Weather in Mississauga Today
Current temperature in Mississauga: 17°C (63°F). Sunny. Today's high 22°C (72°F), low 11°C (52°F).
Today's Daylight Forecast
Moon & Islamic Calendar
Air quality and UV are both favourable great conditions for a walk, run, or outdoor activity.
5-Day Weather Forecast
Full 15-Day ForecastAtmospheric Details
Today vs Normal
The long-term average high for today is 21°C.
23 of the last 28 days with published data ran above normal.
It continues that pattern - today's forecast is also running above normal.
Red = above normal, blue = at or below · last 12 days
Air Quality
Air quality is considered satisfactory, and air pollution poses little or no risk. It’s a good day to be active outside.
Health & Activity Advice
UV index is 6 today — moderate. Sunscreen is worth using for extended time outside, but no special precautions are needed for short trips.
Air quality is considered satisfactory, and air pollution poses little or no risk. It’s a good day to be active outside.
Conditions are comfortable for outdoor activity at most points during the day today.
Nearby Regional Outlook
Mississauga Weather Radar
Live precipitation · Cloud cover · Wind
Frequently Asked Questions
What is the hottest month in Mississauga?
The hottest month in Mississauga is typically July, with daytime highs averaging around 27.9°C (82°F), based on 10 years of historical weather data. Overnight lows during this period average near 17.6°C (64°F).
What is the coldest month in Mississauga?
The coldest month in Mississauga is typically February, with overnight lows averaging around -7.8°C (18°F) and daytime highs near 1.6°C (35°F), based on 10 years of historical weather data. Freezing overnight temperatures are common during this month, so plan for icy conditions in the early morning.
Does Mississauga have a rainy season?
Mississauga doesn't have a sharply defined rainy season rainfall is fairly spread across the year based on 10 years of historical data. April is the wettest month on average (about 95 mm), while September is the driest (about 56 mm).
What's the best time of year to visit Mississauga?
The best time to visit Mississauga is typically September, when daytime highs average a comfortable 22.9°C (73°F). Rainfall during this window averages around 56 mm, one of the lighter, more comfortable stretches of the year. This is based on 10 years of historical weather data.
Is Mississauga's air quality safe right now?
As of the latest reading, Mississauga's air quality index (AQI) is 17, rated "Good", based on the nearest monitoring station. Air quality is considered satisfactory, with little to no health risk.