SmogRank / World / New Zealand / August 2026

Most polluted cities in New Zealand, August 2026

4 cities in New Zealand ranked by their average PM2.5 over the 31 days. Worst: Rangiora at 12.1 µg/m³, #373 of 2,309 cities in the world. Cleanest: Dunedin at 6.3. A city needs measurements on 70% of the days to be ranked.

← Rangiora 12.1
Every city in New Zealand ranked for August 2026, one column each, worst on the left and cleanest on the right. Point at it to read a city; tap to open it.
  1. 1RangioraCanterbury
    57
  2. 2TimaruCanterbury
    55
  3. 3ChristchurchCanterbury
    53
  4. 4Dunedinlow-cost sensorsOtago
    35
Good0–50
Moderate51–100
Sensitive groups101–150
Unhealthy151–200
Very unhealthy201–300
Hazardous301+

The US EPA's Air Quality Index for PM2.5 (2024 breakpoints). Show values as: µg/m³ · US AQI · India AQI · China AQI · European AQI · UK DAQI · Canada AQHI+. About the scales

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

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SmogRank, most polluted cities in New Zealand, PM2.5, August 2026, smogrank.com/nz/history/2026-08 (accessed 2 Oct 2026).

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