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UV index

UK //juːˈviː ˈɪndɛks// US //juːˈvi ˈɪndɛks// Pronunciation

Definition

A numerical scale that indicates the level of ultraviolet radiation from the sun.

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In simple words: A number that shows how strong the sun's UV rays are.

Examples

• The UV index today is high, so take precautions.
• Make sure to check the UV index before heading outdoors.
• High UV index can lead to sunburn.
• The weather report mentions a rising UV index this weekend.

Usage notes

Commonly used in weather reports and health advisories. Appropriate for discussions about sun safety and outdoor activities.

Grammar pattern

standalone noun

Memory hint

Think of UV as ' Ultra Violent' rays, so you need to UV-index protect yourself!

Collocations

• check the UV index
• high UV index
• low UV index

Synonyms

• UV radiation level
• sun safety index
• sun exposure level

Common mistakes

• Confused with 'UV ray' vs 'UV index'.
• Using it in contexts unrelated to sun safety.
• Misunderstanding its scale, thinking lower is always safer.