Air quality · Arkansas
Air quality in Arkansas
Across the 4 Arkansas ZIPs with EPA county air-quality data, the median day ranges from Good to Moderate (median AQI 40–55). No day in those counties reached Unhealthy in 2025. This is a 2025 county annual summary, not a live reading.
Last verified 2026-09-24 · methodology
Air quality by ZIP code in Arkansas
EPA's 2025 annual summary for each ZIP's county. Median AQI is the typical day; lower is cleaner.
| ZIP | Median AQI | Good days | Unhealthy or worse |
|---|---|---|---|
| 72201Little RockPulaski County | 55 Moderate | 114 of 365 | 0 |
| 72701Fayetteville (AR)Washington County | 40 Good | 304 of 365 | 0 |
| 72703Fayetteville (AR)Washington County | 40 Good | 304 of 365 | 0 |
| 72223Little Rock (West)Pulaski County | 55 Moderate | 114 of 365 | 0 |
County-level figures from EPA Air Quality System (AQS), annual county summary, joined to each ZIP by county. None of them is a measurement at a specific address.
What lands here
Pages show the 2025 median AQI category (Good, Moderate, Unhealthy for Sensitive Groups, Unhealthy, Very Unhealthy, Hazardous) for the ZIP's county, plus the year's max/90th-percentile AQI and day-count breakdown by category.
Source & refresh
EPA Air Quality System (AQS), annual county summary. Refreshed annual (epa aqs publication). Primary source →
Arkansas top concern
Flooding (Mississippi alluvial), tornadoes
Arkansas's eastern delta sits in the Mississippi alluvial floodplain with extensive FEMA AE/A zones. Western Ozarks have radon Zone 1-2 designations. Tornado activity peaks April-May. Lead-service-line inventories under the 2024 LCRR are still being submitted by smaller utilities.
See Arkansas state page for the full state-level rollup across all 12 dimensions.
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