Sarnia, Ontario, Canada

Monitoring Station · Sarnia, Canada
25
Good
Air quality is satisfactory. Enjoy outdoor activities.
Last Reading

Nearby Monitoring Stations

GoodModerateUSGUnhealthyVery UnhealthyHazardous
AQI Forecast Calibrated
246 4am
70
34
25 7am
90
90
70 10am
70
63
90 1pm
70
63
61 4pm
61
—
— 7pm
—
—
— 10pm
—
—
— 1am
—
—
Station readings
246
34
25
CAMS model adj +36
34
34
54
54
54
54
34
34
27
54
34
27
25
25

Air Quality Trend (24h)

PM2.56.0 µg/m³ ✓ WHO
Good
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Nearby Monitoring Stations

21
Sarnia, Ontario, Canada
0.0 km PM2.5: 5.0 µg/m³
21
Sarnia, Ontario, Canada
0.0 km PM2.5: 5.0 µg/m³
22
Port Huron, Michigan, USA
5.3 km PM2.5: 5.3 µg/m³
27
Port Huron, Michigan, USA
5.3 km PM2.5: 6.5 µg/m³

Nearby Cities

28 Sarnia 28 Port Huron 21 Mount Clemens 21 Clinton Township 21 Shelby 30 Strathroy 20 Chatham 23 Saint Clair Shores 20 Sterling Heights

Station data from AQICN. AQI forecast from ECMWF CAMS. AQI calculated using US EPA standard. Updated 2026-04-16T07:00 UTC.