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Annual Ozone Air Quality

This indicator gives a grade to each county in the U.S. based on the annual number of high ozone days.

Annual Ozone Air Quality

2
3
Comparison: Air Quality Index 

2

Measurement Period: 2010-2012

County: Miami-Dade

Categories: Environment / Air, Health / Environmental & Occupational Health
Technical Note: The American Lung Association (ALA) assigns grades A-F to counties (A=1; B=2; C=3; D=4; F=5), based on the average annual number of days that ozone levels exceeded U.S. standards during the three year measurement period. The five-point grading scale was used for the distribution (Green = <2; Yellow = 2 - 3; Red = >3). The air quality data is collected by the EPA and summarized by the ALA.
Maintained By: Healthy Communities Institute
Last Updated: May 2014
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Why is this important?

Ozone is an extremely reactive gas composed of three oxygen atoms. It is the primary ingredient of smog air pollution and very harmful to breathe. Ozone essentially attacks lung tissue by reacting chemically with it. It also damages crops, trees and other matter -- even breaking down rubber compounds.

Annual Ozone Air Quality : Time Series

2005-2007: 4 2006-2008: 5 2007-2009: 4 2008-2010: 3 2009-2011: 3 2010-2012: 2

Annual Ozone Air Quality

Comparison: Prior Value 

2

Measurement Period: 2010-2012

County: Miami-Dade

Categories: Environment / Air, Health / Environmental & Occupational Health
Technical Note: The trend is a comparison between the most recent and previous measurement periods. Confidence intervals were not taken into account in determining the direction of the trend.
Maintained By: Healthy Communities Institute
Last Updated: May 2014

Why is this important?

Ozone is an extremely reactive gas composed of three oxygen atoms. It is the primary ingredient of smog air pollution and very harmful to breathe. Ozone essentially attacks lung tissue by reacting chemically with it. It also damages crops, trees and other matter -- even breaking down rubber compounds.

Annual Ozone Air Quality : Time Series

2005-2007: 4 2006-2008: 5 2007-2009: 4 2008-2010: 3 2009-2011: 3 2010-2012: 2