SmogRank / World / New Zealand / Canterbury / October 2025
Most polluted cities in Canterbury, New Zealand, October 2025
No city in Canterbury, New Zealand had measurements on 70% of the days, so October 2025 has no board for Canterbury, New Zealand.
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, October 2025 · All cities in New Zealand, October 2025 · Canterbury now