78
68
60
54
51
47
45
46
47
49
55
62
68
75
80

Pressure (mb)

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

Ozone (du)

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

Wednesday 24

Waxing Crescent 13%

11:44

20:10

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: 07:30, Set: 19:29, Transit: 13:29. Moon - Rise: 11:44, Set: 20:10. Civil Dark: 20:02 - 06:57. Nautical Dark: 20:42 - 06:17. Astro Dark: 21:23 - 05:36

Total Clouds (% Sky Obscured)

82
87
90
84
79
73
75
82
89
86
86
87
86
83
81

Low Clouds (% Sky Obscured)

82
87
90
84
76
69
66
66
67
77
76
71
62
57
51

Medium Clouds (% Sky Obscured)

40
40
45
50
50
55
55
60
55
55
60
55
55
50
40

High Clouds (% Sky Obscured)

81
62
57
48
58
67
75
82
89
86
83
76
77
69
68

ISS Passover

Visibility (miles)

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

Precipitation Type

Light Rain
Light Rain
Very 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
None

Precipitation Probability (%)

68
69
66
72
77
81
77
79
86
80
74
66
62
53
41

Precipitation Amount (mm)

0.4
0.4
0.3
0.4
0.6
0.7
0.6
0.6
0.9
0.7
0.5
0.4
0.4
0.2
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

84
83
81
80
84
88
93
93
91
90
77
66
56
48
42

Pressure (mb)

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

Ozone (du)

302
302
302
302
302
301
300
301
301
302
302
303
303
303
304

Forecast for Amersfoort, Gemeente Amersfoort, Netherlands (52.16,5.39)

Generated: 18/09/25 22:07:38. Forecast: 18/09/25 to 24/09/25. Timezone: UTC+2.00