What is the air quality trend in Nanaimo?

Over the past 15 days, Nanaimo had an average AQI of 51 based on station measurements. The worst day was 2026-05-25 with AQI 71.

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

291h

PM2.5 Station

291h · 1 station

Temperature GFS model

56pt

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	69	13–239	31.8 µg/m³	21h	4
2026-05-21	37	10–130	10.4 µg/m³	24h	3
2026-05-20	61	9–180	21.3 µg/m³	21h	3
2026-05-19	52	9–159	16.6 µg/m³	20h	2
2026-05-18	48	9–320	24.2 µg/m³	16h	2
2026-05-17	65	9–154	22.3 µg/m³	12h	2
2026-05-16	52	14–105	14.8 µg/m³	21h	5
2026-05-15	43	22–108	12.0 µg/m³	8h	5

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