SmogRank / Countries / New Zealand / January 2025

Most polluted cities in New Zealand, January 2025

4 cities in New Zealand ranked by their average PM2.5 over the 31 days. Worst: Timaru at 5.4 µg/m³, #1,695 of 1,937 cities in the world. Cleanest: Christchurch at 4.0. A city needs measurements on 70% of the days to be ranked.

  1. 1TimaruCanterbury
    5.4
  2. 2AshburtonCanterbury
    4.7
  3. 3RangioraCanterbury
    4.1
  4. 4ChristchurchCanterbury
    4.0
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, January 2025 · New Zealand now