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PM-2.5 (2006) Nonattainment Area Summary

Data is current as of August 31, 2020


Classification Number of Areas Number of Counties 2010 Population
Serious 5 19 21,828,537
Moderate 9 21 9,611,341
SUBTOTAL 14 40 31,439,878
 
GRAND TOTAL 14 40 31,439,878

County subtotals and grand totals may not equal sum of parts. Part counties are only counted one time within groupings. Multi-state nonattainment areas are not considered maintenance areas until all states in the area have been redesignated