Whats the UV Index today in Perth ?
The UV index is 1.5 in Perth! (as of 09:00 PM) Today's chart
No sun protection needed. You can safely stay outside using minimal sun protection.

Protective clothing
Make sure to wear protective clothing and a wide-brimmed hat
SPF-50 or higher sunscreen
Generously apply broad-spectrum SPF-50 or higher sunscreen on exposed skin
Sunglasses
Wear sunglasses - make sure they meet Australian Standards