Clear Outside v1.0 - International Weather Forecasts For Astronomers

Sunday 31

Full Moon 100%

17:26

08:41

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

Sun - Rise: 07:36, Set: 17:38, Transit: 12:37. Moon - Rise: 17:26, Set: 08:41. Civil Dark: 18:05 - 07:09. Nautical Dark: 18:36 - 06:38. Astro Dark: 19:07 - 06:07

Total Clouds (% Sky Obscured)

1
1
1
1
2
1
0
0
0
0
0
2
2
2
2
21
36
80
100
95
26
83
100
49

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
3
9

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
42
48
6

High Clouds (% Sky Obscured)

1
1
1
1
1
1
0
0
0
0
0
2
1
2
2
17
27
77
100
94
16
76
100
23

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)

1
1
2
3
3
2
1
1
1
1
2
2
2
2
2
2
2
2
2
1
1
2
4
4

Chance of Frost

Temperature (°C)

24
25
26
25
23
19
18
17
17
17
17
16
15
15
15
14
14
14
14
14
16
17
19
20

Feels Like (°C)

25
26
27
26
24
21
19
19
19
19
18
18
17
16
15
16
14
14
13
13
15
16
18
19

Dew Point (°C)

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

Relative Humidity (%)

30
29
31
38
50
55
57
57
57
57
56
57
56
59
52
56
58
60
60
57
54
45
43
41

Pressure (mb)

1018
1017
1016
1016
1017
1017
1017
1017
1017
1017
1017
1017
1017
1017
1016
1016
1016
1016
1016
1016
1016
1017
1017
1017

Ozone (du)

230
228
227
225
226
226
229
230
230
231
231
230
231
232
232
234
234
234
235
238
239
239
240
240

Monday 1

Waning Gibbous 98%

18:15

09:32

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: 07:37, Set: 17:38, Transit: 12:37. Moon - Rise: 18:15, Set: 09:32. Civil Dark: 18:05 - 07:09. Nautical Dark: 18:36 - 06:38. Astro Dark: 19:06 - 06:08

Total Clouds (% Sky Obscured)

84
85
100
100
100
100
100
100
100
100
100
100
100
100
100
99
70
100
100
100
100
92
93
92

Low Clouds (% Sky Obscured)

10
15
2
7
16
13
18
20
17
18
21
27
27
15
18
26
32
97
100
100
100
88
91
86

Medium Clouds (% Sky Obscured)

54
69
100
100
100
95
99
66
91
60
100
100
87
97
100
98
41
58
65
70
58
48
39
36

High Clouds (% Sky Obscured)

84
85
100
100
100
100
100
100
100
100
100
100
100
100
100
81
70
72
64
64
3
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
6
9
9
9
9
9

Fog (%)

0
0
0
0
0
0
0
1
1
79
4
9
100
100
100
92
95
95
92
93
18
6
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 (%)

0
0
0
0
0
0
0
0
0
5
4
1
0
1
3
10
18
42
40
33
25
38
43
57

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)

5
7
5
4
5
4
3
4
3
3
1
2
1
2
2
3
2
3
2
1
2
1
2
4

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

38
39
42
49
57
63
67
71
79
82
80
83
84
87
87
86
87
90
89
87
86
82
82
81

Pressure (mb)

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

Ozone (du)

241
241
241
241
242
243
244
245
246
246
247
250
250
252
252
252
254
255
258
260
261
261
261
260

Tuesday 2

Waning Gibbous 94%

19:08

10:17

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: 07:37, Set: 17:38, Transit: 12:37. Moon - Rise: 19:08, Set: 10:17. Civil Dark: 18:05 - 07:10. Nautical Dark: 18:36 - 06:39. Astro Dark: 19:06 - 06:08

Total Clouds (% Sky Obscured)

88
93
93
95
97
100
100
100
100
100
97
99
92
100
100
100
100
100
100
100
100
100
99
98

Low Clouds (% Sky Obscured)

76
88
89
93
94
96
95
100
100
91
85
84
73
65
62
64
53
78
87
79
69
59
85
81

Medium Clouds (% Sky Obscured)

33
30
27
22
40
45
40
40
30
30
26
32
90
98
98
94
93
100
92
93
93
94
95
83

High Clouds (% Sky Obscured)

0
0
0
5
7
25
20
15
20
25
34
35
29
46
93
100
100
100
100
99
98
97
69
44

ISS Passover

Visibility (miles)

9
5
4
7
7
7
7
8
9
9
9
9
9
9
9
9
9
9
9
9
9
7
6
1

Fog (%)

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

Precipitation Type

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

Precipitation Probability (%)

58
64
59
40
44
42
41
36
17
27
26
22
23
24
29
27
35
47
52
61
77
85
95
95

Precipitation Amount (mm)

0.3
0.4
0.4
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.2
0.4
0.5
1
2.4

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

12
12
12
12
12
12
12
12
11
11
11
11
11
11
11
11
11
10
10
11
11
10
11
12

Relative Humidity (%)

77
74
75
82
84
84
86
86
86
84
86
87
89
89
90
89
87
87
89
89
89
83
83
93

Pressure (mb)

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

Ozone (du)

262
262
263
265
266
267
267
268
267
268
269
269
271
272
276
278
280
284
285
285
288
289
289
285

Wednesday 3

Waning Gibbous 88%

20:06

10:57

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: 07:38, Set: 17:37, Transit: 12:37. Moon - Rise: 20:06, Set: 10:57. Civil Dark: 18:05 - 07:10. Nautical Dark: 18:36 - 06:39. Astro Dark: 19:06 - 06:09

Total Clouds (% Sky Obscured)

98
98
99
100
92
84
78
75
72
69
73
75
79
75
74
71
63
58
55
60
64
68
65
65

Low Clouds (% Sky Obscured)

79
77
71
69
71
74
77
75
72
69
73
75
79
75
74
61
58
58
55
60
64
65
65
65

Medium Clouds (% Sky Obscured)

94
90
98
99
90
78
65
55
49
40
40
40
40
45
45
55
36
26
47
54
62
49
19
36

High Clouds (% Sky Obscured)

13
10
13
5
5
10
10
10
15
15
15
15
20
10
1
1
1
1
1
1
1
1
0
0

ISS Passover

Visibility (miles)

1
3
3
3
3
4
5
6
9
9
8
6
5
9
9
8
9
9
9
9
5
9
9
6

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

Precipitation Probability (%)

95
95
95
95
95
95
87
75
68
52
74
75
61
64
61
49
56
54
51
61
59
51
52
51

Precipitation Amount (mm)

1.7
1.3
1.2
0.9
0.9
0.7
0.5
0.5
0.4
0
0.5
0.5
0
0.3
0.3
0
0.2
0
0
0.3
0.3
0
0
0

Wind Speed/Direction (mph)

9
10
11
11
11
10
9
9
7
6
5
5
4
4
5
4
3
2
1
1
2
4
5
6

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

96
95
93
92
95
90
92
90
87
87
91
93
91
84
80
83
87
91
91
91
84
79
79
79

Pressure (mb)

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

Ozone (du)

281
279
279
280
282
283
282
282
284
285
287
289
291
291
292
291
290
293
296
299
302
302
302
301

Thursday 4

Waning Gibbous 81%

21:06

11:31

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

Sun - Rise: 07:38, Set: 17:37, Transit: 12:38. Moon - Rise: 21:06, Set: 11:31. Civil Dark: 18:05 - 07:11. Nautical Dark: 18:36 - 06:40. Astro Dark: 19:06 - 06:09

Total Clouds (% Sky Obscured)

63
57
51
43
60
49
59
62
48
40
41
38
35
29
20
15
11
10
16
12
7
0
0
0

Low Clouds (% Sky Obscured)

63
57
32
13
19
33
39
50
33
23
26
27
20
18
16
15
11
10
16
12
6
0
0
0

Medium Clouds (% Sky Obscured)

44
43
49
43
54
12
12
8
3
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)

6
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 (%)

52
35
38
31
40
31
28
20
15
19
8
8
2
6
4
1
3
2
1
1
0
0
0
0

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)

7
8
7
7
6
4
2
1
1
1
2
2
2
3
3
3
3
3
3
3
2
3
3
2

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

78
76
71
69
75
83
87
87
88
91
91
93
91
91
90
90
90
90
88
88
79
72
65
62

Pressure (mb)

1024
1024
1023
1023
1023
1024
1024
1024
1024
1024
1024
1024
1023
1023
1023
1023
1023
1023
1023
1023
1023
1022
1022
1021

Ozone (du)

298
297
295
294
294
293
289
288
287
286
285
287
286
286
283
280
278
276
275
274
273
273
272
272

Friday 5

Waning Gibbous 73%

22:06

12:01

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

Sun - Rise: 07:39, Set: 17:37, Transit: 12:38. Moon - Rise: 22:06, Set: 12:01. Civil Dark: 18:04 - 07:11. Nautical Dark: 18:35 - 06:40. Astro Dark: 19:06 - 06:10

Total Clouds (% Sky Obscured)

0
0
0
0
0
0
0
14
26
36
28
30
36
48
64
67
58
53
45
42
44
51
60
60

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
3
5
6
4
2
0
0
0
0
0
0
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
2
0
0
0
0
0
17
33
50
42
35
27
40
44
51
57
50

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
2
4
6
13
20
32
35
55
56
37
28
27
30
36
46
41
41

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)

2
2
2
2
2
1
2
3
3
3
3
3
3
3
3
3
3
3
3
3
2
2
3
3

Chance of Frost

Temperature (°C)

14
15
14
14
14
12
11
9
8
7
6
6
6
5
5
4
4
4
4
5
7
10
12
14

Feels Like (°C)

11
12
15
15
15
14
13
12
9
8
8
7
7
6
4
4
3
3
3
3
5
6
7
8

Dew Point (°C)

6
5
6
6
7
6
5
3
3
3
3
2
1
1
0
-1
-1
-2
-2
-2
-1
-1
0
1

Relative Humidity (%)

57
52
55
58
61
64
66
68
70
74
76
75
74
74
71
69
68
66
64
62
55
49
44
40

Pressure (mb)

1021
1020
1020
1019
1019
1020
1020
1021
1021
1021
1021
1020
1020
1020
1019
1019
1018
1019
1019
1019
1018
1018
1018
1017

Ozone (du)

272
272
271
270
268
269
269
269
269
270
270
269
268
266
265
265
264
263
263
263
263
263
263
263

Saturday 6

Waning Gibbous 63%

23:06

12:28

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 OK

Sun - Rise: 07:39, Set: 17:37, Transit: 12:38. Moon - Rise: 23:06, Set: 12:28. Civil Dark: 18:04 - 07:12. Nautical Dark: 18:35 - 06:41. Astro Dark: 19:06 - 06:10

Total Clouds (% Sky Obscured)

61
71
82
92
84
76
69
69
69
69
72
76
86
92
95
97
77
58
42

Low Clouds (% Sky Obscured)

0
0
0
0
8
16
21
26
30
36
38
40
42
34
26
20
27
30
39

Medium Clouds (% Sky Obscured)

44
59
74
89
75
62
48
49
57
64
66
68
68
65
68
29
22
22
19

High Clouds (% Sky Obscured)

36
43
62
85
60
35
11
10
12
11
9
11
20
67
83
95
68
41
14

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 (%)

0
0
0
0
0
0
1
9
10
6
1
0
0
0
0
0
4
4
0

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)

3
3
2
2
2
2
1
1
1
1
2
2
3
3
3
3
4
4
4

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

0
1
2
3
5
4
4
4
3
2
2
1
-1
-2
-2
-1
-2
-1
0

Relative Humidity (%)

37
35
40
46
51
54
57
60
60
59
59
56
54
51
52
53
54
54
56

Pressure (mb)

1017
1016
1016
1016
1016
1016
1017
1017
1018
1018
1018
1018
1018
1018
1018
1018
1019
1019
1020

Ozone (du)

262
262
262
262
262
263
264
265
264
263
262
261
260
259
258
257
256
255
255

Forecast for Gelukshoop, Cape Winelands District Municipality, South Africa (-33.97,20.13)

Generated: 31/05/26 13:24:50. Forecast: 31/05/26 to 06/06/26. Timezone: UTC+2.00