Usk UV Index
Monmouthshire — Sun Safety & UV Levels
Usk UV Outlook
In Usk today, UV levels are likely to remain low. Minimal UV risk today; sun protection is generally not required.
Looking further ahead, Usk is likely to see mostly moderate UV levels over the next fortnight. If you have sensitive skin, keep an eye on the UV index when spending longer outside.
Current UV
Minimal UV risk today; sun protection generally not required.
☀️ UV Scale
| 0–2 | Low | Minimal UV risk today in Usk; sun protection generally not required. |
| 3–5 | Moderate | UV levels are moderate — consider sunscreen if spending extended time outdoors. |
| 6–7 | High | UV levels are high — sunscreen, a hat, and sunglasses recommended. |
| 8–10 | Very High | UV levels are very high — take full precautions when outdoors. |
| 11+ | Extreme | Exceptionally high UV; minimise time in direct sun during peak hours. |
Today’s Hourly UV
14-Day UV Forecast
UV Trend
Forecast context and reference links
This page focuses on practical interpretation for Usk. When the guidance becomes mixed, it is usually a regime question first, rather than a single hourly detail.
- Wales Climate for regional patterns and seasonal tendencies.
- UK Climate Overview for a national baseline and how regions compare.
- Wales for location browsing and regional navigation.
How to interpret confidence
For how forecast reliability changes with lead time, see Forecast Confidence. For transparency on how WeatherEngland sources and updates data, see Methodology.
Background guides
- UK Weather Patterns
- UK Seasonal Weather
- UK Weather Hazards
- UK Weather Safety
- UK Jet Stream
- UK Microclimates
Glossary support
Start with the Weather Glossary. Useful terms for this page include UV Index, Solar Radiation, and Cloud.
FAQ
What is the UV index in Usk today?
In Usk today, the UV index is low at roughly 0 around midday. UV levels depend on sun angle, the type and depth of cloud, and how clear the air is.
When is UV strongest in Usk?
Usk sees its strongest UV late morning into early afternoon, when the sun is highest. The seasonal peak comes in late spring and summer, when the sun is highest.
Can UV be high when it’s cloudy in Usk?
Yes. Thin, broken or bright overcast can still let through a meaningful amount of ultraviolet radiation. In summer, it’s possible to pick up exposure even without clear blue skies, especially around midday.
What does the UV index number mean for sun safety?
It’s a measure of how strong ultraviolet radiation is at the surface. Higher values mean shorter exposure times before skin starts to burn, so protection matters more when the index climbs.
Does UV in Usk change a lot day to day?
It can vary, especially in changeable weather. Daily variation is often down to cloud thickness and air clarity; the seasonal pattern changes more gradually as daylight and solar angle increase into summer.