UV Index
UV Index
Today's UV index in Kingston, Canada 
will be up to 7.4, 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 Kingston's UV index reaching 7.4, 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.
Kingston, Canada, experiences UV index levels that vary seasonally, typically low in winter and moderate to high in summer, peaking around 6 to 7 during sunny summer days. The city has four distinct seasons with cold, snowy winters and warm, sometimes humid summers. Spring and fall bring mild temperatures and variable weather with occasional rain. Compared to other parts of Ontario and neighboring regions, Kingston's weather is a bit milder than northern areas but colder in winter and warmer in summer than more northern Canadian cities. Its location near Lake Ontario influences its weather, making it slightly more humid than inland areas.
See the UV index hour by hour for Kingston, along with the temperature and how cloudy it is. If the UV level is higher than moderate, it's best to avoid direct sunlight.