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County Air Quality


Summary: Air quality data for 13 indicators based on the monitoring of the Clean Air Act

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This database contains 13 air quality measures for all U.S. counties.  Monitoring data represent the quality of air in the vicinity of the monitoring site and, for some pollutants, may not necessarily represent urban-wide air quality.  Data meet the EPA's air quality "completeleness" criteria, listed below.  These summaries are not adequate to numerically rank counties according to their air quality.  

 

There are data quality issues that affect Florida, Illinois, most of Tennessee and parts of Kentucky, and the EPA has removed these data.  For additional information, see Air Data.


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Geographic Coverage: Counties

Periodicity: Annually

Series Begins/Ends: 1998 - 2018

Data Source: U.S. Environmental Protection Agency

New Database added:  Jan. 23, 2020 Estimated next update: Jan. 01, 2021

Please enter a state or county.    Data are not available for all counties in all time periods.    All

Please enter an air quality category.    Data are not available for all categories in all time periods.    All     CSV

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