Clear Outside v1.0 - International Weather Forecasts For Astronomers

Monday 20

Waxing Gibbous 100%

20:07

07:37

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

Sun - Rise: 07:30, Set: 19:47, Transit: 13:37. Moon - Rise: 20:07, Set: 07:37. Civil Dark: 20:20 - 06:57. Nautical Dark: 20:59 - 06:18. Astro Dark: 21:40 - 05:38

Total Clouds (% Sky Obscured)

43
89
46
61
88
91
51
16
13
13
79
96
18
2
84
77
0
0
77
73
97
63
82
70

Low Clouds (% Sky Obscured)

8
84
45
61
88
91
51
16
13
13
4
0
0
0
0
0
0
0
0
0
0
0
0
0

Medium 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

High Clouds (% Sky Obscured)

38
31
1
0
0
0
0
0
0
0
77
96
18
2
84
77
0
0
77
73
97
63
82
70

ISS Passover

Visibility (miles)

10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10

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

Chance of Frost

Temperature (°C)

20
19
17
16
15
14
13
13
12
11
11
10
10
9
9
8
10
12
14
16
17
19
20
20

Feels Like (°C)

20
19
17
16
15
14
13
13
12
11
11
10
9
8
8
7
9
12
14
16
17
19
20
20

Dew Point (°C)

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

Relative Humidity (%)

54
56
60
69
72
77
82
84
86
88
89
90
91
92
91
89
83
73
65
58
53
51
48
47

Pressure (mb)

1021
1022
1022
1023
1023
1024
1024
1025
1025
1026
1026
1026
1026
1027
1027
1028
1028
1029
1029
1029
1029
1029
1029
1028

Ozone (du)

288
289
290
290
289
289
290
292
290
287
286
286
286
287
287
284
283
283
282
283
283
284
283
282

Tuesday 21

Full Moon 99%

20:21

08:49

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
13 Bad
14 Bad
15 OK
16 OK

Sun - Rise: 07:32, Set: 19:45, Transit: 13:37. Moon - Rise: 20:21, Set: 08:49. Civil Dark: 20:17 - 06:59. Nautical Dark: 20:57 - 06:20. Astro Dark: 21:37 - 05:40

Total Clouds (% Sky Obscured)

71
79
90
90
91
84
88
90
94
93
95
97
98
98
98
98
95
84
85
84
80
75
41
37

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
0
0

Medium 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

High Clouds (% Sky Obscured)

71
79
90
90
91
84
88
90
94
93
95
97
98
98
98
98
95
84
85
84
80
75
41
37

ISS Passover

Visibility (miles)

10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10

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)

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

Chance of Frost

Temperature (°C)

20
19
17
15
14
13
12
11
11
11
10
9
9
8
8
8
9
12
15
17
18
20
21
21

Feels Like (°C)

20
19
17
15
14
13
12
11
11
11
10
9
9
8
7
7
9
12
15
17
18
20
21
21

Dew Point (°C)

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

Relative Humidity (%)

49
53
61
69
74
79
86
89
92
96
98
97
96
96
95
92
87
77
69
62
56
52
48
46

Pressure (mb)

1028
1028
1028
1029
1029
1029
1029
1029
1029
1029
1029
1028
1028
1028
1028
1029
1029
1029
1029
1029
1028
1028
1027
1027

Ozone (du)

282
282
283
283
282
281
280
279
279
278
277
276
275
274
274
274
274
273
273
272
272
274
274
273

Wednesday 22

Waning Gibbous 96%

20:35

10:01

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

Sun - Rise: 07:33, Set: 19:42, Transit: 13:37. Moon - Rise: 20:35, Set: 10:01. Civil Dark: 20:15 - 07:01. Nautical Dark: 20:54 - 06:22. Astro Dark: 21:35 - 05:41

Total Clouds (% Sky Obscured)

23
0
1
0
0
0
0
0
0
0
37
10
2
12
43
88
88
88
88
88
88
100
100
100

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
8
10
2
1
5
6
6
6
6
6
6
100
100
100

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
13
13
13

High Clouds (% Sky Obscured)

23
0
1
0
0
0
0
0
0
0
32
0
0
12
40
87
87
87
87
87
87
90
90
90

ISS Passover

Visibility (miles)

10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10

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)

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

Chance of Frost

Temperature (°C)

21
20
18
17
15
14
13
13
12
12
11
11
10
10
10
10
11
13
16
17
19
20
21
21

Feels Like (°C)

21
20
18
17
15
14
13
13
12
12
11
11
10
10
8
8
11
13
16
17
19
20
21
21

Dew Point (°C)

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

Relative Humidity (%)

47
51
59
68
75
79
84
87
89
92
94
95
97
96
95
94
91
84
79
75
69
62
58
59

Pressure (mb)

1026
1026
1025
1025
1025
1025
1025
1024
1024
1022
1022
1021
1021
1020
1020
1020
1020
1020
1019
1019
1018
1018
1017
1017

Ozone (du)

273
274
275
274
274
274
274
274
274
273
273
272
271
271
272
273
275
276
276
275
275
274
274
274

Thursday 23

Waning Gibbous 91%

20:50

11:11

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
13 Bad
14 OK
15 OK
16 OK

Sun - Rise: 07:35, Set: 19:40, Transit: 13:36. Moon - Rise: 20:50, Set: 11:11. Civil Dark: 20:13 - 07:02. Nautical Dark: 20:52 - 06:23. Astro Dark: 21:32 - 05:43

Total Clouds (% Sky Obscured)

100
100
100
89
89
89
89
89
89
93
93
93
93
93
93
100
100
100
100
100
100
41
41
41

Low Clouds (% Sky Obscured)

100
100
100
40
40
40
40
40
40
93
93
93
93
93
93
100
100
100
100
100
100
41
41
41

Medium Clouds (% Sky Obscured)

13
13
13
0
0
0
0
0
0
1
1
1
1
1
1
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

90
90
90
81
81
81
81
81
81
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

ISS Passover

Visibility (miles)

10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10

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
2
2
2
2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Amount (mm)

0
0.01
0.01
0.01
0.01
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

20
19
18
17
16
15
14
13
13
12
12
12
11
10
9
9
11
13
15
17
18
20
21
21

Feels Like (°C)

20
19
18
17
16
15
14
13
13
12
12
12
11
10
8
8
11
13
15
17
18
20
21
21

Dew Point (°C)

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

Relative Humidity (%)

62
67
72
78
81
84
90
94
98
100
100
99
98
97
96
96
92
81
74
65
57
50
44
42

Pressure (mb)

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

Ozone (du)

274
274
275
275
275
276
276
276
276
279
279
277
276
276
276
276
276
275
275
275
275
274
273
273

Friday 24

Waning Gibbous 84%

21:06

12:22

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

Sun - Rise: 07:37, Set: 19:38, Transit: 13:36. Moon - Rise: 21:06, Set: 12:22. Civil Dark: 20:11 - 07:04. Nautical Dark: 20:49 - 06:25. Astro Dark: 21:30 - 05:45

Total Clouds (% Sky Obscured)

41
41
41
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
73
73
73

Low Clouds (% Sky Obscured)

41
41
41
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
73
73
73

Medium 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

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)

10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10

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

Chance of Frost

Temperature (°C)

21
20
19
17
16
15
14
14
13
13
12
12
12
11
11
12
13
15
16
17
19
20
21
22

Feels Like (°C)

21
20
19
17
16
15
14
14
13
13
12
12
12
11
11
12
13
15
16
18
19
20
21
22

Dew Point (°C)

9
10
11
13
13
13
13
13
13
13
12
12
12
11
11
12
12
14
15
15
16
16
16
17

Relative Humidity (%)

45
51
63
77
83
88
95
98
99
100
100
100
100
100
100
100
96
94
91
88
84
78
74
72

Pressure (mb)

1014
1014
1014
1014
1014
1014
1014
1014
1014
1015
1014
1014
1014
1014
1014
1015
1015
1016
1016
1016
1016
1016
1015
1015

Ozone (du)

273
272
272
273
273
272
272
271
270
272
272
271
270
270
270
269
269
270
271
272
273
274
276
278

Saturday 25

Waning Gibbous 77%

21:26

13:31

17 Bad
18 Bad
19 Bad
20 Good
21 Good
22 Good
23 Good
00 Good
01 Good
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

Sun - Rise: 07:38, Set: 19:35, Transit: 13:36. Moon - Rise: 21:26, Set: 13:31. Civil Dark: 20:08 - 07:05. Nautical Dark: 20:47 - 06:27. Astro Dark: 21:27 - 05:47

Total Clouds (% Sky Obscured)

73
73
73
2
2
2
2
2
2
70
70
70
70
70
70
64
64
64
64
64
64
84
84
84

Low Clouds (% Sky Obscured)

73
73
73
2
2
2
2
2
2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
3
3
3
3
3
3
17
17
17
17
17
17
0
0
0

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
70
70
70
70
70
70
60
60
60
60
60
60
84
84
84

ISS Passover

Visibility (miles)

10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10

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
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Amount (mm)

0.01
0.01
0.01
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
7
7
7
7
7
7
7
6
6
6
6
6
6
7
8
8
9
9
9
9

Chance of Frost

Temperature (°C)

22
21
20
19
18
17
17
16
15
15
14
14
14
13
12
12
14
16
18
19
21
22
22
22

Feels Like (°C)

22
21
20
19
18
18
17
16
15
15
15
14
14
13
12
12
14
16
18
19
21
22
22
22

Dew Point (°C)

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

Relative Humidity (%)

74
78
82
85
89
94
98
99
100
100
100
100
100
100
100
100
97
93
87
82
75
70
67
68

Pressure (mb)

1015
1015
1015
1015
1015
1016
1016
1016
1016
1015
1015
1015
1015
1015
1015
1015
1015
1016
1016
1016
1016
1016
1015
1015

Ozone (du)

279
281
281
282
282
281
281
282
282
283
284
285
285
285
285
285
285
284
284
283
283
284
285
286

Sunday 26

Waning Gibbous 68%

21:50

14:38

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

Sun - Rise: 07:40, Set: 19:33, Transit: 13:35. Moon - Rise: 21:50, Set: 14:38. Civil Dark: 20:06 - 07:07. Nautical Dark: 20:45 - 06:28. Astro Dark: 21:25 - 05:49

Total Clouds (% Sky Obscured)

84
84
84
61
61
61
61
61
61
20
20
20
20
20
20
94
94
94
94
94
94
88
88
88

Low Clouds (% Sky Obscured)

0
0
0
33
33
33
33
33
33
4
4
4
4
4
4
42
42
42
42
42
42
17
17
17

Medium Clouds (% Sky Obscured)

0
0
0
25
25
25
25
25
25
5
5
5
5
5
5
10
10
10
10
10
10
86
86
86

High Clouds (% Sky Obscured)

84
84
84
40
40
40
40
40
40
13
13
13
13
13
13
90
90
90
90
90
90
0
0
0

ISS Passover

Visibility (miles)

10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10

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
1
2
2
2
1
0
0
0

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.01
0.03
0.05
0.03
0.01
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

72
76
81
84
87
91
95
98
100
100
100
100
100
100
100
98
94
89
84
76
66
57
53
51

Pressure (mb)

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

Ozone (du)

287
288
288
287
286
285
285
285
285
285
284
282
280
278
277
276
275
274
274
274
275
275
276
277

Forecast for Ghent, East Flanders, BE (51.05,3.72)

Generated: 20/09/21 17:00:29. Forecast: 20/09/21 to 26/09/21. Timezone: UTC+2.00