Air Quality in Cornwall, Canada

Windy
20.4°C · 46.6% humidity
20.4°
Feels 20.4°
32
Good
Air quality is satisfactory. Enjoy outdoor activities.
2 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
33 4pm
33
33
32 7pm
35
35
42 10pm
42
42
42 1am
35
35
35 4am
35
35
35 7am
35
32
32 10am
32
32
32 1pm
32
32
Station readings
32
32
33
34
CAMS model adj +8
25
25
25
25
27
27
34
34
34
34
27
27
27
27
27
27
27
24
24
24
24
24
24
24
AD 728×90

Air Quality Index Trend

25h · 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.

46.6%
Humidity
53.1 km/h
Wind W
1012.1 hPa
Pressure
2.2
UV Moderate
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
32
7.7 µg/m³
PM10
19
20.55 µg/m³
050100150200300500

What is the weather forecast for Cornwall?

Temperature & Precipitation

PM2.5 Trend

25h · 1 station
PM2.57.7 µg/m³ ✓ WHO
Good
PM1020.55 µg/m³
Good
UV INDEX2.2
Moderate
AD 300×250
Station readings (2 stations within 25 km)
7.7
Median
7.7
Average
7.7
Low
7.7
High
PM2.5 µg/m³ · Model: 9.75 · Bias: +2.0

What is the 7-day forecast for Cornwall?

08-03
24.5° 16.3°
0.25 mm
08-04
25.2° 15.9°
2.44 mm
08-05
29.6° 13.2°
0.13 mm
08-06
26.5° 17.4°
4.06 mm
08-07
26.8° 15.6°
08-08
22.7° 17.7°
1.13 mm
08-09
32.7° 18.8°
2.25 mm
Both models agree Avg diff: 3.9°C

Where are air quality stations near Cornwall?

51
Cornwall, Ontario, Canada
0.6 km PM2.5: 12.1 µg/m³
32
Cornwall, Ontario, Canada
0.6 km PM2.5: 7.7 µg/m³
34
Cornwall, Ontario, Canada
0.6 km PM2.5: 8.2 µg/m³
32
Cornwall, Ontario, Canada
0.6 km PM2.5: 7.7 µg/m³
33
Cornwall, Ontario, Canada
0.6 km PM2.5: 7.9 µg/m³
34
Cornwall, Ontario, Canada
0.6 km PM2.5: 8.2 µg/m³
34
Cornwall, Ontario, Canada
0.6 km PM2.5: 8.2 µg/m³
34
Cornwall, Ontario, Canada
0.6 km PM2.5: 8.2 µg/m³

What cities are near Cornwall?

82 Les Coteaux 82 Salaberry-de-Valleyfield 82 Saint-Lazare 82 Vaudreuil-Dorion 40 Clarence-Rockland 49 Orléans 50 Fallingbrook 47 Gloucester 70 Pierrefonds 69 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 2026-08-07T23:45 UTC.