Sarnia, Ontario, Canada

Monitoring Station · Sarnia, Canada
33
Good
Air quality is satisfactory. Enjoy outdoor activities.
Last Reading

Nearby Monitoring Stations

GoodModerateUSGUnhealthyVery UnhealthyHazardous
AQI Forecast Calibrated
75 2pm
41
73
73 5pm
73
75
75 8pm
75
75
75 11pm
75
75
75 2am
82
82
— 5am
—
—
— 8am
—
—
— 11am
—
—
Station readings
41
33
CAMS model adj +48
27
25
25
25
25
27
27
27
27
27
27
27
27
34
34

Air Quality Trend (24h)

PM2.57.9 µg/m³ ✓ WHO
Good
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Nearby Monitoring Stations

24
Sarnia, Ontario, Canada
0.0 km PM2.5: 5.8 µg/m³
24
Sarnia, Ontario, Canada
0.0 km PM2.5: 5.8 µg/m³
33
Port Huron, Michigan, USA
5.3 km PM2.5: 7.9 µg/m³
36
Port Huron, Michigan, USA
5.3 km PM2.5: 8.6 µg/m³

Nearby Cities

27 Sarnia 28 Port Huron 16 Mount Clemens 16 Clinton Township 16 Shelby 35 Strathroy 33 Chatham 17 Saint Clair Shores 15 Sterling Heights

Station data from AQICN. AQI forecast from ECMWF CAMS. AQI calculated using US EPA standard. Updated 2026-04-15T17:47 UTC.