Jefferson County, Louisiana
AQI 48 · Good48
Median AQI
64
90th Percentile
101
Max AQI
273
Days with Data
Ranked #20 of 22 counties in Louisiana (by median AQI, lower is better)
Monthly Median AQI — 2025
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48
Median AQI
64
90th Percentile
101
Max AQI
273
Days with Data
Ranked #20 of 22 counties in Louisiana (by median AQI, lower is better)
Click a bar to view that month's details