Lake Markham
No need to modify usual outdoor activities unless you experience symptoms such as coughing or throat irritation.
Lake Markham Live Precipitation Radar
Full Screen ViewLake Markham Live Doppler RadarMSC Dual-Pol
Lake Markham, ON • Lat: 43.81° N, Lon: 76.17° W • Sweep 10m
Lake Markham 30-Year Weather History & Monthly Averages
Explore month-by-month temperatures, annual snowfall in cm, rainy days, and historical record highs and lows.
Lake Markham 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 Markham, ON
What is the current temperature and conditions in Lake Markham?
As of today, the temperature in Lake Markham is 21.4°C with overcast. The apparent temperature (feels like) is 22.8°C with relative humidity at 78%.
How does Wind Chill and Humidex affect Lake Markham?
During warmer conditions, the Canadian Humidex indicates comfort levels. The current Humidex is 25 (Comfortable).
What is the Air Quality Health Index (AQHI) for Lake Markham?
The current AQHI for Lake Markham is 6 (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 Markham 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.