Junction St. Thomas
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Junction St. Thomas Live Precipitation Radar
Full Screen ViewJunction St. Thomas Live Doppler RadarMSC Dual-Pol
Junction St. Thomas, ON • Lat: 43.49° N, Lon: 85.78° W • Sweep 10m
Junction 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.
Junction 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 Junction St. Thomas, ON
What is the current temperature and conditions in Junction St. Thomas?
As of today, the temperature in Junction St. Thomas is 19.7°C with overcast. The apparent temperature (feels like) is 20.7°C with relative humidity at 83%.
How does Wind Chill and Humidex affect Junction St. Thomas?
During warmer conditions, the Canadian Humidex indicates comfort levels. The current Humidex is 20 (Comfortable).
What is the Air Quality Health Index (AQHI) for Junction St. Thomas?
The current AQHI for Junction St. Thomas 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 Junction 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.