SmogRank / Countries / New Zealand / July 2026

Most polluted cities in New Zealand, July 2026

4 cities in New Zealand ranked by their average PM2.5 over the 31 days. Worst: Rangiora at 22.0 µg/m³, #202 of 2,262 cities in the world. Cleanest: Dunedin at 9.8. A city needs measurements on 70% of the days to be ranked.

  1. 1RangioraCanterbury
    22.0
  2. 2TimaruCanterbury
    20.5
  3. 3ChristchurchCanterbury
    14.8
  4. 4Dunedinlow-cost sensorsOtago
    9.8
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, July 2026 · New Zealand now