What is the air quality trend in Nanaimo?

Over the past 8 days, Nanaimo had an average AQI of 52 based on station measurements. The worst day was 2026-05-25 with AQI 74.

How is Nanaimo air quality measured?

Air quality in Nanaimo 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 Nanaimo, Canada

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

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

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

156h

PM2.5 Station

156h · 2 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-05-29	36	17–88	9.6 µg/m³	13h	4
2026-05-28	34	2–233	13.5 µg/m³	24h	4
2026-05-27	57	16–160	19.1 µg/m³	21h	4
2026-05-26	71	12–276	30.1 µg/m³	20h	3
2026-05-25	74	11–189	29.8 µg/m³	24h	4
2026-05-24	53	15–115	16.3 µg/m³	23h	4
2026-05-23	40	8–153	11.5 µg/m³	23h	3
2026-05-22	55	13–104	16.9 µg/m³	8h	3

Back to Nanaimo Air Quality