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PM-2.5 (2006) Nonattainment Area Summary

Data is current as of June 30, 2021


Classification Number of Areas Number of Counties 2010 Population
Serious 5 19 21,828,537
Moderate 8 19 9,486,143
SUBTOTAL 13 38 31,314,680
 
GRAND TOTAL 13 38 31,314,680

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