What is the air quality trend in L'Ancienne-Lorette?

Over the past 6 days, L'Ancienne-Lorette had an average AQI of 40 based on station measurements. The worst day was with AQI .

How is L'Ancienne-Lorette air quality measured?

Air quality in L'Ancienne-Lorette 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 L'Ancienne-Lorette, Canada

Name: L'Ancienne-Lorette Air Quality History
Creator: CERNS.IO
License: https://creativecommons.org/licenses/by/4.0/

Historical PM2.5 and AQI trend from monitoring stations near L'Ancienne-Lorette, Canada.

Current AQI
Good

48 Hours 7 Days 14 Days 20 Days

PM2.5 Trend

110h · 22 stations

Daily Summary

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-04-11	20	6–37	4.7 µg/m³	16h	28
2026-04-10	32	10–104	8.7 µg/m³	24h	36
2026-04-09	31	20–62	7.7 µg/m³	17h	36
2026-04-08	49	25–75	13.3 µg/m³	9h	27
2026-04-07	47	16–174	14.8 µg/m³	24h	18
2026-04-06	64	1–249	34.3 µg/m³	20h	13

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