Sarnia, Ontario, Canada Air Quality

Monitoring Station · Sarnia, Canada
62
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
Last Reading

Nearby Monitoring Stations

GoodModerateUSGUnhealthyVery UnhealthyHazardous
AQI Forecast Calibrated
31 11pm
62
31
31 2am
31
29
29 5am
31
31
38 8am
58
58
58 11am
58
29
— 2pm
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— 5pm
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Station readings
62
CAMS model adj +4
27
27
27
27
27
25
25
27
27
34
54
54
54
54
25

Air Quality Forecast (24h)

PM2.517.3 µg/m³ ×1.2 WHO
Moderate
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Nearby Monitoring Stations

65
Sarnia, Ontario, Canada
0.0 km PM2.5: 18.8 µg/m³
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
55
Sarnia, Ontario, Canada
0.0 km PM2.5: 14.0 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
53
Port Huron, Michigan, USA
5.3 km PM2.5: 13.1 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 2026-08-08T02:36 UTC.