West Alliston
No need to modify usual outdoor activities unless you experience symptoms such as coughing or throat irritation.
West Alliston Live Precipitation Radar
Full Screen ViewWest Alliston Live Doppler RadarMSC Dual-Pol
West Alliston, ON • Lat: 42.33° N, Lon: 91.67° W • Sweep 10m
West Alliston 30-Year Weather History & Monthly Averages
Explore month-by-month temperatures, annual snowfall in cm, rainy days, and historical record highs and lows.
West Alliston 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 West Alliston, ON
What is the current temperature and conditions in West Alliston?
As of today, the temperature in West Alliston is 20.9°C with partly cloudy. The apparent temperature (feels like) is 24.5°C with relative humidity at 96%.
How does Wind Chill and Humidex affect West Alliston?
During warmer conditions, the Canadian Humidex indicates comfort levels. The current Humidex is 27 (Comfortable).
What is the Air Quality Health Index (AQHI) for West Alliston?
The current AQHI for West Alliston 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 West Alliston 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.