South Cornwall
No need to modify usual outdoor activities unless you experience symptoms such as coughing or throat irritation.
South Cornwall Live Precipitation Radar
Full Screen ViewSouth Cornwall Live Doppler RadarMSC Dual-Pol
South Cornwall, ON • Lat: 46.54° N, Lon: 92.40° W • Sweep 10m
South Cornwall 30-Year Weather History & Monthly Averages
Explore month-by-month temperatures, annual snowfall in cm, rainy days, and historical record highs and lows.
South Cornwall Air Quality & Wildfire Smoke Report
Detailed Canadian AQHI breakdown, fine particulate matter (PM2.5), ground-level ozone, and health guidance.
Frequently Asked Questions About Weather in South Cornwall, ON
What is the current temperature and conditions in South Cornwall?
As of today, the temperature in South Cornwall is 14.7°C with overcast. The apparent temperature (feels like) is 15.5°C with relative humidity at 89%.
How does Wind Chill and Humidex affect South Cornwall?
During warmer conditions, the Canadian Humidex indicates comfort levels. The current Humidex is 15 (Comfortable).
What is the Air Quality Health Index (AQHI) for South Cornwall?
The current AQHI for South Cornwall is 5 (Moderate Risk). It is calculated based on ground-level ozone, fine particulate matter (PM2.5), and nitrogen dioxide levels according to Health Canada standards.
Where does the meteorological data for South Cornwall come from?
Forecasts are generated using high-resolution Canadian Deterministic Prediction System (HRDPS 2.5km) and Global Environmental Multiscale (GEM) models alongside official Environment and Climate Change Canada Doppler radar feeds.