Sarnia, Ontario, Canada Air Quality

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

GoodModerateUSGUnhealthyVery UnhealthyHazardous
AQI Forecast Calibrated
55 9pm
36
36
36 12am
36
36
36 3am
34
34
36 6am
36
43
63 9am
63
63
— 12pm
—
—
— 3pm
—
—
— 6pm
—
—
CAMS model adj +9
27
27
27
27
27
27
27
25
25
27
27
34
54
54
54

Air Quality Forecast (24h)

PM2.514.0 µg/m³ ✓ WHO
Moderate
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Nearby Monitoring Stations

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
58
Sarnia, Ontario, Canada
0.0 km PM2.5: 15.4 µg/m³
42
Sarnia, Ontario, Canada
0.0 km PM2.5: 10.1 µg/m³
62
Sarnia, Ontario, Canada
0.0 km PM2.5: 17.3 µg/m³
69
Port Huron, Michigan, USA
5.3 km PM2.5: 20.7 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 2026-08-08T00:41 UTC.