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

Data is current as of November 30, 2022
  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 23 23 0 32 146 146 0 25,711,980 79,080,830 79,080,830 0
Marginal 38 17 15 2 153 40 35 5 74,984,197 20,941,276 19,234,377 1,706,899
Marginal (Rural Transport) 2 3 1 2 2 2 1 1 31 17,035 0 17,035
SUBTOTAL 51 53 49 4 200 209 203 6 122,354,605 127,192,381 125,468,447 1,723,934
   
GRAND
TOTAL
51 53 49 4 200 209 203 6 122,354,605 127,192,381 125,468,447 1,723,934

* 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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