Jefferson County, Tennessee
AQI 42 · Good42
Median AQI
51
90th Percentile
93
Max AQI
122
Days with Data
Ranked #16 of 23 counties in Tennessee (by median AQI, lower is better)
Monthly Median AQI — 2025
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42
Median AQI
51
90th Percentile
93
Max AQI
122
Days with Data
Ranked #16 of 23 counties in Tennessee (by median AQI, lower is better)
Click a bar to view that month's details