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 10pm
58
57
57 1am
57
57
55 4am
55
57
57 7am
64
84
84 10am
84
84
— 1pm
—
—
— 4pm
—
—
— 7pm
—
—
Station readings
58
CAMS model adj +30
27
27
27
27
27
27
25
25
27
27
34
54
54
54
54

Air Quality Forecast (24h)

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

Nearby Monitoring Stations

65
Sarnia, Ontario, Canada
0.0 km PM2.5: 18.8 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
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
70
Port Huron, Michigan, USA
5.3 km PM2.5: 21.1 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 2026-08-08T01:30 UTC.