Polk County, Arkansas
AQI 40 · Good40
Median AQI
58
90th Percentile
119
Max AQI
271
Days with Data
Ranked #3 of 11 counties in Arkansas (by median AQI, lower is better)
Monthly Median AQI — 2025
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40
Median AQI
58
90th Percentile
119
Max AQI
271
Days with Data
Ranked #3 of 11 counties in Arkansas (by median AQI, lower is better)
Click a bar to view that month's details