Maricopa County, Arizona
AQI 71 · Moderate71
Median AQI
101
90th Percentile
366
Max AQI
304
Days with Data
Ranked #13 of 13 counties in Arizona (by median AQI, lower is better)
Monthly Median AQI — 2025
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71
Median AQI
101
90th Percentile
366
Max AQI
304
Days with Data
Ranked #13 of 13 counties in Arizona (by median AQI, lower is better)
Click a bar to view that month's details