SmogRank / Countries / New Zealand / 2026

Most polluted cities in New Zealand, 2026

4 cities in New Zealand ranked by their average PM2.5 so far (273 of 365 days); 4 above the WHO annual guideline (5.0 µg/m³). Worst: Rangiora at 10.8 µg/m³, #525 of 2,181 cities in the world. Cleanest: Dunedin at 5.5. A city needs measurements on 70% of the days to be ranked.

  1. 1RangioraCanterbury
    10.82.2×
  2. 2TimaruCanterbury
    10.62.1×
  3. 3ChristchurchCanterbury
    8.81.8×
  4. 4Dunedinlow-cost sensorsOtago
    5.51.1×
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, 2026 · New Zealand now