Sarnia, Ontario, Canada

Monitoring Station · Sarnia, Canada
30
Good
Air quality is satisfactory. Enjoy outdoor activities.
Last Reading

Nearby Monitoring Stations

GoodModerateUSGUnhealthyVery UnhealthyHazardous
AQI Forecast Calibrated
58 1am
58
30
67 4am
87
87
87 7am
87
87
87 10am
87
87
67 1pm
60
—
— 4pm
—
—
— 7pm
—
—
— 10pm
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Station readings
30
CAMS model adj +33
25
25
27
34
54
54
54
54
54
54
54
54
34
27

Air Quality Trend (24h)

PM2.57.2 µg/m³ ✓ WHO
Good
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Nearby Monitoring Stations

30
Sarnia, Ontario, Canada
0.0 km PM2.5: 7.2 µg/m³
29
Port Huron, Michigan, USA
5.3 km PM2.5: 7.0 µg/m³
29
Port Huron, Michigan, USA
5.3 km PM2.5: 7.0 µg/m³
29
Port Huron, Michigan, USA
5.3 km PM2.5: 7.0 µg/m³

Nearby Cities

30 Sarnia 30 Port Huron 16 Mount Clemens 19 Clinton Township 13 Shelby 36 Strathroy 34 Chatham 22 Saint Clair Shores 20 Sterling Heights

Station data from AQICN. AQI forecast from ECMWF CAMS. AQI calculated using US EPA standard. Updated 2026-04-18T04:12 UTC.