Sarnia, Ontario, Canada

Monitoring Station · Sarnia, Canada
24
Good
Air quality is satisfactory. Enjoy outdoor activities.
Last Reading

Nearby Monitoring Stations

GoodModerateUSGUnhealthyVery UnhealthyHazardous
AQI Forecast
25 12am
24
34
54 3am
54
54
54 6am
54
54
54 9am
54
54
34 12pm
27
27
— 3pm
—
—
— 6pm
—
—
— 9pm
—
—
Station readings
24
CAMS model
25
27
34
54
54
54
54
54
54
54
54
54
34
27
27

Air Quality Trend (24h)

PM2.55.8 µg/m³ ✓ WHO
Good
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Nearby Monitoring Stations

22
Sarnia, Ontario, Canada
0.0 km PM2.5: 5.3 µg/m³
25
Sarnia, Ontario, Canada
0.0 km PM2.5: 6.0 µg/m³
24
Sarnia, Ontario, Canada
0.0 km PM2.5: 5.8 µg/m³
18
Sarnia, Ontario, Canada
0.0 km PM2.5: 4.3 µg/m³
18
Port Huron, Michigan, USA
5.3 km PM2.5: 4.3 µg/m³
26
Port Huron, Michigan, USA
5.3 km PM2.5: 6.2 µg/m³
23
Port Huron, Michigan, USA
5.3 km PM2.5: 5.5 µg/m³

Nearby Cities

21 Sarnia 22 Port Huron 18 Mount Clemens 23 Clinton Township 13 Shelby 9 Strathroy 30 Chatham 27 Saint Clair Shores 26 Sterling Heights

Station data from AQICN. AQI forecast from ECMWF CAMS. AQI calculated using US EPA standard. Updated 2026-04-15T03:56 UTC.