What is the air quality trend in Thorncliffe Park?

Over the past 8 days, Thorncliffe Park had an average AQI of 48 based on station measurements. The worst day was 2026-05-25 with AQI 67.

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

167h

PM2.5 Station

167h · 14 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	41	26–81	10.9 µg/m³	1.9	9h	11
2026-05-29	51	14–153	15.1 µg/m³	12.1	24h	13
2026-05-28	34	19–92	8.6 µg/m³	1.6	24h	13
2026-05-27	54	22–160	16.1 µg/m³	6.1	24h	13
2026-05-26	43	17–84	11.2 µg/m³	6.0	24h	11
2026-05-25	67	27–157	20.6 µg/m³	11.2	24h	14
2026-05-24	41	20–77	10.6 µg/m³	7.1	24h	13
2026-05-23	56	23–88	15.7 µg/m³	3.1	14h	15

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