What is the air quality trend in Thorncliffe Park?

Over the past 8 days, Thorncliffe Park had an average AQI of 47 based on station measurements. The worst day was 2026-05-25 with AQI 72.

How is Thorncliffe Park air quality measured?

Air quality in Thorncliffe Park 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 Thorncliffe Park, Canada

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

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

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

168h

PM2.5 Station

168h · 10 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	47	21–157	14.0 µg/m³	1.8	12h	13
2026-05-29	50	15–128	14.1 µg/m³	12.1	24h	17
2026-05-28	37	15–70	9.5 µg/m³	1.6	24h	15
2026-05-27	47	20–152	12.6 µg/m³	6.1	24h	13
2026-05-26	38	21–74	9.9 µg/m³	6.0	24h	12
2026-05-25	72	27–172	25.5 µg/m³	11.2	24h	14
2026-05-24	52	22–134	14.4 µg/m³	7.1	24h	17
2026-05-23	40	18–86	10.7 µg/m³	3.0	12h	13

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