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8-Hour Ozone (2015) Maintenance Area (Redesignated from Nonattainment) Summary

Data is current as of September 30, 2021


Classification Number of Areas Number of Counties 2010 Population
Extreme 0 0 0
Severe 15 0 0 0
Serious 0 0 0
Moderate 0 0 0
Marginal 1 4 1,650,276
Marginal (Rural Transport) 1 0 31
SUBTOTAL 2 4 1,650,307
 
GRAND TOTAL 2 4 1,650,307

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