SmogRank / Countries / United States / Oklahoma

Most polluted cities in Oklahoma, United States

9 measured cities, last 30 days; 0 above the WHO 24-hour guideline. Worst: Durant at 9.7 µg/m³, #415 in the world.

Estimated: cities without a monitor

Oklahoma 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
Norman	≈ 10 µg/m³	Moderate
Broken Arrow	≈ 9 µg/m³	Good
Midwest City	≈ 9 µg/m³	Moderate
Enid	≈ 10 µg/m³	Moderate
Stillwater	≈ 10 µg/m³	Moderate
Muskogee	≈ 9 µg/m³	Moderate
Bartlesville	≈ 10 µg/m³	Moderate
Owasso	≈ 10 µg/m³	Moderate
Shawnee	≈ 8 µg/m³	Good
Yukon	≈ 10 µg/m³	Moderate
Ardmore	≈ 10 µg/m³	Moderate
Bixby	≈ 10 µg/m³	Moderate
Duncan	≈ 10 µg/m³	Moderate
Del City	≈ 10 µg/m³	Moderate
Sapulpa	≈ 10 µg/m³	Moderate
Mustang	≈ 10 µg/m³	Moderate
Sand Springs	≈ 10 µg/m³	Moderate
Bethany	≈ 10 µg/m³	Moderate
Altus	≈ 8 µg/m³	Good
Claremore	≈ 9 µg/m³	Moderate
El Reno	≈ 10 µg/m³	Moderate
Ada	≈ 9 µg/m³	Good
Tahlequah	≈ 9 µg/m³	Moderate
Chickasha	≈ 10 µg/m³	Moderate

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SmogRank, most polluted cities in Oklahoma, United States, PM2.5, last 30 days to 2 Oct 2026, 00:00 UTC, smogrank.com/us/region/oklahoma?w=30d.

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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.