Sarnia, Ontario, Canada Air Quality

Monitoring Station · Sarnia, Canada
46
Good
Air quality is satisfactory. Enjoy outdoor activities.
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Nearby Monitoring Stations

GoodModerateUSGUnhealthyVery UnhealthyHazardous
AQI Forecast Calibrated
46 7pm
44
44
44 10pm
42
42
44 1am
44
44
44 4am
44
44
42 7am
42
42
— 10am
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— 1pm
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— 4pm
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CAMS model adj +17
25
27
27
27
25
25
27
27
27
27
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27
25
25
25

Air Quality Forecast (24h)

PM2.511.0 µg/m³ ✓ WHO
Good
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Nearby Monitoring Stations

32
Sarnia, Ontario, Canada
0.0 km PM2.5: 7.7 µg/m³
48
Sarnia, Ontario, Canada
0.0 km PM2.5: 11.5 µg/m³
42
Sarnia, Ontario, Canada
0.0 km PM2.5: 10.1 µg/m³
50
Port Huron, Michigan, USA
5.3 km PM2.5: 12.0 µg/m³
49
Port Huron, Michigan, USA
5.3 km PM2.5: 11.8 µg/m³

Nearby Cities

48 Sarnia 48 Port Huron 47 Mount Clemens 36 Clinton Township 42 Shelby 45 Strathroy 28 Chatham 38 Saint Clair Shores 34 Sterling Heights

Station data from AQICN. AQI forecast from ECMWF CAMS. AQI calculated using US EPA standard. Updated 2026-08-10T22:47 UTC.