Garrett County, Maryland

AQI 41 · Good

YearMonth

41

Median AQI

55

90th Percentile

80

Max AQI

303

Days with Data

Ranked #10 of 16 counties in Maryland (by median AQI, lower is better)

Monthly Median AQI — 2025

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AQI Category Breakdown

Adjacent Counties

Allegany County Fayette County, Pennsylvania Somerset County, Pennsylvania Grant County, West Virginia Mineral County, West Virginia Preston County, West Virginia

External Links

Garrett County, Maryland on Wikipedia