What is the air quality trend in Pierrefonds-Roxboro?

Over the past 8 days, Pierrefonds-Roxboro had an average AQI of 55 based on station measurements. The worst day was 2026-07-14 with AQI 109.

How is Pierrefonds-Roxboro air quality measured?

Air quality in Pierrefonds-Roxboro 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 Pierrefonds-Roxboro, Canada

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

Historical PM2.5 and AQI trend from monitoring stations near Pierrefonds-Roxboro, Canada.

Current AQI
Moderate 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
2026-07-21	57	28–90	16.2 µg/m³	13.3	22h	2
2026-07-20	36	14–56	8.7 µg/m³	6.5	24h	2
2026-07-19	45	7–154	14.3 µg/m³	12.1	24h	2
2026-07-18	58	17–167	20.9 µg/m³	17.2	24h	2
2026-07-17	16	4–32	3.8 µg/m³	2.8	24h	2
2026-07-16	42	5–71	10.9 µg/m³	9.4	24h	2
2026-07-15	82	14–148	27.5 µg/m³	23.3	24h	2
2026-07-14	109	109–109	38.8 µg/m³	34.3	1h	2

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