Saint John
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Saint John Live Precipitation Radar
Full Screen ViewSaint John Live Doppler RadarMSC Dual-Pol
Saint John, NB • Lat: 45.27° N, Lon: 66.06° W • Sweep 10m
Saint John 30-Year Weather History & Monthly Averages
Explore month-by-month temperatures, annual snowfall in cm, rainy days, and historical record highs and lows.
Saint John 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 Saint John, NB
What is the current temperature and conditions in Saint John?
As of today, the temperature in Saint John is 17°C with overcast. The apparent temperature (feels like) is 17.4°C with relative humidity at 88%.
How does Wind Chill and Humidex affect Saint John?
During warmer conditions, the Canadian Humidex indicates comfort levels. The current Humidex is 17 (Comfortable).
What is the Air Quality Health Index (AQHI) for Saint John?
The current AQHI for Saint John 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 Saint John 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.