What is the air quality trend in Sault Ste. Marie?

Over the past 21 days, Sault Ste. Marie had an average AQI of 19 based on station measurements. The worst day was 2026-10-11 with AQI 31.

How is Sault Ste. Marie air quality measured?

Air quality in Sault Ste. Marie 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 Sault Ste. Marie, Canada

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

Historical PM2.5 and AQI trend from monitoring stations near Sault Ste. Marie, Canada.

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

452h

PM2.5 Station

452h · 1 station

Temperature GFS model

79pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-10-21	21	20–22	5.0 µg/m³	5h	1
2026-10-20	21	9–26	5.1 µg/m³	22h	1
2026-10-19	24	10–32	5.7 µg/m³	22h	1
2026-10-18	22	5–31	5.3 µg/m³	22h	1
2026-10-17	18	9–26	4.2 µg/m³	23h	1
2026-10-16	16	14–18	3.7 µg/m³	18h	1
2026-10-15	14	9–19	3.4 µg/m³	24h	1
2026-10-14	14	10–18	3.4 µg/m³	24h	1
2026-10-13	9	6–11	2.1 µg/m³	22h	1
2026-10-12	20	8–37	4.9 µg/m³	23h	1
2026-10-11	31	23–39	7.5 µg/m³	24h	1
2026-10-10	17	10–29	4.0 µg/m³	23h	1
2026-10-09	17	13–22	4.0 µg/m³	22h	1
2026-10-08	25	20–30	6.1 µg/m³	22h	1
2026-10-07	25	20–39	6.0 µg/m³	24h	1
2026-10-06	14	7–24	3.5 µg/m³	23h	1
2026-10-05	24	22–26	5.8 µg/m³	21h	1
2026-10-04	19	17–24	4.6 µg/m³	24h	1
2026-10-03	11	5–20	2.7 µg/m³	24h	1
2026-10-02	18	10–26	4.2 µg/m³	24h	1
2026-10-01	24	14–34	5.9 µg/m³	16h	1

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