Allen County, Indiana

AQI 45 · Good

YearMonth

45

Median AQI

69

90th Percentile

115

Max AQI

273

Days with Data

Ranked #26 of 33 counties in Indiana (by median AQI, lower is better)

Monthly Median AQI — 2025

Click a bar to view that month's details

AQI Category Breakdown

Adjacent Counties

Adams County DeKalb County Huntington County Noble County Wells County Whitley County Defiance County, Ohio Paulding County, Ohio Van Wert County, Ohio

External Links

Allen County, Indiana on Wikipedia