Sarnia, Ontario, Canada

Monitoring Station · Sarnia, Canada
55
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
Last Reading

Nearby Monitoring Stations

GoodModerateUSGUnhealthyVery UnhealthyHazardous
AQI Forecast
55 7pm
37
37
37 10pm
37
37
37 1am
37
50
50 4am
50
50
50 7am
50
—
— 10am
—
—
— 1pm
—
—
— 4pm
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Air Quality Trend (24h)

Nearby Monitoring Stations

50
Sarnia, Ontario, Canada
0.0 km
50
Sarnia, Ontario, Canada
0.0 km
36
Sarnia, Ontario, Canada
0.0 km
48
Port Huron, Michigan, USA
5.3 km
40
Port Huron, Michigan, USA
5.3 km
45
Port Huron, Michigan, USA
5.3 km

Nearby Cities

38 Sarnia 38 Port Huron 37 Mount Clemens 43 Clinton Township 37 Shelby 35 Strathroy 40 Chatham 39 Saint Clair Shores 43 Sterling Heights

Station data from AQICN. AQI forecast from ECMWF CAMS. AQI calculated using US EPA standard. Updated 2026-04-09T22:17 UTC.