SmogRank / Countries / New Zealand / June 2025

Most polluted cities in New Zealand, June 2025

7 cities in New Zealand ranked by their average PM2.5 over the 30 days. Worst: Rangiora at 22.4 µg/m³, #120 of 1,912 cities in the world. Cleanest: Hamilton at 8.1. A city needs measurements on 70% of the days to be ranked.

  1. 1RangioraCanterbury
    22.4
  2. 2TaupoWaikato Region
    15.7
  3. 3ChristchurchCanterbury
    14.9
  4. 4TimaruCanterbury
    13.4
  5. 5AshburtonCanterbury
    12.1
  6. 6Dunedinlow-cost sensorsOtago
    9.0
  7. 7HamiltonWaikato Region
    8.1
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, June 2025 · New Zealand now