What is the air quality in Cornwall today?

The current Air Quality Index (AQI) in Cornwall is 23 (Good). PM2.5 concentration is 5.43 µg/m³.

What is the temperature in Cornwall right now?

The current temperature in Cornwall is 16.5°C (feels like 16.5°C). Humidity is 72.9% and wind speed is 48.7 km/h.

Is it safe to go outside in Cornwall?

Air quality is satisfactory. Enjoy outdoor activities. The UV Index is 7.9 (Very High).

Air Quality in Cornwall, Canada

Windy

16.5°C · 72.9% humidity

16.5°

Feels 16.5°

Good

Air quality is satisfactory. Enjoy outdoor activities.

3 stations

Nearby Monitoring Stations

AQI Forecast Calibrated

23 6am

23 9am

21 12pm

21 3pm

21 6pm

21 9pm

23 12am

23 3am

Station readings 39h ago

AQI 21

PM2.5 5.0 µg/m³ · 39h ago

Air Quality Index Trend

48h · 2 stn

View full history →

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.

72.9%

Humidity

48.7 km/h

Wind SW

1012.9 hPa

Pressure

7.9

UV Very High

GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲

5.43 µg/m³

PM10

13.7 µg/m³

050100150200300500

What is the weather forecast for Cornwall?

Temperature & Precipitation

PM2.5 Trend

48h · 2 stations

PM2.55.43 µg/m³ ✓ WHO

Good

PM1013.7 µg/m³

Good

UV INDEX7.9

Very High

Station readings (3 stations within 25 km)

5.43

Median

5.43

Average

4.1

Low

7.2

High

PM2.5 µg/m³ · Model: 6.0 · Bias: +0.6

What is the 7-day forecast for Cornwall?

06-09

26.6° 10.5°

0.94 mm

06-10

16.6° 10.1°

11.69 mm

06-11

24.5° 9.7°

06-12

21.2° 16.0°

1.13 mm

06-13

24.9° 18.6°

5.25 mm

06-14

24.9° 9.4°

3.19 mm

06-15

22.0° 14.8°

11.75 mm

Both models agree Avg diff: 6.4°C

Where are air quality stations near Cornwall?

Cornwall, Ontario, Canada

0.6 km PM2.5: 29.2 µg/m³

Cornwall, Ontario, Canada

0.6 km PM2.5: 32.5 µg/m³

Cornwall, Ontario, Canada

0.6 km PM2.5: 2.2 µg/m³

What cities are near Cornwall?

32 Les Coteaux 32 Salaberry-de-Valleyfield 30 Saint-Lazare 20 Vaudreuil-Dorion 39 Clarence-Rockland 18 Orléans 18 Fallingbrook 20 Gloucester 18 Pierrefonds 18 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 2026-06-09T13:40 UTC.