Louisiana(LA)

Air quality overview and monitoring data — 2025

186

Monitoring Sites

10,204

Active Monitors

37

Counties with Data

52

Cities Monitored

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County Air Quality

CountyMedian AQI90th %ileMax AQIGoodModerateUSGUnhealthy
Ascension33481082561510
St. James3449842472000
Pointe Coupee3549932532000
Rapides355367451200
St. John the Baptist3549872512200
St. Martin3650772492200
Caddo3854802264200
St. Tammany38581052304010
Tangipahoa385363511100
Terrebonne395766471400
Bossier40541012363610
Iberville41611052145810
Orleans4456711829200
Livingston45598416810300
St. Bernard4559931908300
Lafourche46587716910400
Ouachita46587116610600
Calcasieu476110816810320
Lafayette47617916610400
Jefferson486410116011210
West Baton Rouge506111213813410
East Baton Rouge516311513513810

Pollutant Trends

Ozone

No data available

PM2.5

No data available

PM10

No data available

CO

No data available

NO2

No data available

SO2

No data available

Neighboring States