What is the air quality trend in Port Colborne?

Over the past 8 days, Port Colborne had an average AQI of 41 based on station measurements. The worst day was 2026-07-21 with AQI 71.

How is Port Colborne air quality measured?

Air quality in Port Colborne 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 Port Colborne, Canada

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

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

Current AQI
Moderate CAMS model

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

151h

PM2.5 Station

151h · 2 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-07-21	71	28–195	28.3 µg/m³	15h	2
2026-07-20	49	21–114	13.6 µg/m³	20h	2
2026-07-19	34	7–92	8.8 µg/m³	22h	2
2026-07-18	29	14–67	7.2 µg/m³	23h	2
2026-07-17	41	5–194	14.7 µg/m³	23h	2
2026-07-16	39	15–165	11.9 µg/m³	24h	2
2026-07-15	39	12–76	10.0 µg/m³	22h	2
2026-07-14	28	12–44	6.8 µg/m³	2h	2

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