Sarnia, Ontario, Canada Air Quality

Monitoring Station · Sarnia, Canada
58
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
Last Reading

Nearby Monitoring Stations

GoodModerateUSGUnhealthyVery UnhealthyHazardous
AQI Forecast Calibrated
57 9pm
57
58
57 12am
57
57
57 3am
55
55
57 6am
57
64
84 9am
84
84
— 12pm
—
—
— 3pm
—
—
— 6pm
—
—
Station readings
58
CAMS model adj +30
27
27
27
27
27
27
27
25
25
27
27
34
54
54
54

Air Quality Forecast (24h)

PM2.515.4 µg/m³ ✓ WHO
Moderate
View city history →

Nearby Monitoring Stations

55
Sarnia, Ontario, Canada
0.0 km PM2.5: 14.0 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
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.