Sarnia, Ontario, Canada

Monitoring Station · Sarnia, Canada
18
Good
Air quality is satisfactory. Enjoy outdoor activities.
Last Reading

Nearby Monitoring Stations

GoodModerateUSGUnhealthyVery UnhealthyHazardous
AQI Forecast Calibrated
34 4am
34
18
34 7am
34
34
34 10am
34
14
7 1pm
7
5
5 4pm
5
5
— 7pm
—
—
— 10pm
—
—
— 1am
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Station readings
18
CAMS model adj -20
54
54
54
54
54
54
54
54
34
27
27
25
25
25
25

Air Quality Trend (24h)

PM2.54.3 µg/m³ ✓ WHO
Good
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Nearby Monitoring Stations

30
Sarnia, Ontario, Canada
0.0 km PM2.5: 7.2 µg/m³
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
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
17
Sarnia, Ontario, Canada
0.0 km PM2.5: 4.1 µg/m³
27
Port Huron, Michigan, USA
5.3 km PM2.5: 6.5 µg/m³
25
Port Huron, Michigan, USA
5.3 km PM2.5: 6.0 µg/m³

Nearby Cities

24 Sarnia 25 Port Huron 20 Mount Clemens 23 Clinton Township 17 Shelby 9 Strathroy 28 Chatham 25 Saint Clair Shores 24 Sterling Heights

Station data from AQICN. AQI forecast from ECMWF CAMS. AQI calculated using US EPA standard. Updated 2026-04-15T07:55 UTC.