What is the air quality trend in Weston?

Over the past 8 days, Weston had an average AQI of 94 based on station measurements. The worst day was 2026-07-18 with AQI 149.

How is Weston air quality measured?

Air quality in Weston 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 Weston, Canada

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

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

Current AQI
Good Station

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	99	13–127	34.7 µg/m³	44.0	21h	2
2026-07-20	36	8–123	10.9 µg/m³	12.6	24h	2
2026-07-19	69	13–154	23.0 µg/m³	26.0	24h	1
2026-07-18	149	36–192	79.5 µg/m³	84.2	24h	1
2026-07-17	116	41–163	45.3 µg/m³	50.4	24h	2
2026-07-16	139	89–179	61.0 µg/m³	69.0	24h	2
2026-07-15	96	23–164	35.5 µg/m³	38.1	24h	2
2026-07-14	51	49–53	12.4 µg/m³	12.6	3h	1

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