Interpretation of the UV Index and its categories - UV Index Program - [Meteorological Service of Canada

Interpretation of the UV Index

The UV index is included in Environment Canada's weather forecasts whenever it is expected to reach 3 (moderate category) or more. This table outlines the sun protection actions recommended at different levels of the UV index. Remember that the amount of UV you receive depends on both the strength of the sun's rays (UV Index) and the amount of time you spend in the sun.

**What does UV Index mean?**
UV Index	Category	Sun Protection Actions (in detail)
0 - 2	Low	Minimal protection for normal activity
3 - 5	Moderate	Cover up. Wear hat, sunglasses, sunscreen if outside for 30 min.
6 - 7	High	Protection required. Reduce time in sun between 11AM and 4PM
8 - 10	Very High	Take full precautions and avoid sun between 11AM and 4PM
11+	Extreme	Take full precautions and avoid sun between 11AM and 4PM
Proper sun protection includes wearing a broad-rimmed hat, a shirt with long sleeves and wrap-around sunglasses or ones with side shields. Choose sunscreen with 15+ SPF (sun protection factor) that offers protection against both UV-A and UV-B rays. Apply generously before going outside and reapply often, especially after swimming or exercise.

Meteorological Service of Canada - Environment Canada - Government of Canada

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Important Notices and Disclaimers

Created : 2002-02-13

Modified : 2004-02-25

Reviewed : 2004-02-25

Url of this page : http://www.msc.ec.gc.ca
/topics/uv/present_summary_table_e.html

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