Clear Outside v1.0 - International Weather Forecasts For Astronomers

Thursday 10

Full Moon 100%

20:59

05:04

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

Sun - Rise: 05:41, Set: 20:31, Transit: 13:06. Moon - Rise: 20:59, Set: 05:04. Civil Dark: 21:03 - 05:09. Nautical Dark: 21:43 - 04:28. Astro Dark: 22:29 - 03:42

Total Clouds (% Sky Obscured)

78
83
87
100
100
100
96
98
45
9
1
75
75
79
77
28
100
76
58
11
3
3
0
0

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)

78
83
49
51
48
98
57
82
21
9
1
65
75
79
60
24
90
76
58
11
3
3
0
0

High Clouds (% Sky Obscured)

78
83
87
100
100
100
94
98
45
0
0
3
23
3
70
1
100
30
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
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
1
2
2
6
11
10
16
8
9
28
12
0
15
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
9
12
15
11
12
10
9
12
13
18
16
12
15
18
20
18
18
15
8
4
5
7
7

Chance of Frost

Temperature (°C)

23
26
25
23
24
23
22
24
27
31
32
34
34
35
36
35
33
29
24
25
23
20
19
19

Feels Like (°C)

20
20
20
18
19
18
18
20
23
26
29
30
29
29
30
27
30
23
21
24
24
20
18
18

Dew Point (°C)

-1
2
5
5
4
5
5
6
5
3
2
0
-2
-2
-2
-2
2
6
10
9
11
9
9
9

Relative Humidity (%)

20
21
27
31
27
30
31
31
25
17
14
11
9
9
9
9
14
23
41
36
48
46
50
53

Pressure (mb)

1011
1011
1011
1011
1010
1010
1011
1010
1010
1009
1009
1008
1007
1005
1005
1005
1007
1008
1011
1011
1012
1012
1013
1013

Ozone (du)

291
289
290
292
292
294
299
299
299
300
302
303
306
306
308
308
308
309
315
316
315
315
317
318

Friday 11

Waning Gibbous 100%

21:36

06:10

00 Good
01 Good
02 Good
03 Good
04 Good
05 Good
06 Good
07 Good
08 Good
09 Good
10 Good
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

Sun - Rise: 05:42, Set: 20:30, Transit: 13:06. Moon - Rise: 21:36, Set: 06:10. Civil Dark: 21:02 - 05:10. Nautical Dark: 21:42 - 04:29. Astro Dark: 22:29 - 03:43

Total Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
5
0
0
28
34
61
99
100
98
100
100
100
100
100
100
95

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
22
16
15
23
26
46
32
36
69
71
38
48
55

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
5
0
0
28
10
31
49
69
60
79
22
40
64
68
25
5

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
28
34
61
70
80
86
100
100
100
100
100
100
59

ISS Passover

Visibility (miles)

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

Precipitation Probability (%)

0
0
0
0
0
0
0
0
0
0
4
21
42
33
52
61
95
95
95
95
75
40
10
9

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.6
4.6
0.5
1.7
0.3
0
0
0

Wind Speed/Direction (mph)

7
5
4
3
3
2
2
1
0
2
7
11
10
10
11
10
10
13
14
12
2
5
4
4

Chance of Frost

Temperature (°C)

19
19
18
17
16
16
16
20
23
25
26
28
30
30
31
30
30
26
16
16
15
16
15
15

Feels Like (°C)

17
17
17
16
15
15
15
20
24
24
26
26
27
28
28
26
27
22
13
13
15
15
15
13

Dew Point (°C)

8
7
5
4
3
2
3
4
4
5
6
6
6
6
6
6
6
9
14
14
13
13
13
13

Relative Humidity (%)

49
45
41
40
41
40
41
35
28
27
26
23
22
21
20
21
22
34
87
87
89
85
90
90

Pressure (mb)

1013
1013
1012
1012
1012
1013
1013
1014
1014
1014
1014
1014
1013
1013
1012
1012
1012
1014
1017
1019
1020
1020
1020
1021

Ozone (du)

316
315
314
314
314
313
313
314
313
310
309
308
307
307
305
306
303
300
301
301
301
299
298
300

Saturday 12

Waning Gibbous 98%

22:07

07:20

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
19 Bad
20 Bad
21 Bad
22 OK
23 Good

Sun - Rise: 05:42, Set: 20:30, Transit: 13:06. Moon - Rise: 22:07, Set: 07:20. Civil Dark: 21:01 - 05:11. Nautical Dark: 21:42 - 04:30. Astro Dark: 22:28 - 03:44

Total Clouds (% Sky Obscured)

100
100
100
91
93
93
93
84
89
85
85
100
80
84
100
100
100
100
83
71
56
51
19
13

Low Clouds (% Sky Obscured)

60
40
34
41
47
47
44
38
43
42
41
27
24
21
1
16
17
21
13
7
0
0
0
0

Medium Clouds (% Sky Obscured)

3
3
3
0
2
28
44
49
44
20
21
7
47
22
32
63
35
62
70
68
15
11
5
0

High Clouds (% Sky Obscured)

100
100
100
15
15
30
30
1
25
20
15
100
52
84
100
100
100
100
72
44
16
19
10
11

ISS Passover

Visibility (miles)

8
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
8
8
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
Light Rain
Light Rain
Light Rain
None
None
None
None
None

Precipitation Probability (%)

2
0
0
0
4
5
1
0
0
0
0
2
7
24
54
46
86
83
76
32
6
18
1
0

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.6
0.6
0.8
0
0
0
0
0

Wind Speed/Direction (mph)

4
2
3
2
3
3
3
1
3
3
4
4
5
7
7
6
9
8
6
9
7
5
6
5

Chance of Frost

Temperature (°C)

14
15
15
14
14
13
14
15
18
20
21
22
24
25
28
28
28
25
23
19
19
18
17
17

Feels Like (°C)

13
14
14
14
14
12
13
15
17
18
19
21
22
23
28
26
25
23
23
17
19
17
15
16

Dew Point (°C)

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

Relative Humidity (%)

95
87
87
87
90
93
90
82
74
66
58
53
48
41
35
34
35
44
53
75
76
73
72
66

Pressure (mb)

1021
1020
1019
1018
1019
1019
1019
1019
1018
1018
1018
1017
1016
1015
1014
1013
1013
1013
1014
1014
1015
1015
1015
1015

Ozone (du)

301
304
306
309
313
314
313
312
310
313
314
316
316
318
313
312
313
308
308
308
308
309
311
312

Sunday 13

Waning Gibbous 93%

22:33

08:31

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

Sun - Rise: 05:43, Set: 20:29, Transit: 13:06. Moon - Rise: 22:33, Set: 08:31. Civil Dark: 21:01 - 05:11. Nautical Dark: 21:41 - 04:31. Astro Dark: 22:27 - 03:46

Total Clouds (% Sky Obscured)

11
15
7
13
6
3
3
4
9
11
13
12
16
17
47
67
81
40
69
54
100
100
100
99

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
1
0
0
0
0
1
2
0
0
1
29
46
68
37
54
30
46
5
3
0

High Clouds (% Sky Obscured)

10
11
6
7
3
1
3
4
9
9
11
10
16
17
22
25
24
35
34
48
100
100
100
99

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
2
3
4
18
26
22
34
53
35
17
8
1

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
5
5
6
6
5
5
3
2
1
2
5
8
10
11
12
13
13
13
11
6
7
6
6

Chance of Frost

Temperature (°C)

16
17
16
16
16
15
15
19
23
25
27
28
30
32
32
32
32
32
31
30
26
24
21
20

Feels Like (°C)

16
16
15
15
14
14
14
19
25
25
27
27
29
30
31
30
29
28
28
26
25
20
19
18

Dew Point (°C)

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

Relative Humidity (%)

65
63
63
63
63
60
57
53
38
35
32
28
23
19
18
18
17
18
18
20
32
39
45
47

Pressure (mb)

1015
1015
1015
1015
1015
1015
1015
1015
1015
1015
1014
1014
1013
1012
1012
1011
1011
1010
1010
1011
1012
1014
1013
1014

Ozone (du)

314
315
315
314
312
311
312
311
309
306
306
305
305
304
304
306
306
306
306
305
306
305
306
308

Monday 14

Waning Gibbous 86%

22:57

09:41

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

Sun - Rise: 05:44, Set: 20:28, Transit: 13:06. Moon - Rise: 22:57, Set: 09:41. Civil Dark: 21:00 - 05:12. Nautical Dark: 21:40 - 04:32. Astro Dark: 22:26 - 03:47

Total Clouds (% Sky Obscured)

99
98
45
42
87
21
17
17
13
9
18
25
10
5
0
43
73
100
100
100
100
85
70
65

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
1
2
0
0
0
3
7
11
9
12
9
0
0
0
18
32
44
37
31
24
17
9
1

High Clouds (% Sky Obscured)

99
98
45
42
87
21
17
17
7
9
18
25
10
5
0
43
73
100
100
100
100
67
37
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
0
0
0
0
1
0
7
14
19
21
35
46
50
48
41
50
44
25
27
20
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
4
3
4
4
4
3
2
1
1
2
3
5
7
11
13
8
8
11
8
7
7
7
7

Chance of Frost

Temperature (°C)

20
20
19
19
19
19
20
22
25
27
28
29
30
31
31
32
31
29
27
25
23
21
21
21

Feels Like (°C)

18
17
17
18
18
17
19
23
26
27
28
29
29
29
29
28
31
32
33
22
22
21
20
20

Dew Point (°C)

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

Relative Humidity (%)

47
45
45
45
44
44
45
42
32
30
27
24
20
19
18
16
22
29
37
42
46
51
48
46

Pressure (mb)

1014
1014
1013
1013
1013
1013
1013
1013
1013
1012
1012
1012
1011
1010
1009
1009
1009
1009
1010
1010
1010
1010
1010
1010

Ozone (du)

308
307
307
307
307
307
307
306
305
305
304
304
305
304
303
302
302
303
304
304
304
304
304
305

Tuesday 15

Waning Gibbous 78%

23:20

10:51

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
19 Bad
20 Bad
21 Bad
22 Bad
23 Bad

Sun - Rise: 05:45, Set: 20:28, Transit: 13:06. Moon - Rise: 23:20, Set: 10:51. Civil Dark: 21:00 - 05:13. Nautical Dark: 21:39 - 04:33. Astro Dark: 22:25 - 03:48

Total Clouds (% Sky Obscured)

65
70
75
72
69
65
67
69
71
76
81
88
91
93
96
91
85
83
88
94
100
100
100
100

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
5
11
16
24
32
39
56
76
96
91
85
83
84
71
62
74
86
100

Medium Clouds (% Sky Obscured)

1
0
0
0
0
0
0
0
0
2
5
7
7
6
14
25
31
34
44
50
53
32
17
2

High Clouds (% Sky Obscured)

10
10
5
5
4
7
7
18
31
59
71
76
73
69
48
13
10
11
5
0
55
77
95
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
8
8
8

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

Precipitation Probability (%)

0
0
0
0
0
0
0
0
0
1
2
3
11
23
33
53
68
82
68
53
15
23
21
12

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.2
0.3
0.3
0
0
0
0
0

Wind Speed/Direction (mph)

6
5
5
5
4
6
8
6
6
10
11
12
13
12
12
10
8
6
5
4
4
5
5
4

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

9
8
8
7
5
4
2
5
9
12
12
12
12
13
12
12
12
12
13
13
12
14
13
13

Relative Humidity (%)

43
41
41
40
38
36
35
41
49
59
56
53
51
56
59
65
70
73
77
82
86
92
90
90

Pressure (mb)

1010
1010
1010
1010
1011
1012
1013
1015
1017
1018
1018
1018
1019
1019
1019
1019
1019
1019
1020
1020
1021
1022
1022
1023

Ozone (du)

305
307
308
309
309
309
310
308
307
306
305
304
303
303
302
302
300
299
298
297
296
295
296
297

Wednesday 16

Waning Gibbous 67%

23:44

12:02

Sun - Rise: 05:46, Set: 20:27, Transit: 13:06. Moon - Rise: 23:44, Set: 12:02. Civil Dark: 20:59 - 05:14. Nautical Dark: 21:39 - 04:34. Astro Dark: 22:23 - 03:49

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 Niwot, Boulder, United States of America (40.10,-105.17)

Generated: 10/07/25 00:12:57. Forecast: 10/07/25 to 16/07/25. Timezone: UTC-6.00