San Juan County, Utah

AQI 46 · Good

YearMonth

46

Median AQI

67

90th Percentile

108

Max AQI

219

Days with Data

Ranked #7 of 17 counties in Utah (by median AQI, lower is better)

Monthly Median AQI — 2025

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AQI Category Breakdown

Adjacent Counties

Apache County, Arizona Coconino County, Arizona Navajo County, Arizona Dolores County, Colorado Montezuma County, Colorado Montrose County, Colorado San Miguel County, Colorado Garfield County Grand County Kane County Wayne County

External Links

San Juan County, Utah on Wikipedia