Except for those with incomplete data, every county in Tennessee flunked the American Lung Association’s evaluation of ozone levels in 2005-07. In 2008, the national ambient air quality standard for ozone got stricter, and Dr. Allen S. Lefohn of A.S.L. & Associates, under contract with the American Lung Association, re-evaluated those years’ maximum ozone level statistics with the current regulations as a yardstick, using Environmental Protection Agency Air Quality System (AQS) data.
Unhealthy for Sensitive Population
- Anderson:,30 days
- Blount:, 77 days
- Knox:,70 days
- Loudon:,60 days
- Sevier:,79 days
Unhealthy
- Anderson:,1 day
- Blount:,1 day
- Knox:,0 days
- Loudon:,1 day
- Sevier:,0 days
Very Unhealthy
- Anderson:,0 days
- Blount:, 0 days
- Knox:,1 day
- Loudon:,0 days
- Sevier:,0 days
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