SmogRank / Countries / New Zealand
Most polluted cities in New Zealand
4 measured cities, last 30 days; 0 above the WHO 24-hour guideline. Worst: Rangiora at 9.1 µg/m³, #474 in the world.
3 good 1 moderate
- 1RangioraCanterbury 9.1
- 2TimaruCanterbury 8.0
- 3ChristchurchCanterbury 7.3
- 4Dunedinlow-cost sensorsOtago 2.3
Estimated: cities without a monitor
New Zealand cities we can't measure, with model estimates for the last 7 days. Listed by population, not ranked: estimates aren't precise enough to rank. Model estimates from the Copernicus Atmosphere Monitoring Service (CAMS), adjusted to measured cities nearby where there are any. Adjusted, a single day lands within ×1.5 of what a monitor would read about two times in three; unadjusted, it can be off by half or double. Treat them as a guide, not a measurement.
| City | 7-day estimate |
|---|---|
| Auckland | ≈ 8 µg/m³ |
| Wellington | ≈ 4 µg/m³ |
| Manukau City | ≈ 8 µg/m³ |
| Hamilton | ≈ 7 µg/m³ |
| Tauranga | ≈ 6 µg/m³ |
| Lower Hutt | ≈ 4 µg/m³ |
| Palmerston North | ≈ 4 µg/m³ |
| New Plymouth | ≈ 8 µg/m³ |
| Hastings | ≈ 3 µg/m³ |
| Napier | ≈ 3 µg/m³ |
| Rotorua | ≈ 5 µg/m³ |
| Porirua | ≈ 4 µg/m³ |
| Invercargill | ≈ 4 µg/m³ |
| Papatoetoe | ≈ 8 µg/m³ |
| Nelson | ≈ 3 µg/m³ |
| Whangarei | ≈ 7 µg/m³ |
| Whanganui | ≈ 5 µg/m³ |
| Upper Hutt | ≈ 4 µg/m³ |
| Manurewa | ≈ 8 µg/m³ |
| Gisborne | ≈ 3 µg/m³ |
| Papakura | ≈ 8 µg/m³ |
| Rolleston | ≈ 12 µg/m³ |
| Paraparaumu | ≈ 4 µg/m³ |
| Blenheim | ≈ 2 µg/m³ |
| Masterton | ≈ 4 µg/m³ |
| Remuera | ≈ 8 µg/m³ |
| Taupo | ≈ 4 µg/m³ |
| Avondale | ≈ 8 µg/m³ |
| Otara | ≈ 8 µg/m³ |
| New Lynn | ≈ 8 µg/m³ |
| Mangere | ≈ 8 µg/m³ |
| Ashburton | ≈ 7 µg/m³ |
| Pukekohe East | ≈ 8 µg/m³ |
| Wainuiomata | ≈ 4 µg/m³ |
| Stoke | ≈ 3 µg/m³ |
| Richmond | ≈ 3 µg/m³ |
| Levin | ≈ 4 µg/m³ |
| Whakatane | ≈ 5 µg/m³ |
| Otahuhu | ≈ 8 µg/m³ |
| Takanini | ≈ 8 µg/m³ |
Regions
Measured cities in each region (30 days).
Updated 2026-10-01 23:07 UTC. Values are PM2.5 in µg/m³ (fine particles), the median of each city's monitors.