Jefferson County, Texas
AQI 52 · Moderate52
Median AQI
64
90th Percentile
93
Max AQI
243
Days with Data
Ranked #34 of 45 counties in Texas (by median AQI, lower is better)
Monthly Median AQI — 2025
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52
Median AQI
64
90th Percentile
93
Max AQI
243
Days with Data
Ranked #34 of 45 counties in Texas (by median AQI, lower is better)
Click a bar to view that month's details