Lake Sarnia
No need to modify usual outdoor activities unless you experience symptoms such as coughing or throat irritation.
Lake Sarnia Live Precipitation Radar
Full Screen ViewLake Sarnia Live Doppler RadarMSC Dual-Pol
Lake Sarnia, ON • Lat: 50.54° N, Lon: 82.06° W • Sweep 10m
Lake Sarnia 30-Year Weather History & Monthly Averages
Explore month-by-month temperatures, annual snowfall in cm, rainy days, and historical record highs and lows.
Lake Sarnia 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 Sarnia, ON
What is the current temperature and conditions in Lake Sarnia?
As of today, the temperature in Lake Sarnia is 13.5°C with partly cloudy. The apparent temperature (feels like) is 10.2°C with relative humidity at 55%.
How does Wind Chill and Humidex affect Lake Sarnia?
During warmer conditions, the Canadian Humidex indicates comfort levels. The current Humidex is 14 (Comfortable).
What is the Air Quality Health Index (AQHI) for Lake Sarnia?
The current AQHI for Lake Sarnia 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 Sarnia 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.