New Zealand AQI Analytics
OpenAQ-derived PM2.5 and PM10 history for 7 cities, mapped to AQI Now city pages and normalized to the US EPA AQI scale.
Search city analytics
- Cities
- 7
- Locations
- 17
- Daily rows
- 1,755
- Avg EPA AQI
- 29
with OpenAQ history
mapped monitors
2024-01-01 to 2024-12-31
6.3 ug/m3 PM2.5
Current data story
The highest average AQI in this pilot slice is Kairaki, with an EPA AQI average of 42 and PM2.5 around 9.9 ug/m3. Its worst month is July.
Source: OpenAQ local parquet plus raw CSV coordinate recovery. Build 2026-05-12T00:27:56.105574+00:00.
Country average
29
US EPA scale
PM2.5 6.3 ug/m3 · PM10 10.6 ug/m3
Analytics tools
City AQI Comparison
LiveRank cities side by side using OpenAQ PM2.5 and PM10 history normalized to US EPA AQI.
7 eligible cities
Open toolSeasonal Pollution
LiveFind each city's worst and cleanest months from daily OpenAQ-derived EPA AQI.
7 eligible cities
Open toolHealth Impact
LiveTranslate PM2.5 exposure into WHO exceedance and a simple cigarette-equivalent indicator.
7 eligible cities
Open toolCities ranked by average AQI
| City | Avg AQI | PM2.5 | Worst month | Trend | Coverage |
|---|---|---|---|---|---|
| Kairaki Canterbury, New Zealand | 42 | 9.9 ug/m3 | July | n/a | 360 days · 2 locations |
| Timaru Canterbury, New Zealand | 41 | 8.6 ug/m3 | June | n/a | 362 days · 4 locations |
| Ashton Canterbury, New Zealand | 38 | 8.2 ug/m3 | June | n/a | 357 days · 1 locations |
| Christchurch Canterbury, New Zealand | 37 | 8.2 ug/m3 | July | n/a | 360 days · 4 locations |
| Dunedin Otago, New Zealand | 27 | 5.8 ug/m3 | July | n/a | 161 days · 4 locations |
| Levin Manawatu-Wanganui, New Zealand | 14 | 2.6 ug/m3 | December | n/a | 59 days · 1 locations |
| Northcote Auckland, New Zealand | 5 | 0.8 ug/m3 | September | n/a | 96 days · 1 locations |