What is the air quality trend in Waterdown?

Over the past 8 days, Waterdown had an average AQI of 61 based on station measurements. The worst day was 2026-06-08 with AQI 69.

How is Waterdown air quality measured?

Air quality in Waterdown 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 Waterdown, Canada

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

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

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

168h

PM2.5 Station

168h · 14 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	PM10 avg	Hours	Stations
2026-06-09	45	18–91	12.7 µg/m³	8.6	8h	8
2026-06-08	69	18–317	27.7 µg/m³	9.4	24h	12
2026-06-07	63	17–151	19.6 µg/m³	7.8	24h	11
2026-06-06	67	13–162	21.3 µg/m³	21.9	24h	10
2026-06-05	64	30–156	19.5 µg/m³	19.9	24h	12
2026-06-04	58	24–107	17.2 µg/m³	8.2	24h	11
2026-06-03	66	26–158	20.7 µg/m³	5.8	24h	12
2026-06-02	56	16–98	16.2 µg/m³	3.8	16h	13

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