What is the air quality trend in Rouyn-Noranda?

Over the past 7 days, Rouyn-Noranda had an average AQI of 72 based on station measurements. The worst day was 2026-07-18 with AQI 108.

How is Rouyn-Noranda air quality measured?

Air quality in Rouyn-Noranda 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 Rouyn-Noranda, Canada

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

Historical PM2.5 and AQI trend from monitoring stations near Rouyn-Noranda, Canada.

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

167h

PM2.5 Station

167h · 1 station

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-07-21	103	2–157	37.4 µg/m³	24h	1
2026-07-20	98	47–158	34.4 µg/m³	24h	1
2026-07-19	50	24–77	12.9 µg/m³	24h	1
2026-07-18	108	42–176	43.5 µg/m³	24h	1
2026-07-17	27	12–52	6.4 µg/m³	24h	1
2026-07-16	40	3–71	10.8 µg/m³	24h	1
2026-07-15	78	54–120	24.9 µg/m³	23h	1

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