Clear Outside v1.0 - International Weather Forecasts For Astronomers

Tuesday 22

Waxing Gibbous 87%

17:07

03:30

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

Sun - Rise: 06:49, Set: 18:56, Transit: 12:53. Moon - Rise: 17:07, Set: 03:30. Civil Dark: 19:23 - 06:22. Nautical Dark: 19:55 - 05:50. Astro Dark: 20:27 - 05:18

Total Clouds (% Sky Obscured)

45
52
24
18
3
9
22
31
25
37
50
33
97
75
100
100
100
100
84
99
100
100
97
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
3
5
0
3
9
22
31
25
37
49
33
58
72
78
98
73
96
67
54
28
100
65
71

High Clouds (% Sky Obscured)

2
2
0
0
0
0
2
10
2
8
2
10
55
58
100
99
100
100
77
92
100
93
93
98

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
1
8
25
19
23
34
39
25
20
10
7
6
1
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)

9
7
6
5
3
2
2
2
4
6
8
4
2
4
11
8
8
7
5
4
2
2
3
5

Chance of Frost

Temperature (°C)

12
12
12
12
15
18
19
21
22
23
24
23
23
23
20
18
17
17
18
18
17
17
17
16

Feels Like (°C)

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

Dew Point (°C)

6
7
7
5
4
4
4
5
5
4
2
-1
-1
4
4
4
5
5
6
7
9
7
7
6

Relative Humidity (%)

67
73
71
62
48
39
35
33
31
27
23
20
20
28
34
38
43
45
46
50
57
52
51
50

Pressure (mb)

1018
1018
1018
1018
1018
1017
1017
1016
1015
1014
1013
1012
1012
1012
1013
1014
1015
1016
1015
1015
1015
1014
1014
1014

Ozone (du)

266
264
264
265
266
268
268
267
267
267
267
268
269
268
267
268
268
268
268
267
266
266
265
265

Wednesday 23

Waxing Gibbous 93%

17:33

No Set

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
01 Bad
02 Bad
03 Bad

Sun - Rise: 06:50, Set: 18:55, Transit: 12:52. Moon - Rise: 17:33, Set: No Set. Civil Dark: 19:22 - 06:23. Nautical Dark: 19:53 - 05:51. Astro Dark: 20:25 - 05:19

Total Clouds (% Sky Obscured)

98
100
100
100
100
100
97
100
100
100
100
100
100
100
100
100
100
100
100
100
97
94
95
99

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
1
1
1
0
14
15
16
5
0
4
0
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

66
100
100
100
100
100
89
99
100
100
100
100
100
100
100
100
100
100
100
100
97
94
94
97

High Clouds (% Sky Obscured)

95
100
100
100
100
100
96
94
100
94
100
100
100
100
87
73
96
89
99
78
59
66
75
92

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
5
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
2
3
14
12
7
7
13
22
34
32
22
23
27
13
6
2
3
1
1
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)

5
5
5
4
4
0
2
4
7
8
7
6
5
5
3
3
3
4
4
3
3
3
3
4

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

15
14
14
14
16
16
17
17
18
18
18
17
18
19
18
17
15
15
15
15
15
14
14
15

Dew Point (°C)

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

Relative Humidity (%)

49
50
50
50
49
44
45
41
37
36
35
38
43
45
50
60
59
61
60
61
60
58
58
59

Pressure (mb)

1014
1014
1014
1015
1016
1016
1017
1017
1017
1017
1016
1016
1016
1017
1017
1018
1018
1018
1018
1018
1018
1018
1018
1018

Ozone (du)

265
266
266
265
265
264
265
266
267
268
268
267
266
266
267
268
268
267
268
267
267
266
266
266

Thursday 24

Waxing Gibbous 98%

17:56

04:36

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
01 Bad
02 Bad
03 Bad

Sun - Rise: 06:51, Set: 18:53, Transit: 12:52. Moon - Rise: 17:56, Set: 04:36. Civil Dark: 19:20 - 06:24. Nautical Dark: 19:51 - 05:52. Astro Dark: 20:24 - 05:20

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
96
100
94
94
62
95
100
100
100
100
100
100
99
100
88
100
74
56

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
5
70
83
100
9
5
1
0
0
0
0

Medium Clouds (% Sky Obscured)

98
100
100
100
97
93
96
97
90
84
62
95
100
96
100
100
99
100
79
89
67
46
37
32

High Clouds (% Sky Obscured)

100
100
100
100
90
97
59
56
65
71
52
50
50
45
45
48
58
100
93
99
66
100
63
44

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

Precipitation Probability (%)

10
2
15
4
21
24
28
21
9
8
15
40
50
71
76
77
67
49
26
6
8
8
5
4

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0.3
0.5
0.5
0.3
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

4
2
2
3
3
2
3
3
5
6
7
7
7
7
4
6
4
4
2
1
0
0
0
0

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

8
8
9
10
9
8
7
4
3
1
1
-1
-1
0
6
9
10
9
9
8
7
7
6
6

Relative Humidity (%)

62
64
66
70
62
55
49
40
34
30
28
26
28
32
51
67
71
69
69
67
62
64
64
64

Pressure (mb)

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

Ozone (du)

266
267
267
268
269
270
269
270
270
270
271
272
272
272
272
273
273
275
275
276
276
276
276
276

Friday 25

Waxing Gibbous 100%

18:18

05:42

04 OK
05 OK
06 Bad
07 OK
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
01 OK
02 OK
03 Good

Sun - Rise: 06:52, Set: 18:51, Transit: 12:51. Moon - Rise: 18:18, Set: 05:42. Civil Dark: 19:18 - 06:25. Nautical Dark: 19:50 - 05:53. Astro Dark: 20:22 - 05:21

Total Clouds (% Sky Obscured)

42
32
49
30
49
70
84
100
100
100
100
100
100
100
100
100
100
94
57
66
79
25
18
15

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
1
1
8
17
0
0
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

27
23
16
8
0
1
1
0
3
4
7
33
61
73
71
67
64
69
38
47
34
13
0
0

High Clouds (% Sky Obscured)

26
8
30
19
47
70
84
100
99
100
100
100
100
100
100
100
100
41
28
26
50
14
18
14

ISS Passover

Visibility (miles)

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

Precipitation Probability (%)

3
1
0
0
0
0
0
0
1
3
12
50
69
68
85
66
13
18
20
16
13
9
1
2

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.5
0.4
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

0
1
0
0
0
3
2
2
3
4
7
7
2
1
6
5
3
3
4
5
5
5
4
5

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

6
5
5
6
6
4
4
3
3
2
1
1
3
8
9
11
11
9
9
9
9
8
8
7

Relative Humidity (%)

64
64
64
64
56
44
39
36
33
30
28
27
30
48
52
64
66
62
60
63
62
61
61
60

Pressure (mb)

1019
1019
1018
1019
1018
1018
1017
1016
1015
1014
1013
1012
1012
1012
1012
1013
1013
1013
1013
1013
1013
1013
1013
1013

Ozone (du)

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

Saturday 26

Full Moon 100%

18:41

06:49

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

Sun - Rise: 06:53, Set: 18:50, Transit: 12:51. Moon - Rise: 18:41, Set: 06:49. Civil Dark: 19:17 - 06:26. Nautical Dark: 19:48 - 05:54. Astro Dark: 20:20 - 05:22

Total Clouds (% Sky Obscured)

33
3
17
34
50
49
47
46
44
42
75
86
81
70
69
69
69
59
36
16
11
8
3
3

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
1
3
4
21
41
46
44
42
74
86
81
70
69
69
69
59
36
16
11
6
2
2

High Clouds (% Sky Obscured)

27
2
17
34
50
37
17
0
0
0
0
0
0
3
2
1
0
0
0
0
0
0
0
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
0
0
0
0
0
0
0
0
1
0
4
3
2
5
3
0
1
2
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)

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

Chance of Frost

Temperature (°C)

14
15
14
15
18
20
21
22
23
24
25
25
24
23
23
21
20
18
18
18
18
18
18
17

Feels Like (°C)

12
12
12
13
15
18
20
21
22
23
25
23
20
18
20
20
20
20
20
19
19
16
16
16

Dew Point (°C)

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

Relative Humidity (%)

60
60
60
58
51
36
26
21
18
16
16
16
19
25
29
33
37
42
43
43
45
44
45
45

Pressure (mb)

1014
1014
1014
1015
1015
1014
1014
1013
1013
1012
1012
1011
1012
1012
1013
1014
1015
1016
1016
1016
1017
1016
1016
1016

Ozone (du)

283
284
286
287
287
287
286
287
287
287
287
286
286
286
285
284
283
282
281
281
281
281
281
281

Sunday 27

Waning Gibbous 97%

19:06

07:59

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

Sun - Rise: 06:54, Set: 18:48, Transit: 12:51. Moon - Rise: 19:06, Set: 07:59. Civil Dark: 19:15 - 06:27. Nautical Dark: 19:46 - 05:55. Astro Dark: 20:18 - 05:23

Total Clouds (% Sky Obscured)

3
4
32
60
88
91
94
94
77
60
46
57
73
90
90
90
90
71
53
35
33
35
34
32

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)

1
0
0
0
0
0
0
0
1
3
4
18
32
44
59
69
79
56
33
9
13
17
25
32

High Clouds (% Sky Obscured)

2
4
30
58
83
85
88
90
75
59
45
46
48
49
48
45
45
43
42
35
33
35
34
32

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
1
4
3
1
3
3
1
5
6
6
5

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
4
3
3
2
2
1
3
6
7
8
9
10
10
9
5
7
8
8
8
10
7
3
3

Chance of Frost

Temperature (°C)

17
17
16
16
17
18
19
20
22
26
28
29
28
26
25
23
22
20
20
19
19
19
18
18

Feels Like (°C)

16
16
15
13
12
13
13
13
13
24
24
24
25
23
23
21
21
21
21
21
20
17
17
17

Dew Point (°C)

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

Relative Humidity (%)

45
45
45
39
35
31
26
23
20
19
18
17
18
19
20
22
26
30
31
33
35
37
39
41

Pressure (mb)

1016
1016
1017
1016
1016
1016
1016
1015
1014
1013
1012
1010
1010
1009
1009
1009
1010
1011
1011
1011
1011
1011
1011
1011

Ozone (du)

281
280
279
279
279
278
278
277
276
276
277
277
277
276
275
274
274
273
273
274
274
274
273
273

Monday 28

Waning Gibbous 91%

19:35

09:11

Sun - Rise: 06:55, Set: 18:46, Transit: 12:50. Moon - Rise: 19:35, Set: 09:11. Civil Dark: 19:13 - 06:28. Nautical Dark: 19:45 - 05:56. Astro Dark: 20:17 - 05:24

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: 22/09/26 04:52:20. Forecast: 22/09/26 to 28/09/26. Timezone: UTC-6.00