What is the air quality trend in Steeles?

Over the past 7 days, Steeles had an average AQI of 75 based on station measurements. The worst day was 2026-07-18 with AQI 109.

How is Steeles air quality measured?

Air quality in Steeles 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 Steeles, Canada

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

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

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

107h

PM2.5 Station

107h · 4 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	91	8–127	31.9 µg/m³	43.5	23h	1
2026-07-20	36	1–120	10.7 µg/m³	14.3	16h	1
2026-07-19	42	12–161	15.2 µg/m³	4.4	7h	2
2026-07-18	109	31–172	53.1 µg/m³	—	4h	4
2026-07-17	75	1–121	25.1 µg/m³	30.0	15h	1
2026-07-16	107	71–151	37.5 µg/m³	45.6	24h	1
2026-07-15	66	11–114	21.8 µg/m³	24.8	18h	1

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