Thurston County, Washington
AQI 26 · Good26
Median AQI
44
90th Percentile
52
Max AQI
161
Days with Data
Ranked #18 of 31 counties in Washington (by median AQI, lower is better)
Monthly Median AQI — 2025
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26
Median AQI
44
90th Percentile
52
Max AQI
161
Days with Data
Ranked #18 of 31 counties in Washington (by median AQI, lower is better)
Click a bar to view that month's details