Louisiana
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High Ozone Days Particle Pollution Groups At Risk  
County
Grade
Wgt.
Avg.
Orange
Days
Red
Days
Purple
Days
Ascension Parish D 3.0 9 0 0
Beauregard Parish * * * * *
Bossier Parish C 1.7 5 0 0
Caddo Parish C 2.0 6 0 0
Calcasieu Parish D 2.3 7 0 0
Concordia Parish - - - - -
East Baton Rouge Parish F 10.8 31 1 0
Grant Parish * * * * *
Iberville Parish F 8.2 23 1 0
Jefferson Parish C 1.3 4 0 0
Lafayette Parish D 2.7 8 0 0
Lafourche Parish C 1.0 3 0 0
Livingston Parish C 1.0 3 0 0
Orleans Parish * * * * *
Ouachita Parish B 0.3 1 0 0
Plaquemines Parish - - - - -
Pointe Coupee Parish F 3.8 10 1 0
Rapides Parish - - - - -
St Bernard Parish * * * * *
St Charles Parish C 1.3 4 0 0
St James Parish C 1.0 3 0 0
St John The Baptist Parish C 1.0 3 0 0
St Mary Parish * * * * *
St Tammany Parish - - - - -
Tangipahoa Parish - - - - -
Terrebonne Parish - - - - -
West Baton Rouge Parish F 3.7 11 0 0
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American Lung Association State of the Air: 2008 NOTES

(1) * indicates incomplete monitoring data for all three years. Therefore, those counties are excluded from the grade analysis.
(2) A dash (-) indicates that there is no monitor collecting data in the county.

More about Methodology.