SmogRank / Countries / United States / Arkansas

Most polluted cities in Arkansas, United States

1 measured city, last 24 hours; 0 above the WHO 24-hour guideline. Worst: Little Rock at 10.0 µg/m³, #440 in the world.

Estimated: cities without a monitor

Arkansas cities we can't measure, with model estimates for the last 7 days. Listed by population, not ranked: estimates aren't precise enough to rank. Model estimates from the Copernicus Atmosphere Monitoring Service (CAMS), adjusted to measured cities nearby where there are any. Adjusted, a single day lands within ×1.5 of what a monitor would read about two times in three; unadjusted, it can be off by half or double. Treat them as a guide, not a measurement.

City	7-day estimate	Band
Fayetteville	≈ 8 µg/m³	Good
Jonesboro	≈ 6 µg/m³	Good
North Little Rock	≈ 8 µg/m³	Good
Conway	≈ 7 µg/m³	Good
Rogers	≈ 8 µg/m³	Good
Pine Bluff	≈ 9 µg/m³	Good
Bentonville	≈ 9 µg/m³	Good
Hot Springs	≈ 7 µg/m³	Good
Benton	≈ 8 µg/m³	Good
Sherwood	≈ 8 µg/m³	Good
Texarkana	≈ 10 µg/m³	Moderate
Russellville	≈ 7 µg/m³	Good
Jacksonville	≈ 8 µg/m³	Good
Bella Vista	≈ 9 µg/m³	Good
Paragould	≈ 6 µg/m³	Good
Cabot	≈ 8 µg/m³	Good
Searcy	≈ 7 µg/m³	Good
Van Buren	≈ 9 µg/m³	Good
Bryant	≈ 8 µg/m³	Good
El Dorado	≈ 9 µg/m³	Moderate
Maumelle	≈ 8 µg/m³	Good
Siloam Springs	≈ 9 µg/m³	Moderate

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SmogRank, most polluted cities in Arkansas, United States, PM2.5, last 24 hours to 2 Oct 2026, 00:00 UTC, smogrank.com/us/region/arkansas.

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Updated 2026-10-02 00:07 UTC. Values are PM2.5 in µg/m³ (fine particles), the median of each city's monitors.