What is the air quality trend in Christchurch?

Over the past 21 days, Christchurch had an average AQI of 56 based on station measurements. The worst day was 2026-05-17 with AQI 79.

How is Christchurch air quality measured?

Air quality in Christchurch is measured by ground-level monitoring stations that report PM2.5 and PM10 concentrations hourly. CERNS.IO aggregates readings from nearby stations and converts PM2.5 to the US EPA Air Quality Index (AQI) scale.

Air Quality History for Christchurch, United Kingdom

Name: Christchurch Air Quality History
Creator: CERNS.IO
License: https://creativecommons.org/licenses/by/4.0/

Historical PM2.5 and AQI trend from monitoring stations near Christchurch, United Kingdom.

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

454h

PM2.5 Station

454h · 3 stations

Temperature GFS model

80pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-05-29	39	22–80	9.8 µg/m³	19h	2
2026-05-28	52	14–139	14.1 µg/m³	21h	3
2026-05-27	59	28–174	18.9 µg/m³	21h	2
2026-05-26	49	13–147	13.6 µg/m³	19h	3
2026-05-25	71	13–168	24.5 µg/m³	24h	3
2026-05-24	35	5–70	8.9 µg/m³	21h	2
2026-05-23	47	20–116	12.8 µg/m³	24h	2
2026-05-22	50	22–159	14.1 µg/m³	22h	3
2026-05-21	64	17–205	23.6 µg/m³	24h	3
2026-05-20	64	17–171	22.2 µg/m³	22h	3
2026-05-19	68	18–156	22.5 µg/m³	24h	3
2026-05-18	75	8–306	34.3 µg/m³	24h	3
2026-05-17	79	20–161	26.4 µg/m³	22h	5
2026-05-16	56	12–161	17.8 µg/m³	20h	5
2026-05-15	56	21–224	20.1 µg/m³	24h	5
2026-05-14	52	13–100	14.7 µg/m³	24h	5
2026-05-13	44	12–102	12.2 µg/m³	24h	4
2026-05-12	77	15–500	45.8 µg/m³	24h	4
2026-05-11	45	16–141	12.2 µg/m³	24h	4
2026-05-10	61	19–283	22.8 µg/m³	24h	5
2026-05-09	41	10–61	10.5 µg/m³	3h	5

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