PM-2.5 (2012) Nonattainment Area Summary with History

Data is current as of March 31, 2024

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

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	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
Serious	0	3	3	0	0	13	13	0	0	19,564,250	19,564,250	0
Moderate	9	6	2	4	20	7	2	5	23,223,181	3,658,931	1,377,409	2,281,522
SUBTOTAL	9	9	5	4	20	20	15	5	23,223,181	23,223,181	20,941,659	2,281,522
GRAND TOTAL	9	9	5	4	20	20	15	5	23,223,181	23,223,181	20,941,659	2,281,522

* Please Note: Changes can occur that adjust the original baseline counts, e.g., classification changes, area boundary changes, new areas designated nonattainment.
See the report listing these adjustments to original 2015 nonattainment areas.

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