What is the air quality trend in L'Assomption?

Over the past 8 days, L'Assomption had an average AQI of 52 based on station measurements. The worst day was 2026-05-24 with AQI 70.

How is L'Assomption air quality measured?

Air quality in L'Assomption 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'Assomption, Canada

Name: L'Assomption 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'Assomption, Canada.

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

167h

PM2.5 Station

167h · 2 stations

Temperature GFS model

27pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	PM10 avg	Hours	Stations
2026-05-30	39	13–95	10.3 µg/m³	2.7	12h	12
2026-05-29	48	24–67	12.4 µg/m³	11.1	24h	15
2026-05-28	46	17–183	15.0 µg/m³	6.0	24h	10
2026-05-27	54	15–189	19.2 µg/m³	2.7	24h	13
2026-05-26	67	23–221	25.0 µg/m³	7.5	24h	13
2026-05-25	58	18–157	17.5 µg/m³	3.6	23h	11
2026-05-24	70	18–119	22.2 µg/m³	7.7	24h	13
2026-05-23	41	11–104	12.2 µg/m³	5.7	12h	10

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