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
51 1am
44
44
53 4am
42
44
44 7am
51
71
71 10am
71
71
42 1pm
42
42
— 4pm
—
—
— 7pm
—
—
— 10pm
—
—
Station readings
51
53
CAMS model adj +17
27
27
27
25
25
27
27
34
54
54
54
54
25
25
25

Air Quality Forecast (24h)

PM2.513.1 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
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
55
Port Huron, Michigan, USA
5.3 km PM2.5: 14.0 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 2026-08-08T04:36 UTC.