SmogRank / Countries / United States / Indiana

Most polluted cities in Indiana, United States

17 measured cities, this year; 17 above the WHO annual guideline. Worst: Fort Wayne at 10.0 µg/m³, #660 in the world.

12 good  5 moderate

  1. 1Fort Wayne 10.02.0×
  2. 2Hammond 9.61.9×
  3. 3Indianapolis 9.51.9×
  4. 4Portage 9.51.9×
  5. 5Elkhart 9.21.8×
  6. 6East Chicago 9.01.8×
  7. 7Evansville 8.81.8×
  8. 8Jeffersonville 8.81.8×
  9. 9South Bend 8.81.8×
  10. 10Gary 8.71.7×
  11. 11Michigan City 8.71.7×
  12. 12Muncie 8.31.7×
  13. 13Bloomington 8.21.6×
  14. 14Jasper 8.11.6×
  15. 15New Albany 8.11.6×
  16. 16Anderson 7.81.6×
  17. 17Lafayette 7.41.5×
Good0–9.0
Moderate9.1–35.4
Sensitive groups35.5–55.4
Unhealthy55.5–125.4
Very unhealthy125.5–225.4
Hazardous225.5+

Estimated: cities without a monitor

Indiana 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
Carmel≈ 7 µg/m³Good
Noblesville≈ 7 µg/m³Good
Greenwood≈ 6 µg/m³Good
Mishawaka≈ 6 µg/m³Good
Lawrence≈ 6 µg/m³Good
West Lafayette≈ 6 µg/m³Good
Westfield≈ 7 µg/m³Good
Richmond≈ 6 µg/m³Good
Merrillville≈ 6 µg/m³Good
Goshen≈ 7 µg/m³Good
Valparaiso≈ 6 µg/m³Good
Plainfield≈ 7 µg/m³Good
Granger≈ 7 µg/m³Good
Marion≈ 7 µg/m³Good
Crown Point≈ 6 µg/m³Good
Schererville≈ 8 µg/m³Good
Hobart≈ 6 µg/m³Good
Zionsville≈ 8 µg/m³Good
Brownsburg≈ 7 µg/m³Good
Franklin≈ 6 µg/m³Good
Munster≈ 8 µg/m³Good
Highland≈ 8 µg/m³Good
La Porte≈ 6 µg/m³Good
Clarksville≈ 6 µg/m³Good
Greenfield≈ 5 µg/m³Good
Fairfield Heights≈ 7 µg/m³Good
Seymour≈ 6 µg/m³Good
Shelbyville≈ 5 µg/m³Good
Vincennes≈ 8 µg/m³Good
Logansport≈ 7 µg/m³Good
New Castle≈ 6 µg/m³Good
Huntington≈ 7 µg/m³Good
Broad Ripple≈ 6 µg/m³Good
Avon≈ 7 µg/m³Good
Griffith≈ 8 µg/m³Good
Frankfort≈ 7 µg/m³Good
Dyer≈ 8 µg/m³Good
Crawfordsville≈ 7 µg/m³Good
Lebanon≈ 7 µg/m³Good
New Haven≈ 6 µg/m³Good

Updated 2026-10-01 18:07 UTC. Values are PM2.5 in µg/m³ (fine particles), the median of each city's monitors.