Sunny St. Thomas
Ideal air quality for outdoor Canadian activities and sports.
Sunny St. Thomas Live Precipitation Radar
Full Screen ViewSunny St. Thomas Live Doppler RadarMSC Dual-Pol
Sunny St. Thomas, ON • Lat: 51.06° N, Lon: 75.28° W • Sweep 10m
Sunny St. Thomas 30-Year Weather History & Monthly Averages
Explore month-by-month temperatures, annual snowfall in cm, rainy days, and historical record highs and lows.
Sunny St. Thomas 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 Sunny St. Thomas, ON
What is the current temperature and conditions in Sunny St. Thomas?
As of today, the temperature in Sunny St. Thomas is 10.6°C with overcast. The apparent temperature (feels like) is 8.4°C with relative humidity at 82%.
How does Wind Chill and Humidex affect Sunny St. Thomas?
During warmer conditions, the Canadian Humidex indicates comfort levels. The current Humidex is 11 (Comfortable).
What is the Air Quality Health Index (AQHI) for Sunny St. Thomas?
The current AQHI for Sunny St. Thomas is 3 (Low 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 Sunny St. Thomas 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.