Clear Outside v1.0 - International Weather Forecasts For Astronomers

Thursday 18

Waning Crescent 6%

04:13

18:52

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

Sun - Rise: 07:20, Set: 19:45, Transit: 13:32. Moon - Rise: 04:13, Set: 18:52. Civil Dark: 20:19 - 06:46. Nautical Dark: 20:59 - 06:06. Astro Dark: 21:42 - 05:24

Total Clouds (% Sky Obscured)

100
97
96
90
95
87
80
87
86
81
86
28
19
33
50
48
42
48
58
58
29
33
23
8

Low Clouds (% Sky Obscured)

86
88
79
81
90
78
77
51
31
21
23
0
8
21
30
32
33
33
31
31
6
27
17
0

Medium Clouds (% Sky Obscured)

47
44
39
41
42
36
33
32
16
10
2
0
2
2
12
2
0
4
4
3
3
3
3
0

High Clouds (% Sky Obscured)

0
0
0
0
0
1
1
70
86
73
84
24
10
20
18
16
16
19
44
38
11
10
7
5

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
1
0
2
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

17
17
18
18
19
18
18
18
18
18
18
17
15
14
14
14
13
14
14
13
13
15
18
21

Dew Point (°C)

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

Relative Humidity (%)

88
86
84
79
76
71
70
69
72
80
85
86
89
89
92
95
95
95
95
93
93
85
76
69

Pressure (mb)

1020
1019
1020
1020
1020
1020
1020
1020
1021
1021
1021
1022
1022
1022
1022
1022
1022
1022
1022
1022
1022
1022
1023
1022

Ozone (du)

259
258
258
256
255
255
254
255
255
256
256
256
256
255
256
256
257
258
257
256
257
257
257
256

Friday 19

Waning Crescent 6%

05:32

19:05

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

Sun - Rise: 07:22, Set: 19:43, Transit: 13:31. Moon - Rise: 05:32, Set: 19:05. Civil Dark: 20:17 - 06:48. Nautical Dark: 20:57 - 06:08. Astro Dark: 21:39 - 05:26

Total Clouds (% Sky Obscured)

37
48
92
62
82
100
100
93
91
75
54
47
83
40
53
39
92
47
71
87
90
97
100
100

Low Clouds (% Sky Obscured)

16
20
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

0
0
0
0
0
1
0
0
0
2
22
42
24
16
34
26
92
47
71
69
85
58
66
46

High Clouds (% Sky Obscured)

20
28
92
62
82
100
100
93
91
75
17
3
78
18
31
25
65
4
30
59
69
96
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 (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
4
1
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

64
60
55
49
48
52
58
65
69
69
65
64
66
67
68
71
71
68
66
69
73
71
65
56

Pressure (mb)

1022
1022
1021
1020
1020
1019
1018
1018
1018
1018
1017
1017
1017
1016
1016
1016
1015
1015
1014
1014
1014
1014
1014
1014

Ozone (du)

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

Saturday 20

Waning Crescent 2%

06:48

19:15

12 Bad
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

Sun - Rise: 07:24, Set: 19:40, Transit: 13:31. Moon - Rise: 06:48, Set: 19:15. Civil Dark: 20:14 - 06:50. Nautical Dark: 20:54 - 06:10. Astro Dark: 21:36 - 05:28

Total Clouds (% Sky Obscured)

100
100
100
80
92
100
95
100
100
100
100
100
100
97
97
92
100
99
87
100
100
100
100
97

Low Clouds (% Sky Obscured)

0
1
0
1
1
13
5
16
57
51
60
42
60
73
80
81
28
56
20
39
42
44
45
46

Medium Clouds (% Sky Obscured)

98
97
59
57
77
81
81
76
87
25
27
76
62
68
64
89
98
78
64
74
76
76
76
77

High Clouds (% Sky Obscured)

100
100
100
66
72
100
79
100
100
100
100
100
100
83
50
60
100
97
85
100
100
100
100
85

ISS Passover

Visibility (miles)

9
9
9
9
9
9
7
9
8
9
9
9
9
9
9
2
6
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
Light Rain
Very Light Rain
Light Rain
None
None
Light Rain
None
None
None
None
Light Rain
None
None
None
None
None
None
None
None

Precipitation Probability (%)

0
0
0
15
23
80
70
79
33
11
84
33
9
22
62
88
46
23
7
2
0
2
1
1

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

22
23
23
23
25
23
21
21
21
22
21
19
19
18
18
17
17
16
14
12
12
12
12
13

Dew Point (°C)

13
13
13
14
17
17
18
19
19
20
19
19
18
18
17
17
17
16
15
13
12
13
13
13

Relative Humidity (%)

50
47
48
52
60
61
75
86
93
93
95
95
93
92
91
89
95
93
93
87
87
89
83
81

Pressure (mb)

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

Ozone (du)

250
250
250
249
249
249
250
251
253
253
255
255
256
257
257
257
259
258
259
261
264
265
267
267

Sunday 21

New Moon 0%

08:02

19:25

12 Bad
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 OK
04 Good
05 OK
06 Bad
07 Bad
08 Bad
09 Bad
10 Bad
11 Bad

Sun - Rise: 07:25, Set: 19:38, Transit: 13:31. Moon - Rise: 08:02, Set: 19:25. Civil Dark: 20:12 - 06:51. Nautical Dark: 20:52 - 06:11. Astro Dark: 21:34 - 05:30

Total Clouds (% Sky Obscured)

94
91
94
97
100
100
100
100
100
100
100
83
66
49
33
21
10
32
50
57
76
86
73
64

Low Clouds (% Sky Obscured)

44
40
48
52
49
36
23
40
24
47
56
50
49
45
22
20
1
19
38
57
62
64
50
38

Medium Clouds (% Sky Obscured)

70
58
93
49
100
83
100
100
99
98
97
83
66
23
13
21
0
0
0
0
0
0
0
10

High Clouds (% Sky Obscured)

73
65
65
74
75
78
61
100
100
100
100
68
34
0
0
0
5
0
0
0
23
44
66
64

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
8
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
Very Light Rain

Precipitation Probability (%)

1
0
1
1
0
1
4
26
43
47
18
12
9
3
10
8
3
7
6
2
5
10
15
49

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
0.3

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

16
17
18
18
18
17
17
16
14
13
13
12
12
12
12
11
11
11
10
10
10
12
14
15

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

74
65
57
55
52
54
60
66
71
84
90
92
90
90
90
96
96
96
96
96
95
86
80
73

Pressure (mb)

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

Ozone (du)

268
268
269
271
273
274
275
277
279
278
279
280
282
284
287
286
287
287
287
289
290
292
294
294

Monday 22

Waxing Crescent 1%

09:15

19:34

12 Bad
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 Bad
08 Bad
09 Bad
10 Bad
11 Bad

Sun - Rise: 07:27, Set: 19:36, Transit: 13:30. Moon - Rise: 09:15, Set: 19:34. Civil Dark: 20:09 - 06:53. Nautical Dark: 20:49 - 06:13. Astro Dark: 21:31 - 05:32

Total Clouds (% Sky Obscured)

79
96
94
100
94
89
69
52
51
48
42
42
56
66
72
77
83
74
63
56
69
84
100
100

Low Clouds (% Sky Obscured)

36
31
35
37
55
60
47
40
40
36
31
26
26
24
27
27
29
25
15
15
7
2
0
1

Medium Clouds (% Sky Obscured)

40
69
62
63
46
51
23
24
28
25
16
29
30
37
35
34
27
17
15
13
14
17
40
35

High Clouds (% Sky Obscured)

79
96
94
100
94
67
33
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
33

ISS Passover

Visibility (miles)

7
7
6
6
3
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
Very Light Rain
Light Rain
Light Rain
Light Rain
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

58
55
79
81
63
39
18
8
6
2
3
5
1
1
4
4
2
5
5
0
9
12
10
23

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

16
17
17
17
17
16
15
14
12
12
11
11
10
10
10
10
10
10
10
10
10
11
13
14

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

67
64
61
64
68
73
75
76
81
79
79
81
83
84
84
81
81
78
74
69
65
63
60
58

Pressure (mb)

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

Ozone (du)

295
296
298
300
301
302
303
305
306
306
307
309
307
306
307
307
306
306
307
308
308
309
309
310

Tuesday 23

Waxing Crescent 3%

10:29

19:44

12 Bad
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

Sun - Rise: 07:28, Set: 19:33, Transit: 13:30. Moon - Rise: 10:29, Set: 19:44. Civil Dark: 20:07 - 06:55. Nautical Dark: 20:47 - 06:15. Astro Dark: 21:28 - 05:34

Total Clouds (% Sky Obscured)

95
94
92
92
90
93
97
100
95
90
83
86
82
81
81
71
61
52
52
47
52
62
74
71

Low Clouds (% Sky Obscured)

5
10
27
36
44
44
45
46
44
40
42
32
22
12
21
28
35
39
47
47
52
62
70
69

Medium Clouds (% Sky Obscured)

45
45
50
50
50
45
50
50
47
40
38
41
29
26
25
25
25
15
15
15
15
15
20
25

High Clouds (% Sky Obscured)

67
94
92
92
90
93
97
100
63
28
0
25
51
71
66
70
61
52
52
47
52
62
74
71

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
Very Light Rain
None
None
None
Light Rain

Precipitation Probability (%)

32
40
39
39
33
37
36
28
43
48
50
48
42
25
25
22
16
52
62
65
57
53
52
76

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

62
65
70
63
58
53
56
58
62
67
73
78
80
82
82
84
84
87
87
85
87
77
67
60

Pressure (mb)

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

Ozone (du)

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

Wednesday 24

Waxing Crescent 7%

11:44

19:55

12 Bad
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

Sun - Rise: 07:30, Set: 19:31, Transit: 13:30. Moon - Rise: 11:44, Set: 19:55. Civil Dark: 20:05 - 06:57. Nautical Dark: 20:44 - 06:17. Astro Dark: 21:26 - 05:36

Total Clouds (% Sky Obscured)

76
78
80
82
84
83
85
80
78
77
75
81
81
77
79
82
85
90
94
99

Low Clouds (% Sky Obscured)

64
58
56
57
61
61
64
67
68
73
75
81
81
77
79
81
81
84
90
96

Medium Clouds (% Sky Obscured)

35
40
55
55
55
55
45
35
35
30
30
30
30
35
35
35
35
35
40
40

High Clouds (% Sky Obscured)

76
78
80
82
84
73
51
32
47
52
45
45
31
16
11
7
12
11
10
5

ISS Passover

Visibility (miles)

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

Precipitation Type

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

Precipitation Probability (%)

90
91
89
91
95
83
72
60
68
72
69
68
69
66
72
77
81
77
79
87

Precipitation Amount (mm)

0.7
0.6
0.6
0.6
0.8
0.5
0.4
0
0.3
0.4
0.4
0.4
0.4
0.3
0.4
0.6
0.7
0.6
0.6
0.9

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

56
52
49
54
58
63
66
71
76
77
77
77
78
80
82
80
76
73
73
76

Pressure (mb)

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

Ozone (du)

304
303
303
302
301
300
300
300
300
300
299
299
298
296
295
294
294
293
293
292

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

Generated: 18/09/25 12:45:32. Forecast: 18/09/25 to 24/09/25. Timezone: UTC+2.00