What is the air quality in Cornwall today?

The current Air Quality Index (AQI) in Cornwall is 22 (Good). PM2.5 concentration is 5.3 µg/m³.

What is the temperature in Cornwall right now?

The current temperature in Cornwall is 1.3°C (feels like -1.6°C). Humidity is 54.8% and wind speed is 9.4 km/h.

Is it safe to go outside in Cornwall?

Air quality is satisfactory. Enjoy outdoor activities. The UV Index is 0.0 (Low).

Air Quality in Cornwall, Canada

Partly Cloudy

1.3°C · 54.8% humidity

1.3°

Feels -1.6°

Good

Air quality is satisfactory. Enjoy outdoor activities.

1 station

Nearby Monitoring Stations

AQI Forecast

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Station readings

Air Quality Index Trend

47h · 1 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.

54.8%

Humidity

9.4 km/h

Wind W

1030.2 hPa

Pressure

0.0

UV Low

GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5

5.3 µg/m³

PM10▲

27.4 µg/m³

050100150200300500

What is the weather forecast for Cornwall?

Temperature & Precipitation

PM2.5 Trend

47h · 1 station

PM2.55.3 µg/m³ ✓ WHO

Good

PM1027.4 µg/m³

Good

UV INDEX0.0

Low

Station readings (1 station within 25 km)

5.3

Median

5.3

Average

5.3

Low

5.3

High

PM2.5 µg/m³ · Model: 13.5 · Bias: +8.2

What is the 7-day forecast for Cornwall?

10-20

6.8° 3.5°

0.5 mm

10-21

15.4° 1.3°

10-22

14.2° 2.4°

3.19 mm

10-23

12.3° 5.7°

3.5 mm

10-24

17.3° 1.5°

0.19 mm

10-25

12.6° 8.7°

19.06 mm

10-26

10.0° 3.1°

0.06 mm

Both models agree Avg diff: 4.8°C

Where are air quality stations near Cornwall?

Cornwall, Ontario, Canada

0.6 km PM2.5: 5.3 µg/m³

Cornwall, Ontario, Canada

0.6 km PM2.5: 8.2 µg/m³

Cornwall, Ontario, Canada

0.6 km PM2.5: 7.2 µg/m³

Cornwall, Ontario, Canada

0.6 km PM2.5: 4.1 µg/m³

Cornwall, Ontario, Canada

0.6 km PM2.5: 5.3 µg/m³

Cornwall, Ontario, Canada

0.6 km PM2.5: 5.8 µg/m³

What cities are near Cornwall?

10 Les Coteaux 11 Salaberry-de-Valleyfield 8 Saint-Lazare 18 Vaudreuil-Dorion 24 Clarence-Rockland 25 Orléans 25 Fallingbrook 25 Gloucester 24 Pierrefonds 24 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 2026-10-20T22:41 UTC.