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 Calibrated
33 11pm
24
35
42 2am
62
62
62 5am
62
62
62 8am
62
62
62 11am
42
35
— 2pm
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—
— 5pm
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— 8pm
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Station readings
24
CAMS model adj +8
25
25
27
34
54
54
54
54
54
54
54
54
54
34
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
24
Sarnia, Ontario, Canada
0.0 km PM2.5: 5.8 µg/m³
25
Sarnia, Ontario, Canada
0.0 km PM2.5: 6.0 µg/m³
34
Sarnia, Ontario, Canada
0.0 km PM2.5: 8.2 µg/m³
23
Port Huron, Michigan, USA
5.3 km PM2.5: 5.5 µg/m³
18
Port Huron, Michigan, USA
5.3 km PM2.5: 4.3 µg/m³

Nearby Cities

23 Sarnia 22 Port Huron 18 Mount Clemens 21 Clinton Township 13 Shelby 10 Strathroy 33 Chatham 24 Saint Clair Shores 23 Sterling Heights

Station data from AQICN. AQI forecast from ECMWF CAMS. AQI calculated using US EPA standard. Updated 2026-04-15T02:25 UTC.