Sarnia, Ontario, Canada Air Quality

Monitoring Station · Sarnia, Canada
53
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
Last Reading

Nearby Monitoring Stations

GoodModerateUSGUnhealthyVery UnhealthyHazardous
AQI Forecast Calibrated
52 2am
52
53
50 5am
52
52
59 8am
79
79
79 11am
79
50
50 2pm
50
49
— 5pm
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—
— 8pm
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— 11pm
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Station readings
53
CAMS model adj +25
27
27
25
25
27
27
34
54
54
54
54
25
25
25
24

Air Quality Forecast (24h)

PM2.513.1 µg/m³ ✓ WHO
Moderate
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Nearby Monitoring Stations

14
Sarnia, Ontario, Canada
0.0 km PM2.5: 3.4 µg/m³
42
Sarnia, Ontario, Canada
0.0 km PM2.5: 10.1 µg/m³
53
Sarnia, Ontario, Canada
0.0 km PM2.5: 13.1 µg/m³
42
Sarnia, Ontario, Canada
0.0 km PM2.5: 10.1 µg/m³
55
Sarnia, Ontario, Canada
0.0 km PM2.5: 14.0 µg/m³
58
Sarnia, Ontario, Canada
0.0 km PM2.5: 15.4 µg/m³
13
Port Huron, Michigan, USA
5.3 km PM2.5: 3.1 µg/m³

Nearby Cities

53 Sarnia 53 Port Huron 31 Mount Clemens 31 Clinton Township 31 Shelby 38 Strathroy 42 Chatham 59 Saint Clair Shores 42 Sterling Heights

Station data from AQICN. AQI forecast from ECMWF CAMS. AQI calculated using US EPA standard. Updated 2026-08-08T05:29 UTC.