Del Norte County, California
AQI 33 · Good33
Median AQI
54
90th Percentile
70
Max AQI
179
Days with Data
Ranked #6 of 46 counties in California (by median AQI, lower is better)
Monthly Median AQI — 2025
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33
Median AQI
54
90th Percentile
70
Max AQI
179
Days with Data
Ranked #6 of 46 counties in California (by median AQI, lower is better)
Click a bar to view that month's details