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RankingsLouisianaCleanest air

Counties with the Cleanest Air in Louisiana

The top 22 of 22 Louisiana counties on GIS Map, ranked by lowest median Air Quality Index, counting only counties that host an EPA air monitor.

#CountyMedian AQI
1St. James Parish
32
2Ascension Parish
33
3Pointe Coupee Parish
36
4St. John the Baptist Parish
36
5St. Martin Parish
38
6Rapides Parish
39
7St. Tammany Parish
39
8Terrebonne Parish
39
9Caddo Parish
41
10Iberville Parish
41
11Orleans Parish
41
12Ouachita Parish
41
13Livingston Parish
44
14St. Bernard Parish
45
15Jefferson Parish
46
16Bossier Parish
47
17Tangipahoa Parish
47
18Lafourche Parish
48
19Calcasieu Parish
49
20West Baton Rouge Parish
49
21East Baton Rouge Parish
51
22Lafayette Parish
51

Source: EPA Air Quality Index annual summary (2024). All counties with data are ranked. Estimates carry margins of error.

Citing this page: GIS Map, “Counties with the Cleanest Air in Louisiana”, https://gismap.land/rankings/louisiana/cleanest-air-counties. Figures from EPA Air Quality Index annual summary (2024).

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