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PM-2.5 (1997) Nonattainment Area Summary

As of February 13, 2017


Classification Number of Areas Number of Counties 2010 Population
Serious 1 8 3,842,165
Moderate 7 33 21,982,629
SUBTOTAL 8 41 25,824,794
 
GRAND TOTAL 8 41 25,824,794

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