SmogRank / Countries / United States / Mississippi

Most polluted cities in Mississippi, United States

5 measured cities ranked by PM2.5, last 30 days. Worst: Hernando at 8.5 µg/m³, #544 in the world.

#City µg/m³
1Hernando Mississippi
8.5
2Hattiesburg Mississippi
7.6
3Jackson Mississippi
6.9
4Gulfport Mississippi
6.6
5Pascagoula Mississippi
5.7
Good 0–9.0Moderate 9.1+Unhealthy for sensitive groups 35.5+Unhealthy 55.5+Very unhealthy 125.5+Hazardous 225.5+No data

Estimated: cities without a monitor

Mississippi 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.

City7-day estimateBand
West Gulfport estimated≈ 9 µg/m³Moderate
Southaven estimated≈ 6 µg/m³Good
Biloxi estimated≈ 7 µg/m³Good
Meridian estimated≈ 6 µg/m³Good
Olive Branch estimated≈ 6 µg/m³Good
Tupelo estimated≈ 5 µg/m³Good
Greenville estimated≈ 7 µg/m³Good
Horn Lake estimated≈ 6 µg/m³Good
Pearl estimated≈ 8 µg/m³Good
Madison estimated≈ 8 µg/m³Good
Starkville estimated≈ 7 µg/m³Good
Clinton estimated≈ 9 µg/m³Good
Ridgeland estimated≈ 8 µg/m³Good
Brandon estimated≈ 8 µg/m³Good
Columbus estimated≈ 7 µg/m³Good
Vicksburg estimated≈ 7 µg/m³Good
Oxford estimated≈ 5 µg/m³Good
Laurel estimated≈ 10 µg/m³Moderate
Gautier estimated≈ 7 µg/m³Good
Ocean Springs estimated≈ 7 µg/m³Good
Clarksdale estimated≈ 6 µg/m³Good
Long Beach estimated≈ 9 µg/m³Good
Greenwood estimated≈ 11 µg/m³Moderate
Natchez estimated≈ 6 µg/m³Good

Updated 2026-10-01 10:07 UTC. Values are PM2.5 in µg/m³ (fine particles), the median of each city's monitors.