Clear Outside v1.0 - International Weather Forecasts For Astronomers

Monday 18

Waxing Crescent 11%

07:12

00:34

19 Bad
20 Bad
21 Bad
22 Bad
23 Good
00 OK
01 OK
02 OK
03 OK
04 OK
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: 05:38, Set: 21:32, Transit: 13:36. Moon - Rise: 07:12, Set: 00:34. Civil Dark: 22:15 - 04:55. Nautical Dark: 23:16 - 03:53. Astro Dark: 01:11 - N/A

Total Clouds (% Sky Obscured)

94
85
76
74
12
15
19
24
27
29
63
51
87
76
94
98
100
98
97
100
100
100
100
98

Low Clouds (% Sky Obscured)

60
46
31
0
10
14
19
22
22
24
28
28
11
0
15
58
55
63
64
69
56
75
100
97

Medium Clouds (% Sky Obscured)

26
3
7
2
0
0
0
0
4
4
28
25
83
76
94
98
96
97
96
100
94
99
71
91

High Clouds (% Sky Obscured)

0
4
0
30
4
1
0
1
1
5
25
9
33
15
17
17
96
58
15
90
90
2
14
10

ISS Passover

Visibility (miles)

8
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
Very Light Rain
None
None
None
Very Light Rain

Precipitation Probability (%)

41
14
2
0
0
0
0
0
0
0
0
0
0
0
0
0
11
25
43
55
46
37
42
55

Precipitation Amount (mm)

0
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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

10
9
9
8
7
7
7
7
6
6
6
6
6
7
8
9
9
9
10
11
11
11
11
11

Relative Humidity (%)

75
77
83
85
87
88
91
93
93
93
94
96
93
88
83
77
73
68
74
83
86
90
87
89

Pressure (mb)

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

Ozone (du)

407
393
386
387
386
384
381
377
373
370
369
369
368
369
371
371
374
381
384
384
377
376
376
374

Tuesday 19

Waxing Crescent 21%

08:34

01:28

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: 05:37, Set: 21:33, Transit: 13:36. Moon - Rise: 08:34, Set: 01:28. Civil Dark: 22:17 - 04:53. Nautical Dark: 23:18 - 03:51. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

99
95
94
99
79
92
82
95
83
76
88
100
96
95
98
99
100
94
96
100
97
66
75
75

Low Clouds (% Sky Obscured)

72
71
62
57
59
58
53
53
50
46
63
74
56
57
70
83
89
94
96
100
83
52
46
58

Medium Clouds (% Sky Obscured)

96
87
88
97
43
58
79
77
79
18
32
70
55
85
92
97
86
47
51
71
70
26
42
40

High Clouds (% Sky Obscured)

4
10
15
9
4
1
1
5
0
76
88
100
96
0
0
0
1
0
0
0
0
0
0
5

ISS Passover

Visibility (miles)

9
9
9
9
9
6
9
9
9
9
9
9
9
9
9
9
9
9
5
4
6
8
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
Light Rain
Light Rain
Very Light Rain
None
None
None

Precipitation Probability (%)

24
3
14
23
32
15
3
1
0
0
1
5
21
24
25
51
50
53
71
68
51
30
12
25

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

90
87
87
90
92
93
95
96
98
96
95
95
93
90
82
75
86
83
82
83
86
80
64
64

Pressure (mb)

1015
1015
1015
1015
1015
1015
1015
1015
1015
1015
1016
1017
1017
1018
1018
1019
1019
1019
1020
1020
1021
1021
1021
1021

Ozone (du)

373
372
372
378
375
379
383
380
379
379
382
386
385
384
384
383
378
376
374
374
373
371
366
362

Wednesday 20

Waxing Crescent 31%

10:03

02:03

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: 05:35, Set: 21:35, Transit: 13:36. Moon - Rise: 10:03, Set: 02:03. Civil Dark: 22:18 - 04:51. Nautical Dark: 23:20 - 03:49. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

72
90
93
87
87
58
59
100
100
94
92
92
82
100
100
99
99
87
83
71
62
69
82
76

Low Clouds (% Sky Obscured)

56
56
56
54
40
35
0
10
21
32
39
42
44
49
49
45
43
61
57
49
40
28
19
9

Medium Clouds (% Sky Obscured)

43
59
64
58
57
27
10
8
1
62
59
54
51
49
68
89
38
34
28
30
31
37
37
36

High Clouds (% Sky Obscured)

5
3
22
21
5
11
48
100
100
69
36
7
5
100
100
91
97
23
20
8
4
12
40
65

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 (%)

22
12
1
0
12
4
1
0
0
0
0
0
0
0
8
19
2
1
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
12
11
9
9
9
9
8
8
8
7
7
7
8
9
8
8
9
10
11
10
10
9
8

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

76
82
87
92
93
95
95
95
96
96
98
96
96
90
84
79
72
62
55
52
51
49
48
49

Pressure (mb)

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

Ozone (du)

357
353
348
346
344
343
343
342
342
342
341
341
341
341
340
339
337
336
336
336
335
336
335
335

Thursday 21

Waxing Crescent 28%

11:32

02:26

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
08 OK
09 Good
10 Good
11 OK
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad
17 Bad
18 Bad

Sun - Rise: 05:34, Set: 21:36, Transit: 13:36. Moon - Rise: 11:32, Set: 02:26. Civil Dark: 22:20 - 04:50. Nautical Dark: 23:23 - 03:46. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

74
53
52
92
95
97
99
90
81
80
71
56
39
29
17
6
30
53
77
76
79
78
76
75

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
8
16
23
18
12
7
4
2

Medium Clouds (% Sky Obscured)

27
18
9
0
0
0
0
7
14
23
27
26
27
19
10
2
15
29
38
49
57
60
53
45

High Clouds (% Sky Obscured)

72
30
14
92
95
97
98
83
74
63
42
21
0
1
3
4
22
39
57
71
79
78
76
75

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)

5
3
2
1
1
2
3
3
4
4
4
4
5
5
5
6
6
6
7
7
7
6
6
5

Chance of Frost

Temperature (°C)

20
19
17
16
15
14
14
13
13
13
12
13
14
15
18
20
22
23
24
25
25
25
25
25

Feels Like (°C)

19
19
18
17
14
13
13
12
12
12
11
11
13
16
18
20
23
25
25
26
26
26
26
26

Dew Point (°C)

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

Relative Humidity (%)

57
65
70
73
70
70
69
69
70
71
72
74
76
74
70
66
62
57
52
50
48
48
49
51

Pressure (mb)

1027
1027
1027
1028
1028
1028
1028
1028
1028
1028
1028
1028
1028
1028
1028
1028
1028
1028
1027
1027
1027
1026
1026
1026

Ozone (du)

333
333
332
333
334
334
333
332
331
330
330
331
332
333
338
342
342
340
338
337
336
334
333
332

Friday 22

Waxing Crescent 42%

12:55

02:42

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: 05:33, Set: 21:37, Transit: 13:36. Moon - Rise: 12:55, Set: 02:42. Civil Dark: 22:22 - 04:48. Nautical Dark: 23:25 - 03:44. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

89
82
100
100
89
74
60
58
55
56
71
86
100
100
99
99
97
94
92
94
95
96
89
83

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
9
18
26
17
8
0
7
13
20
12
6

Medium Clouds (% Sky Obscured)

38
25
13
0
0
0
0
0
0
0
15
27
37
17
19
15
19
28
31
36
32
33
20
9

High Clouds (% Sky Obscured)

89
82
100
100
86
72
58
56
55
56
69
85
100
100
99
98
90
82
73
80
87
93
81
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
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
7
6
7

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

Chance of Frost

Temperature (°C)

24
23
21
19
18
17
16
16
16
15
15
15
17
18
20
22
24
25
26
27
27
27
27
25

Feels Like (°C)

26
24
21
19
17
15
15
16
15
15
15
15
17
19
19
20
21
21
22
23
29
28
28
27

Dew Point (°C)

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

Relative Humidity (%)

58
67
73
73
73
74
77
77
78
79
80
80
79
74
68
63
58
54
50
46
47
46
46
52

Pressure (mb)

1025
1025
1025
1025
1025
1025
1025
1025
1024
1024
1024
1024
1024
1024
1024
1024
1024
1024
1024
1024
1024
1024
1024
1024

Ozone (du)

333
333
332
332
332
333
333
332
332
331
329
328
328
327
326
326
325
326
326
327
328
329
330
331

Saturday 23

First Quarter 53%

14:15

02:55

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

Sun - Rise: 05:32, Set: 21:39, Transit: 13:36. Moon - Rise: 14:15, Set: 02:55. Civil Dark: 22:23 - 04:47. Nautical Dark: 23:27 - 03:42. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

79
76
70
64
77
81
85
64
36
32
31
31
33
37
38
41
40
34
30
27
23
21
15
8

Low Clouds (% Sky Obscured)

0
3
8
12
14
15
17
16
15
14
8
8
8
6
3
3
3
3
2
2
1
0
0
0

Medium Clouds (% Sky Obscured)

1
5
11
12
12
13
23
21
22
25
26
24
22
24
26
28
22
19
13
15
15
15
9
4

High Clouds (% Sky Obscured)

79
52
25
0
25
50
75
55
36
32
31
17
0
1
1
1
2
2
2
2
1
1
1
1

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
9
17
4
9
24
12
9
19
30
23
7
4
13
8
0
0
1
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
11
10
9
8
7
6
6
5
5
5
5
6
6
6
6
7
7
7
8
8
9
11
10

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

27
28
22
21
20
20
20
19
15
15
15
15
14
14
19
19
19
20
21
22
27
27
26
27

Dew Point (°C)

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

Relative Humidity (%)

58
66
70
75
78
79
80
80
83
83
86
83
80
77
71
66
60
55
50
44
44
42
42
46

Pressure (mb)

1024
1025
1025
1026
1026
1026
1026
1027
1027
1027
1027
1027
1028
1028
1028
1029
1029
1029
1029
1029
1029
1029
1029
1029

Ozone (du)

333
335
333
331
329
328
326
324
323
323
322
322
321
321
320
320
319
319
318
317
317
316
316
315

Sunday 24

Waxing Gibbous 64%

15:31

03:06

19 Good
20 Good
21 OK
22 OK
23 OK
00 OK
01 OK
02 OK
03 Good
04 Good
05 Good
06 Good
07 Good
08 Good
09 Good
10 Good
11 Good
12 Good
13 Good

Sun - Rise: 05:31, Set: 21:40, Transit: 13:36. Moon - Rise: 15:31, Set: 03:06. Civil Dark: 22:25 - 04:46. Nautical Dark: 23:30 - 03:40. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

2
8
14
20
25
29
32
22
12
1
1
1
1
1
0
0
0
0
0

Low Clouds (% Sky Obscured)

0
6
13
20
25
29
32
22
12
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

High Clouds (% Sky Obscured)

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

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
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

Wind Speed/Direction (mph)

10
11
10
10
10
9
8
8
7
7
6
7
7
7
7
7
8
8
8

Chance of Frost

Temperature (°C)

22
21
19
17
15
15
15
14
14
13
13
14
15
16
18
20
21
23
24

Feels Like (°C)

26
26
19
19
19
18
18
17
14
14
15
14
14
14
19
20
20
20
21

Dew Point (°C)

12
12
12
12
12
12
12
12
11
11
11
12
12
13
13
12
12
12
12

Relative Humidity (%)

52
58
64
71
79
82
83
84
86
87
89
86
82
78
70
61
54
51
47

Pressure (mb)

1029
1029
1030
1030
1030
1030
1031
1031
1031
1031
1031
1031
1031
1031
1031
1031
1031
1030
1030

Ozone (du)

315
314
314
314
314
314
314
315
315
315
316
315
315
315
315
316
317
317
317

Forecast for Utrecht, Gemeente Utrecht, Netherlands (52.09,5.12)

Generated: 18/05/26 19:52:33. Forecast: 18/05/26 to 24/05/26. Timezone: UTC+2.00