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8-Hour Ozone (2015) Nonattainment Area Summary with History

Data is current as of May 31, 2024
  NUMBER OF AREAS NUMBER OF COUNTIES 2010 POPULATION
Classif. Original 2018 Baseline Adjusted
Baseline*
Today Redesig Original 2018 Baseline Adjusted
Baseline*
Today Redesig Original 2018 Baseline Adjusted
Baseline*
Today Redesig
Extreme 2 2 2 0 12 12 12 0 19,544,668 19,544,668 19,544,668 0
Severe 15 2 3 3 0 0 1 1 0 1,291,989 4,369,276 4,369,276 0
Serious 2 5 5 0 1 8 8 0 821,740 3,239,296 3,239,296 0
Moderate 5 25 23 2 32 154 140 14 25,711,980 85,677,823 79,044,552 6,633,271
Marginal 38 15 12 3 153 32 20 12 74,984,197 14,344,283 8,968,008 5,376,275
Marginal (Rural Transport) 2 3 1 2 2 2 1 1 31 17,035 0 17,035
SUBTOTAL 51 53 46 7 200 209 182 27 122,354,605 127,192,381 115,165,800 12,026,581
   
GRAND
TOTAL
51 53 46 7 200 209 182 27 122,354,605 127,192,381 115,165,800 12,026,581

* Please Note: Changes can occur that adjust the original baseline counts, e.g., classification changes, area boundary changes, new areas designated nonattainment. See the report listing these adjustments to original 2018 nonattainment areas.

County subtotals and grand totals may not equal sum of parts. Part counties are only counted one time across groups.

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