SmogRank / Countries / United States / Indiana

Most polluted cities in Indiana, United States

14 measured cities, last 24 hours; 0 above the WHO 24-hour guideline. Worst: Indianapolis at 13.3 µg/m³, #196 in the world.

4 good  10 moderate

  1. 1Indianapolis 13.30.9×
  2. 2Evansville 12.90.9×
  3. 3Terre Haute 12.70.8×
  4. 4Muncie 12.60.8×
  5. 5Portage 12.20.8×
  6. 6Gary 11.20.7×
  7. 7East Chicago 10.80.7×
  8. 8Kokomo 10.50.7×
  9. 9Bloomington 10.40.7×
  10. 10Hammond 9.80.7×
  11. 11Elkhart 9.00.6×
  12. 12Lafayette 9.00.6×
  13. 13Columbus 8.30.6×
  14. 14Fishers 8.00.5×
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≈ 7 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≈ 9 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 21:07 UTC. Values are PM2.5 in µg/m³ (fine particles), the median of each city's monitors.