Siskiyou County, California
AQI 6 · Good6
Median AQI
9
90th Percentile
10
Max AQI
15
Days with Data
Ranked #1 of 46 counties in California (by median AQI, lower is better)
Monthly Median AQI — 2025
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6
Median AQI
9
90th Percentile
10
Max AQI
15
Days with Data
Ranked #1 of 46 counties in California (by median AQI, lower is better)
Click a bar to view that month's details