Old Catharines
Ideal air quality for outdoor Canadian activities and sports.
Old Catharines Live Precipitation Radar
Full Screen ViewOld Catharines Live Doppler RadarMSC Dual-Pol
Old Catharines, ON • Lat: 45.28° N, Lon: 84.72° W • Sweep 10m
Old Catharines 30-Year Weather History & Monthly Averages
Explore month-by-month temperatures, annual snowfall in cm, rainy days, and historical record highs and lows.
Old Catharines 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 Old Catharines, ON
What is the current temperature and conditions in Old Catharines?
As of today, the temperature in Old Catharines is 17°C with clear sky. The apparent temperature (feels like) is 16.7°C with relative humidity at 69%.
How does Wind Chill and Humidex affect Old Catharines?
During warmer conditions, the Canadian Humidex indicates comfort levels. The current Humidex is 17 (Comfortable).
What is the Air Quality Health Index (AQHI) for Old Catharines?
The current AQHI for Old Catharines 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 Old Catharines 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.