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PM-2.5 (2012) Nonattainment Area Summary with History

Data is current as of June 30, 2020

Original PM-2.5 (2012) areas were designated effective April 15, 2015.


  NUMBER OF AREAS NUMBER OF COUNTIES 2010 POPULATION
Classif. Original 2015 Baseline Adjusted
Baseline*
Today Redesig Original 2015 Baseline Adjusted
Baseline*
Today Redesig Original 2015 Baseline Adjusted
Baseline*
Today Redesig
Moderate 9 9 6 3 20 20 16 4 23,223,181 23,223,181 20,949,156 2,274,025
SUBTOTAL 9 9 6 3 20 20 16 4 23,223,181 23,223,181 20,949,156 2,274,025
   
GRAND
TOTAL
9 9 6 3 20 20 16 4 23,223,181 23,223,181 20,949,156 2,274,025

* Please Note: Changes can occur that adjust the original baseline counts, e.g., classification changes, area boundary changes, new areas designated nonattainment.

County subtotals and grand totals may not equal sum of parts. Part counties are only counted one time within groups.

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