Home
Weather Dublin
WeatherRadar
RainfallRadar
TemperatureRadar
WindRadar
LightningRadar
Weather News
Editor's Pick
Discover the app
Weather widget
Contact us
Apps
    Home / Editor's Pick /

    Understanding the UV-Index

07:00
10 March 2022

As the spring sun arrives...
Understanding the UV-Index

With spring here we will soon be spending more time outdoors as conditions brighten. But with sunnier days comes increased ultraviolet (UV) radiation.

UV radiation is a type of energy produced by the sun ray's and is the main cause of skin cancer.

Even on a cloudy day, UV levels can be high with UV able to be reflected and scattered in the clouds.

uv-skin

There are three types of UV rays: UVA, UVB, and UVC. UVC is the most dangerous form of UV radiation, but luckily this is absorbed by the atmosphere before it reaches Earth.

UVB penetrates the top layer of the skin and leads to sunburn.

UVA is the most potent source which we are exposed to all year long. UVA can even pass through windows and clouds and penetrates deep into our skin leading to ageing and increases our risk of skin cancer.

Because of the dangers associated with increased levels of UV, particularly in the spring and summer months when UV radiation is at its strongest, the UV Index was created.

The higher the UV Index, the stronger the strength of the UV and faster skin will burn.

Across the UK and Ireland, UV levels tend to reach 7 on the UV Index on the hottest days. At this level there is a risk of burning within 30-60 minutes.

As we spend more time outside, be sure to check the UV Index level near you through the local forecast!

Ryan Hathaway
More on the topic
Blood Moon rises early Friday morning. Partial lunar eclipse. . . Thursday 27 August 2026
Stages of a lunar eclipse
Thursday 27 August 2026

Partial lunar eclipse

Blood Moon rises early Friday morning
Summer of 2026: hottest on record. Breaking 2025 record. . . Tuesday 1 September 2026
Aerial view of a large park with dry yellow-brown grass, intersecting footpaths, and a few people walking across the parched landscape beneath clear summer skies.
Tuesday 1 September 2026

Breaking 2025 record

Summer of 2026: hottest on record
Slow moving rain brings flooding. More alerts live. . . Thursday 27 August 2026
Weather radar at 11:00 on 27.08 showing widespread heavy rain from Liverpool through the Midlands to eastern England, with an arrow indicating rain moving north.
Thursday 27 August 2026

More alerts live

Slow moving rain brings flooding
All weather news
This might also interest you
New records for England and Wales. Broken again tomorrow?. . . Thursday 25 June 2026
Temperature map of southwest Britain on 25.06 showing extreme heat across southern Wales and southwest England, with Bute Park in Cardiff highlighted at 34.2°C and Yeovilton at 36.4°C amid widespread deep red heat zones.
Thursday 25 June 2026

Broken again tomorrow?

New records for England and Wales
Long-term trends need a pinch of salt. 40 °C in July?. . . Tuesday 30 June 2026
Temperature radar of 2022 heatwave where the all-time temperature record in the UK was set. Warning symbol overlain.
Tuesday 30 June 2026

40 °C in July?

Long-term trends need a pinch of salt
Storm Chandra makes impact. Severe gales & heavy rain. . . Tuesday 27 January 2026
Split image showing strong winds over the UK on a forecast map and widespread rain and snow on a weather radar map.
Tuesday 27 January 2026

Severe gales & heavy rain

Storm Chandra makes impact
All articles
Weather & Radar

Weather & Radar is also available on

Google Play StoreApp Store

Company

Contact us Privacy Policy Legal info Accessibility statement

Services

Uploader

Socials

facebooktwitteryouTubelinkList