Sarnia, Ontario, Canada

Monitoring Station · Sarnia, Canada
22
Good
Air quality is satisfactory. Enjoy outdoor activities.
Last Reading

Nearby Monitoring Stations

GoodModerateUSGUnhealthyVery UnhealthyHazardous
AQI Forecast Calibrated
18 12am
20
22
47 3am
47
47
47 6am
47
47
47 9am
47
47
27 12pm
20
20
— 3pm
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—
— 6pm
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— 9pm
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Station readings
18
22
CAMS model adj -7
25
27
34
54
54
54
54
54
54
54
54
54
34
27
27

Air Quality Trend (24h)

PM2.55.3 µg/m³ ✓ WHO
Good
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Nearby Monitoring Stations

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
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 2026-04-15T03:25 UTC.