What is the air quality trend in Mississauga?

Over the past 8 days, Mississauga had an average AQI of 110 based on station measurements. The worst day was 2026-07-16 with AQI 198.

How is Mississauga air quality measured?

Air quality in Mississauga 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 Mississauga, Canada

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

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

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

168h

PM2.5 Station

168h · 1 station

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	95	16–129	33.0 µg/m³	39.3	23h	1
2026-07-20	42	14–127	12.7 µg/m³	14.1	24h	1
2026-07-19	70	14–154	23.3 µg/m³	26.2	24h	1
2026-07-18	149	36–192	79.5 µg/m³	84.2	24h	1
2026-07-17	155	63–235	92.7 µg/m³	100.3	24h	2
2026-07-16	198	147–324	127.5 µg/m³	135.1	24h	2
2026-07-15	126	50–185	56.6 µg/m³	59.7	24h	2
2026-07-14	49	49–49	11.8 µg/m³	12.0	1h	1

Back to Mississauga Air Quality