What is the air quality trend in Stratford?

Over the past 7 days, Stratford had an average AQI of 102 based on station measurements. The worst day was 2026-07-16 with AQI 167.

How is Stratford air quality measured?

Air quality in Stratford 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 Stratford, Canada

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

Historical PM2.5 and AQI trend from monitoring stations near Stratford, Canada.

Current AQI
Moderate CAMS model

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

168h

PM2.5 Station

168h · 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	54	24–128	15.5 µg/m³	26.3	24h	3
2026-07-20	50	5–156	14.8 µg/m³	16.3	24h	2
2026-07-19	50	9–142	14.0 µg/m³	18.9	24h	2
2026-07-18	118	57–172	47.5 µg/m³	75.0	24h	2
2026-07-17	157	64–314	84.5 µg/m³	142.3	24h	2
2026-07-16	167	69–320	97.9 µg/m³	145.7	24h	2
2026-07-15	120	10–257	68.8 µg/m³	93.3	24h	2

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