Air Quality

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8/19/2008
I checked the air quality rating on a site specifically for health, air, water... and the rating was a lot higher. I was just wondering why the low air quality rating on this site? Why the difference? I have asthma and would like to hear about this matter from someone that lives here. What would the low rating be from... pollen, polution...?
Thanks.
Abhd | Evergreen, CO