Clear Outside v1.0 - International Weather Forecasts For Astronomers

Saturday 4

Waning Gibbous 85%

00:07

10:01

01 Bad
02 Bad
03 Bad
04 Bad
05 Bad
06 Bad
07 Bad
08 OK
09 OK
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
23 Bad
00 Bad

Sun - Rise: 05:26, Set: 22:01, Transit: 13:44. Moon - Rise: 00:07, Set: 10:01. Civil Dark: 22:49 - 04:38. Nautical Dark: 00:04 - 03:23. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

72
85
84
84
68
52
54
36
38
44
73
71
85
95
97
98
95
94
94
100
98
100
100
91

Low Clouds (% Sky Obscured)

17
24
28
22
5
0
0
28
33
34
73
57
63
60
72
64
57
58
60
68
68
54
43
61

Medium Clouds (% Sky Obscured)

72
69
84
70
53
41
43
21
17
22
17
37
28
34
54
66
59
56
60
66
65
62
58
56

High Clouds (% Sky Obscured)

60
6
3
3
4
3
1
3
3
3
3
5
45
47
79
88
68
13
11
61
88
100
100
72

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
11
1
0
1
0
0
0
0
1
1
0
1
1
2
1
0
0
0
1
4
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)

4
4
5
7
8
9
11
12
12
13
14
15
15
15
15
14
12
12
10
8
6
6
6
6

Chance of Frost

Temperature (°C)

12
13
13
14
14
15
15
16
18
21
22
23
23
23
23
23
23
22
22
22
21
20
19
18

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

73
66
68
66
74
74
68
66
59
50
49
51
54
54
54
54
54
55
63
70
73
77
82
81

Pressure (mb)

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

Ozone (du)

336
336
336
336
336
336
335
333
333
333
333
335
337
338
340
341
343
342
343
342
342
342
342
345

Sunday 5

Waning Gibbous 77%

00:18

11:17

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
23 Bad
00 Bad

Sun - Rise: 05:27, Set: 22:01, Transit: 13:44. Moon - Rise: 00:18, Set: 11:17. Civil Dark: 22:49 - 04:39. Nautical Dark: 00:03 - 03:25. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

89
88
92
83
93
97
93
94
99
99
100
95
90
96
97
93
96
87
98
100
100
100
100
100

Low Clouds (% Sky Obscured)

46
46
30
34
49
41
69
68
80
80
62
62
65
69
61
57
33
34
24
28
26
39
49
50

Medium Clouds (% Sky Obscured)

52
53
45
39
33
45
45
44
44
44
35
39
28
40
31
39
59
58
67
60
59
100
100
87

High Clouds (% Sky Obscured)

78
25
70
64
87
79
22
4
28
71
100
65
74
91
95
73
92
82
94
100
100
100
100
100

ISS Passover

Visibility (miles)

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

Precipitation Probability (%)

1
2
1
1
2
8
19
26
31
53
63
52
30
21
7
1
0
0
0
0
0
0
0
0

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

18
18
18
18
18
17
18
19
19
19
19
20
20
21
22
22
22
21
21
20
19
18
18
18

Feels Like (°C)

18
18
17
16
17
16
17
17
18
18
18
18
19
19
19
19
18
18
18
18
17
17
17
17

Dew Point (°C)

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

Relative Humidity (%)

81
85
81
74
79
82
78
78
80
81
84
85
80
65
62
54
52
52
54
59
67
76
78
78

Pressure (mb)

1022
1022
1022
1022
1022
1021
1021
1022
1022
1022
1022
1022
1022
1022
1022
1022
1022
1022
1021
1021
1021
1021
1021
1021

Ozone (du)

344
345
346
346
349
351
353
355
353
350
351
352
352
352
351
349
347
345
342
341
340
340
340
341

Monday 6

Waning Gibbous 67%

00:29

12:34

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
23 Bad
00 Bad

Sun - Rise: 05:27, Set: 22:00, Transit: 13:44. Moon - Rise: 00:29, Set: 12:34. Civil Dark: 22:48 - 04:40. Nautical Dark: 00:01 - 03:27. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

100
100
99
100
98
100
100
100
100
94
100
98
99
92
83
89
94
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

47
42
34
44
56
69
73
72
46
70
47
47
62
73
55
62
57
61
51
50
48
53
52
49

Medium Clouds (% Sky Obscured)

78
60
83
92
84
79
87
86
86
83
60
76
88
42
37
28
11
18
58
72
95
94
92
98

High Clouds (% Sky Obscured)

100
100
97
100
96
100
77
100
44
57
100
91
87
26
36
62
84
100
100
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
None
None
None
None
None
None

Precipitation Probability (%)

0
0
0
0
0
0
1
1
5
3
3
1
3
2
1
0
0
0
0
14
21
26
35
34

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
6
6
6
6
6
6
8
9
10
13
14
14
15
15
15
14
12
10
7
5
4
4
4

Chance of Frost

Temperature (°C)

18
18
17
17
17
17
18
19
20
21
21
21
22
22
22
23
23
22
22
21
20
19
19
18

Feels Like (°C)

17
17
17
16
16
16
17
18
19
18
19
18
19
19
19
19
20
20
20
20
20
19
18
18

Dew Point (°C)

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

Relative Humidity (%)

82
86
89
90
90
89
85
78
70
62
56
54
51
54
50
49
51
53
55
57
64
67
70
72

Pressure (mb)

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

Ozone (du)

341
340
339
337
335
333
333
336
338
338
339
337
335
334
333
331
332
333
333
333
334
333
332
332

Tuesday 7

Third Quarter 57%

00:41

13:53

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
23 Bad
00 Bad

Sun - Rise: 05:28, Set: 22:00, Transit: 13:44. Moon - Rise: 00:41, Set: 13:53. Civil Dark: 22:47 - 04:41. Nautical Dark: 00:00 - 03:28. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

100
100
100
99
99
99
99
100
100
100
100
100
100
100
100
100
100
99
99
95
92
86
84
81

Low Clouds (% Sky Obscured)

45
46
51
48
54
59
70
70
86
94
95
94
98
98
100
100
94
96
76
44
34
29
32
37

Medium Clouds (% Sky Obscured)

96
97
97
96
92
85
85
83
80
40
29
23
19
25
34
41
45
43
44
38
33
27
18
14

High Clouds (% Sky Obscured)

100
95
90
84
86
90
94
96
98
100
97
93
88
90
87
95
94
92
90
79
66
57
60
60

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
8
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 (%)

33
28
34
24
28
33
14
15
7
3
10
2
1
6
7
3
8
7
2
1
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)

4
4
4
5
5
7
8
9
12
13
15
16
16
17
16
15
14
14
12
12
10
8
6
6

Chance of Frost

Temperature (°C)

18
18
17
17
17
18
18
18
19
19
20
20
20
20
20
19
19
20
19
19
18
17
16
15

Feels Like (°C)

18
17
17
17
17
17
17
17
17
17
17
17
17
17
17
17
17
17
17
17
16
15
15
15

Dew Point (°C)

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

Relative Humidity (%)

74
76
78
77
79
77
74
75
70
68
57
61
60
62
63
70
75
66
73
70
74
83
92
92

Pressure (mb)

1015
1014
1014
1014
1013
1013
1013
1013
1013
1013
1013
1013
1014
1014
1014
1014
1015
1015
1015
1016
1016
1017
1017
1017

Ozone (du)

332
333
335
339
342
347
346
346
345
342
340
338
334
333
330
327
327
325
323
321
319
318
317
317

Wednesday 8

Waning Crescent 45%

00:56

15:16

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 OK
14 Bad
15 Bad
16 Bad
17 Bad
18 OK
19 OK
20 OK
21 Good
22 OK
23 OK
00 OK

Sun - Rise: 05:29, Set: 21:59, Transit: 13:44. Moon - Rise: 00:56, Set: 15:16. Civil Dark: 22:46 - 04:42. Nautical Dark: 23:58 - 03:30. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

76
74
73
69
68
70
70
62
64
65
62
51
40
53
61
64
49
36
25
21
18
20
26
25

Low Clouds (% Sky Obscured)

39
38
62
60
65
67
67
59
62
59
50
34
22
37
52
64
49
36
25
21
18
20
21
17

Medium Clouds (% Sky Obscured)

2
4
2
2
3
2
2
2
2
0
2
4
6
14
20
28
28
25
20
13
8
5
5
4

High Clouds (% Sky Obscured)

60
59
3
3
3
3
3
3
0
3
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 (%)

0
0
0
1
2
1
0
0
0
2
6
4
4
4
3
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
5
5
5
5
5
6
7
7
8
8
9
10
11
11
12
11
10
9
7
6
5
4

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

92
92
92
86
83
82
82
80
72
71
69
69
59
53
53
53
53
56
58
59
69
78
87
89

Pressure (mb)

1018
1018
1018
1018
1018
1019
1019
1019
1020
1020
1020
1020
1020
1019
1020
1020
1020
1019
1019
1019
1019
1020
1020
1020

Ozone (du)

316
317
316
317
316
317
318
320
320
319
318
316
316
316
316
315
315
316
316
317
318
319
319
319

Thursday 9

Waning Crescent 34%

00:56

16:43

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

Sun - Rise: 05:30, Set: 21:58, Transit: 13:44. Moon - Rise: 00:56, Set: 16:43. Civil Dark: 22:45 - 04:44. Nautical Dark: 23:57 - 03:32. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

25
31
35
39
31
26
17
31
46
64
67
66
59
62
56
43
27
17
9
6
4
1
2
2

Low Clouds (% Sky Obscured)

16
21
22
25
16
14
11
24
42
64
52
49
50
43
33
24
19
15
9
6
4
1
2
2

Medium Clouds (% Sky Obscured)

3
2
1
0
0
0
0
0
0
0
8
14
24
28
34
34
19
10
0
0
0
0
0
0

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
1
1
1
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 (%)

0
0
0
0
2
1
0
4
4
1
2
1
0
0
0
0
0
0
0
0
0
0
1
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)

4
4
3
3
3
3
3
4
4
4
4
5
5
6
7
9
10
10
10
11
9
8
7
7

Chance of Frost

Temperature (°C)

15
14
14
14
14
15
16
17
19
20
22
23
24
26
26
26
26
25
24
23
21
19
17
16

Feels Like (°C)

18
18
15
15
16
16
16
16
20
20
20
21
22
23
28
28
27
27
27
28
22
21
21
20

Dew Point (°C)

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

Relative Humidity (%)

89
92
92
92
95
89
83
81
69
59
51
46
42
38
38
37
36
41
46
53
62
71
82
85

Pressure (mb)

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

Ozone (du)

319
319
319
319
318
318
318
318
319
320
321
322
323
323
325
327
329
330
331
332
332
332
332
331

Friday 10

Waning Crescent 23%

01:15

18:14

Sun - Rise: 05:31, Set: 21:58, Transit: 13:44. Moon - Rise: 01:15, Set: 18:14. Civil Dark: 22:44 - 04:45. Nautical Dark: 23:55 - 03:34. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

Low Clouds (% Sky Obscured)

Medium Clouds (% Sky Obscured)

High Clouds (% Sky Obscured)

ISS Passover

Visibility (miles)

Fog (%)

Precipitation Type

Precipitation Probability (%)

Precipitation Amount (mm)

Wind Speed/Direction (mph)

Chance of Frost

Temperature (°C)

Feels Like (°C)

Dew Point (°C)

Relative Humidity (%)

Pressure (mb)

Ozone (du)

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

Generated: 04/07/26 01:27:55. Forecast: 04/07/26 to 10/07/26. Timezone: UTC+2.00