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Ultraviolet radiation

HomeHealth TopicsClimate changeUltraviolet radiation
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Bright sun

If you are a partner organization, employer, or educator, find more information by visiting our organizations and professional page:

Climate change FAQs for organizations and professionals.

Ultraviolet (UV) radiation is an invisible form of radiation that can come from both natural sources (e.g., the sun), and artificial sources (e.g., black lights, welding equipment, lasers and tanning equipment). The impacts of climate change on UVR are uncertain, as a changing climate could lead to an increase or decrease in the intensity of UVR.

Health impacts

Prolonged exposure to UVR is associated with:

  • Painful sunburns
  • Wrinkles
  • Age spots
  • Eye damage
  • Skin cancer

Who is at risk?

Everyone is at risk of UVR exposure and the potential negative health impacts associated. However, those at greatest risk include: infants, children, and youth, people who work outdoors or engage in outdoor activities, and people who are underhoused or experiencing homelessness.

Staying safe

KFL&A recommends checking the daily forecast for the UV Index and practicing sun and UV safety.

FAQ

Workplaces

What can I do if I am worried about ultraviolet radiation from the sun and I work outside? 

People who work outdoors are at an increased risk of the damaging effects of UVR exposure. If you or your employees may be working in direct sunlight when UV levels are high, suggested precautions include:
  • Limiting the amount of time working in the sun between 11 a.m. and 4 p.m. This is typically when UV levels are highest in the spring and summer
  • Seeking shade as frequently as possible
  • Wearing a wide (8 centimetres or more) brimmed hat
  • Attaching a back flap or visor to a hard hat or helmet
  • Wearing eyeglasses that filter UV rays
  • Applying broad spectrum sunscreen with an SPF of 30 or higher
    • Reapply often, especially if sweating heavily
    • It is also suggested to use an SPF lip balm
Resources

Working Outdoors - Government of Ontario

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