Orange County, California
AQI 52 · Moderate52
Median AQI
77
90th Percentile
159
Max AQI
274
Days with Data
Ranked #35 of 46 counties in California (by median AQI, lower is better)
Monthly Median AQI — 2025
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52
Median AQI
77
90th Percentile
159
Max AQI
274
Days with Data
Ranked #35 of 46 counties in California (by median AQI, lower is better)
Click a bar to view that month's details