UV index in Cataraqui River East today
River Cataraqui River East (ON) is at 44.3°N. Time on the water reflects ultraviolet back up, and July skies commonly run 8–10 (very high). This is cool-temperate Canada: summer UV still climbs into the very high band, and spring arrives before the weather feels hot.
Live reading · data by Open-Meteo · reference monitoring by ARPANSA
Today and tomorrow in Cataraqui River East
Peak UV, temperature and conditions for Cataraqui River East. Tomorrow’s peak is the number to plan around if you’re heading out in the middle of the day.
Weather conditions right now
Cloud and rain cut heat more than they cut UV. A partly cloudy day in Cataraqui River East can still sit at protection levels. Why you burn on cloudy days.
When Cataraqui River East needs sun protection
Sun protection is needed in Cataraqui River East typically from May through September, and any clear spring or fall day UV reaches 3. Time on the river reflects UV back up, so banks and boats need the same cover as a beach day.
The threshold, per SunSmart and ARPANSA: whenever UV reaches 3 or above, Slip on covering clothing, Slop on SPF 50+ sunscreen, Slap on a hat, Seek shade and Slide on sunglasses. Read the full sun safety guide.
The UV scale at a glance
- 0–2Low
- 3–5Moderate
- 6–7High
- 8–10Very high
- 11+Extreme
Frequently asked questions
- When does Cataraqui River East need sun protection?
- Whenever the UV index is 3 or above. In Cataraqui River East that is typically from May through September, and any clear spring or fall day UV reaches 3. Health authorities use the same UV Index threshold worldwide.
- Does Cataraqui River East need sun protection in winter?
- Not every day. Midwinter middays in Cataraqui River East often sit below UV 3, but clear late-winter and early-spring days cross the threshold before summer fully arrives. Check the live index.
- Does the water make UV worse in Cataraqui River East?
- It can. The river reflect ultraviolet, so skin that is not covered (including under the chin and on the tops of feet) picks up extra dose on top of the direct sun. The live UV index on this page is the sky reading; reflection is on top of that.