UV Index
UV Index
Today's UV index in Stouffville, Canada 
will be up to 7.2, 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: 2025-05-21
With Stouffville's UV index reaching 7.2, 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 Stouffville, Canada, varies throughout the year, peaking around 7 to 8 during summer months and dropping to 0 or 1 in winter. Spring and fall typically see moderate levels around 3 to 5.
Stouffville experiences four distinct seasons, with cold, snowy winters and warm, humid summers. Spring often brings rain, while fall is cooler with colorful foliage. Weather can change quickly, especially during transitional seasons.
Compared to nearby Toronto and southern Ontario, Stouffville has similar weather, though it may be slightly cooler and receive more snow in winter. It is milder than northern parts of Canada but colder than southern U.S. states.
See the UV index hour by hour for Stouffville, along with the temperature and how cloudy it is. If the UV level is higher than moderate, it's best to avoid direct sunlight.