Lake Cornwall
No need to modify usual outdoor activities unless you experience symptoms such as coughing or throat irritation.
Lake Cornwall Live Precipitation Radar
Full Screen ViewLake Cornwall Live Doppler RadarMSC Dual-Pol
Lake Cornwall, ON • Lat: 45.84° N, Lon: 78.41° W • Sweep 10m
Lake Cornwall 30-Year Weather History & Monthly Averages
Explore month-by-month temperatures, annual snowfall in cm, rainy days, and historical record highs and lows.
Lake 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 Lake Cornwall, ON
What is the current temperature and conditions in Lake Cornwall?
As of today, the temperature in Lake Cornwall is 15.8°C with overcast. The apparent temperature (feels like) is 15.4°C with relative humidity at 76%.
How does Wind Chill and Humidex affect Lake Cornwall?
During warmer conditions, the Canadian Humidex indicates comfort levels. The current Humidex is 16 (Comfortable).
What is the Air Quality Health Index (AQHI) for Lake Cornwall?
The current AQHI for Lake Cornwall is 4 (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 Lake 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.