What is the air quality trend in Nanaimo?

Over the past 8 days, Nanaimo had an average AQI of 55 based on station measurements. The worst day was 2026-05-22 with AQI 91.

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

153h

PM2.5 Station

153h · 1 station

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-05-29	37	19–72	10.0 µg/m³	14h	4
2026-05-28	29	12–68	7.1 µg/m³	24h	3
2026-05-27	62	17–162	20.3 µg/m³	21h	3
2026-05-26	54	15–148	16.4 µg/m³	21h	3
2026-05-25	71	16–198	28.0 µg/m³	24h	4
2026-05-24	54	15–161	16.8 µg/m³	23h	4
2026-05-23	44	17–126	12.1 µg/m³	21h	4
2026-05-22	91	20–235	49.7 µg/m³	5h	4

Back to Nanaimo Air Quality