Sarnia, Ontario, Canada Air Quality

Monitoring Station · Sarnia, Canada
50
Good
Air quality is satisfactory. Enjoy outdoor activities.
Last Reading

Nearby Monitoring Stations

GoodModerateUSGUnhealthyVery UnhealthyHazardous
AQI Forecast Calibrated
37 12am
43
39
50 3am
39
39
39 6am
37
37
37 9am
37
36
36 12pm
36
36
— 3pm
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— 6pm
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— 9pm
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Station readings
43
50
CAMS model adj +12
25
27
27
27
27
27
27
25
25
25
25
24
24
24
24

Air Quality Forecast (24h)

PM2.512.0 µg/m³ ✓ WHO
Good
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Nearby Monitoring Stations

50
Sarnia, Ontario, Canada
0.0 km PM2.5: 12.0 µg/m³
32
Sarnia, Ontario, Canada
0.0 km PM2.5: 7.7 µg/m³
48
Sarnia, Ontario, Canada
0.0 km PM2.5: 11.5 µg/m³
50
Port Huron, Michigan, USA
5.3 km PM2.5: 12.0 µg/m³
43
Port Huron, Michigan, USA
5.3 km PM2.5: 10.3 µg/m³
51
Port Huron, Michigan, USA
5.3 km PM2.5: 12.1 µg/m³
56
Port Huron, Michigan, USA
5.3 km PM2.5: 14.5 µg/m³

Nearby Cities

48 Sarnia 48 Port Huron 47 Mount Clemens 36 Clinton Township 42 Shelby 45 Strathroy 28 Chatham 38 Saint Clair Shores 34 Sterling Heights

Station data from AQICN. AQI forecast from ECMWF CAMS. AQI calculated using US EPA standard. Updated 2026-08-11T03:40 UTC.