Sarnia, Ontario, Canada

Monitoring Station · Sarnia, Canada
25
Good
Air quality is satisfactory. Enjoy outdoor activities.
Last Reading

Nearby Monitoring Stations

GoodModerateUSGUnhealthyVery UnhealthyHazardous
AQI Forecast Calibrated
36 2am
56
56
56 5am
56
56
56 8am
56
56
56 11am
36
29
29 2pm
27
27
— 5pm
—
—
— 8pm
—
—
— 11pm
—
—
CAMS model adj +2
34
54
54
54
54
54
54
54
54
54
34
27
27
25
25

Air Quality Trend (24h)

PM2.56.0 µg/m³ ✓ WHO
Good
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Nearby Monitoring Stations

24
Sarnia, Ontario, Canada
0.0 km PM2.5: 5.8 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
18
Sarnia, Ontario, Canada
0.0 km PM2.5: 4.3 µg/m³
17
Sarnia, Ontario, Canada
0.0 km PM2.5: 4.1 µg/m³
18
Port Huron, Michigan, USA
5.3 km PM2.5: 4.3 µg/m³
27
Port Huron, Michigan, USA
5.3 km PM2.5: 6.5 µg/m³

Nearby Cities

18 Sarnia 19 Port Huron 25 Mount Clemens 29 Clinton Township 23 Shelby 9 Strathroy 26 Chatham 30 Saint Clair Shores 31 Sterling Heights

Station data from AQICN. AQI forecast from ECMWF CAMS. AQI calculated using US EPA standard. Updated 2026-04-15T05:12 UTC.