Sarnia, Ontario, Canada Air Quality

Monitoring Station · Sarnia, Canada
53
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
Last Reading

Nearby Monitoring Stations

GoodModerateUSGUnhealthyVery UnhealthyHazardous
AQI Forecast Calibrated
93 3am
91
53
93 6am
93
100
120 9am
120
120
120 12pm
91
91
91 3pm
90
91
— 6pm
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—
— 9pm
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— 12am
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Station readings
53
CAMS model adj +66
27
25
25
27
27
34
54
54
54
54
25
25
25
24
25

Air Quality Forecast (24h)

PM2.513.1 µg/m³ ✓ WHO
Moderate
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Nearby Monitoring Stations

53
Sarnia, Ontario, Canada
0.0 km PM2.5: 13.1 µg/m³
14
Sarnia, Ontario, Canada
0.0 km PM2.5: 3.4 µg/m³
42
Sarnia, Ontario, Canada
0.0 km PM2.5: 10.1 µg/m³
55
Sarnia, Ontario, Canada
0.0 km PM2.5: 14.0 µg/m³
58
Sarnia, Ontario, Canada
0.0 km PM2.5: 15.4 µg/m³
53
Sarnia, Ontario, Canada
0.0 km PM2.5: 13.1 µg/m³
53
Port Huron, Michigan, USA
5.3 km PM2.5: 13.1 µg/m³

Nearby Cities

53 Sarnia 53 Port Huron 31 Mount Clemens 31 Clinton Township 31 Shelby 38 Strathroy 42 Chatham 59 Saint Clair Shores 42 Sterling Heights

Station data from AQICN. AQI forecast from ECMWF CAMS. AQI calculated using US EPA standard. Updated 2026-08-08T06:57 UTC.