What is the air quality trend in Chilliwack?

Over the past 20 days, Chilliwack had an average AQI of 45 based on station measurements. The worst day was 2026-05-25 with AQI 62.

How is Chilliwack air quality measured?

Air quality in Chilliwack 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 Chilliwack, Canada

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

Historical PM2.5 and AQI trend from monitoring stations near Chilliwack, Canada.

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

477h

PM2.5 Station

477h · 2 stations

Temperature GFS model

80pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-05-29	40	15–85	10.4 µg/m³	24h	6
2026-05-28	45	18–204	16.4 µg/m³	24h	6
2026-05-27	45	16–171	14.0 µg/m³	24h	6
2026-05-26	47	9–169	15.7 µg/m³	24h	6
2026-05-25	62	13–181	24.0 µg/m³	24h	6
2026-05-24	55	21–103	15.7 µg/m³	24h	8
2026-05-23	46	11–158	13.7 µg/m³	24h	7
2026-05-22	45	15–133	13.0 µg/m³	24h	6
2026-05-21	55	16–119	16.3 µg/m³	24h	7
2026-05-20	43	16–131	12.3 µg/m³	24h	5
2026-05-19	39	14–162	11.7 µg/m³	24h	5
2026-05-18	36	14–102	9.7 µg/m³	24h	4
2026-05-17	30	6–97	8.5 µg/m³	23h	3
2026-05-16	37	12–89	9.7 µg/m³	22h	7
2026-05-15	46	12–111	12.8 µg/m³	24h	7
2026-05-14	40	15–70	10.3 µg/m³	24h	8
2026-05-13	43	20–101	11.6 µg/m³	24h	9
2026-05-12	45	15–95	12.3 µg/m³	24h	8
2026-05-11	55	15–157	17.3 µg/m³	24h	8
2026-05-10	46	15–108	12.9 µg/m³	24h	7

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