What is the air quality trend in L'Assomption?

Over the past 8 days, L'Assomption had an average AQI of 51 based on station measurements. The worst day was 2026-05-26 with AQI 69.

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

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	PM10 avg	Hours	Stations
2026-05-30	38	6–91	10.3 µg/m³	2.5	10h	12
2026-05-29	44	6–67	11.5 µg/m³	11.1	24h	13
2026-05-28	37	12–79	9.8 µg/m³	6.0	24h	9
2026-05-27	47	6–189	16.6 µg/m³	2.7	24h	11
2026-05-26	69	20–166	23.1 µg/m³	7.5	24h	12
2026-05-25	61	17–185	21.4 µg/m³	3.6	23h	11
2026-05-24	68	13–130	21.1 µg/m³	7.7	24h	12
2026-05-23	45	8–126	13.3 µg/m³	5.8	14h	9

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