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

Over the past 17 days, L'Ancienne-Lorette had an average AQI of 51 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

332h · 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
2026-04-04	152	11–411	88.1 µg/m³	15h	11
2026-04-03	113	42–183	50.2 µg/m³	24h	13
2026-04-02	35	12–142	10.3 µg/m³	23h	24
2026-04-01	94	17–163	35.5 µg/m³	23h	15
2026-03-31	49	19–115	14.5 µg/m³	23h	17
2026-03-30	53	22–108	15.1 µg/m³	12h	36
2026-03-29	35	15–79	9.1 µg/m³	23h	39
2026-03-28	38	21–87	9.7 µg/m³	24h	24
2026-03-27	23	9–51	5.5 µg/m³	24h	22
2026-03-26	21	7–40	5.0 µg/m³	24h	26
2026-03-25	26	21–43	6.2 µg/m³	7h	17

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