Mammoth Cave National Park
View of Green River Valley Looking North-Northwest •
updated 10/22/2009 8:15 PM CDT • Visual range is approximately 75 miles
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Current Ozone Conditions
as of 10/22/2009 07:00 PM CDT •
Current 1-hour average concentration |
43 ppb |
Current 8-hour average concentration |
40 ppb |
Good |
Moderate |
Unhealthy for Sensitive Groups |
Unhealthy |
Very Unhealthy |
![](https://webarchive.library.unt.edu/web/20091023013452im_/http://www.nature.nps.gov/air/global/images/transparent.gif) |
![](https://webarchive.library.unt.edu/web/20091023013452im_/http://www.nature.nps.gov/air/global/images/transparent.gif) |
![](https://webarchive.library.unt.edu/web/20091023013452im_/http://www.nature.nps.gov/air/global/images/transparent.gif) |
![](https://webarchive.library.unt.edu/web/20091023013452im_/http://www.nature.nps.gov/air/global/images/transparent.gif) |
![](https://webarchive.library.unt.edu/web/20091023013452im_/http://www.nature.nps.gov/air/global/images/transparent.gif) |
0 |
60 |
76 |
96 |
116 ppb |
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Current Particulate Conditions
as of 10/22/2009 07:00 PM CDT •  
Current 1-hour average PM2.5 concentration |
2.0 ug/m3 |
Current 24-hour average PM2.5 concentration |
8.5 ug/m3   |
Good |
Moderate |
Unhealthy for Sensitive Groups |
Unhealthy |
Very Unhealthy |
![](https://webarchive.library.unt.edu/web/20091023013452im_/http://www.nature.nps.gov/air/global/images/transparent.gif) |
![](https://webarchive.library.unt.edu/web/20091023013452im_/http://www.nature.nps.gov/air/global/images/transparent.gif) |
![](https://webarchive.library.unt.edu/web/20091023013452im_/http://www.nature.nps.gov/air/global/images/transparent.gif) |
![](https://webarchive.library.unt.edu/web/20091023013452im_/http://www.nature.nps.gov/air/global/images/transparent.gif) |
![](https://webarchive.library.unt.edu/web/20091023013452im_/http://www.nature.nps.gov/air/global/images/transparent.gif) |
0 |
15 |
40 |
65 |
150 ug/m3 |
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Current Meteorological Conditions
as of 10/22/2009 08:00 PM CDT •  
Current temperature |
unavailable |
Current relative humidity |
unavailable |
Current wind |
SE - 2 mph |
Precipitation in last hour |
0 inches |
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