What is the air quality trend in Courtenay?

Over the past 15 days, Courtenay had an average AQI of 43 based on station measurements. The worst day was 2026-05-28 with AQI 63.

How is Courtenay air quality measured?

Air quality in Courtenay 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 Courtenay, Canada

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

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

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

262h

PM2.5 Station

262h · 4 stations

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-06-09	13	13–13	3.1 µg/m³	1h	4
2026-06-08	35	5–72	9.1 µg/m³	20h	2
2026-06-07	36	5–98	10.1 µg/m³	17h	2
2026-06-06	44	5–224	17.3 µg/m³	23h	2
2026-06-05	39	2–76	10.4 µg/m³	14h	2
2026-06-04	42	17–153	11.7 µg/m³	17h	2
2026-06-03	39	15–75	10.1 µg/m³	13h	2
2026-06-02	44	6–175	14.4 µg/m³	22h	2
2026-06-01	47	13–152	13.0 µg/m³	20h	3
2026-05-31	53	12–124	16.9 µg/m³	19h	2
2026-05-30	53	15–129	16.2 µg/m³	17h	2
2026-05-29	57	10–153	17.9 µg/m³	20h	3
2026-05-28	63	6–156	20.1 µg/m³	20h	2
2026-05-27	38	15–87	10.1 µg/m³	20h	2
2026-05-26	45	4–175	14.8 µg/m³	19h	2

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