What is the air quality trend in Québec?

Over the past 7 days, Québec had an average AQI of 61 based on station measurements. The worst day was with AQI .

How is Québec air quality measured?

Air quality in Québec 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 Québec, Canada

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

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

Current AQI
Good

48 Hours 7 Days 14 Days 20 Days

PM2.5 Trend

109h · 39 stations

Daily Summary

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-04-11	29	23–35	7.1 µg/m³	3h	38
2026-04-10	32	10–106	8.7 µg/m³	24h	35
2026-04-09	32	20–70	8.0 µg/m³	17h	36
2026-04-08	50	25–76	13.5 µg/m³	9h	26
2026-04-07	48	16–177	15.5 µg/m³	24h	17
2026-04-06	68	1–281	38.1 µg/m³	20h	12
2026-04-04	169	11–500	115.8 µg/m³	12h	10

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