Air Quality in Cornwall, Canada

Drizzle
15.6°C · 97.7% humidity
15.6°
Feels 15.6°
21
Good
Air quality is satisfactory. Enjoy outdoor activities.
2 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
20 5am
20
20
21 8am
20
20
20 11am
20
20
20 2pm
20
20
20 5pm
20
20
20 8pm
20
20
20 11pm
20
20
20 2am
20
20
Station readings
17
21
CAMS model adj -4
24
24
24
24
24
24
24
24
24
24
24
24
24
24
24
24
24
24
24
24
24
24
24
24
AD 728×90

Air Quality Index Trend

43h · 1 stn

Cornwall's air quality is primarily affected by vehicle emissions and industrial activity. Seasonal wildfire smoke and weather patterns can cause periodic air quality deterioration.

97.7%
Humidity
42.7 km/h
Wind NE
1009.5 hPa
Pressure
1.4
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
21
5.0 µg/m³
PM10
13
13.7 µg/m³
050100150200300500

What is the weather forecast for Cornwall?

Temperature & Precipitation

PM2.5 Trend

43h · 1 station
PM2.55.0 µg/m³ ✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX1.4
Low
AD 300×250
Station readings (2 stations within 25 km)
5.0
Median
5.0
Average
5.0
Low
5.0
High
PM2.5 µg/m³ · Model: 5.8 · Bias: +0.8
Both models agree Avg diff: 4.2°C

Where are air quality stations near Cornwall?

21
Cornwall, Ontario, Canada
0.6 km PM2.5: 5.0 µg/m³
17
Cornwall, Ontario, Canada
0.6 km PM2.5: 4.1 µg/m³
17
Cornwall, Ontario, Canada
0.6 km PM2.5: 4.1 µg/m³

What cities are near Cornwall?

25 Les Coteaux 25 Salaberry-de-Valleyfield 23 Saint-Lazare 17 Vaudreuil-Dorion 17 Clarence-Rockland 10 Orléans 10 Fallingbrook 9 Gloucester 14 Pierrefonds 14 Beaconsfield
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Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-09-05T12:10 UTC.