UV index in Long Harbour-Mount Arlington Heights today
Mountain Long Harbour-Mount Arlington Heights (NL) is at 47.4°N. Altitude lifts the UV dose, and typical July peaks of 8–10 (very high) arrive on days that still feel crisp. 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 Long Harbour-Mount Arlington Heights
Peak UV, temperature and conditions for Long Harbour-Mount Arlington Heights. 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 high-country day in Long Harbour-Mount Arlington Heights can still sit at protection levels. Why you burn on cloudy days.
When Long Harbour-Mount Arlington Heights needs sun protection
Sun protection is needed in Long Harbour-Mount Arlington Heights typically from May through September, and any clear spring or fall day UV reaches 3. Altitude lets more UV through; a cool lookout is still protection weather when the index is 3 or above.
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 Long Harbour-Mount Arlington Heights need sun protection?
- Whenever the UV index is 3 or above. In Long Harbour-Mount Arlington Heights 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 Long Harbour-Mount Arlington Heights need sun protection in winter?
- Not every day. Midwinter middays in Long Harbour-Mount Arlington Heights often sit below UV 3, but clear late-winter and early-spring days cross the threshold before summer fully arrives. Check the live index.
- Can you burn on a cool day in Long Harbour-Mount Arlington Heights?
- Yes. UV is not heat. A cool, windy or lightly cloudy day in Long Harbour-Mount Arlington Heights can still sit at UV 3 or above, especially from spring through autumn. Temperature on this page is for context only; the UV number is what decides protection.