Sarnia, Ontario, Canada

Monitoring Station · Sarnia, Canada
55
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
Last Reading

Nearby Monitoring Stations

GoodModerateUSGUnhealthyVery UnhealthyHazardous
AQI Forecast Calibrated
14 4am
21
55
25 7am
25
25
23 10am
23
23
23 1pm
25
25
25 4pm
25
—
— 7pm
—
—
— 10pm
—
—
— 1am
—
—
Station readings
14
21
55
CAMS model adj -2
34
34
34
27
27
27
25
25
25
25
27
27
27
27

Air Quality Trend (24h)

PM2.514.0 µg/m³ ✓ WHO
Moderate
View city history →

Nearby Monitoring Stations

53
Sarnia, Ontario, Canada
0.0 km PM2.5: 13.1 µg/m³
51
Port Huron, Michigan, USA
5.3 km PM2.5: 12.1 µg/m³

Nearby Cities

30 Sarnia 37 Port Huron 50 Mount Clemens 48 Clinton Township 52 Shelby 31 Strathroy 59 Chatham 46 Saint Clair Shores 46 Sterling Heights

Station data from AQICN. AQI forecast from ECMWF CAMS. AQI calculated using US EPA standard. Updated 2026-04-13T07:03 UTC.