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PM-2.5 (2006) Nonattainment Area Summary
PM-2.5 (2006) Nonattainment Area Summary
Data is current as of December 31, 2020Classification | 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