SmogRank / Countries / New Zealand / September 2026

Most polluted cities in New Zealand, September 2026

4 cities in New Zealand ranked by their average PM2.5 over the 30 days. Worst: Rangiora at 9.4 µg/m³, #448 of 2,332 cities in the world. Cleanest: Dunedin at 2.4. A city needs measurements on 70% of the days to be ranked.

  1. 1RangioraCanterbury
    9.4
  2. 2TimaruCanterbury
    8.0
  3. 3ChristchurchCanterbury
    7.3
  4. 4Dunedinlow-cost sensorsOtago
    2.4
Good0–9.0
Moderate9.1–35.4
Sensitive groups35.5–55.4
Unhealthy55.5–125.4
Very unhealthy125.5–225.4
Hazardous225.5+

All cities in the world, September 2026 · New Zealand now