UV Index
UV Index
Today's UV index in Mississauga, Canada 
will be up to 7.3, indicating a high level of sun exposure for the average person. Check our tips for today to make sure you're safe in the sun.
Last checked: 2025-05-10
With Mississauga's UV index reaching 7.3, protect your skin from harm by staying in shade, wearing protective clothing, and applying SPF 30+ sunscreen every 2 hours, especially between 10 a.m. and 4 p.m. when UV rays are strongest.
The UV index in Mississauga varies throughout the year, reaching higher levels around 6 to 7 during summer months and dropping to low levels of 0 to 1 in winter. This means the sun's rays are strongest in summer and weakest in winter.
Mississauga experiences four clear seasons: cold winters with snow, mild springs, warm and sometimes humid summers, and cool, colorful autumns. The weather changes gradually with temperature swings and rainfall distributed mostly in spring and summer.
Compared to other parts of Canada, Mississauga has milder winters than cities further north. Its climate is similar to nearby Toronto, with somewhat warmer winters than cities like Ottawa or Montreal. Compared to the U.S. northeast, Mississauga has colder winters but similar summer warmth.
See the UV index hour by hour for Mississauga, along with the temperature and how cloudy it is. If the UV level is higher than moderate, it's best to avoid direct sunlight.